Climate and monthly weather forecastArendal, Norway
Climate and monthly weather forecast
The climate of Arendal
Arendal, Norway, situated on the southeastern coastline, experiences a Marine West Coast climate or Cfb according to the Köppen Climate Classification. These climatic conditions are largely characterized by mild, moderate weather patterns throughout the year. Within the course of a typical year, temperature fluctuations are relatively minimal, with the warmest month seldom exceeding 19.2°C (66.6°F), while minimum temperatures rarely fall below -1.5°C (29.3°F).Throughout the year, rainfall registers a steady pattern, with the driest periods occurring from April to June, and the heaviest precipitation periods between October and January. The precipitation levels oscillate between a minimum of 29mm (1.14") to a maximum of 88mm (3.46"). In line with the prevalent climatic conditions, snowfall is a common phenomenon, especially during the winter months from December to February, with the highest snowfall figures of 130mm (5.12") being registered in January.
A noteworthy feature of Arendal's climate is its relative humidity, which remains consistently high throughout the year. Figures range from 70% during the warmer months to as high as 86% in February. The average sunshine hours are markedly season-dependent, with the longest daylight periods in June amounting to 18.2 hours, declining substantially to a low of 6.5 hours in December.
The best time to visit Arendal
A desirable period for tourism in Arendal appears to coincide with the warmer months from May to August. During this time, the weather is mild and conducive for outdoor activities, with average temperatures ranging from 12.9°C (55.2°F) to 19.2°C (66.6°F). An added benefit lies in extended daylight hours, reaching up to 18.2 hours in June, promoting prolonged exploration opportunities.The worst time to visit Arendal
Travel to Arendal might prove challenging during the colder months, particularly from December to February. During this period, average temperatures plunge to lows of -1.5°C (29.3°F), and the region experiences the highest snowfall, peaking at 130mm (5.12") in January. Additionally, daylight hours are markedly shorter, dropping to as low as 6.5 hours in December.Spring weather in Arendal
Spring weather in Arendal witnesses a gradual increase in temperature with averages ranging from 4.1°C (39.4°F) in March to 12.9°C (55.2°F) by May. The amount of rainfall is initially high in March with 55mm (2.17") but then tapers off to 29mm (1.14") and 40mm (1.57") in April and May respectively. The city also enjoys increased daylight hours, varying from 11.9 hours in March to 16.8 hours at the end of spring in May.Summer weather in Arendal
Arendal's summer kicks off in June with an average temperature of 17°C (62.6°F), peaking at 19.2°C (66.6°F) in July before subsiding slightly to 18.3°C (64.9°F) in August. Concurrently, levels of rainfall exhibit a steady rise, increasing from 53mm (2.09") in June to 61mm (2.4") by August. This period also corresponds with the maximum daylight time, averaging between 17.5 and 18.2 hours.Autumn weather in Arendal
During autumn, Arendal experiences a downward trend in temperature, from an average high of 15.2°C (59.4°F) in September to 6.4°C (43.5°F) in November. Rainfall also escalates during this time, peaking at 88mm (3.46") in November. Overall, daylight hours start reducing from 12.8 hours in September to 7.9 hours by November.Winter weather in Arendal
Characterised by low temperatures and high snowfall levels, winter in Arendal is quite harsh. The mean temperatures oscillate between 3.6°C (38.5°F) and -1.1°C (30°F). Snowfall is particularly prevalent in these months, peaking at 130mm (5.12") in January. The region also registers the shortest daylight hours of the year, ranging from just 6.5 to 7.2 hours from December to February.Weather in January
The beginning of the year in Arendal, Norway, manifests as a winter wonderland. The chill in the air becomes profound as January marks the coldest month of the year with the lowest average temperature of -1.1°C (30°F). As a visitor to the city, prepare for frequent snowfall, as residents clear the winter white from their walkways. Weather in January »Weather in February
The transition from January to February brings a slight reprive from the colder temperatures, but the weather remains firmly wintry. Snowfall continues albeit less frequent and intense than the previous month. Locals and visitors alike may enjoy the longer daylight hours compared to January. Weather in February »Weather in March
March in Arendal signals the clear departure from winter's hibernation. A noticeable increase in average temperatures is experienced, reaching up to 4.1°C (39.4°F). As winter retreats, snowfall minimizes significantly while daylight slowly takes over. Weather in March »Weather in April
