Rjukan Weather in August
What's the weather like in Rjukan (Telemark county) in August 2025?
The climate in Rjukan during August can be summarized as cool and a little damp.
August is in the summer in Rjukan and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cool 13°C (55°F), whilst at night 5°C (41°F) is normal.
| Daytime temperature | 12.8°C 55°F |
|---|---|
| Nightly temperature | 5.1°C 41.1°F |
| Average temperature | 8.9°C 48°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 84 mm 3.3 ins |
| Rainy days | 15 days |
| Sea temperature | 17°C 62.5°F |
| Humidity | 77% |
| Windspeed | 16.2kph 10 mph |
On average August is the 2nd wettest month of the year in Rjukan with around 84mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
August temperatures in Rjukan
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Rjukan in August 2025.
Other monthly averages
Best places to visit in August
Rjukan weather stats
| Hottest month: | July | 13.3°C 55.9°F |
|---|---|---|
| Driest month: | April | 31mm 1.2ins |
| Sunniest month: | June | 9hrs |
| Coldest month: | January | -6.8°C 19.8°F |
| Wettest month: | July | 87mm 3.4ins |
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