nomadseason

Monthly climate in Siglufjoerdur, Iceland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Siglufjoerdur features a ice cap climate ET). Temperatures typically range between 1 °C (34 °F) and 9 °C (48 °F) through the year, but rarely can drop to -8 °C (18 °F) or can rise to as high as 17 °C (63 °F). The average annual precipitation amounts to about 1265 mm (49.8 inches) and receives 202 rainy days on the 1 mm (0.04 inches) threshold annually. Siglufjoerdur enjoys an average of 1924 hours of sunshine throughout the year, and daylight varies from 2 hours 56 minutes to 23 hours 33 minutes per day.

Monthly average temperatures in Siglufjoerdur, Iceland

The warmest months in Siglufjoerdur are July, August and September, with daily mean temperatures ranging from 7 to 9 °C (46 - 48 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 1 to 1 °C (34 - 34 °F) throughout the day. On average each year, Siglufjoerdur experiences 0 days above 25 °C (77.0 °F) and 81 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Siglufjoerdur. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum9°C
(48°F)		9°C
(48°F)		8°C
(46°F)		8°C
(47°F)		12°C
(53°F)		13°C
(56°F)		14°C
(58°F)		17°C
(63°F)		13°C
(56°F)		9°C
(49°F)		10°C
(49°F)		10°C
(50°F)
Mean maximum8°C
(46°F)		7°C
(44°F)		6°C
(43°F)		7°C
(45°F)		10°C
(50°F)		11°C
(52°F)		13°C
(55°F)		13°C
(55°F)		12°C
(54°F)		8°C
(47°F)		8°C
(47°F)		7°C
(46°F)
Average high2°C
(36°F)		2°C
(36°F)		2°C
(36°F)		3°C
(38°F)		5°C
(41°F)		7°C
(46°F)		9°C
(49°F)		10°C
(50°F)		8°C
(48°F)		6°C
(42°F)		3°C
(39°F)		3°C
(37°F)
Daily mean1°C
(34°F)		1°C
(34°F)		1°C
(34°F)		2°C
(36°F)		4°C
(39°F)		7°C
(44°F)		9°C
(48°F)		9°C
(48°F)		7°C
(46°F)		5°C
(41°F)		2°C
(37°F)		1°C
(35°F)
Average low-1°C
(31°F)		-0°C
(32°F)		-0°C
(32°F)		1°C
(34°F)		3°C
(37°F)		6°C
(43°F)		8°C
(46°F)		8°C
(47°F)		6°C
(44°F)		4°C
(39°F)		1°C
(35°F)		0°C
(33°F)
Mean minimum-5°C
(22°F)		-3°C
(26°F)		-5°C
(24°F)		-5°C
(24°F)		-1°C
(31°F)		3°C
(37°F)		5°C
(42°F)		6°C
(44°F)		3°C
(37°F)		0°C
(33°F)		-1°C
(30°F)		-4°C
(25°F)
Minimum-8°C
(18°F)		-5°C
(23°F)		-8°C
(19°F)		-8°C
(18°F)		-2°C
(28°F)		2°C
(35°F)		4°C
(40°F)		5°C
(41°F)		1°C
(35°F)		-2°C
(29°F)		-3°C
(28°F)		-5°C
(24°F)

Compare climate in Siglufjoerdur with other places

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

Monthly average precipitation in Siglufjoerdur, Iceland

Siglufjoerdur usually has the most precipitation in September, October and December, with an average of 19 rainy days and 148 mm (5.8 inches) of precipitation per month. The driest months in Siglufjoerdur are April, May and June. On average, 70 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Siglufjoerdur. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)118 (4.6)104 (4.1)101 (4.0)79 (3.1)59 (2.3)72 (2.8)88 (3.5)84 (3.3)159 (6.3)147 (5.8)116 (4.6)138 (5.4)
Average precipitation days (≥ 1 mm)191719141315151319201820

Monthly sunshine hours in Siglufjoerdur, Iceland

The sunniest months in Siglufjoerdur are May, June and July, when the sun shines an average of 9 hours 34 minutes a day. Least sunny months in Siglufjoerdur: January, November and December receive an average of 0 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Siglufjoerdur. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours115815925331328428327015890362
Mean daily daylight hours4h 33m8h 11m11h 49m15h 30m19h 28m23h 33m20h 55m16h 42m13h 1m9h 24m5h 42m2h 56m

Solar UV radiation in Siglufjoerdur, Iceland

Siglufjoerdur 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 Siglufjoerdur UV Index data.

Average daily maximum UV levels by month for Siglufjoerdur. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)112356543211