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Monthly climate in Reydarfjoerdur, Iceland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Reydarfjoerdur features a ice cap climate ET). Temperatures typically range between -3 °C (28 °F) and 10 °C (50 °F) through the year, but rarely can drop to -19 °C (-3 °F) or can rise to as high as 21 °C (70 °F). The average annual precipitation amounts to about 1653 mm (65.1 inches) and receives 203 rainy days on the 1 mm (0.04 inches) threshold annually. Reydarfjoerdur enjoys an average of 2082 hours of sunshine throughout the year, and daylight varies from 3 hours 48 minutes to 21 hours 38 minutes per day.

Monthly average temperatures in Reydarfjoerdur, Iceland

The warmest months in Reydarfjoerdur are June, July and August, with daily mean temperatures ranging from 7 to 10 °C (45 - 50 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to -2 °C (28 - 29 °F) throughout the day. On average each year, Reydarfjoerdur experiences 0 days above 25 °C (77.0 °F) and 170 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Reydarfjoerdur. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum8°C
(46°F)		7°C
(45°F)		10°C
(50°F)		8°C
(47°F)		15°C
(59°F)		20°C
(67°F)		20°C
(68°F)		21°C
(70°F)		18°C
(65°F)		9°C
(48°F)		8°C
(47°F)		9°C
(48°F)
Mean maximum7°C
(44°F)		6°C
(43°F)		6°C
(43°F)		7°C
(45°F)		12°C
(55°F)		15°C
(60°F)		17°C
(62°F)		16°C
(61°F)		14°C
(57°F)		8°C
(46°F)		6°C
(44°F)		7°C
(45°F)
Average high0°C
(32°F)		0°C
(32°F)		1°C
(34°F)		2°C
(36°F)		5°C
(42°F)		10°C
(50°F)		12°C
(54°F)		11°C
(52°F)		9°C
(48°F)		4°C
(39°F)		1°C
(34°F)		-0°C
(32°F)
Daily mean-2°C
(28°F)		-2°C
(29°F)		-1°C
(30°F)		0°C
(33°F)		3°C
(38°F)		7°C
(45°F)		10°C
(50°F)		9°C
(48°F)		6°C
(44°F)		2°C
(36°F)		-1°C
(30°F)		-3°C
(28°F)
Average low-5°C
(23°F)		-4°C
(25°F)		-3°C
(26°F)		-2°C
(29°F)		1°C
(33°F)		5°C
(41°F)		7°C
(45°F)		7°C
(44°F)		4°C
(40°F)		-0°C
(32°F)		-4°C
(26°F)		-5°C
(23°F)
Mean minimum-13°C
(8°F)		-12°C
(11°F)		-9°C
(15°F)		-10°C
(15°F)		-4°C
(24°F)		0°C
(33°F)		4°C
(40°F)		3°C
(38°F)		-1°C
(30°F)		-6°C
(21°F)		-12°C
(11°F)		-17°C
(2°F)
Minimum-19°C
(-3°F)		-16°C
(4°F)		-13°C
(9°F)		-12°C
(11°F)		-7°C
(19°F)		-2°C
(29°F)		2°C
(35°F)		1°C
(34°F)		-3°C
(26°F)		-11°C
(12°F)		-13°C
(8°F)		-19°C
(-2°F)

Compare climate in Reydarfjoerdur with other places

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

Monthly average precipitation in Reydarfjoerdur, Iceland

Reydarfjoerdur usually has the most precipitation in February, October and December, with an average of 19 rainy days and 215 mm (8.4 inches) of precipitation per month. The driest months in Reydarfjoerdur are May, July and August. On average, 83 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Reydarfjoerdur. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)123 (4.9)212 (8.4)146 (5.7)94 (3.7)90 (3.5)101 (4.0)77 (3.0)83 (3.3)153 (6.0)217 (8.5)143 (5.6)214 (8.4)
Average precipitation days (≥ 1 mm)152017131616151718211718

Monthly sunshine hours in Reydarfjoerdur, Iceland

The sunniest months in Reydarfjoerdur are May, June and July, when the sun shines an average of 9 hours 51 minutes a day. Least sunny months in Reydarfjoerdur: January, November and December receive an average of 1 hours 6 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Reydarfjoerdur. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours27841842542863033162581871046013
Mean daily daylight hours5h 7m8h 24m11h 49m15h 18m18h 53m21h 38m20h 0m16h 25m12h 58m9h 33m6h 7m3h 48m

Solar UV radiation in Reydarfjoerdur, Iceland

Reydarfjoerdur 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 Reydarfjoerdur UV Index data.

Average daily maximum UV levels by month for Reydarfjoerdur. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)112456543211