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Monthly climate in Hafnarfjoerdur, Iceland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Hafnarfjoerdur features a subpolar climate (Cfc). Temperatures typically range between 1 °C (33 °F) and 11 °C (53 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 23 °C (74 °F). The average annual precipitation amounts to about 1388 mm (54.7 inches) and receives 205 rainy days on the 1 mm (0.04 inches) threshold annually. Hafnarfjoerdur enjoys an average of 2298 hours of sunshine throughout the year, and daylight varies from 4 hours 21 minutes to 20 hours 46 minutes per day.

Monthly average temperatures in Hafnarfjoerdur, Iceland

The warmest months in Hafnarfjoerdur 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 1 to 1 °C (33 - 34 °F) throughout the day. On average each year, Hafnarfjoerdur experiences 0 days above 25 °C (77.0 °F) and 95 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hafnarfjoerdur. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum10°C
(51°F)		9°C
(48°F)		10°C
(49°F)		13°C
(56°F)		15°C
(59°F)		19°C
(66°F)		23°C
(74°F)		19°C
(66°F)		16°C
(60°F)		13°C
(55°F)		11°C
(52°F)		10°C
(50°F)
Mean maximum8°C
(47°F)		8°C
(46°F)		8°C
(47°F)		11°C
(53°F)		13°C
(56°F)		15°C
(59°F)		20°C
(68°F)		17°C
(63°F)		14°C
(58°F)		11°C
(52°F)		9°C
(49°F)		9°C
(48°F)
Average high3°C
(37°F)		3°C
(37°F)		4°C
(39°F)		7°C
(44°F)		9°C
(49°F)		12°C
(53°F)		14°C
(57°F)		13°C
(56°F)		10°C
(51°F)		7°C
(45°F)		4°C
(39°F)		3°C
(37°F)
Daily mean1°C
(33°F)		1°C
(34°F)		2°C
(35°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
(36°F)		1°C
(34°F)
Average low-2°C
(29°F)		-2°C
(29°F)		-1°C
(31°F)		2°C
(36°F)		4°C
(39°F)		7°C
(44°F)		9°C
(48°F)		9°C
(48°F)		6°C
(43°F)		3°C
(38°F)		0°C
(33°F)		-1°C
(31°F)
Mean minimum-8°C
(18°F)		-10°C
(15°F)		-7°C
(19°F)		-5°C
(23°F)		-1°C
(31°F)		4°C
(39°F)		6°C
(43°F)		6°C
(43°F)		1°C
(34°F)		-2°C
(29°F)		-5°C
(23°F)		-7°C
(19°F)
Minimum-11°C
(13°F)		-18°C
(0°F)		-11°C
(13°F)		-9°C
(16°F)		-3°C
(27°F)		2°C
(36°F)		3°C
(38°F)		4°C
(40°F)		-2°C
(29°F)		-5°C
(23°F)		-9°C
(16°F)		-9°C
(16°F)

Compare climate in Hafnarfjoerdur with other places

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

Monthly average precipitation in Hafnarfjoerdur, Iceland

Hafnarfjoerdur usually has the most precipitation in February, April and September, with an average of 19 rainy days and 145 mm (5.7 inches) of precipitation per month. The driest months in Hafnarfjoerdur are June, July and August. On average, 90 mm (3.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hafnarfjoerdur. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)118 (4.6)135 (5.3)105 (4.1)138 (5.4)124 (4.9)97 (3.8)81 (3.2)90 (3.6)163 (6.4)111 (4.4)112 (4.4)114 (4.5)
Average precipitation days (≥ 1 mm)161918171817161422171516

Monthly sunshine hours in Hafnarfjoerdur, Iceland

The sunniest months in Hafnarfjoerdur are May, June and July, when the sun shines an average of 10 hours 50 minutes a day. Least sunny months in Hafnarfjoerdur: January, November and December receive an average of 1 hours 36 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hafnarfjoerdur. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours41901962153443383152972061477828
Mean daily daylight hours5h 32m8h 34m11h 50m15h 9m18h 28m20h 46m19h 26m16h 12m12h 55m9h 39m6h 26m4h 21m

Solar UV radiation in Hafnarfjoerdur, Iceland

Hafnarfjoerdur 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 Hafnarfjoerdur UV Index data.

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