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Contents
- The climate of Selfoss
- The best time to visit Selfoss
- The worst time to visit Selfoss
- Spring weather in Selfoss
- Summer weather in Selfoss
- Autumn weather in Selfoss
- Winter weather in Selfoss
- 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 daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Selfoss
The petite town of Selfoss, located in the South of Iceland, is significantly influenced by a Marine West Coast climate, designated as Cfc by the Köppen climate classification. This pertains to an environment where rainfall is a common occurrence throughout the year, and summer months maintain a cool ambiance. The monthly weather parameters are indicative of this typical climate in Selfoss.
Two key indicators, average high and low temperatures, show the level of chilliness that persists in Selfoss throughout the year. From 1.5°C (34.7°F) in December to a peak of 13.8°C (56.8°F) in July, it's clear that even in the warmest months, the overarching weather is cool. It’s important to note that temperatures rarely go beyond these bounds. The lowest observed temperatures go from -1.9°C (28.6°F) in December and gradually reach up to 8.9°C (48°F) in July forecasting an undeniable crispness.
With regards to rainfall, Selfoss witnesses precipitation pretty much all year round with January having the maximum of 142mm (5.59") and the minimum in June with 45mm (1.77"). Among snowy months, March sees the highest snowfall with 220mm (8.66"), gradually reducing till becoming negligible from June to October, with November and December again experiencing escalated snowfall.
Relative humidity oscillates between 74% in May and 82% in January and October. Daylight hours extend from 4.5 hours in December to maximum at 20.7 hours in June, also effectively demonstrating Icelandic characteristic long days in summer and short, dark winter days.
Two key indicators, average high and low temperatures, show the level of chilliness that persists in Selfoss throughout the year. From 1.5°C (34.7°F) in December to a peak of 13.8°C (56.8°F) in July, it's clear that even in the warmest months, the overarching weather is cool. It’s important to note that temperatures rarely go beyond these bounds. The lowest observed temperatures go from -1.9°C (28.6°F) in December and gradually reach up to 8.9°C (48°F) in July forecasting an undeniable crispness.
With regards to rainfall, Selfoss witnesses precipitation pretty much all year round with January having the maximum of 142mm (5.59") and the minimum in June with 45mm (1.77"). Among snowy months, March sees the highest snowfall with 220mm (8.66"), gradually reducing till becoming negligible from June to October, with November and December again experiencing escalated snowfall.
Relative humidity oscillates between 74% in May and 82% in January and October. Daylight hours extend from 4.5 hours in December to maximum at 20.7 hours in June, also effectively demonstrating Icelandic characteristic long days in summer and short, dark winter days.
The best time to visit Selfoss
A visit to Selfoss during the months of June, July and August can be deemed as the best time bearing in mind the pleasant temperatures. The temperatures lie between 12°C (53.6°F) to 13.8°C (56.8°F) during these months. Notably, the daylight reaches its maximum of 20.7 hours in June allowing visitors to fully explore the picturesque town.
Additionally, these months coincide with the lowest rain and snowfall levels of the year, making outdoor activities far less likely to be impeded by weather. This is complemented with longer sunshine hours, from 7.6 hours in May surging to 7.8 hours in August.
Additionally, these months coincide with the lowest rain and snowfall levels of the year, making outdoor activities far less likely to be impeded by weather. This is complemented with longer sunshine hours, from 7.6 hours in May surging to 7.8 hours in August.
The worst time to visit Selfoss
If visitors are discouraged by lower temperatures and lesser sunlight hours, the period from November to February may not be an optimal time for a visit. During this time, the temperatures fall to frigid levels, with lows going from -1.9°C (28.6°F) in December to highs only reaching 1.5°C (34.7°F). In addition, the daylight hours plunge to as low as 4.5 in December.
Rainfall and snowfall also display a surge during these months. Particularly November and December register an increase in snowfall with 48mm (1.89") and 164mm (6.46") respectively.
Rainfall and snowfall also display a surge during these months. Particularly November and December register an increase in snowfall with 48mm (1.89") and 164mm (6.46") respectively.
