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Contents
- The climate of Tromsø
- The best time to visit Tromsø
- The worst time to visit Tromsø
- Spring weather in Tromsø
- Summer weather in Tromsø
- Autumn weather in Tromsø
- Winter weather in Tromsø
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The bridge connecting the city of Tromsø, Norway
The climate of Tromsø
Tromsø, a city in the far north of Norway, lies within the Dfc (Subarctic, severe winter, no dry season, cool summer) category of the Köppen climate classification. This part of the country endures harsh winters and mild summers with relatively high humidity throughout the year.
Analyzing the climatological data, Tromsø experiences a considerable seasonal fluctuation in weather patterns. From March to October, the temperature rises from -2.2°C (28°F) to 13.9°C (57°F) and then falls back down to -4.5°C (23.9°F) by February. The lowest recorded temperature is -9.1°C (15.6°F) in February, while the highest is 13.9°C (57°F) in July. Parallel to the temperature, humidity levels fluctuate noticeably, with the highest recorded at 89% in April and the lowest at 79% in July.
Discerning precipitation data, Tromsø experiences a significant amount of rainfall ranging from 55mm (2.17") per month in July to 103mm (4.06") per month in March. Moreover, snowfall is prominent in Tromsø, peaking at 569mm (22.4") in March and being absent only from June to August. This Scandinavian city also experiences minimal sunlight, with daylight hours ranging from 1.8 hours in January to 24 hours in June, and sunshine hours scale between 0.4 hours in December to 4.8 hours in April.
Analyzing the climatological data, Tromsø experiences a considerable seasonal fluctuation in weather patterns. From March to October, the temperature rises from -2.2°C (28°F) to 13.9°C (57°F) and then falls back down to -4.5°C (23.9°F) by February. The lowest recorded temperature is -9.1°C (15.6°F) in February, while the highest is 13.9°C (57°F) in July. Parallel to the temperature, humidity levels fluctuate noticeably, with the highest recorded at 89% in April and the lowest at 79% in July.
Discerning precipitation data, Tromsø experiences a significant amount of rainfall ranging from 55mm (2.17") per month in July to 103mm (4.06") per month in March. Moreover, snowfall is prominent in Tromsø, peaking at 569mm (22.4") in March and being absent only from June to August. This Scandinavian city also experiences minimal sunlight, with daylight hours ranging from 1.8 hours in January to 24 hours in June, and sunshine hours scale between 0.4 hours in December to 4.8 hours in April.
The best time to visit Tromsø
For visitors seeking mild temperatures and extended daylight hours, June to August are the best months to visit Tromsø. During this period, temperatures generally range from 9.3°C (48.7°F) to 13.9°C (57°F) with the highest sea temperature at 11.3°C (52.3°F). Furthermore, sunshine is at its peak with an average of between 0.5 and 2.7 hours per day, making these months ideal for outdoor activities or observing the midnight sun phenomenon.
The worst time to visit Tromsø
With temperatures dropping to as low as -9.1°C (15.6°F) and limited daylight hours, the winter months, particularly December to February, could be considered the least favorable time to visit Tromsø. Apart from the harsh cold, these months also record a substantial amount of snowfall, with an average ranging from 381mm (15") to 390mm (15.35"). Additionally, sunshine is scarce during these months, with only 0.4 to 1 hour per day.
Spring weather in Tromsø
The season of spring, constituted by March to May in Tromsø, features increasing temperatures and daylight hours. The temperatures during this season transition from -2.2°C (28°F) in March to 5°C (41°F) in May, while daylight hours extend from 11.7 hours to 22.1 hours. However, precipitation is fairly high, with rainfall increasing from 103mm (4.06") to 88mm (3.46"), and snowfall decreasing from 569mm (22.4") to 182mm (7.17"). Despite the weather's inconsistency, the fresh spring air and blossoming landscapes are a delight.
Summer weather in Tromsø
Summers in Tromsø, from June to August, present the warmest temperatures, longest daylight hours, and the lowest amount of snowfall. Temperatures in this season differ between 13.9°C (57°F) to 13.1°C (55.6°F), while daylight lasts for nearly 24 hours. Precipitation in the form of rainfall does, however, register an average of up to 79mm (3.11"). Despite the modest amount of rain, summer is considered a comfortable season for visiting Tromsø.