April in Arendal is marked by the delightful arrival of spring. It brings a welcoming rise in temperature, melting the last remnants of winter's snow. The appreciable increase in daylight hours signals longer days and shorter nights. Weather in April »Weather in May
The gradual transition into a warmer season continues into May in Arendal. In May, locals enjoy the most daylight hours, creating an extended day of activities. The weather becomes more suitable for outdoor pursuits due to the significantly warmer temperatures. Weather in May »Weather in June
June marks the welcome arrival of summer in Arendal. The city experiences the warmest temperatures of the year, indicating the peak of the season. With an increased sea temperature, it is ideal for water-based activities. The perfect time for appreciating Arendal’s coast and ocean views. Weather in June »Weather in July
Mid-summer rolls into Arendal with July, maintaining the summer high temperatures. The city experiences the year's highest sea temperatures, contributing to the prevalence of water activities. Long, sunny days and reduced relative humidity make for pleasant afternoons outdoors. Weather in July »Weather in August
August in Arendal brings the last full month of summer, marked by steadily declining temperatures from peak July warmth. By mid-August, locals start preparing to wave summer goodbye. Though summer's end is near, the weather is still pleasantly warm and conducive to outdoor activities. Weather in August »Weather in September
September signifies the arrival of fall in Arendal. Locals notice a drop in average temperatures to 15.2°C (59.4°F). As the leaves begin to change, the landscapes of the city display a riot of colors. With shorter days and longer nights, September ushers in the start of the harvest season. Weather in September »Weather in October
As October arrives in Arendal, the city fully embraces the autumnal flushing of colors. The rain becomes more present compared to the drier summer months. Residents begin to brace for the chill that reinstates itself in the city's climate. Weather in October »Weather in November
November in Arendal signifies the advent of winter. The city experiences its first snowfall since spring, covering arendal in a winter veil. The daylight dwindles substantially as the city plunges into longer wintery nights. Residents start preparing for the holiday season, with the cold weather making warm indoor festivities all the more appealing. Weather in November »Weather in December
Arendal, in December, wraps into the depths of the winter season; with average temperatures dropping to 3.6°C (38.5°F). The city experiences the year's shortest daylight hours, something the residents have come to anticipate. Weather in December »Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, in Arendal, Norway, there are 137.7 rainfall days, and 744mm (29.29") of precipitation is accumulated.
January through April, October through December are months with snowfall.
January is the month with the most snowfall in Arendal. Snow falls for 8.8 days and accumulates 130mm (5.12") of snow.
Throughout the year, in Arendal, there are 32.5 snowfall days, and 408mm (16.06") of snow is accumulated.
January and December, with an average of 3.2h of sunshine, are months with the least sunshine in Arendal.
With an average maximum UV index of 1, January is the month with the lowest UV index in Arendal, Norway.
The coldest temperatures occur during February, when averages reach a peak of 1.3°C (34.3°F) and a low of -1.5°C (29.3°F).
February is the most humid month in Arendal, with an average relative humidity of 86%.
The month with the coldest seawater is March, with an average sea temperature of 3.4°C (38.1°F).
The month with the least rainfall is April, when the rain falls for 9.4 days and typically collects 29mm (1.14") of precipitation.
The months with the lowest humidity in Arendal, Norway, are May and June, with an average relative humidity of 70%.
May through September are months without snowfall in Arendal.
June has the longest days of the year in Arendal, Norway, with an average of 18h and 12min of daylight.
June has the most sunshine of the year in Arendal, Norway, with an average of 11.4h of sunshine.
July proves to be the warmest month, recording an average peak temperature of 19.2°C (66.6°F) and a minimum temperature of 13.6°C (56.5°F).
The month with the highest UV index is July, with an average maximum UV index of 5.
August is the month with the warmest seawater, with an average sea temperature of 18.2°C (64.8°F).
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends in Arendal, Norway, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
The month with the most rainfall in Arendal, Norway, is November, when the rain falls for 15.5 days and typically aggregates up to 88mm (3.46") of precipitation.
With an average of 6h and 30min of daylight, December has the shortest days of the year in Arendal.
Average temperature
Arendal, Norway
The warmest month (with the highest average high temperature) is July (19.2°C).