Spring weather in Selfoss
Spring, from March to May, in Selfoss brings prolonged sunlight hours and temperatures that move from 2.7°C (36.9°F) to 8.5°C (47.3°F). While the sunsine hours ramp up to 18.4 by May, nights continue to be chilly with temperatures hovering between -0.8°C (30.6°F) in March to 4.3°C (39.7°F) in May. Rainfall reduces over these months, but with an increase in snowfall during the March, travellers should be ready for occasional wintery curves.
Summer weather in Selfoss
Summer months are comparatively temperate with temperatures varying from 13.8°C (56.8°F) in July to 10°C (50°F) in September. Low temperatures at night vary from 8.9°C (48°F) in July to 6.1°C (43°F) in September. These months are also associated with less rainfall, compared to the rest of the year, and zero snowfall, making outdoor activities more feasible.
Autumn weather in Selfoss
Moving into the autumn months of October and November, lower temperatures reappear with highs of 6.5°C (43.7°F) and 3.3°C (37.9°F) respectively. Rainfall increases gradually along with the re-occurrence of snowfall in November making the weather in these months cooler and wetter.
Winter weather in Selfoss
Winter descends on Selfoss with average high temperatures between 2.2°C (36°F) to 1.5°C (34.7°F) for December to February. Lowest temperature recorded is -1.9°C (28.6°F) in December. Snowfall is at its peak in these months, especially notable in December and January with 164mm (6.46") and 143mm (5.63") respectively. Rainfall is also high, indicative of a true Icelandic winter. It is advisable for visitors during this time to be well prepared for a full-fledged Nordic winter experience.
Weather in January
In January, Selfoss experiences temperatures most severe in the annual cycle with a high of 2.2°C (36°F) and a chilly low of -1.2°C (29.8°F). The earliest month of the year tends to be quite humid with cloudy skies and frequent occurrences of rain. Weather in January »
Weather in February
February sees a continuation of the cold weather witnessed in January. Despite this, some slight changes can be observed in the rainfall in Selfoss which decreases to 112mm (4.41") from 142mm (5.59") in January. The snowfall also reduces, but it's still significant, warranting a need for warm attire. Weather in February »
Weather in March
March brings a slight improvement in temperatures in Selfoss compared to the freezing cold January and February, with the highest temperature increasing to 2.7°C (36.9°F). Noteworthy is the increase in snowfall to 220mm (8.66") making it the month with the highest snowfall in the year. Weather in March »
Weather in April
In April, the signs of spring become more apparent in Selfoss. The remarkable decrease in snowfall to 47mm (1.85") from March’s 220mm (8.66") signifies the end of intense winter conditions. The temperature begins to climb, but layering is still recommended as the weather generally stays comfortable but slightly cold. Weather in April »
Weather in May
May is the onset of relatively warmer temperatures in Selfoss. This is the time when the last traces of snow completely vanish, making it the first month of the year without any snowfall. The town starts to take on a more vibrant atmosphere with the lush greenery emerging after the snow melt. Weather in May »
Weather in June
June is a comfortable month in Selfoss with a notable rise in temperatures, reaching up to 12°C (53.6°F). This is also the month with the least rainfall, with total levels dropping down to 45mm (1.77"). The pleasant and primarily dry weather makes it suitable for a variety of outdoor activities, enhancing the overall experience of visitors. Weather in June »
Weather in July
July holds the title of being the warmest month of the year in Selfoss, with the highest average temperature reaching a comfortable 13.8°C (56.8°F). Despite not being the driest, the amount of rainfall is reasonable and does not have a significant impact on outdoor activities. Weather in July »
Weather in August
August sees a slight decline in temperatures in Selfoss from July, but the weather remains fairly warm. While daylight hours slightly decrease, they still make up for a substantial part of the day offering ample time for exploration. Weather in August »
Weather in September
September marks the onset of autumn in Selfoss with temperatures starting to decrease and moving closer to 10°C (50°F). Rainfall increases from August's 77mm (3.03") to 95mm (3.74"), indicating the transition towards the rainy season. Weather in September »
Weather in October
October brings noticeable changes in Selfoss’s weather with temperatures continuing a downward trend. As the city inches closer to the end of autumn, rainfall continues to be significant, laying the groundwork for the upcoming winter season. Weather in October »
Weather in November
November marks the beginning of winter in Selfoss with temperatures dipping down to 3.3°C (37.9°F) at the highest. This is the month when snowfall returns to Selfoss, rising to 48mm (1.89") from zero in the preceding months. Weather in November »
Weather in December
In December, Selfoss witnesses the peak of its winter season with the coldest temperatures in the year. Notably, snowfall climbs up to 164mm (6.46") making it the second-highest snowfall month after March. With the longest nights of the year and limited daylight hours, it is a great time to experience the Nordic winter wonderland. Weather in December »
[Resources]Frequently asked questions
What is the most humid month in Selfoss?
