Calais in Spring
In spring (March, April and May), Calais sees average daytime highs around 11°C and overnight lows near 8°C, with 147 mm of precipitation over about 30 wet days across the season. It is the 3rd-warmest season and the driest season of the year.
Over the season highs climb from about 8°C in early March to 15°C by late May. The sky is clear or mostly clear about 24% of the time across spring, and the air most often feels dry.
Spring is Calais's 3rd-best season to visit on our travel score. For the whole year in context, see Calais's year-round climate.
- Avg daytime high
- 11°C
- 3rd-warmest season
- Avg overnight low
- 8°C
- Precipitation
- 147 mm
- 30 wet days
- Avg wind
- 22 km/h
- Travel score
- 2.8
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Calais in Spring
Over the season highs climb from about 8°C in early March to 15°C by late May.
A typical spring day in Calais reaches about 11°C and drops to 8°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Calais
Once humidity and wind are folded in, spring brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
spring sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Calais weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 8° / 5° | 79 | 14.3 | 0.8 | 8.2 | 1.0 |
| Feb | 7° / 5° | 60 | 11.4 | 1 | 9.7 | 1.0 |
| Mar | 9° / 6° | 51 | 10.5 | 0.5 | 11.5 | 1.7 |
| Apr | 11° / 8° | 45 | 9.3 | 0 | 13.5 | 2.7 |
| May | 14° / 10° | 51 | 9.8 | 0 | 15.3 | 3.9 |
| Jun | 16° / 13° | 49 | 8.7 | 0 | 16.2 | 5.2 |
| Jul | 19° / 15° | 51 | 9.6 | 0 | 15.8 | 6.1 |
| Aug | 19° / 16° | 65 | 10 | 0 | 14.3 | 6.2 |
| Sep | 18° / 14° | 68 | 11.2 | 0 | 12.4 | 5.5 |
| Oct | 15° / 12° | 96 | 14.3 | 0 | 10.4 | 3.9 |
| Nov | 11° / 8° | 101 | 16.4 | 0.2 | 8.7 | 2.3 |
| Dec | 9° / 6° | 94 | 15 | 0.7 | 7.8 | 1.4 |
Cloud cover in Spring
The sky is clear or mostly clear about 24% of the time across spring.
Chance of precipitation in Spring
Calais gets around 147 mm of rain and snow over 30 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 22 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 10 h 30 min in early March to 15 h 54 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 4.3 kWh/m².
Is spring a good time to visit Calais?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a weaker month for outdoor sightseeing in Calais.
What to pack for Calais in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Calais sees daytime highs around 11°C and nights near 8°C. Pack a warm layer. Worth having: rain gear, sun protection and a windbreaker. About 30 days see rain.
Sea temperature near Calais in Spring
The nearest coast averages about 9°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 18 km away) is warmest in August at about 18°C and coldest in March near 8°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 9 | 8 | 8 | 9 | 11 | 14 | 16 | 18 | 17 | 16 | 13 | 11 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 9 | Bracing |
| Feb | 8 | Bracing |
| Mar | 8 | Bracing |
| Apr | 9 | Bracing |
| May | 11 | Bracing |
| Jun | 14 | Bracing |
| Jul | 16 | Cool |
| Aug | 18 | Cool |
| Sep | 17 | Cool |
| Oct | 16 | Cool |
| Nov | 13 | Bracing |
| Dec | 11 | Bracing |
UV index in Calais in Spring
Clear-sky midday UV across spring averages around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Calais peaks around June 22 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 4 | 6 | 7 | 6 | 7 | 4 | 2 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 4 | Moderate |
| May | 6 | High |
| Jun | 7 | High |
| Jul | 6 | High |
| Aug | 7 | High |
| Sep | 4 | Moderate |
| Oct | 2 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Calais?
Calais sits at 51.0°N, 1.9°E, 6 m above sea level, in France. The nearest listed city is Boulogne-sur-Mer, 30 km away.
Topography around Calais
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Calais.
Within 3 km, the terrain around Calais has only modest variations in elevation — a maximum elevation change of 20 m around an average of 3 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 250 m; within 80 km, significant variations in elevation — a maximum elevation change of 290 m.
The land around Calais is covered by artificial surfaces (48%) and grassland (23%) within 3 km, water (45%) and cropland (30%) within 16 km, and water (47%) and cropland (30%) within 80 km.
France travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 77% of US
- price level, 2025
- GDP per capita
- $48,986
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.3
- per 100k, 2023
- Road deaths
- 5.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 539
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Calais (50.9519°, 1.8563°, elevation 6 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.