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Monthly climate in Selfoss, Iceland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Selfoss features a subpolar climate (Cfc).Temperatures typically range between 0 °C (32 °F) and 11 °C (53 °F) through the year, but rarely can drop to -16 °C (3 °F) or can rise to as high as 24 °C (76 °F).The average annual precipitation amounts to about 1532 mm (60.3 inches) and receives 199 rainy days on the 1 mm (0.04 inches) threshold annually.Selfoss enjoys an average of 2241 hours of sunshine throughout the year, and daylight varies from 4 hours 26 minutes to 20 hours 40 minutes per day.

Monthly average temperatures in Selfoss, Iceland §

The warmest months in Selfoss are June, July and August, with daily mean temperatures ranging from 9 to 11 °C (49 - 53 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 0 °C (32 - 33 °F) throughout the day. On average each year, Selfoss experiences 0 days above 25 °C (77.0 °F) and 106 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Selfoss, Iceland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 10°C
(50°F)		 8°C
(47°F)		 9°C
(49°F)		 13°C
(56°F)		 16°C
(61°F)		 19°C
(67°F)		 24°C
(76°F)		 19°C
(66°F)		 16°C
(61°F)		 13°C
(55°F)		 11°C
(52°F)		 9°C
(49°F)
Mean maximum 8°C
(46°F)		 7°C
(45°F)		 8°C
(46°F)		 11°C
(53°F)		 14°C
(57°F)		 16°C
(61°F)		 20°C
(69°F)		 17°C
(63°F)		 14°C
(58°F)		 11°C
(52°F)		 9°C
(48°F)		 8°C
(47°F)
Average high 2°C
(36°F)		 2°C
(36°F)		 3°C
(38°F)		 7°C
(44°F)		 9°C
(49°F)		 12°C
(54°F)		 14°C
(57°F)		 14°C
(57°F)		 11°C
(51°F)		 7°C
(45°F)		 3°C
(38°F)		 2°C
(36°F)
Daily mean -0°C
(32°F)		 0°C
(32°F)		 1°C
(34°F)		 4°C
(39°F)		 7°C
(44°F)		 9°C
(49°F)		 11°C
(53°F)		 11°C
(52°F)		 8°C
(47°F)		 5°C
(42°F)		 2°C
(35°F)		 0°C
(33°F)
Average low -3°C
(28°F)		 -2°C
(28°F)		 -1°C
(30°F)		 1°C
(35°F)		 4°C
(39°F)		 7°C
(44°F)		 9°C
(49°F)		 9°C
(48°F)		 6°C
(44°F)		 3°C
(38°F)		 0°C
(32°F)		 -1°C
(30°F)
Mean minimum -10°C
(14°F)		 -11°C
(13°F)		 -9°C
(16°F)		 -6°C
(21°F)		 -1°C
(31°F)		 4°C
(39°F)		 6°C
(43°F)		 6°C
(43°F)		 1°C
(34°F)		 -2°C
(28°F)		 -5°C
(23°F)		 -8°C
(18°F)
Minimum -14°C
(7°F)		 -16°C
(3°F)		 -15°C
(5°F)		 -12°C
(11°F)		 -3°C
(27°F)		 2°C
(37°F)		 4°C
(39°F)		 5°C
(41°F)		 -2°C
(29°F)		 -5°C
(23°F)		 -8°C
(17°F)		 -11°C
(12°F)

Compare climate in Selfoss with other places

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

Monthly average precipitation in Selfoss, Iceland §

Selfoss usually has the most precipitation in January, February and September, with an average of 18 rainy days and 165 mm (6.5 inches) of precipitation per month.The driest months in Selfoss are June, July and August. On average, 90 mm (3.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Selfoss, Iceland.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 142 (5.6) 158 (6.2) 121 (4.8) 140 (5.5) 128 (5.0) 89 (3.5) 86 (3.4) 96 (3.8) 194 (7.7) 113 (4.4) 128 (5.0) 137 (5.4)
Average precipitation days (≥ 1 mm) 15 19 18 18 18 15 15 13 21 16 15 16

Monthly sunshine hours in Selfoss, Iceland §

The sunniest months in Selfoss are May, June and July, when the sun shines an average of 10 hours 34 minutes a day.Least sunny months in Selfoss: January, November and December receive an average of 1 hours 32 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Selfoss, Iceland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 38 88 192 211 334 328 310 297 193 142 73 29
Mean daily daylight hours 5h 35m 8h 35m 11h 50m 15h 8m 18h 25m 20h 40m 19h 22m 16h 11m 12h 55m 9h 40m 6h 29m 4h 26m

Solar UV radiation in Selfoss, Iceland §

Selfoss experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 5 - 6, which corresponds to the Moderate / High 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 Selfoss UV Index data.

Average daily maximum UV levels by month for Selfoss, Iceland.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 1 2 3 5 6 6 4 3 2 1 1