Climate in Viken

Average daytime and nighttime temperatures

All climate diagrams on this site result from the collected data from four measuring weather stations in Viken.
All data correspond to the average monthly values of the last 20 years.

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The climate widely corresponds to Central European weather conditions. It is cold, wet and a few beautiful summer months are also happening during a year. It won't be really warm up here and given to the water temperatures of 17 degrees maximum you will leave your bathing clothes at home. Due to the warmer temperatures, the best time for traveling is from May to September. Less attractive are the cold months from October to March.
Overview: Climate in Norway
Daylengths and sun positions in Norway
Compare climate with other regions or countries
Sunshine hours per day
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 9 hours per day, June is the sunniest month in the province of Viken. In December, the sun shines the least.
Rain days per month
A rain day is a day on which at least 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 13 rain days, August offers the most rain days, while April has the fewest.
Precipitation amount in mm/day
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 1.1 mm, the least amount of rain falls in March. August, on the other hand, has the most rain.
Water temperatures in °C
Water temperature depends not only on solar radiation within the same region, but also on ocean currents. For example, depending on the season, cold or warm water masses are moved from other areas. The warmest water temperatures in Viken are in August, when the water is 17 °C.
Relative humidity in %
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture can be physically contained in the air. At high humidity, a person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% feels pleasant. With only 67% humidity on average, it is quite dry in June. The highest value of 86% is experienced here in November.
Absolute humidity in g/m³
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy.
Map of Viken

Most important cities in the province »Viken«

Just 3 cities with over 50,000 inhabitants are located here. The province has a west-east extension of about 200 km and over 210 km from north to south.

It consists of the three former provinces Akershus, Buskerud and Østfold.

CityPopulationGeo position
Drammen90,72259° 44' 38"N10° 12' 16"E
Fredrikstad72,76059° 13' 5"N10° 55' 47"E
Sarpsborg52,15959° 17' 2"N11° 6' 35"E
Moss34,49259° 26' 3"N10° 39' 28"E
Halden21,97059° 7' 29"N11° 23' 15"E
Kongsberg17,66759° 40' 7"N9° 39' 1"E
Lillestrøm14,00059° 57' 21"N11° 2' 57"E
Hønefoss13,67860° 10' 5"N10° 15' 23"E
Ski12,51359° 43' 10"N10° 50' 9"E
Askim12,48259° 34' 60"N11° 9' 46"E
Jessheim12,36560° 8' 29"N11° 10' 31"E
Drøbak11,36359° 39' 48"N10° 37' 47"E
Nesoddtangen10,91159° 51' 45"N10° 39' 47"E
Råholt8,59360° 16' 30"N11° 10' 44"E
Ås7,96159° 39' 53"N10° 47' 41"E
Fetsund6,44159° 55' 29"N11° 9' 26"E
Kløfta5,94260° 4' 27"N11° 8' 17"E
Tranby5,55259° 48' 31"N10° 15' 40"E
Mysen5,51659° 33' 13"N11° 19' 33"E
Vestby5,33059° 36' 18"N10° 45' 8"E
Rotnes4,70560° 3' 25"N10° 51' 41"E
Rakkestad3,77959° 25' 30"N11° 20' 43"E
Sørumsand3,56359° 59' 10"N11° 14' 30"E
Skui3,48759° 55' 39"N10° 26' 51"E
Lysaker3,43959° 54' 36"N10° 38' 8"E
Årnes3,28960° 7' 21"N11° 28' 12"E
Flateby3,17559° 49' 46"N11° 9' 12"E
Spydeberg3,16659° 37' 2"N11° 5' 8"E
Tofte3,10959° 32' 34"N10° 33' 41"E
Sætre3,00959° 40' 53"N10° 31' 39"E

Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants:, United Nations Statistics Division and own research.
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