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Monthly climate in Stykkisholmur, Iceland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Stykkisholmur features a ice cap climate ET). Temperatures typically range between 0 °C (33 °F) and 11 °C (52 °F) through the year, but rarely can drop to -12 °C (11 °F) or can rise to as high as 19 °C (66 °F). The average annual precipitation amounts to about 1091 mm (43.0 inches) and receives 184 rainy days on the 1 mm (0.04 inches) threshold annually. Stykkisholmur enjoys an average of 2085 hours of sunshine throughout the year, and daylight varies from 3 hours 46 minutes to 21 hours 41 minutes per day.

Monthly average temperatures in Stykkisholmur, Iceland

The warmest months in Stykkisholmur are June, July and August, with daily mean temperatures ranging from 9 to 11 °C (48 - 52 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 0 to 1 °C (33 - 34 °F) throughout the day. On average each year, Stykkisholmur experiences 0 days above 25 °C (77.0 °F) and 93 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Stykkisholmur. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum10°C
(50°F)		8°C
(47°F)		8°C
(48°F)		13°C
(56°F)		15°C
(59°F)		18°C
(64°F)		19°C
(66°F)		18°C
(65°F)		14°C
(58°F)		11°C
(52°F)		12°C
(53°F)		10°C
(50°F)
Mean maximum8°C
(46°F)		7°C
(45°F)		7°C
(45°F)		11°C
(51°F)		13°C
(56°F)		14°C
(57°F)		17°C
(63°F)		16°C
(61°F)		14°C
(57°F)		10°C
(51°F)		9°C
(49°F)		9°C
(48°F)
Average high2°C
(36°F)		2°C
(36°F)		3°C
(38°F)		6°C
(43°F)		8°C
(47°F)		10°C
(51°F)		12°C
(55°F)		12°C
(55°F)		10°C
(50°F)		7°C
(45°F)		4°C
(39°F)		3°C
(37°F)
Daily mean0°C
(33°F)		0°C
(33°F)		1°C
(34°F)		4°C
(39°F)		6°C
(43°F)		9°C
(48°F)		11°C
(52°F)		11°C
(52°F)		8°C
(48°F)		6°C
(42°F)		2°C
(37°F)		1°C
(35°F)
Average low-2°C
(29°F)		-1°C
(30°F)		-1°C
(31°F)		2°C
(35°F)		4°C
(39°F)		7°C
(45°F)		9°C
(49°F)		9°C
(49°F)		7°C
(45°F)		4°C
(39°F)		1°C
(34°F)		-0°C
(32°F)
Mean minimum-7°C
(19°F)		-8°C
(18°F)		-5°C
(23°F)		-5°C
(23°F)		-0°C
(32°F)		4°C
(39°F)		7°C
(44°F)		6°C
(43°F)		2°C
(36°F)		-0°C
(32°F)		-3°C
(27°F)		-7°C
(21°F)
Minimum-10°C
(14°F)		-12°C
(11°F)		-8°C
(17°F)		-8°C
(17°F)		-2°C
(29°F)		2°C
(37°F)		6°C
(43°F)		5°C
(40°F)		0°C
(32°F)		-2°C
(29°F)		-4°C
(24°F)		-9°C
(17°F)

Compare climate in Stykkisholmur with other places

Compare temperature, precipitation, sunshine, UV index in Stykkisholmur, Iceland with other places around the world.

Monthly average precipitation in Stykkisholmur, Iceland

Stykkisholmur usually has the most precipitation in February, April and September, with an average of 17 rainy days and 119 mm (4.7 inches) of precipitation per month. The driest months in Stykkisholmur are June, July and August. On average, 68 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Stykkisholmur. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)94 (3.7)101 (4.0)90 (3.5)101 (4.0)82 (3.2)66 (2.6)68 (2.7)71 (2.8)155 (6.1)91 (3.6)84 (3.3)89 (3.5)
Average precipitation days (≥ 1 mm)161715161413141219161517

Monthly sunshine hours in Stykkisholmur, Iceland

The sunniest months in Stykkisholmur are May, June and July, when the sun shines an average of 10 hours 11 minutes a day. Least sunny months in Stykkisholmur: January, November and December receive an average of 1 hours 0 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Stykkisholmur. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours23801862273373052932621751235215
Mean daily daylight hours5h 6m8h 23m11h 49m15h 19m18h 54m21h 41m20h 1m16h 26m12h 58m9h 32m6h 6m3h 46m

Solar UV radiation in Stykkisholmur, Iceland

Stykkisholmur experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 5 - 5, which corresponds to the Moderate category of sun exposure. January, February and November are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Stykkisholmur UV Index data.

Average daily maximum UV levels by month for Stykkisholmur. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)112355543211