The months with the highest humidity in Selfoss are January and September, with an average relative humidity of 82%.
What is the wettest month in Selfoss?
The month with the most rainfall is January, when the rain falls for 18.6 days and typically aggregates up to 142mm (5.59") of precipitation.
How many days does it rain in Selfoss?
Throughout the year, in Selfoss, there are 208.7 rainfall days, and 1105mm (43.5") of precipitation is accumulated.
When does it snow in Selfoss?
Months with snowfall are January through May, October through December.
How many days does it snow in Selfoss?
Throughout the year, there are 61.9 snowfall days, and 825mm (32.48") of snow is accumulated.
What is the month with the least sunshine in Selfoss?
With an average of 2.4h of sunshine, January has the least sunshine of the year in Selfoss, Iceland.
When does it snow the most in Selfoss?
The month with the most snowfall is March, when snow falls for 13.3 days and typically aggregates up to 220mm (8.66") of snow.
What is the least humid month in Selfoss?
With an average relative humidity of 74%, May is the least humid month.
What is the driest month in Selfoss?
The month with the least rainfall in Selfoss, Iceland, is June, when the rain falls for 15.7 days and typically collects 45mm (1.77") of precipitation.
When it does not snow in Selfoss?
June through September are months without snowfall in Selfoss, Iceland.
When are the longest days in Selfoss?
June has the longest days of the year, with an average of 20h and 42min of daylight.
What is the hottest time of year in Selfoss?
The warmest time of the year is July, with temperatures averaging a high of 13.8°C (56.8°F) and a low of 8.9°C (48°F).
What is the month with the highest UV index in Selfoss?
The month with the highest UV index in Selfoss, Iceland, is July, with an average maximum UV index of 4.
What month has the most sunshine in Selfoss?
The month with the most sunshine is August, with an average of 7.8h of sunshine.
When is the lowest UV index in Selfoss?
November is the month with the lowest UV index in Selfoss, Iceland, with an average maximum UV index of 1.
What are the coldest months in Selfoss?
The coldest month in Selfoss is December, with an average high-temperature of 1.5°C (34.7°F) and an average low-temperature of -1.9°C (28.6°F).
What is the month with the shortest days in Selfoss?
December has the shortest days of the year, with an average of 4h and 30min of daylight.
Is there Daylight Saving Time (DST) in Selfoss?
Selfoss, Iceland, does not utilize Daylight Saving Time (DST). GMT timezone is used throughout the entire year.
Average temperature
Selfoss, Iceland
The warmest month (with the highest average high temperature) is July (13.8°C).
The month with the lowest average high temperature is December (1.5°C).
The month with the highest average low temperature is July (8.9°C).
The coldest month (with the lowest average low temperature) is December (-1.9°C).
Average pressure
Selfoss, Iceland
- Average pressure in January:
996.8mbar - Average pressure in February:
998mbar - Average pressure in March:
1003.7mbar - Average pressure in April:
1009mbar - Average pressure in May:
1012.1mbar - Average pressure in June:
1013.8mbar
- Average pressure in July:
1009.4mbar - Average pressure in August:
1007.6mbar - Average pressure in September:
1003mbar - Average pressure in October:
1003.6mbar - Average pressure in November:
1001.4mbar - Average pressure in December:
998.3mbar
The month with the highest atmospheric pressure is June (1013.8mbar).
The month with the lowest atmospheric pressure is January (996.8mbar).
Average wind speed
Selfoss, Iceland
- Average wind speed in January:
24.1km/h - Average wind speed in February:
24.8km/h - Average wind speed in March:
23.5km/h - Average wind speed in April:
22.5km/h - Average wind speed in May:
19.5km/h - Average wind speed in June:
14.9km/h
- Average wind speed in July:
14.7km/h - Average wind speed in August:
15.9km/h - Average wind speed in September:
19.8km/h - Average wind speed in October:
21.4km/h - Average wind speed in November:
22.1km/h - Average wind speed in December:
23.6km/h
The windiest month (with the highest average wind speed) is February (24.8km/h).
