Saint-Louis in Spring
In spring (March, April and May), Saint-Louis sees average daytime highs around 14°C and overnight lows near 5°C, with 302 mm of precipitation over about 44 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 8°C in early March to 20°C by late May. The sky is clear or mostly clear about 22% of the time across spring, and the air most often feels dry.
Spring is Saint-Louis's 2nd-best season to visit on our travel score. For the whole year in context, see Saint-Louis's year-round climate.
- Avg daytime high
- 14°C
- 2nd-warmest season
- Avg overnight low
- 5°C
- Precipitation
- 302 mm
- 44 wet days
- Avg wind
- 8 km/h
- Travel score
- 3.6
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in Saint-Louis in Spring
Over the season highs climb from about 8°C in early March to 20°C by late May.
A typical spring day in Saint-Louis reaches about 14°C and drops to 5°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Saint-Louis
Once humidity and wind are folded in, spring brings about 0 days that feel above 32°C and 22 that feel at or below 0°C.
The story in spring is cold — wind chill drags the overnight "feels like" below the raw low.
Saint-Louis 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 | 4° / -1° | 80 | 13.5 | 6 | 8.7 | 0.0 |
| Feb | 6° / -1° | 72 | 11.5 | 5.5 | 9.9 | 0.4 |
| Mar | 10° / 2° | 83 | 13.5 | 3.9 | 11.6 | 2.2 |
| Apr | 14° / 5° | 90 | 14.1 | 1.6 | 13.3 | 3.8 |
| May | 18° / 9° | 129 | 16.8 | 0.1 | 14.9 | 4.9 |
| Jun | 22° / 12° | 118 | 15.8 | 0 | 15.7 | 5.7 |
| Jul | 24° / 14° | 121 | 15.4 | 0 | 15.4 | 6.2 |
| Aug | 24° / 14° | 125 | 15.2 | 0 | 14.1 | 6.2 |
| Sep | 19° / 10° | 95 | 12.6 | 0 | 12.4 | 5.7 |
| Oct | 14° / 7° | 97 | 13.2 | 0.3 | 10.6 | 3.8 |
| Nov | 8° / 2° | 94 | 13 | 2.8 | 9.1 | 1.3 |
| Dec | 5° / -0° | 101 | 14.1 | 5.5 | 8.3 | 0.0 |
Cloud cover in Spring
The sky is clear or mostly clear about 22% of the time across spring.
Chance of precipitation in Spring
Saint-Louis gets around 302 mm of rain and snow over 44 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 8 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 10 h 42 min in early March to 15 h 24 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 Saint-Louis?
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 Saint-Louis.
What to pack for Saint-Louis in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Saint-Louis sees daytime highs around 14°C and nights near 5°C. Pack a warm layer and rain gear. Worth having: sun protection. About 44 days see rain.
UV index in Saint-Louis in Spring
Clear-sky midday UV across spring averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Saint-Louis peaks around July 14 at about 8 (very 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 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 7 | 7 | 8 | 6 | 4 | 3 | 2 | 1 |
| Level | Low | Low | Moderate | Moderate | High | Very high | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 7 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Saint-Louis?
Saint-Louis sits at 47.6°N, 7.6°E, 248 m above sea level, in France. The nearest listed city is Basel, 4.0 km away.
Topography around Saint-Louis
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Saint-Louis.
Within 3 km, the terrain around Saint-Louis has only modest variations in elevation — a maximum elevation change of 49 m around an average of 256 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 626 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,427 m.
The land around Saint-Louis is covered by artificial surfaces (46%) within 3 km, trees (43%) and cropland (26%) within 16 km, and trees (54%) and grassland (23%) 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 Saint-Louis (47.5921°, 7.5592°, elevation 248 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.