Climate and monthly weather forecastStykkishólmur, Iceland
Climate and monthly weather forecast
The climate of Stykkishólmur
Located in the icy realm of Iceland, Stykkishólmur experiences a Tundra climate - defined by the Köppen Climate classification as ET. This characteristically cold climatic region often sees temperatures struggling to rise above freezing even in the summer months.Throughout the year, the temperature fluctuates from a low of -1.8°C (28.8°F) in February to a high of 12.1°C (53.8°F) in July. The chilly weather is consistent, with warmth being a fleeting visitor even during the purportedly warmer summer months. Relative humidity remains fairly even, oscillating between 77% in May and 83% during the colder months of January, February, and October.
Precipitation in Stykkishólmur follows a unique pattern, contrary to many other regions. Rather than having a designated 'rainy season', rainfall is common throughout the year, ranging from 17mm (0.67") in July to 40mm (1.57") in January. Despite this constant possibility of rain, the frequency of rainy days does show seasonal variance; winters tend to have fewer rainy days, hitting a low of 9.1 days in February, while autumns see up to 15.7 rainy days in October. The city also experiences significant snowfall from December to March, peaking at 97mm (3.82") in March.
The best time to visit Stykkishólmur
Summers, being relatively warmer and drier than the other seasons, present the best window for tourism in Stykkishólmur. From June to September, daytime temperatures hover between 6.8°C (44.2°F) and 12.1°C (53.8°F). It is also the sunniest period of the year with daylight hours extending up to 21.7 hrs in June and sunshine hours peaking at 7.3 hrs in May.The worst time to visit Stykkishólmur
Winter months, specifically from December to March, pose substantial challenges for visitors. Temperatures drop below freezing, with the minimum average temperature hitting -1.8°C (28.8°F) in February. Daylight hours are scant, sinking to a mere 3.8 hrs in December. Snowfall is frequent and heavy, with the highest snowfall of 97mm (3.82") recorded in March.Spring weather in Stykkishólmur
Spring (March to May) is the transitional period from the harsh Icelandic winter to its relative summer. Temperatures gradually climb from an average high of 1.2°C (34.2°F) in March to 6.8°C (44.2°F) in May. The daylight hours increase significantly, stretching from an average of 11.8 hrs in March to 18.9 hrs in May. Rainfall remains steady while snowfall declines, disappearing completely by June.Summer weather in Stykkishólmur
In the months of June to August, Stykkishólmur experiences its summer. Despite average high temperatures only reaching between 10.3°C (50.5°F) to 12.1°C (53.8°F), this is the warmest period in the region. Days are long, with up to 21.7 hrs of daylight in June, providing ample time to explore the landscape. Rainfall reaches its annual minimum of 17mm (0.67") in July.Autumn weather in Stykkishólmur
Autumn (September to November) in Stykkishólmur sees temperatures steadily drop from 8.5°C (47.3°F) in September to 2.5°C (36.5°F) in November. The number of daylight hours reduces nearly by half from September to November, while rainfall increases to a peak of 39mm (1.54") in September. The first snow of the season often arrives in October.Winter weather in Stykkishólmur
Winter in Stykkishólmur (December to February) is characteristic of its tundra climate. The average high inches just above freezing at 0.7°C (33.3°F) in December and 1.1°C (34°F) in January, dropping to a low of -1.8°C (28.8°F) in February. Snow is prevalent during this period, with a significant snowfall of 57mm (2.24") in December and 64mm (2.52") in February. Daylight is minimal, with just 3.8 hrs in December, with the short days giving way to long, cold nights.Weather in January
In the dead of winter, Stykkishólmur, Iceland, displays its harsh, freezing climate. The mercury barely rises above freezing, with the average high reaching 1.1°C (34°F) and plunging to -1.5°C (29.3°F) at night—the lowest of the year. Weather in January »Weather in February
As the coldest period of winter comes to a close, the weather shows a slight warming trend compared to January. Although the temperature still hovers around freezing, there is a marginal drop in snowfall. The wind speed also slightly increases, with an average of 25.9km/h (16.1mph) compared to 25.2km/h (15.7mph) the previous month. Weather in February »Weather in March
Despite winter's icy grip easing, March in Stykkishólmur still exhibits cold conditions. Compared to February, the high temperature average exhibits an insignificant increase. But the snowfall, reaching an impressive 97mm (3.82") this month, surpasses even January’s levels. Weather in March »Weather in April
April marks the transition from winter to spring, and with this transition, Stykkishólmur experiences a significant temperature increase. In comparison to March, the day temperature in April reaches a high of 3.7°C (38.7°F), and the lowest temperature rises to 0.5°C (32.9°F). Weather in April »Weather in May
May in Stykkishólmur sees warmer temperatures and more sunshine, signalling the start of the brief Icelandic summer. A considerable increase in temperature from April to May makes it more hospitable. However, rainfall takes a leap to 26mm (1.02"), up from 23mm (0.91") in the previous month. Weather in May »Weather in June