Autumn weather in Tromsø
Tromsø in autumn, from September to November, exhibits decreasing temperatures and daylight hours. The average temperature descends from 9.7°C (49.5°F) in September to -0.1°C (31.8°F) by November, while daylight contracts from 13.3 hours to 3.7 hours. Rainfall in these months fluctuates between 80mm (3.15") and 85mm (3.35"), while snowfall increments from 16mm (0.63") in September to 308mm (12.13") in November. Autumn reflects the transitory nature of Tromsø's weather, gradually transitioning from sun-filled days to winter's cold embrace.
Winter weather in Tromsø
Winter in Tromsø spans from December to February and is characterized by severe cold, snowfall, and limited daylight. Average temperatures stay below freezing, ranging from -4.5°C (23.9°F) to -2.5°C (27.5°F). Significant snowfall is a defining feature, with averages between 381mm (15") in December to 390mm (15.35") in February. December only experiences 1.8 sunshine hours per day, a number that drops to zero in January. Despite the harsh conditions, winter offers the spectacle of the Northern Lights, an unforgettable sight for every visitor.
Weather in January
The beginning of the year in Tromsø, Norway, is marked with one of the coldest and snowiest months. Subzero temperatures and regular snowfall make this northern city a snowy winter wonderland. Precipitation in the form of snow reaches 381mm (15"), significantly higher than most other months of the year. Weather in January »
Weather in February
Weather conditions in Tromso in February resemble those from January, with winter still having a firm grasp on the city. Temperatures still surround the subzero realm, snow regularly adorns the streets and rooftops, and daylight hours remain a precious commodity. Weather in February »
Weather in March
As Tromsø transitions from winter into early spring, March indicates slight alleviation in the persisting frigid conditions. Snowfall persistently ensues, albeit less as compared to its peak in February. Dishing out a substantial total of 569mm (22.4"), snow makes March rank as the snowiest month. Weather in March »
Weather in April
April indicates a clear transition period from winter to spring in Tromsø. The weather starts to ease up, bidding farewell to the intensive snowfall and gradually escalating in temperatures. Snowfall lessens considerably, dropping to 370mm (14.57"), indicating a recession in the winter season. Weather in April »
Weather in May
May marks the definitive end of the long-lasting winter and welcomes the joy of spring in Tromsø. Snow practically retreats while temperature rates steadily improve. The amount of snowfall plummets to a far lesser 182mm (7.17") as compared to the preceding month, signifying the arrival of true spring. Weather in May »
Weather in June
June ushers in the summer season in Tromsø with temperatures mildly escalating, making it comparably warm to the rest of the year. The month is characterized by brightly lit days owing to the infamous midnight sun. Snowfall is almost entirely discontinued, with recorded levels dropping drastically to only 18mm (0.71"). Weather in June »
Weather in July
The peak of Tromso's modest summer is in July, complete with forty-eight seven sunlight and relatively warm temperatures. The absence of snowfall becomes more apparent as no measurable quantities are reported during this month, implying that summer is in full swing. Weather in July »
Weather in August
August continues the summer streak in Tromsø; however, there is a gradual shift indicating the approaching end of the warm season. The weather remains comfortably warm, with no snowfall reported, just like in July. The sunlight per day reduces perceptibly, though the days are still long and sunny. Weather in August »
Weather in September
In September, Tromsø slowly starts oscillating towards cooler temperatures as autumn begins to creep. There is a noticeable difference in weather conditions compared to August, with night starting to gather darkness once more. Weather in September »
Weather in October
October marks the descent into colder weather in Tromsø, consistently leading to the first major snowfall after summer's farewell. There is a palpable shift in weather patterns, with increasing precipitation and plummeting temperatures. Weather in October »
Weather in November
Weather in November brings Tromsø closer to significant winter conditions. It is the precursor month to the deep winter, with temperatures dipping further and snowfall increasing consistently. Snowfall registers a sharp rise, leaping up to 308mm (12.13") in total, signifying the critical transition into the heart of winter. Weather in November »
Weather in December
December witnesses Tromsø at its coldest, mirroring the depths of the experienced perennial winter. It is characterized by morosely low temperatures, a high rate of snowfall, and the profound darkness of the Polar Nights. A stark increase in snowfall is observed from 308mm (12.13") in November to 379mm (14.92") in December, affirmatively affirming the arrival of winter. Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Tromsø?
