Last updated: January 18, 2025
Viken, Norway, exhibits a diverse climate characterized by its Köppen-Geiger classifications of Dfc, Dfb, and Cfb. The region experiences a broad temperature range, with chilling lows plummeting to -28°C (-17°F) in November, highlighting the severity of winter. In contrast, summer brings warmth with average temperatures peaking at 6°C (44°F) and soaring to a maximum of 34°C (93°F) in July, illustrating the seasonal variability and potential for extreme weather in this part of Norway.
Viken, Norway experiences pronounced seasonal temperature fluctuations throughout the year. The winter months of January and February see frigid minimums hovering around -25°C to -26°C and average temperatures lingering below freezing, but as March arrives, a gradual warming trend emerges, culminating in a notable maximum of 20°C (68°F) by the month’s end. Spring progresses with April and May showcasing increasing warmth, where daytime highs can reach up to 31°C (89°F) in May, signaling the transition to summer. The summer months of June and July offer the most warmth, with average temperatures around 16°C to 17°C and maximums soaring as high as 34°C (93°F). August maintains this balmy trend before a gradual cooling reintroduces autumn temperatures in September. As the year wanes, November and December bring a return to severe cold, with temperatures often plunging to their yearly lows, reinforcing the stark contrast of Viken’s seasonal climate.
In March, Noresund experiences a minimum temperature of -20°C (-4°F) and can reach a maximum of 29°C (85°F) in July, as detailed in the monthly temperatures in Noresund. Fredrikstad, slightly milder, has a minimum of -16°C (4°F) in February and peaks at 33°C (92°F) in July, according to the monthly temperatures in Fredrikstad. Meanwhile, Hemsedal sees even colder temperatures, with a minimum of -25°C (-13°F) in March and a maximum of 26°C (79°F) in July, as noted in the monthly temperatures in Hemsedal.
Viken, Norway, experiences a distinctive pattern of precipitation throughout the year, with rainfall intensifying during the late summer and autumn months. January and February see moderate precipitation levels of 57 mm (2.2 in) and 60 mm (2.4 in), respectively, while March experiences slightly heavier rainfall at 62 mm (2.4 in). The onset of spring in April marks a decrease to 38 mm (1.5 in), but May rebounds with increased precipitation, reaching 82 mm (3.2 in). The late spring and summer months are particularly wet, with June and July recording 87 mm (3.4 in) and 96 mm (3.8 in) of rain, respectively, peaking in August with 93 mm (3.7 in).
As autumn approaches, precipitation continues to rise, peaking in October with 121 mm (4.7 in), accompanied by an increase in rainy days—typically around 14 days for the month. November and December maintain high precipitation levels at 97 mm (3.8 in) and 98 mm (3.8 in), with an escalation in rainy days, particularly in December, averaging 15 days. This seasonal pattern reflects the region’s transition from moderate winter precipitation to heavy rainfall in autumn, emphasizing Viken's rich hydrological cycle and its impact on the local climate.
In Viken, Norway, sunshine duration exhibits a marked seasonal variation, reflecting the dynamic changes in daylight throughout the year. The darker winter months, represented by January and December, provide only 88 and 92 hours of sunlight, respectively, creating a stark contrast to the longer days that follow. As winter transitions into spring, February and March witness a notable increase in sunlight, with February recording 176 hours and March seeing a substantial jump to 287 hours. This upward trend continues into April and May, where hours of sunshine rise dramatically to 370 hours and 413 hours, respectively, heralding the arrival of longer, brighter days.
The peak sunshine months occur during the summer, with July standing out as the sunniest month at 468 hours. June also offers robust sunshine, boasting 446 hours. However, as summer wanes and autumn sets in, the hours reduce sharply, with August still maintaining 394 hours before a decline to 272 hours in September. The fall months further witness a drop, with October providing 214 hours and November dwindling down to 127 hours, showcasing the region's swift retreat into shorter daylight hours. This pattern illustrates Viken's clear seasonal rhythms, where bright, sun-filled summers contrast significantly with the gloomy, shortened days of winter.
The UV Index in Viken, Norway, showcases notable seasonal shifts, linked to the changing intensity of the sun’s rays throughout the year. During the winter months, from January to February, the UV Index remains low, peaking at 1 and 2, which indicates minimal risk of harm from unprotected sun exposure, allowing for a safe burn time of 45 minutes. As the days lengthen in spring, the UV Index escalates, reaching a moderate 3 in March and climbing to 5 in April. This increase emphasizes the need for heightened awareness of sun safety as outdoor activities increase with the arrival of warmer weather.
Summer months see the UV Index peak, with June and July recording values of 7, categorized as high, and a corresponding burn time of just 25 minutes. August slightly moderates to 6, though it still advises caution for sun exposure. Autumn brings a decrease in UV levels, with September registering a moderate 4, and both October and November dropping back to low levels of 2 and 1, respectively. This annual cycle of UV exposure highlights the importance of sun protection during the brighter months when the risk of skin damage is significantly elevated, while winter months allow for more relaxed sun exposure precautions.
