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Monthly climate in Sundsvall, Västernorrland, Sweden

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sundsvall features a subarctic climate (Dfc).Temperatures typically range between -5 °C (23 °F) and 16 °C (61 °F) through the year, but rarely can drop to -28 °C (-18 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 695 mm (27.4 inches) and receives 126 rainy days on the 1 mm (0.04 inches) threshold annually.Sundsvall enjoys an average of 3359 hours of sunshine throughout the year, and daylight varies from 5 hours 8 minutes to 19 hours 43 minutes per day.

Monthly average temperatures in Sundsvall, Västernorrland, Sweden §

The warmest months in Sundsvall are June, July and August, with daily mean temperatures ranging from 15 to 16 °C (58 - 61 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to -3 °C (23 - 27 °F) throughout the day. On average each year, Sundsvall experiences 8 days above 25 °C (77.0 °F) and 154 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sundsvall, Västernorrland, Sweden.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 8°C
(47°F)		 8°C
(47°F)		 13°C
(55°F)		 21°C
(70°F)		 27°C
(81°F)		 32°C
(90°F)		 30°C
(87°F)		 27°C
(82°F)		 21°C
(71°F)		 20°C
(68°F)		 13°C
(56°F)		 7°C
(46°F)
Mean maximum 5°C
(42°F)		 6°C
(42°F)		 11°C
(52°F)		 17°C
(63°F)		 22°C
(73°F)		 24°C
(75°F)		 27°C
(80°F)		 25°C
(77°F)		 19°C
(67°F)		 14°C
(57°F)		 8°C
(47°F)		 5°C
(42°F)
Average high -2°C
(29°F)		 -2°C
(29°F)		 3°C
(37°F)		 8°C
(46°F)		 13°C
(56°F)		 19°C
(67°F)		 21°C
(69°F)		 19°C
(67°F)		 14°C
(57°F)		 8°C
(46°F)		 2°C
(36°F)		 -1°C
(30°F)
Daily mean -5°C
(24°F)		 -5°C
(23°F)		 -1°C
(30°F)		 3°C
(38°F)		 9°C
(48°F)		 15°C
(58°F)		 16°C
(61°F)		 15°C
(59°F)		 10°C
(51°F)		 5°C
(42°F)		 0°C
(32°F)		 -3°C
(27°F)
Average low -8°C
(18°F)		 -8°C
(18°F)		 -6°C
(22°F)		 -2°C
(29°F)		 3°C
(38°F)		 9°C
(49°F)		 11°C
(52°F)		 10°C
(50°F)		 7°C
(44°F)		 3°C
(37°F)		 -2°C
(28°F)		 -6°C
(22°F)
Mean minimum -20°C
(-4°F)		 -18°C
(0°F)		 -16°C
(4°F)		 -9°C
(17°F)		 -3°C
(28°F)		 4°C
(40°F)		 5°C
(42°F)		 4°C
(39°F)		 0°C
(33°F)		 -5°C
(23°F)		 -11°C
(12°F)		 -15°C
(5°F)
Minimum -28°C
(-18°F)		 -22°C
(-7°F)		 -23°C
(-10°F)		 -14°C
(7°F)		 -4°C
(25°F)		 1°C
(34°F)		 4°C
(40°F)		 2°C
(36°F)		 -2°C
(29°F)		 -8°C
(18°F)		 -15°C
(5°F)		 -22°C
(-7°F)

Compare climate in Sundsvall with other places

Compare temperature, precipitation, sunshine, UV index in Sundsvall, Västernorrland, Sweden with other places around the world.

Monthly average precipitation in Sundsvall, Västernorrland, Sweden §

Sundsvall usually has the most precipitation in July, October and December, with an average of 12 rainy days and 81 mm (3.2 inches) of precipitation per month.The driest months in Sundsvall are February, April and May. On average, 37 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sundsvall, Västernorrland, Sweden.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) 55 (2.1) 44 (1.7) 45 (1.8) 30 (1.2) 37 (1.5) 57 (2.3) 77 (3.0) 74 (2.9) 64 (2.5) 89 (3.5) 47 (1.9) 76 (3.0)
Average precipitation days (≥ 1 mm) 9 8 9 8 9 9 11 13 13 14 10 13

Monthly sunshine hours in Sundsvall, Västernorrland, Sweden §

The sunniest months in Sundsvall are May, June and July, when the sun shines an average of 15 hours 37 minutes a day.Least sunny months in Sundsvall: January, November and December receive an average of 2 hours 32 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sundsvall, Västernorrland, Sweden.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 64 160 265 365 448 490 498 410 281 204 115 53
Mean daily daylight hours 6h 7m 8h 49m 11h 50m 14h 54m 17h 52m 19h 43m 18h 42m 15h 53m 12h 52m 9h 50m 6h 55m 5h 8m

Solar UV radiation in Sundsvall, Västernorrland, Sweden §

Sundsvall experiences the highest level of ultraviolet (UV) radiation in June, July and August, 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 Sundsvall UV Index data.

Average daily maximum UV levels by month for Sundsvall, Västernorrland, Sweden.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 3 4 5 6 6 5 3 2 1 1