June, often considered the beginning of summer, sees temperatures peaking in Stykkishólmur. Average daylight hours leap to their highest annual value, meaning the city gets a whopping 21.7 hours of daylight. Comparatively, June also brings a significant reduction in rainfall. Weather in June »Weather in July
July is characteristically the warmest month in Stykkishólmur, with temperatures reaching a comfortable 12.1°C (53.8°F). Despite it being the height of summer, there are no occurrences of snowfall. However, the city gets an increase in rainfall, from 18mm (0.71") in June to 17mm (0.67") in July. Weather in July »Weather in August
In August, Stykkishólmur experiences a slight drop in temperature when compared to July’s peak. Average rainfall increases to 32mm (1.26"), which is higher than the summer month of July. Nonetheless, the weather generally remains warm enough for outdoor activities. Weather in August »Weather in September
With September comes the turn of the season in Stykkishólmur, as the tranquillity of summer gives way to the crispness of autumn. Rainfall increases and peaks at 39mm (1.54"), the highest in the year, and more than the previous month of August. Weather in September »Weather in October
October presents a significant seasonal shift in Stykkishólmur's weather to colder autumn days. There is a noticeable drop in temperature from the previous month, and the city starts to experience the first signs of snow—signalling winter's impending arrival. Weather in October »Weather in November
November ushers in winter in Stykkishólmur, with temperatures dropping rapidly when compared to October. Snowfall significantly increases, reaching an average of 39mm (1.54"), indicating the onset of winter. Despite the chilling weather, November remains attractively mystical under a blanket of snow. Weather in November »Weather in December
December is typically the month with the shortest daylight hours in Stykkishólmur, making it one of the darkest periods of the year. The city is gripped by winter once again, with snowfall increasing to 57mm (2.24") from November’s average. Weather in December »Updated: Feb 10, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the highest humidity in Stykkishólmur, Iceland, are January, February and October, with an average relative humidity of 83%.
The month with the most rainfall in Stykkishólmur, Iceland, is January, when the rain falls for 9.3 days and typically aggregates up to 40mm (1.57") of precipitation.
In Stykkishólmur, Iceland, during the entire year, the rain falls for 139.6 days and collects up to 351mm (13.82") of precipitation.
Months with snowfall are January through May, October through December.
Throughout the year, in Stykkishólmur, there are 64.8 snowfall days, and 403mm (15.87") of snow is accumulated.
January, February, April, October through December, with an average maximum UV index of 1, are months with the lowest UV index in Stykkishólmur, Iceland.
March is the month with the most snowfall in Stykkishólmur. Snow falls for 11.2 days and accumulates 97mm (3.82") of snow.
March is the month with the coldest seawater in Stykkishólmur, Iceland, with an average sea temperature of 2.1°C (35.8°F).
The least humid month in Stykkishólmur is May, with an average relative humidity of 77%.
The month with the most sunshine in Stykkishólmur is May, with an average of 7.3h of sunshine.
June through September are months without snowfall in Stykkishólmur.
With an average of 21h and 42min of daylight, June has the longest days of the year in Stykkishólmur, Iceland.
The month with the least sunshine in Stykkishólmur is June, with an average of 0.8h of sunshine.
The months with the highest UV index in Stykkishólmur, Iceland, are June through August, with an average maximum UV index of 3.
July, characterized by an average high temperature of 12.1°C (53.8°F) and a low temperature of 8.3°C (46.9°F), is generally the warmest month in Stykkishólmur.
July is the month with the least rainfall. Rain falls for 11.1 days and accumulates 17mm (0.67") of precipitation.
The month with the warmest seawater is August, with an average sea temperature of 10.3°C (50.5°F).
Stykkishólmur witnesses the coldest weather in December, with temperatures averaging a high of 0.7°C (33.3°F) and a low of -1.8°C (28.8°F).
The month with the shortest days in Stykkishólmur, Iceland, is December, with an average of 3h and 48min of daylight.
Stykkishólmur does not utilize Daylight Saving Time (DST). GMT timezone is used over the entire year.
Average temperature
Stykkishólmur, Iceland
The warmest month (with the highest average high temperature) is July (12.1°C).
The month with the lowest average high temperature is December (0.7°C).
The month with the highest average low temperature is July (8.3°C).
The coldest months (with the lowest average low temperature) are February and December (-1.8°C).
Average pressure
Stykkishólmur, Iceland
- Average pressure in January:
996.7mbar - Average pressure in February:
998.2mbar - Average pressure in March:
1003.6mbar - Average pressure in April:
1009.1mbar - Average pressure in May:
1012.4mbar - Average pressure in June:
1014.1mbar
- Average pressure in July:
1010.2mbar - Average pressure in August:
1008.3mbar - Average pressure in September:
1003mbar - Average pressure in October:
1004.1mbar - Average pressure in November:
1002.1mbar - Average pressure in December:
998.9mbar
The month with the highest atmospheric pressure is June (1014.1mbar).
