The climate in Grande-Synthe during April can be summarized as cool and reasonably dry.
April is in the spring in Grande-Synthe and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cool 12°C (53°F), whilst at night 5°C (40°F) is normal.
Daytime temperature | 11.9°C 53.4°F |
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Nightly temperature | 4.5°C 40.2°F |
Average temperature | 8.2°C 46.8°F |
Daily sunshine | 6 hrs |
Avg rainfall | 45 mm 1.8 ins |
Rainy days | 16 days |
Sea temperature | 8.6°C 47.4°F |
Humidity | 79% |
Windspeed | 19.3kph 12 mph |
On average April is the 2nd driest month of the year in Grande-Synthe with around 45mm 1.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 6 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 Grande-Synthe in April 2025.
Hottest month: | August | 20.8°C 69.4°F |
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Driest month: | February | 39mm 1.5ins |
Sunniest month: | August | 7.8hrs |
Coldest month: | January | 5.9°C 42.6°F |
Wettest month: | November | 81mm 3.2ins |