The calmest month (with the lowest average wind speed) is July (14.7km/h).
Average humidity
Selfoss, Iceland
The months with the highest relative humidity are January and September (82%).
The month with the lowest relative humidity is May (74%).
Average rainfall
Selfoss, Iceland
- Average rainfall in January:
142mm - Average rainfall in February:
112mm - Average rainfall in March:
117mm - Average rainfall in April:
100mm - Average rainfall in May:
63mm - Average rainfall in June:
45mm
The wettest month (with the highest rainfall) is January (142mm).
The driest month (with the least rainfall) is June (45mm).
Average rainfall days
Selfoss, Iceland
- Average rainfall days in January:
18.6 days - Average rainfall days in February:
14.7 days - Average rainfall days in March:
17.3 days - Average rainfall days in April:
19.9 days - Average rainfall days in May:
17.4 days - Average rainfall days in June:
15.7 days
- Average rainfall days in July:
19.7 days - Average rainfall days in August:
17.1 days - Average rainfall days in September:
18.7 days - Average rainfall days in October:
17.5 days - Average rainfall days in November:
17.8 days - Average rainfall days in December:
14.3 days
The month with the highest number of rainy days is April (19.9 days).
The month with the least rainy days is December (14.3 days).
Average snowfall
Selfoss, Iceland
- Average snowfall in January:
190mm - Average snowfall in February:
143mm - Average snowfall in March:
220mm - Average snowfall in April:
47mm - Average snowfall in May:
10mm - Average snowfall in June:
0mm
The month with the highest snowfall is March (220mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Selfoss, Iceland
- Average snowfall days in January:
11.9 days - Average snowfall days in February:
11.4 days - Average snowfall days in March:
13.3 days - Average snowfall days in April:
5.1 days - Average snowfall days in May:
1.3 days - Average snowfall days in June:
0.1 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1 days - Average snowfall days in November:
5.5 days - Average snowfall days in December:
12.3 days
The month with the highest number of snowfall days is March (13.3 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight / Average sunshine
Selfoss, Iceland
- Average daylight in January:
5h and 4min - Average daylight in February:
8h and 4min - Average daylight in March:
11h and 5min - Average daylight in April:
15h and 1min - Average daylight in May:
18h and 2min - Average daylight in June:
20h and 4min
- Average daylight in July:
19h and 3min - Average daylight in August:
16h and 2min - Average daylight in September:
13h and 0min - Average daylight in October:
9h and 5min - Average daylight in November:
6h and 4min - Average daylight in December:
4h and 3min
The month with the longest days is June (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 4h and 30min).
- Average sunshine in January:
2h and 2min - Average sunshine in February:
3h and 2min - Average sunshine in March:
4h and 2min - Average sunshine in April:
5h and 2min - Average sunshine in May:
7h and 4min - Average sunshine in June:
7h and 4min
- Average sunshine in July:
7h and 2min - Average sunshine in August:
7h and 5min - Average sunshine in September:
4h and 4min - Average sunshine in October:
4h and 2min - Average sunshine in November:
2h and 5min - Average sunshine in December:
2h and 5min
The month with the most sunshine is August (Average sunshine: 7h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days
Selfoss, Iceland
- Average sunshine days in January:
5.5 days - Average sunshine days in February:
5.6 days - Average sunshine days in March:
5.8 days - Average sunshine days in April:
6.9 days - Average sunshine days in May:
11 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
8.7 days - Average sunshine days in August:
11.6 days - Average sunshine days in September:
9.7 days - Average sunshine days in October:
11.5 days - Average sunshine days in November:
9.4 days - Average sunshine days in December:
8.5 days
The month with the most sunshine days is June (12.3 days).
The month with the least sunshine days is January (5.5 days).
Average UV index
Selfoss, Iceland
The month with the highest UV index is July (UV index 4).
The month with the lowest UV index is November (UV index 1).
Average cloud cover
Selfoss, Iceland
The month with the most cloud cover is March (Cloud cover 67).
The months with the least cloud cover are May and August (Cloud cover 59).
Average visibility
Selfoss, Iceland
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (8km).
Selfoss, Iceland
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