Grande-Synthe Weather in April
What's the weather like in Grande-Synthe (Nord-Pas-de-Calais) in April 2026?
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 |
|---|---|
| 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.
April temperatures in Grande-Synthe
April rainfall
April 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 Grande-Synthe in April 2025.
Other monthly averages
Grande-Synthe weather stats
| Hottest month: | August | 20.8°C 69.4°F |
|---|---|---|
| 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 |
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