August weather forecastArendal, Norway
August
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. A tinge of autumn begins to creep into the city as the last summer days wind down. As August ends, the cool embrace of upcoming fall can be felt in Arendal’s weather.Temperature
The shift to August signals an average high-temperature of a still comfortable 18.3°C (64.9°F), subtly varied from July's 19.2°C (66.6°F). Arendal upholds a consistent average temperature of 13.3°C (55.9°F) throughout the nights of August.Humidity
In August, the average relative humidity in Arendal, Norway, is 76%.Rainfall
In Arendal, Norway, during August, the rain falls for 12.5 days and regularly aggregates up to 61mm (2.4") of precipitation. In Arendal, during the entire year, the rain falls for 137.7 days and collects up to 744mm (29.29") of precipitation.Snowfall
In Arendal, Norway, snow does not fall in May through September.Sea temperature
The month with the warmest seawater is August, with an average sea temperature of 18.2°C (64.8°F).Note: Most people do not find swimming enjoyable in water of 18.2°C (64.8°F). The task of controlling breathing becomes tougher as the temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in August is 15h and 20min.On the first day of August, sunrise is at 05:16 and sunset at 21:45. On the last day of the month, sunrise is at 06:22 and sunset at 20:27 CEST.
Sunshine
The average sunshine in August in Arendal is 9.8h.UV index
In August, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 4 in August interprets into the following advice:
Take precautions - Protection against sunburn is recommended. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Arendal, Norway
- Average high temperature in August: 18.3°C
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).
- Average low temperature in August: 13.3°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 in August
Arendal, Norway
- Average pressure in August: 1011.6mbar
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 in August
Arendal, Norway
- Average wind speed in August: 15.7km/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 in August
Arendal, Norway
- Average humidity in August: 76%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are May and June (70%).
Average rainfall in August
Arendal, Norway
- Average rainfall in August: 61mm
The wettest month (with the highest rainfall) is November (88mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in August
Arendal, Norway
- Average rainfall days in August: 12.5 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 in August
Arendal, Norway
- Average snowfall in August: 0mm
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 in August
Arendal, Norway
- Average snowfall days in August: 0 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 in August
Arendal, Norway
- Average sea temperature in August: 18.2°C
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 in August /
Average sunshine in August
Arendal, Norway
- Average daylight in August: 15h and 18min
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 August: 9h and 48min
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 in August
Arendal, Norway
- Average sunshine days in August: 16.4 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 in August
Arendal, Norway
- Average UV index in August: 4
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 in August
Arendal, Norway
- Average cloud cover in August: 38
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 in August
Arendal, Norway
- Average visibility in August: 10km
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).





