Saint-Louis in Spring
In spring (March, April and May), Saint-Louis sees average daytime highs around 25°C and overnight lows near 20°C, with 0 mm of rain over about 0 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across spring, daytime highs hold fairly steady around 25°C. The sky is clear or mostly clear about 75% of the time across spring, and the air most often feels humid.
Spring is Saint-Louis's best season of the year to visit on our travel score. For the whole year in context, see Saint-Louis's year-round climate.
- Avg daytime high
- 25°C
- coldest season of the year
- Avg overnight low
- 20°C
- Rainfall
- 0 mm
- 0 wet days
- Avg wind
- 23 km/h
- Travel score
- 9.1
- best season of the year
- Months
- Mar · Apr · May
Temperature in Saint-Louis in Spring
Across spring, daytime highs hold fairly steady around 25°C.
A typical spring day in Saint-Louis reaches about 25°C and drops to 20°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 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.
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 | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 25° / 19° | 3 | 0.2 | 11.2 | 8.7 |
| Feb | 25° / 19° | 1 | 0.2 | 11.5 | 8.8 |
| Mar | 25° / 20° | 0 | 0 | 11.9 | 9.1 |
| Apr | 25° / 20° | 0 | 0 | 12.3 | 9.2 |
| May | 25° / 21° | 0 | 0 | 12.7 | 9.1 |
| Jun | 27° / 23° | 1 | 0.3 | 12.9 | 8.7 |
| Jul | 28° / 25° | 11 | 2 | 12.9 | 7.6 |
| Aug | 29° / 26° | 57 | 7.8 | 12.5 | 5.9 |
| Sep | 30° / 27° | 52 | 7.2 | 12.1 | 5.6 |
| Oct | 30° / 26° | 13 | 2.1 | 11.6 | 6.1 |
| Nov | 29° / 24° | 0 | 0.1 | 11.3 | 6.8 |
| Dec | 27° / 21° | 2 | 0.3 | 11.1 | 8.2 |
Cloud cover in Spring
The sky is clear or mostly clear about 75% of the time across spring.
Chance of precipitation in Spring
Saint-Louis gets around 0 mm of rain over 0 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 23 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 42 min in early March to 12 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 7.2 kWh/m².
Hazard calendar for Saint-Louis
In spring, Saint-Louis overlaps its dust season. The full year is below, with each hazard's peak months called out.
Saint-Louis sits in the Atlantic hurricane belt; the season peaks August–October.
Saint-Louis sees dust haze year-round, heaviest in June.
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 one of the better times to visit Saint-Louis for general sightseeing. The water and warmth also suit a beach or pool day.
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 25°C and nights near 20°C. Pack sun protection. Worth having: light clothes and a windbreaker.
Sea temperature near Saint-Louis in Spring
The nearest coast averages about 20°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 19 km away) is warmest in September at about 28°C and coldest in February near 19°C.
It's comfortable for a long swim from May 3 to Jan 11 — about 8.4 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 20 | 19 | 19 | 19 | 21 | 24 | 26 | 28 | 28 | 28 | 25 | 22 |
| Comfort | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Warm | Warm | Tropical | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 20 | Cool |
| Feb | 19 | Cool |
| Mar | 19 | Cool |
| Apr | 19 | Cool |
| May | 21 | Refreshing |
| Jun | 24 | Refreshing |
| Jul | 26 | Warm |
| Aug | 28 | Warm |
| Sep | 28 | Tropical |
| Oct | 28 | Warm |
| Nov | 25 | Warm |
| Dec | 22 | Refreshing |
UV index in Saint-Louis in Spring
Clear-sky midday UV across spring averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Saint-Louis peaks around March 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 8 | 11 | 13 | 11 | 12 | 10 | 10 | 11 | 11 | 9 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 11 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Very high |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 9 | Very high |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in Saint-Louis in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Saint-Louis is worst in January — around 99 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (August, 30 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 99 | 97 | 70 | 50 | 46 | 61 | 42 | 30 | 35 | 51 | 54 | 90 |
| Level | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Unhealthy | Poor | Moderate | Moderate | Poor | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 99 | Unhealthy |
| Feb | 97 | Unhealthy |
| Mar | 70 | Unhealthy |
| Apr | 50 | Poor |
| May | 46 | Poor |
| Jun | 61 | Unhealthy |
| Jul | 42 | Poor |
| Aug | 30 | Moderate |
| Sep | 35 | Moderate |
| Oct | 51 | Poor |
| Nov | 54 | Poor |
| Dec | 90 | Unhealthy |
Where is Saint-Louis?
Saint-Louis sits at 16.0°N, 16.5°W, 8 m above sea level, in Senegal. The nearest listed city is Louga, 53 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 9 m around an average of 1 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 26 m; within 80 km, only modest variations in elevation — a maximum elevation change of 57 m.
The land around Saint-Louis is covered by water (34%), artificial surfaces (27%) and wetland (22%) within 3 km, water (47%) and grassland (26%) within 16 km, and grassland (39%) and water (35%) within 80 km.
Senegal travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / D / E / K
- 230 V · 50 Hz
- Prices
- ≈ 36% of US
- price level, 2025
- GDP per capita
- $1,955
- 2025
- Happiness
- 4.8 / 10
- World Happiness, 2025
- Safe drinking water
- 27%
- of population, 2024
- Homicide rate
- 0.3
- per 100k, 2015
- Road deaths
- 23.5
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Very low
- EF EPI 442
- 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 (16.0179°, -16.4896°, elevation 8 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.