January is the month when Tromsø experiences its coldest temperatures, averaging a high of -4.5°C (23.9°F) and a low of -8.3°C (17.1°F).
How many days does it rain in Tromsø?
Throughout the year, in Tromsø, Norway, there are 148.1 rainfall days, and 987mm (38.86") of precipitation is accumulated.
When does it snow in Tromsø?
January through June, September through December are months with snowfall in Tromsø, Norway.
How much does it snow in Tromsø?
In Tromsø, Norway, during the entire year, snow falls for 120.1 days and aggregates up to 2826mm (111.26") of snow.
What is the month with the lowest UV index in Tromsø?
January through April, October through December, with an average maximum UV index of 1, are months with the lowest UV index in Tromsø, Norway.
What is the rainiest month in Tromsø?
March is the month with the most rainfall in Tromsø. Rain falls for 7.2 days and accumulates 103mm (4.06") of precipitation.
When does it snow the most in Tromsø?
March is the month with the most snowfall in Tromsø. Snow falls for 22.9 days and accumulates 569mm (22.4") of snow.
When is the sea coldest in Tromsø?
The month with the coldest seawater in Tromsø, Norway, is March, with an average sea temperature of 4.2°C (39.6°F).
What is the most humid month in Tromsø?
With an average relative humidity of 89%, April is the most humid month in Tromsø.
What is the month with the shortest days in Tromsø?
The months with the shortest days are June and December, with an average of 0h and 0min of daylight.
What is the hottest time of year in Tromsø?
The warmest period in Tromsø, Norway, is July, when temperatures fluctuate between an average high of 13.9°C (57°F) and a low of 8.7°C (47.7°F).
What is the least humid month in Tromsø?
July is the least humid month in Tromsø, with an average relative humidity of 79%.
What is the driest month in Tromsø?
July is the month with the least rainfall in Tromsø, Norway. Rain falls for 18.3 days and accumulates 55mm (2.17") of precipitation.
When it does not snow in Tromsø?
July and August are months without snowfall in Tromsø, Norway.
What is the month with the highest UV index in Tromsø?
With an average maximum UV index of 4, July is the month with the highest UV index.
What is the month with the warmest sea water in Tromsø?
The month with the warmest seawater is August, with an average sea temperature of 11.3°C (52.3°F).
When are the longest days in Tromsø?
The month with the longest days in Tromsø, Norway, is August, with an average of 18h and 0min of daylight.
What month has the most sunshine in Tromsø?
With an average of 8h of sunshine, August has the most sunshine of the year.
When is Daylight Saving Time (DST) in Tromsø?
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Tromsø, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
What is the month with the least sunshine in Tromsø?
With an average of 0.4h of sunshine, December has the least sunshine of the year in Tromsø.
Average temperature
Tromsø, Norway
The warmest month (with the highest average high temperature) is July (13.9°C).
The month with the lowest average high temperature is January (-4.5°C).
The month with the highest average low temperature is July (8.7°C).
The coldest month (with the lowest average low temperature) is February (-9.1°C).
Average pressure
Tromsø, Norway
- Average pressure in January:
1004.9mbar - Average pressure in February:
1004.8mbar - Average pressure in March:
1004.3mbar - Average pressure in April:
1010.2mbar - Average pressure in May:
1013.8mbar - Average pressure in June:
1012.5mbar
- Average pressure in July:
1011.5mbar - Average pressure in August:
1010.7mbar - Average pressure in September:
1008.9mbar - Average pressure in October:
1008.7mbar - Average pressure in November:
1005.3mbar - Average pressure in December:
1000.7mbar
The month with the highest atmospheric pressure is May (1013.8mbar).
The month with the lowest atmospheric pressure is December (1000.7mbar).
Average wind speed
Tromsø, Norway
- Average wind speed in January:
16.9km/h - Average wind speed in February:
16.2km/h - Average wind speed in March:
17km/h - Average wind speed in April:
13.9km/h - Average wind speed in May:
12.8km/h - Average wind speed in June:
11.6km/h
- Average wind speed in July:
9.5km/h - Average wind speed in August:
10.3km/h - Average wind speed in September:
11.9km/h - Average wind speed in October:
13.3km/h - Average wind speed in November:
15.9km/h - Average wind speed in December:
16.1km/h
The windiest month (with the highest average wind speed) is March (17km/h).
