Climate averages 1991–2020
Calais weather
in April.
A cool, moderately wet month: the 7th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in Calais: daytime highs average 12.7°C and nights cool to about 6.6°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 45 mm of rain on roughly 9 days, which makes April a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 47 min on an average April day.
The nearest other city in this atlas is Dunkirk (38 km away). In April its highs average 13.5°C, 0.8°C warmer than Calais, with 48 mm of rain.
Among the 57 cities listed in France, Calais ranks 56th of 57 for the warmest April highs and 1st of 57 for the driest April (rainfall, lowest first). The mean April high of those 57 cities is 15.4°C; Calais is 2.7°C cooler than that mean.
From April to May, average highs rise by 3.0°C to 15.6°C, and monthly rainfall rises from 45 mm to 51 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Calais climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.2°C3.4°C | 3.4°C | 79 | 14.3 | 8.58 h |
| February | 7.6°C3.3°C | 3.3°C | 60 | 11.5 | 10.010 h |
| March | 9.9°C4.7°C | 4.7°C | 51 | 10.5 | 11.812 h |
| April, selected | 12.7°C6.6°C | 6.6°C | 45 | 9.3 | 13.814 h |
| May | 15.6°C9.6°C | 9.6°C | 51 | 9.8 | 15.516 h |
| June | 18.3°C12.4°C | 12.4°C | 49 | 8.7 | 16.416 h |
| July | 20.5°C14.8°C | 14.8°C | 51 | 9.6 | 16.016 h |
| August | 20.8°C15.2°C | 15.2°C | 65 | 10.0 | 14.615 h |
| September | 18.4°C13.2°C | 13.2°C | 68 | 11.2 | 12.713 h |
| October | 14.9°C10.3°C | 10.3°C | 96 | 14.3 | 10.811 h |
| November | 10.7°C6.9°C | 6.9°C | 101 | 16.4 | 9.09 h |
| December | 7.8°C4.3°C | 4.3°C | 94 | 15.0 | 8.08 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Dunkirk in AprilFrance · 38 kmHigh 13.5°C · Low 6.2°C · 48 mm rain
- Saint Peters in AprilUnited Kingdom · 55 kmHigh 11.7°C · Low 6.8°C · 42 mm rain
- Hastings, United Kingdom in AprilUnited Kingdom · 90 kmHigh 12.1°C · Low 6.4°C · 45 mm rain
- Lille in AprilFrance · 91 kmHigh 14.3°C · Low 5.3°C · 48 mm rain
- Roubaix in AprilFrance · 97 kmHigh 14.2°C · Low 5.3°C · 47 mm rain
- Brugge in AprilBelgium · 100 kmHigh 13.0°C · Low 6.3°C · 44 mm rain
- Kortrijk in AprilBelgium · 100 kmHigh 14.2°C · Low 5.6°C · 47 mm rain
- Maidstone in AprilUnited Kingdom · 100 kmHigh 13.3°C · Low 5.8°C · 51 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Calais) is explained once on the Calais year overview and on the Sources, method and limits page.