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Monthly climate in Slemmestad, Viken, Norway

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Slemmestad features a humid continental climate (Dfb).Temperatures typically range between -2 °C (28 °F) and 18 °C (65 °F) through the year, but rarely can drop to -19 °C (-1 °F) or can rise to as high as 33 °C (91 °F).The average annual precipitation amounts to about 1019 mm (40.1 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually.Slemmestad enjoys an average of 3415 hours of sunshine throughout the year, and daylight varies from 6 hours 3 minutes to 18 hours 37 minutes per day.

Monthly average temperatures in Slemmestad, Viken, Norway §

The warmest months in Slemmestad are June, July and August, with daily mean temperatures ranging from 16 to 18 °C (62 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to -1 °C (28 - 30 °F) throughout the day. On average each year, Slemmestad experiences 17 days above 25 °C (77.0 °F) and 112 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Slemmestad, Viken, 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 9°C
(49°F)		 9°C
(48°F)		 19°C
(67°F)		 23°C
(74°F)		 30°C
(87°F)		 30°C
(87°F)		 33°C
(91°F)		 28°C
(83°F)		 25°C
(78°F)		 17°C
(63°F)		 14°C
(58°F)		 8°C
(47°F)
Mean maximum 7°C
(44°F)		 7°C
(45°F)		 14°C
(58°F)		 19°C
(67°F)		 24°C
(76°F)		 25°C
(78°F)		 28°C
(83°F)		 26°C
(79°F)		 22°C
(72°F)		 15°C
(59°F)		 11°C
(52°F)		 7°C
(45°F)
Average high 0°C
(33°F)		 1°C
(34°F)		 5°C
(42°F)		 11°C
(52°F)		 15°C
(60°F)		 21°C
(70°F)		 23°C
(73°F)		 20°C
(69°F)		 16°C
(61°F)		 10°C
(51°F)		 5°C
(41°F)		 1°C
(33°F)
Daily mean -2°C
(28°F)		 -2°C
(29°F)		 1°C
(34°F)		 6°C
(43°F)		 11°C
(52°F)		 16°C
(62°F)		 18°C
(65°F)		 16°C
(62°F)		 13°C
(55°F)		 8°C
(46°F)		 3°C
(38°F)		 -1°C
(30°F)
Average low -5°C
(24°F)		 -5°C
(24°F)		 -3°C
(27°F)		 1°C
(34°F)		 6°C
(43°F)		 12°C
(53°F)		 13°C
(57°F)		 13°C
(55°F)		 10°C
(50°F)		 5°C
(42°F)		 1°C
(34°F)		 -3°C
(27°F)
Mean minimum -13°C
(8°F)		 -14°C
(8°F)		 -9°C
(16°F)		 -5°C
(23°F)		 -0°C
(32°F)		 7°C
(45°F)		 10°C
(50°F)		 8°C
(46°F)		 5°C
(41°F)		 -1°C
(31°F)		 -6°C
(21°F)		 -10°C
(14°F)
Minimum -18°C
(-1°F)		 -19°C
(-1°F)		 -16°C
(3°F)		 -12°C
(11°F)		 -1°C
(30°F)		 6°C
(42°F)		 8°C
(48°F)		 6°C
(43°F)		 1°C
(35°F)		 -3°C
(27°F)		 -8°C
(18°F)		 -14°C
(6°F)

Compare climate in Slemmestad with other places

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

Monthly average precipitation in Slemmestad, Viken, Norway §

Slemmestad usually has the most precipitation in September, October and December, with an average of 14 rainy days and 114 mm (4.5 inches) of precipitation per month.The driest months in Slemmestad are January, February and April. On average, 54 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Slemmestad, Viken, 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) 60 (2.4) 66 (2.6) 66 (2.6) 36 (1.4) 81 (3.2) 84 (3.3) 93 (3.7) 87 (3.4) 106 (4.2) 128 (5.0) 103 (4.1) 107 (4.2)
Average precipitation days (≥ 1 mm) 9 10 9 5 11 12 11 13 12 15 13 16

Monthly sunshine hours in Slemmestad, Viken, Norway §

The sunniest months in Slemmestad are May, June and July, when the sun shines an average of 14 hours 36 minutes a day.Least sunny months in Slemmestad: January, November and December receive an average of 3 hours 31 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Slemmestad, Viken, 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 92 179 288 370 418 454 471 402 280 225 132 99
Mean daily daylight hours 6h 51m 9h 10m 11h 51m 14h 36m 17h 9m 18h 37m 17h 49m 15h 27m 12h 47m 10h 4m 7h 31m 6h 3m

Solar UV radiation in Slemmestad, Viken, Norway §

Slemmestad experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 5 - 7, which corresponds to the Moderate / High category of sun exposure.January, November 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 Slemmestad UV Index data.

Average daily maximum UV levels by month for Slemmestad, Viken, 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 2 3 4 5 7 7 5 4 2 1 1