Calais Climate by Month
Calais, Hauts-de-France, France
Mild summers and cool winters, with rain spread through the year.
The climate in Calais is one of mild summers and cool winters, with rain spread through the year. Afternoon highs range from 46°F (8°C) in January to 71°F (22°C) in August, and February nights average 37°F (3°C). It gets 24 in (620 mm) of rain a year, spread across the months. The air is humid, averaging 80% relative humidity.
- Warmest month
- 71°F(22°C)
- Average high, August
- Coldest nights
- 37°F(3°C)
- Average low, February
- Rain per year
- 24 in(620 mm)
- No clear rainy season
- Humidity
- 80%
- Sunniest: June
Best and worst months in Calais
Best for weatherThe most comfortable weather comes in July and August, with highs around 71°F (21°C) and about 2.0 in (52 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 46°F (8°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Calais weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 46°F(8°C) | 38°F(3°C) | 2.1 in(54 mm) | 89% | 0.8 |
| FebFebruary | 46°F(8°C) | 37°F(3°C) | 1.8 in(46 mm) | 78% | 1.4 |
| MarMarch | 51°F(11°C) | 41°F(5°C) | 1.4 in(36 mm) | 76% | 2.6 |
| AprApril | 56°F(14°C) | 44°F(7°C) | 1.3 in(34 mm) | 73% | 4.2 |
| MayMay | 62°F(17°C) | 49°F(10°C) | 1.5 in(38 mm) | 80% | 4.9 |
| JunJune | 66°F(19°C) | 54°F(12°C) | 1.6 in(40 mm) | 79% | 5.3 |
| JulJulyBest | 70°F(21°C) | 59°F(15°C) | 1.9 in(47 mm) | 78% | 5.2 |
| AugAugustBest | 71°F(22°C) | 59°F(15°C) | 2.2 in(57 mm) | 75% | 4.4 |
| SepSeptember | 67°F(19°C) | 55°F(13°C) | 2.1 in(54 mm) | 76% | 3.2 |
| OctOctober | 60°F(16°C) | 50°F(10°C) | 2.8 in(72 mm) | 81% | 1.8 |
| NovNovember | 52°F(11°C) | 44°F(7°C) | 3.1 in(79 mm) | 87% | 0.9 |
| DecDecember | 47°F(8°C) | 40°F(4°C) | 2.5 in(63 mm) | 84% | 0.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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