Saint-Louis climate
Saint-Louis (Senegal) has a hot desert climate (Köppen BWh). The average temperature over the year is 26 °C80 °F, and about 381 mm15 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Saint-Louis climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2985 | 1560 | 2272 | 30.1 |
| Feb | 3087 | 1661 | 2374 | 100.4 |
| Mar | 3391 | 1763 | 2577 | 391.5 |
| Apr | 3392 | 1864 | 2578 | 20.1 |
| May | 3493 | 1967 | 2780 | 00.0 |
| Jun | 3494 | 2272 | 2883 | 100.4 |
| Jul | 3392 | 2476 | 2984 | 652.6 |
| Aug | 3290 | 2577 | 2984 | 1244.9 |
| Sep | 3391 | 2577 | 2984 | 1094.3 |
| Oct | 3494 | 2475 | 2984 | 200.8 |
| Nov | 3391 | 2068 | 2780 | 10.0 |
| Dec | 3087 | 1763 | 2475 | 00.0 |
| Year | 3494 | 1560 | 2680 | 38115 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 34% | 61% | 5.0 | 11:16 |
| Feb | 40% | 62% | 5.6 | 11:36 |
| Mar | 46% | 54% | 6.6 | 12:00 |
| Apr | 55% | 55% | 7.0 | 12:29 |
| May | 57% | 55% | 6.9 | 12:52 |
| Jun | 61% | 61% | 6.4 | 13:04 |
| Jul | 67% | 68% | 6.1 | 12:59 |
| Aug | 72% | 70% | 6.0 | 12:39 |
| Sep | 74% | 64% | 5.8 | 12:12 |
| Oct | 63% | 58% | 5.7 | 11:45 |
| Nov | 49% | 63% | 5.1 | 11:22 |
| Dec | 39% | 64% | 4.7 | 11:11 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Saint-Louis is like
The warmest month is October, with an average high of 34 °C94 °F and a low of 24 °C75 °F. The coldest is January, when highs average 29 °C85 °F and lows 15 °C60 °F. Seasonal differences are small — just 6.7 °C12 °F between the warmest and the coolest month.
It is dry, with about 381 mm15 in of precipitation per year. The wettest three-month stretch is July–September, which brings 78% of the annual total. Months with less than 20 mm0.8 in on average: October–February and April–June. The wettest month is August (124 mm4.9 in), the driest is May (0 mm0.0 in).
Relative humidity ranges from 34% in January to 74% in September. The clearest skies (lowest average cloud amount, 54%) are typical of March. Average wind speed near the ground ranges from 9 km/h (5 mph) in September to 17 km/h (10 mph) in April. Daylight lasts from about 11.2 hours in December to 13.1 hours in June.
Best time to visit Saint-Louis
Based on these averages, the most comfortable months for sightseeing and outdoor activities are December–February. Average highs then reach 29 °C85 °F to 30 °C87 °F. Precipitation is 0 mm0.0 in to 10 mm0.4 in per month.
The most challenging month is August, which is hot, with average highs of 32 °C90 °F.
Comfort score: months are ranked by how close they come to an ideal. That means an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Saint-Louis
- Wetter months (March, July–September) — highs 3290 to 33 °C92 °F, lows 1763 to 25 °C77 °F, about 84 mm3.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Drier months (October–February, April–June) — highs 2985 to 34 °C94 °F, lows 1560 to 24 °C75 °F, about 6 mm0.2 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Saint-Louis compares
The nearest larger place is Touba, about 144 km to the southeast. Compared with it, Saint-Louis is on average 1.7 °C3.1 °F cooler. It receives 31% less precipitation (381 mm15 in vs 553 mm22 in). The difference is largest in May (4.7 °C8.5 °F cooler).
World Climates covers 12 places in Senegal. By annual mean temperature, Saint-Louis is the 8th warmest of them. By annual precipitation, it is the 12th wettest. See all of them on the Senegal climate page.
Some places in other countries have a very similar pattern of temperature and rainfall (with seasons shifted for the other hemisphere). The closest matches are Serekunda (Gambia, Aw), Piura (Peru, BWh) and Sullana (Peru, BWh).
Nearby places
- Climate in Louga 53 km · 27 °C80 °F · 479 mm19 in
- Climate in Touba 144 km · 28 °C83 °F · 553 mm22 in
- Climate in Thiès 144 km · 25 °C78 °F · 535 mm21 in
- Climate in Diourbel 155 km · 28 °C82 °F · 636 mm25 in
- Climate in Pikine 170 km · 24 °C76 °F · 514 mm20 in
- Climate in Dakar 179 km · 24 °C76 °F · 556 mm22 in
- Climate in Mbour 185 km · 26 °C79 °F · 558 mm22 in
- Climate in Kaolack 212 km · 27 °C81 °F · 725 mm29 in
Frequently asked questions
What is the warmest month in Saint-Louis?
October is the warmest month in Saint-Louis. Its average high is 34 °C (94 °F) and its average low is 24 °C (75 °F).
What is the coldest month in Saint-Louis?
January is the coldest month. Its average high is 29 °C (85 °F) and its average low is 15 °C (60 °F).
When does it rain the most in Saint-Louis?
August is the wettest month with about 124 mm (4.9 in) of precipitation. May is the driest with about 0 mm (0.0 in).
What is the best time to visit Saint-Louis?
Judging by long-term averages, the most comfortable months are December–February.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station. So they can differ from airport records. The gaps are largest on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.