The month with the lowest average high temperature is February (1.3°C).
The month with the highest average low temperature is July (13.6°C).
The coldest month (with the lowest average low temperature) is February (-1.5°C).
Average pressure
Arendal, Norway
- Average pressure in January:
1010.5mbar - Average pressure in February:
1010.8mbar - Average pressure in March:
1012.3mbar - Average pressure in April:
1014.6mbar - Average pressure in May:
1014.5mbar - Average pressure in June:
1012.7mbar
- Average pressure in July:
1011.1mbar - Average pressure in August:
1011.6mbar - Average pressure in September:
1012.9mbar - Average pressure in October:
1013.3mbar - Average pressure in November:
1009.4mbar - Average pressure in December:
1007.8mbar
The month with the highest atmospheric pressure is April (1014.6mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed
Arendal, Norway
- Average wind speed in January:
20.9km/h - Average wind speed in February:
19.2km/h - Average wind speed in March:
18km/h - Average wind speed in April:
16.3km/h - Average wind speed in May:
16.1km/h - Average wind speed in June:
15.5km/h
- Average wind speed in July:
15.9km/h - Average wind speed in August:
15.7km/h - Average wind speed in September:
18.3km/h - Average wind speed in October:
19.7km/h - Average wind speed in November:
21.1km/h - Average wind speed in December:
20.7km/h
The windiest month (with the highest average wind speed) is November (21.1km/h).
The calmest month (with the lowest average wind speed) is June (15.5km/h).
Average humidity
Arendal, Norway
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are May and June (70%).
Average rainfall
Arendal, Norway
The wettest month (with the highest rainfall) is November (88mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days
Arendal, Norway
- Average rainfall days in January:
8.8 days - Average rainfall days in February:
8 days - Average rainfall days in March:
10 days - Average rainfall days in April:
9.4 days - Average rainfall days in May:
10.8 days - Average rainfall days in June:
10.5 days
- Average rainfall days in July:
12.3 days - Average rainfall days in August:
12.5 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
15.3 days - Average rainfall days in November:
15.5 days - Average rainfall days in December:
12 days
The month with the highest number of rainy days is November (15.5 days).
The month with the least rainy days is February (8 days).
Average snowfall
Arendal, Norway
The month with the highest snowfall is January (130mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days
Arendal, Norway
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
5.7 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.4 days - Average snowfall days in November:
3.1 days - Average snowfall days in December:
5.4 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature
Arendal, Norway
The best month for swimming (with the highest average sea temperature) is August (18.2°C).
The coldest month (with the lowest average sea temperature) is March (3.4°C).
Average daylight / Average sunshine
Arendal, Norway
- Average daylight in January:
7h and 12min - Average daylight in February:
9h and 24min - Average daylight in March:
11h and 54min - Average daylight in April:
14h and 30min - Average daylight in May:
16h and 48min - Average daylight in June:
18h and 12min
- Average daylight in July:
17h and 30min - Average daylight in August:
15h and 18min - Average daylight in September:
12h and 48min - Average daylight in October:
10h and 12min - Average daylight in November:
7h and 54min - Average daylight in December:
6h and 30min
The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in January:
3h and 12min - Average sunshine in February:
3h and 42min - Average sunshine in March:
5h and 48min - Average sunshine in April:
8h and 42min - Average sunshine in May:
9h and 48min - Average sunshine in June:
11h and 24min
- Average sunshine in July:
11h and 12min - Average sunshine in August:
9h and 48min - Average sunshine in September:
7h and 48min - Average sunshine in October:
4h and 18min - Average sunshine in November:
3h and 36min - Average sunshine in December:
3h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 12min).
Average sunshine days
Arendal, Norway
- Average sunshine days in January:
12.1 days - Average sunshine days in February:
12 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
19 days - Average sunshine days in May:
18.9 days - Average sunshine days in June:
18.3 days
- Average sunshine days in July:
17.2 days - Average sunshine days in August:
16.4 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
13.3 days - Average sunshine days in November:
10.8 days - Average sunshine days in December:
13.1 days
The month with the most sunshine days is April (19 days).
The month with the least sunshine days is November (10.8 days).
Average UV index
Arendal, Norway
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Arendal, Norway
The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility
Arendal, Norway
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
