Boulogne-sur-Mer weather in April
Temperature, sea and sunshine in April: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in April
Poor
Best time to visit: July – August
What is the weather like in Boulogne-sur-Mer in April?
In April, Boulogne-sur-Mer is cool: daytime highs average 13 °C, and nights cool down to about 6 °C. The sea averages 9.4 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 48 mm in total. All in all, April is not an ideal month for a holiday in Boulogne-sur-Mer.
April compared
How the weather changes from March to May. Tap a month to open it.
More details for April
- Daylight
- 13 h 45 min07:01 – 20:46
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 60 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Paris
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %55 %
- Few rainy daysweight 20 %55 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in April
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Boulogne-sur-Mer in April: quick answers
Is Boulogne-sur-Mer hot in April?
No. In April, Boulogne-sur-Mer is cool: daytime highs average 13 °C and nights drop to about 6 °C.
Can you swim in Boulogne-sur-Mer in April?
Only if you don't mind cold water: in April the sea averages just 9.4 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Boulogne-sur-Mer in April?
Rain is frequent, with about 10 rainy days and 48 mm in total.
Boulogne-sur-Mer month by month
The whole year in Boulogne-sur-MerAll destinations: FranceWhere to go in AprilSea temperature in April
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences