August weather forecastOslo, Norway

August
Weather in August
Even though August signals the end of summer, the weather maintains a relatively high average of 20.1°C (68.2°F). The retreat of summer ushers in a slightly cooler but still comfortable atmosphere. Nature lovers often seize this month to explore Oslo's scenic hiking trails, taking advantage of the reduced crowds. August provides yet another opportune moment to delve into the multitude of audacious festivals hosted by the city.Temperature
Stepping into August, Oslo records an average high-temperature of a still agreeable 20.1°C (68.2°F), almost consistent with July. Oslo, in August, observes a steady average low-temperature of 11.3°C (52.3°F).Rainfall
In Oslo, in August, during 8 rainfall days, 89mm (3.5") of precipitation is typically accumulated. In Oslo, during the entire year, the rain falls for 77 days and collects up to 763mm (30.04") of precipitation.Sea temperature
The month with the warmest seawater in Oslo is August, with an average sea temperature of 17.9°C (64.2°F).Note: Most people do not enjoy swimming in water of 17.9°C (64.2°F). Breathing control becomes harder as the temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
In August, the average length of the day is 15h and 33min.On the first day of August in Oslo, Norway, sunrise is at 04:59 and sunset at 21:46. On the last day of the month, sunrise is at 06:11 and sunset at 20:23 CEST.
Sunshine
In Oslo, the average sunshine in August is 7h.UV index
In Oslo, Norway, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In August, the maximum UV index of 4 suggests this advice:
Guard yourself - Avoiding sunburn is suggested. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Oslo, Norway
- Average high temperature in August: 20.1°C
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-1.8°C).
- Average low temperature in August: 11.3°C
The month with the highest average low temperature is July (12.2°C).
The coldest months (with the lowest average low temperature) are January and February (-6.8°C).
Average rainfall in August
Oslo, Norway
- Average rainfall in August: 89mm
The wettest month (with the highest rainfall) is September (90mm).
The driest month (with the least rainfall) is February (36mm).
Average rainfall days in August
Oslo, Norway
- Average rainfall days in August: 8 days
The months with the highest number of rainy days are August, October and November (8 days).
The month with the least rainy days is February (4 days).
Average sea temperature in August
Oslo, Norway
- Average sea temperature in August: 17.9°C
The best month for swimming (with the highest average sea temperature) is August (17.9°C).
The coldest month (with the lowest average sea temperature) is March (3°C).
Average daylight in August /
Average sunshine in August
Oslo, Norway
- Average daylight in August: 15h and 36min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in August: 7h and 0min
The month with the most sunshine is June (Average sunshine: 8h and 18min).
The month with the least sunshine is December (Average sunshine: 1h and 6min).
Average UV index in August
Oslo, Norway
- Average UV index in August: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 0).