The month with the lowest atmospheric pressure is January (996.7mbar).
Average wind speed
Stykkishólmur, Iceland
- Average wind speed in January:
25.2km/h - Average wind speed in February:
25.9km/h - Average wind speed in March:
24.6km/h - Average wind speed in April:
21.8km/h - Average wind speed in May:
18.9km/h - Average wind speed in June:
14.6km/h
- Average wind speed in July:
15.1km/h - Average wind speed in August:
15.8km/h - Average wind speed in September:
18.9km/h - Average wind speed in October:
21.7km/h - Average wind speed in November:
24km/h - Average wind speed in December:
25.8km/h
The windiest month (with the highest average wind speed) is February (25.9km/h).
The calmest month (with the lowest average wind speed) is June (14.6km/h).
Average humidity
Stykkishólmur, Iceland
The months with the highest relative humidity are January, February and October (83%).
The month with the lowest relative humidity is May (77%).
Average rainfall
Stykkishólmur, Iceland
The wettest month (with the highest rainfall) is January (40mm).
The driest month (with the least rainfall) is July (17mm).
Average rainfall days
Stykkishólmur, Iceland
- Average rainfall days in January:
9.3 days - Average rainfall days in February:
9.1 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
11.7 days - Average rainfall days in May:
12.1 days - Average rainfall days in June:
10 days
- Average rainfall days in July:
11.1 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
14.6 days - Average rainfall days in October:
15.7 days - Average rainfall days in November:
11.8 days - Average rainfall days in December:
9.9 days
The month with the highest number of rainy days is October (15.7 days).
The month with the least rainy days is February (9.1 days).
Average snowfall
Stykkishólmur, Iceland
The month with the highest snowfall is March (97mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Stykkishólmur, Iceland
- Average snowfall days in January:
11.6 days - Average snowfall days in February:
9.1 days - Average snowfall days in March:
11.2 days - Average snowfall days in April:
7.7 days - Average snowfall days in May:
2.7 days - Average snowfall days in June:
0.2 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.5 days - Average snowfall days in October:
4.2 days - Average snowfall days in November:
7.1 days - Average snowfall days in December:
10.5 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are July and August (0 days).
Average sea temperature
Stykkishólmur, Iceland
The best month for swimming (with the highest average sea temperature) is August (10.3°C).
The coldest month (with the lowest average sea temperature) is March (2.1°C).
Average daylight / Average sunshine
Stykkishólmur, Iceland
- Average daylight in January:
5h and 12min - Average daylight in February:
8h and 24min - Average daylight in March:
11h and 48min - Average daylight in April:
15h and 18min - Average daylight in May:
18h and 54min - Average daylight in June:
21h and 42min
- Average daylight in July:
20h and 6min - Average daylight in August:
16h and 30min - Average daylight in September:
13h and 6min - Average daylight in October:
9h and 36min - Average daylight in November:
6h and 12min - Average daylight in December:
3h and 48min
The month with the longest days is June (Average daylight: 21h and 42min).
The month with the shortest days is December (Average daylight: 3h and 48min).
- Average sunshine in January:
2h and 12min - Average sunshine in February:
2h and 54min - Average sunshine in March:
3h and 54min - Average sunshine in April:
5h and 18min - Average sunshine in May:
7h and 18min - Average sunshine in June:
0h and 48min
- Average sunshine in July:
5h and 0min - Average sunshine in August:
7h and 6min - Average sunshine in September:
4h and 18min - Average sunshine in October:
3h and 48min - Average sunshine in November:
2h and 30min - Average sunshine in December:
2h and 36min
The month with the most sunshine is May (Average sunshine: 7h and 18min).
The month with the least sunshine is June (Average sunshine: 0h and 48min).
Average sunshine days
Stykkishólmur, Iceland
- Average sunshine days in January:
10.5 days - Average sunshine days in February:
10.3 days - Average sunshine days in March:
9.1 days - Average sunshine days in April:
10 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
16.8 days
- Average sunshine days in July:
16.8 days - Average sunshine days in August:
13.5 days - Average sunshine days in September:
12.5 days - Average sunshine days in October:
10.1 days - Average sunshine days in November:
9.8 days - Average sunshine days in December:
10 days
The months with the most sunshine days are June and July (16.8 days).
The month with the least sunshine days is March (9.1 days).
Average UV index
Stykkishólmur, Iceland
The months with the highest UV index are June, July and August (UV index 3).
The months with the lowest UV index are January, February, April, October, November and December (UV index 1).
Average cloud cover
Stykkishólmur, Iceland
The month with the most cloud cover is March (Cloud cover 72).
The months with the least cloud cover are May and June (Cloud cover 61).
Average visibility
Stykkishólmur, Iceland
The months with the highest visibility are June and July (10km).
The months with the lowest visibility are January, February, March, April, May, August, September, October, November and December (9km).