The calmest month (with the lowest average wind speed) is July (9.5km/h).
Average humidity
Tromsø, Norway
The month with the highest relative humidity is April (89%).
The month with the lowest relative humidity is July (79%).
Average rainfall
Tromsø, Norway
The wettest month (with the highest rainfall) is March (103mm).
The driest month (with the least rainfall) is July (55mm).
Average rainfall days
Tromsø, Norway
- Average rainfall days in January:
5.4 days - Average rainfall days in February:
4.7 days - Average rainfall days in March:
7.2 days - Average rainfall days in April:
10.2 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
19.3 days
- Average rainfall days in July:
18.3 days - Average rainfall days in August:
18.5 days - Average rainfall days in September:
17.6 days - Average rainfall days in October:
14.6 days - Average rainfall days in November:
10.7 days - Average rainfall days in December:
7.3 days
The month with the highest number of rainy days is June (19.3 days).
The month with the least rainy days is February (4.7 days).
Average snowfall
Tromsø, Norway
- Average snowfall in January:
381mm - Average snowfall in February:
390mm - Average snowfall in March:
569mm - Average snowfall in April:
370mm - Average snowfall in May:
182mm - Average snowfall in June:
18mm
The month with the highest snowfall is March (569mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days
Tromsø, Norway
- Average snowfall days in January:
15.5 days - Average snowfall days in February:
16.1 days - Average snowfall days in March:
22.9 days - Average snowfall days in April:
16.4 days - Average snowfall days in May:
7.9 days - Average snowfall days in June:
1.4 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
1 days - Average snowfall days in October:
8.9 days - Average snowfall days in November:
12.2 days - Average snowfall days in December:
17.8 days
The month with the highest number of snowfall days is March (22.9 days).
The months with the least snowfall days are July and August (0 days).
Average sea temperature
Tromsø, Norway
The best month for swimming (with the highest average sea temperature) is August (11.3°C).
The coldest month (with the lowest average sea temperature) is March (4.2°C).
Average daylight / Average sunshine
Tromsø, Norway
- Average daylight in January:
1h and 5min - Average daylight in February:
7h and 2min - Average daylight in March:
11h and 4min - Average daylight in April:
16h and 1min - Average daylight in May:
11h and 2min - Average daylight in June:
0h and 0min
- Average daylight in July:
4h and 2min - Average daylight in August:
18h and 0min - Average daylight in September:
13h and 2min - Average daylight in October:
9h and 0min - Average daylight in November:
3h and 4min - Average daylight in December:
0h and 0min
The month with the longest days is August (Average daylight: 18h and 0min).
The months with the shortest days are June and December (Average daylight: 0h and 0min).
- Average sunshine in January:
1h and 0min - Average sunshine in February:
2h and 5min - Average sunshine in March:
3h and 1min - Average sunshine in April:
4h and 5min - Average sunshine in May:
4h and 1min - Average sunshine in June:
0h and 3min
- Average sunshine in July:
2h and 4min - Average sunshine in August:
8h and 0min - Average sunshine in September:
5h and 4min - Average sunshine in October:
3h and 2min - Average sunshine in November:
1h and 5min - Average sunshine in December:
0h and 2min
The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is December (Average sunshine: 0h and 24min).
Average sunshine days
Tromsø, Norway
- Average sunshine days in January:
13.2 days - Average sunshine days in February:
10.3 days - Average sunshine days in March:
6.2 days - Average sunshine days in April:
8 days - Average sunshine days in May:
9.9 days - Average sunshine days in June:
8.1 days
- Average sunshine days in July:
10.2 days - Average sunshine days in August:
10.8 days - Average sunshine days in September:
10.6 days - Average sunshine days in October:
9.8 days - Average sunshine days in November:
10.3 days - Average sunshine days in December:
10.6 days
The month with the most sunshine days is January (13.2 days).
The month with the least sunshine days is March (6.2 days).
Average UV index
Tromsø, Norway
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover
Tromsø, Norway
The month with the most cloud cover is March (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 58).
Average visibility
Tromsø, Norway
The months with the highest visibility are June, July, August, September, October and November (9km).
The month with the lowest visibility is April (7km).
Tromsø, Norway
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