The climate in Koster during April can be summarized as mild and reasonably dry.
April is in the fall / autumn in Koster and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a comfortable 23°C (74°F), whilst at night 10°C (49°F) is normal.
Daytime temperature | 23.1°C 73.5°F |
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Nightly temperature | 9.6°C 49.2°F |
Average temperature | 16.3°C 61.3°F |
Daily sunshine | 8.8 hrs |
Avg rainfall | 67 mm 2.6 ins |
Rainy days | 7 days |
Sea temperature | 22.8°C 73.1°F |
Humidity | 64% |
Windspeed | 6.5kph 4 mph |
On average April is the 6th wettest month of the year in Koster with around 67mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.8 hours of sunshine per day.
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 Koster in April 2025.
Hottest month: | January | 27.6°C 81.7°F |
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Driest month: | July | 4mm 0.2ins |
Sunniest month: | August | 10.9hrs |
Coldest month: | June | 17.3°C 63.1°F |
Wettest month: | January | 135mm 5.3ins |