nomadseason

Monthly climate in Seltjarnarnes, Iceland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Seltjarnarnes 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 -18 °C (-1 °F) or can rise to as high as 21 °C (71 °F). The average annual precipitation amounts to about 1297 mm (51.1 inches) and receives 203 rainy days on the 1 mm (0.04 inches) threshold annually. Seltjarnarnes enjoys an average of 2167 hours of sunshine throughout the year, and daylight varies from 4 hours 19 minutes to 20 hours 49 minutes per day.

Monthly average temperatures in Seltjarnarnes, Iceland

The warmest months in Seltjarnarnes 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, Seltjarnarnes experiences 0 days above 25 °C (77.0 °F) and 100 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Seltjarnarnes. 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)		9°C
(49°F)		14°C
(57°F)		15°C
(60°F)		18°C
(65°F)		21°C
(71°F)		20°C
(68°F)		15°C
(60°F)		13°C
(56°F)		11°C
(53°F)		10°C
(50°F)
Mean maximum8°C
(47°F)		7°C
(46°F)		8°C
(46°F)		11°C
(53°F)		14°C
(57°F)		15°C
(59°F)		19°C
(67°F)		18°C
(64°F)		14°C
(58°F)		11°C
(52°F)		9°C
(49°F)		8°C
(47°F)
Average high2°C
(36°F)		2°C
(36°F)		3°C
(38°F)		7°C
(44°F)		9°C
(49°F)		11°C
(53°F)		13°C
(57°F)		13°C
(56°F)		10°C
(51°F)		7°C
(45°F)		3°C
(38°F)		2°C
(36°F)
Daily mean-0°C
(32°F)		0°C
(33°F)		1°C
(34°F)		4°C
(40°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)		2°C
(35°F)		4°C
(40°F)		7°C
(45°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
(12°F)		-8°C
(19°F)		-6°C
(22°F)		-1°C
(31°F)		4°C
(39°F)		6°C
(43°F)		6°C
(43°F)		1°C
(34°F)		-1°C
(30°F)		-6°C
(22°F)		-9°C
(17°F)
Minimum-13°C
(8°F)		-18°C
(-1°F)		-13°C
(9°F)		-8°C
(17°F)		-3°C
(27°F)		2°C
(36°F)		4°C
(40°F)		5°C
(41°F)		-2°C
(29°F)		-4°C
(25°F)		-10°C
(15°F)		-13°C
(9°F)

Compare climate in Seltjarnarnes with other places

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

Monthly average precipitation in Seltjarnarnes, Iceland

Seltjarnarnes usually has the most precipitation in February, April and September, with an average of 18 rainy days and 137 mm (5.4 inches) of precipitation per month. The driest months in Seltjarnarnes are June, July and August. On average, 84 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Seltjarnarnes. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)113 (4.5)125 (4.9)103 (4.1)121 (4.8)113 (4.4)92 (3.6)75 (3.0)83 (3.3)164 (6.5)96 (3.8)105 (4.1)106 (4.2)
Average precipitation days (≥ 1 mm)161818181816161520161517

Monthly sunshine hours in Seltjarnarnes, Iceland

The sunniest months in Seltjarnarnes are May, June and July, when the sun shines an average of 10 hours 24 minutes a day. Least sunny months in Seltjarnarnes: January, November and December receive an average of 1 hours 21 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Seltjarnarnes. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours31841852113363123082811861346924
Mean daily daylight hours5h 30m8h 33m11h 50m15h 10m18h 30m20h 49m19h 29m16h 13m12h 55m9h 39m6h 25m4h 19m

Solar UV radiation in Seltjarnarnes, Iceland

Seltjarnarnes 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 Seltjarnarnes UV Index data.

Average daily maximum UV levels by month for Seltjarnarnes. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)112356643211