UV Risk Categories
In Viken, Norway, daylight duration reflects dramatic seasonal variations, closely linked to the region's latitude. The year begins with limited daylight, as January sees only 6 hours, and this marginally increases to 9 hours in February. By March, daylight begins to extend more noticeably, reaching 11 hours, and April further enhances this trend with 14 hours of light, signaling the transition toward warmer days and longer evenings.
As summer unfolds, Viken experiences its longest days, peaking in June with an impressive 18 hours of daylight. This abundance of sunlight allows for extended outdoor activities and fosters a vibrant outdoor culture. Following June, daylight gradually wanes, with July still offering 17 hours, but dropping to 15 hours in August. The descent continues into autumn, where September provides 12 hours, followed by a decrease to 10 hours in October. As winter returns, daylight shrinks back to 7 hours in November and returns to 6 hours in December, illustrating the cyclical nature of light exposure in this northern region.
Auli, Norway experiences a diverse climate characterized by cold winters and mild summers. The average temperatures range from a low of -21°C (-5°F) in February to a high of 33°C (91°F) in July, with significant temperature fluctuations throughout the year. Precipitation is notable, especially in summer months, peaking at 95 mm (3.8 in) in July, while sunshine hours are highest in July at 468 hours, tapering off significantly by December. The coldest months see fewer sunshine hours, at just 86 in January. For more detailed insights, visit Auli climate.
Drammen, Norway experiences a diverse climate characterized by cold winters and mild summers. January and February are the coldest months, with average temperatures around -2°C (28°F) and heavy precipitation peaking at 69 mm (2.7 in) in February. As spring approaches in April, temperatures rise significantly, reaching an average of 5°C (42°F) with increased sunshine hours. Summer months are warm and humid, particularly in July, where temperatures can soar up to 32°C (90°F) and precipitation is at its highest, averaging 96 mm (3.8 in). For more detailed information, visit Drammen climate.
Drobak, Norway features a subarctic climate characterized by cold winters and mild summers. January temperatures can plummet to -18°C, warming to a maximum of 9°C. As spring approaches, temperatures rise dramatically, with April averaging around 6°C and summer highs reaching 34°C in July. Precipitation is abundant, peaking in October with 123 mm, while sunshine hours are greatest in the summer months, particularly July, which sees 473 hours of sunlight. For more detailed information, visit Drobak climate.
Eidsvoll, Norway experiences a subarctic climate with cold winters and mild summers. January and February are the coldest months, with average temperatures around -3°C (27°F) and maximums reaching up to 11°C (51°F). Precipitation is relatively consistent throughout the year, peaking in October with 118 mm (4.7 in). Summer months are sunnier, particularly July, which boasts 466 hours of sunshine, while the winter months have significantly less. For more detailed information, visit Eidsvoll climate.
Fredrikstad, Norway experiences a varied climate with cold winters and mild summers. January temperatures can dip to as low as -15°C (5°F), while July sees average highs around 18°C (65°F) and can reach up to 33°C (92°F). Precipitation is relatively consistent throughout the year, peaking in October with 117 mm (4.6 in), while sunshine hours increase from just 91 in January to a maximum of 475 in July. This diverse weather pattern creates distinct seasonal changes, making Fredrikstad an intriguing location for climate enthusiasts. For more detailed information, visit Fredrikstad climate.
The climate in Frogner, Norway, exhibits a continental pattern with cold winters and mild summers. January and February see temperatures plummet to lows around -20°C (-4°F), while July enjoys milder conditions with highs reaching up to 32°C (91°F). Precipitation is fairly consistent throughout the year, peaking in October at 118 mm (4.6 in) and July with 99 mm (3.9 in). Sunshine is ample during the summer months, with July basking in 466 hours of sunlight, whereas December sees a significant drop to just 93 hours. For more details, visit Frogner climate.
Geilo, Norway experiences a polar climate characterized by cold winters and mild summers. January and February are the coldest months, with average temperatures hovering around -6°C (22°F) and significant snowfall, contributing to monthly precipitation of around 60-68 mm. As spring approaches, temperatures gradually rise, peaking in summer months like July when averages reach 12°C (54°F) and maximums can hit 26°C (79°F). The area receives ample sunshine during summer, with July garnering up to 457 hours. For more in-depth insights, visit Geilo climate.
Gol, Norway experiences a typical cold climate with significant temperature variations throughout the year. Winter months, particularly December and January, witness harsh conditions with minimum temperatures dropping as low as -26°C (-14°F), while summers are mild with average highs around 14°C to 28°C (57°F to 82°F) in July. Precipitation is more pronounced in the summer, peaking in July and August with about 115 mm (4.5 in) of rainfall, while winter months see around 48-55 mm (1.9-2.2 in). Sunshine hours are maximized during the summer, reaching up to 465 hours in July, contrasting sharply with only 70 hours in December. For more detailed information, visit Gol climate.
Hemsedal, Norway experiences a diverse climate with cold winters and mild summers. January temperatures can drop to as low as -25°C (-12°F), while July sees milder weather averaging around 12°C (55°F). Precipitation peaks in August with 115 mm (4.5 in), contributing to lush landscapes during the summer months. Sunshine varies significantly, with June receiving the most at 422 hours, compared to a mere 58 hours in December. For more detailed information, visit Hemsedal climate.
