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Monthly climate in Tromso, Norway

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Tromso features a subarctic climate (Dfc).Temperatures typically range between -6 °C (21 °F) and 12 °C (54 °F) through the year, but rarely can drop to -23 °C (-9 °F) or can rise to as high as 28 °C (82 °F).The average annual precipitation amounts to about 1323 mm (52.1 inches) and receives 200 rainy days on the 1 mm (0.04 inches) threshold annually.Tromso enjoys an average of 2832 hours of sunshine throughout the year, and daylight varies from 0 hours 0 minutes to 24 hours 0 minutes per day.

Monthly average temperatures in Tromso, Norway §

The warmest months in Tromso are June, July and August, with daily mean temperatures ranging from 9 to 12 °C (49 - 54 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -4 °C (21 - 25 °F) throughout the day. On average each year, Tromso experiences 0 days above 25 °C (77.0 °F) and 161 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Tromso, Norway.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 7°C
(45°F)		 7°C
(44°F)		 9°C
(48°F)		 14°C
(57°F)		 21°C
(70°F)		 23°C
(73°F)		 28°C
(82°F)		 27°C
(80°F)		 20°C
(69°F)		 16°C
(60°F)		 10°C
(50°F)		 8°C
(46°F)
Mean maximum 6°C
(42°F)		 5°C
(42°F)		 5°C
(41°F)		 9°C
(48°F)		 16°C
(62°F)		 20°C
(68°F)		 24°C
(75°F)		 22°C
(72°F)		 18°C
(65°F)		 12°C
(55°F)		 8°C
(46°F)		 6°C
(44°F)
Average high -3°C
(27°F)		 -3°C
(26°F)		 -1°C
(31°F)		 3°C
(37°F)		 7°C
(45°F)		 12°C
(53°F)		 15°C
(59°F)		 14°C
(57°F)		 11°C
(52°F)		 5°C
(41°F)		 1°C
(34°F)		 -2°C
(29°F)
Daily mean -5°C
(23°F)		 -6°C
(21°F)		 -3°C
(26°F)		 0°C
(33°F)		 5°C
(41°F)		 9°C
(49°F)		 12°C
(54°F)		 11°C
(53°F)		 8°C
(47°F)		 3°C
(37°F)		 -1°C
(31°F)		 -4°C
(25°F)
Average low -8°C
(19°F)		 -9°C
(17°F)		 -6°C
(21°F)		 -3°C
(28°F)		 2°C
(36°F)		 6°C
(44°F)		 9°C
(49°F)		 9°C
(48°F)		 6°C
(43°F)		 1°C
(34°F)		 -3°C
(27°F)		 -7°C
(20°F)
Mean minimum -18°C
(0°F)		 -18°C
(1°F)		 -15°C
(6°F)		 -12°C
(11°F)		 -5°C
(23°F)		 4°C
(40°F)		 5°C
(42°F)		 5°C
(41°F)		 1°C
(34°F)		 -6°C
(21°F)		 -13°C
(9°F)		 -16°C
(4°F)
Minimum -23°C
(-9°F)		 -21°C
(-5°F)		 -18°C
(1°F)		 -14°C
(7°F)		 -8°C
(18°F)		 1°C
(34°F)		 5°C
(41°F)		 4°C
(39°F)		 -1°C
(30°F)		 -11°C
(13°F)		 -22°C
(-7°F)		 -21°C
(-5°F)

Compare climate in Tromso with other places

Compare temperature, precipitation, sunshine, UV index in Tromso, Norway with other places around the world.

Monthly average precipitation in Tromso, Norway §

Tromso usually has the most precipitation in March, June and September, with an average of 18 rainy days and 134 mm (5.3 inches) of precipitation per month.The driest months in Tromso are January, October and December. On average, 88 mm (3.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tromso, Norway.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) 97 (3.8) 99 (3.9) 139 (5.5) 119 (4.7) 98 (3.9) 130 (5.1) 100 (4.0) 128 (5.0) 132 (5.2) 87 (3.4) 113 (4.5) 80 (3.1)
Average precipitation days (≥ 1 mm) 13 16 19 17 17 18 14 19 17 16 19 15

Monthly sunshine hours in Tromso, Norway §

The sunniest months in Tromso are May, June and July, when the sun shines an average of 14 hours 27 minutes a day.Least sunny months in Tromso: January, November and December receive an average of 0 hours 22 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tromso, Norway.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 10 102 238 333 432 443 453 366 262 162 24 0
Mean daily daylight hours 4h 27m 7h 18m 11h 45m 16h 15m 22h 10m 24h 0m 23h 33m 17h 53m 13h 13m 8h 52m 6h 27m 0h 0m

Solar UV radiation in Tromso, Norway §

Tromso experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 4 - 5, which corresponds to the Moderate category of sun exposure.February, October and December 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 Tromso UV Index data.

Average daily maximum UV levels by month for Tromso, Norway.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 4 5 5 4 2 1 1 0