January weather forecast
Tromsø, Norway

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The bridge connecting the city of Tromsø, Norway
The bridge connecting the city of Tromsø, Norway

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. The limited sunlight and prevailing winter conditions contribute to frosted landscapes, with the notion of daylight becoming a rare luxury. January's weather encourages activities such as cross-country skiing, snowmobiling, or chasing breathtaking Northern Lights.

Temperature

January is the month that records the lowest temperatures, with averages ranging from a high of -4.5°C (23.9°F) to a low of -8.3°C (17.1°F).

Humidity

In Tromsø, Norway, the average relative humidity in January is 84%.

Rainfall

In Tromsø, during January, the rain falls for 5.4 days and regularly aggregates up to 82mm (3.23") of precipitation. Throughout the year, in Tromsø, there are 148.1 rainfall days, and 987mm (38.86") of precipitation is accumulated.

Snowfall

Months with snowfall in Tromsø are January through June, September through December. In January, in Tromsø, it is snowing for 15.5 days. Throughout January, 381mm (15") of snow is accumulated. In Tromsø, during the entire year, snow falls for 120.1 days and aggregates up to 2826mm (111.26") of snow.

Sea temperature

In January, the average sea temperature is 5.2°C (41.4°F).
Note: Staying in 5.2°C (41.4°F) waters for just a few moments at 13°C (55.4°F) can be harrowing, and below 10°C (50°F) poses breathing and cold shock risks, depending on individual tolerance.

Daylight

In January, the average length of the day is 1h and 47min.
On the first day of January in Tromsø, Norway, sunrise is at 01:00 and sunset at 01:00. On the last day of the month, sunrise is at 09:31 and sunset at 14:23 CET.

Sunshine

In January, the average sunshine is 1h.

UV index

The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 1 in January translates into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
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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 cold is it in Tromsø in January?

The average high-temperature, in January, in Tromsø, is -4.5°C (23.9°F), while the average low-temperature is -8.3°C (17.1°F).

What is the average humidity in January in Tromsø?

In Tromsø, the average relative humidity in January is 84%.

How much does it rain in Tromsø in January?

In January, the rain falls for 5.4 days. Throughout January, 82mm (3.23") of precipitation is accumulated.

How many days does it snow in January in Tromsø?

In January, in Tromsø, it is snowing for 15.5 days. Throughout January, 381mm (15") of snow is accumulated.

How cold is the water in January in Tromsø?

In Tromsø, Norway, in January, the average water temperature is 5.2°C (41.4°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the average length of the day in January in Tromsø?

In Tromsø, Norway, the average day length in January is 1h and 47min.

When are sunrise and sunset in January in Tromsø?

On the first day of January in Tromsø, sunrise is at 01:00 and sunset at 01:00. On the last day of the month, sunrise is at 09:31 and sunset at 14:23 CET.

How long on average sun shines in January in Tromsø?

The average sunshine duration in January is 1h.

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.

What is the UV index intensity in January in Tromsø?

In Tromsø, Norway, the average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
-2.5°C 27.5°F
-4.5°C 23.9°F
-4.3°C 24.3°F
Average low temperature
-6°C 21.2°F
-8.3°C 17.1°F
-9.1°C 15.6°F
Average pressure
1000.7mbar 29.55inHg
1004.9mbar 29.67inHg
1004.8mbar 29.67inHg
Average wind speed
16.1km/h 10mph
16.9km/h 10.5mph
16.2km/h 10.1mph
Average max. wind speed
17km/h 10.6mph
18.3km/h 11.4mph
17.6km/h 10.9mph
Average wind speed gusts
28.7km/h 17.8mph
30.4km/h 18.9mph
29.4km/h 18.3mph
Average humidity
84%
84%
85%
Average rainfall
89mm 3.5"
82mm 3.23"
81mm 3.19"
Average rainfall days
7.3
5.4
4.7
Average snowfall
379mm 14.92"
381mm 15"
390mm 15.35"
Average snowfall days
17.8
15.5
16.1
Average sea temperature
6.4°C 43.5°F
5.2°C 41.4°F
4.6°C 40.3°F
Average daylight
0h 0min
1h 5min
7h 2min
Average sunshine
0h 2min
1h 0min
2h 5min
Average sunshine days
10.6
13.2
10.3
Average UV index
1
1
1
Average cloud cover
65%
60%
63%
Average visibility
8km 5mi
8km 5mi
8km 5mi

Average temperature in January
Tromsø, Norway

Average temperature in January - Tromsø, Norway
  • Average high temperature in January: -4.5°C

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).

  • Average low temperature in January: -8.3°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).

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Average pressure in January
Tromsø, Norway

Average pressure in January - Tromsø, Norway
  • Average pressure in January: 1004.9mbar

The month with the highest atmospheric pressure is May (1013.8mbar).
The month with the lowest atmospheric pressure is December (1000.7mbar).

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Average wind speed in January
Tromsø, Norway

Average wind speed in January - Tromsø, Norway
  • Average wind speed in January: 16.9km/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).

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Average humidity in January
Tromsø, Norway

Average humidity in January - Tromsø, Norway
  • Average humidity in January: 84%

The month with the highest relative humidity is April (89%).
The month with the lowest relative humidity is July (79%).

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Average rainfall in January
Tromsø, Norway

Average rainfall in January - Tromsø, Norway
  • Average rainfall in January: 82mm

The wettest month (with the highest rainfall) is March (103mm).
The driest month (with the least rainfall) is July (55mm).

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Average rainfall days in January
Tromsø, Norway

Average rainfall days in January - Tromsø, Norway
  • Average rainfall days in January: 5.4 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).

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Average snowfall in January
Tromsø, Norway

Average snowfall in January - Tromsø, Norway
  • Average snowfall in January: 381mm

The month with the highest snowfall is March (569mm).
The months with the least snowfall are July and August (0mm).

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Average snowfall days in January
Tromsø, Norway

Average snowfall days in January - Tromsø, Norway
  • Average snowfall days in January: 15.5 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).

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Average sea temperature in January
Tromsø, Norway

Average sea temperature in January - Tromsø, Norway
  • Average sea temperature in January: 5.2°C

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).

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Average daylight in January /
Average sunshine in January
Tromsø, Norway

Average daylight in January / Average sunshine in January - Tromsø, Norway
  • Average daylight in January: 1h and 5min

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

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).

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Average sunshine days in January
Tromsø, Norway

Average sunshine days in January - Tromsø, Norway
  • Average sunshine days in January: 13.2 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).

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Average UV index in January
Tromsø, Norway

Average UV index in January - Tromsø, Norway
  • Average UV index in January: 1

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).

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Average cloud cover in January
Tromsø, Norway

Average cloud cover in January - Tromsø, Norway
  • Average cloud cover in January: 60

The month with the most cloud cover is March (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 58).

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Average visibility in January
Tromsø, Norway

Average visibility in January - Tromsø, Norway
  • Average visibility in January: 8km

The months with the highest visibility are June, July, August, September, October and November (9km).
The month with the lowest visibility is April (7km).

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Tromsø, Norway

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