Nesbyen, Norway experiences a subarctic climate characterized by cold winters and mild summers. January temperatures can drop as low as -27°C (-16°F), with average highs around -6°C (21°F), while July's warmth peaks near 27°C (81°F). Precipitation varies throughout the year, with June and August receiving the most rainfall at about 108 mm (4.3 in) each. Sunshine hours are notably high in summer, with July enjoying 462 hours of sunlight, compared to just 76 hours in December. For more detailed information, visit Nesbyen climate.
Noresund, Norway, experiences a diverse climate with cold winters and mild summers. January and February are characterized by minimum temperatures around -20°C (-4°F) and significant precipitation, peaking in March with 71 mm (2.8 in). As spring arrives in April, temperatures rise to an average of 3°C (37°F), leading into warmer months with averages reaching 15°C (60°F) in July. The region enjoys extended daylight in summer, with July boasting 461 hours of sunshine. For more detailed insights, visit Noresund climate.
The climate in Sandvika, Norway, experiences significant seasonal variation, with cold winters and mild summers. January and February are characterized by minimum temperatures as low as -21°C (-5°F) and average temperatures hovering around -3°C (27°F). Summer months from June to August see average highs of 17°C (63°F) to 31°C (88°F), accompanied by considerable rainfall, particularly in July and August which both receive around 100 mm (4.0 in) of precipitation. Sunlight is most abundant in the summer, peaking at 461 hours in July, while winter months like January receive only 90 hours. For more details, visit Sandvika climate.
Sarpsborg, Norway experiences a temperate climate with distinct seasonal variations. Winters are cold, with January temperatures ranging from -15°C to 11°C, while summers can be quite warm, peaking in July at up to 33°C. Precipitation is moderately high, with October receiving the most rainfall at 117 mm, while July typically sees the peak sunshine hours at 475 hours. Overall, the region enjoys a relatively balanced distribution of sunshine and precipitation throughout the year. For more detailed climate information, visit Sarpsborg climate.
Ski, Norway experiences a diverse climate characterized by cold winters and mild summers. January and February are the coldest months with average temperatures around -2°C (30°F) and significant snowfall, while July peaks at a warm average of 18°C (65°F). Precipitation levels vary throughout the year, with the highest in late summer and autumn, particularly in September and October. Sunshine hours increase from winter to summer, reaching a maximum of 473 hours in July. For more detailed information about the climate, visit Ski climate.
Tofte, Norway experiences a diverse climate characterized by cold winters and mild summers. January and February are particularly chilly, with average temperatures around -1°C (31°F) and significant snowfall. As spring approaches, temperatures gradually increase, reaching averages of 6°C (44°F) in April and 12°C (53°F) in May. Summer peaks in July, where average temperatures can hit 18°C (65°F), accompanied by the year's highest precipitation levels. For more detailed information, visit Tofte climate.
Vestby, Norway experiences a diverse climate, characterized by cold winters and mild summers. January and February are the coldest months, with average temperatures around 0°C (32°F) and maximums peaking at 12°C (53°F). By mid-year, temperatures rise significantly, with July showcasing average highs of 19°C (66°F) and maximums reaching up to 34°C (93°F). Precipitation varies throughout the year, with September being the wettest month at 99 mm (3.9 in), while sunshine hours peak in July at 473 hours. More detailed information can be found at Vestby climate.
Vik, Norway experiences a diverse climate throughout the year, with harsh winters and mild summers. January temperatures can drop to -21°C (-5°F), gradually warming up to a maximum of 30°C (87°F) in July. Precipitation is highest in late summer and early autumn, with August and September averaging around 96 mm (3.8 in) and 102 mm (4.0 in) respectively. The region enjoys ample sunshine in the summer months, peaking at 461 hours in July, while winter months like January see only 90 hours. For more detailed information, visit Vik climate.
Vikersund, Norway experiences a diverse climate characterized by cold winters and mild summers. January and February see the coldest temperatures, with averages around -4°C (25°F) and significant precipitation, peaking in September with 105 mm (4.1 in). The months from May to July are the warmest, featuring average highs between 17°C (63°F) and 30°C (86°F) and ample sunshine, especially in July with 456 hours. This region also enjoys a steady increase in daylight hours from winter to summer. For more detailed information, visit Vikersund climate.
In summary, Viken, Norway, presents a fascinating interplay of climate, precipitation, sunshine duration, UV Index, and daylight hours throughout the year. The region experiences significant seasonal variations, from the harsh cold and limited daylight of winter to the vibrant warmth and extended daylight of summer. These characteristics highlight the distinct rhythms of Viken's climate, influencing not only the local environment but also outdoor activities, health considerations related to sun exposure, and the overall lifestyle of its inhabitants. Understanding these patterns is essential for residents and visitors alike, ensuring that appropriate precautions and plans are taken to fully appreciate and enjoy all that Viken has to offer across its diverse seasons.