Saint-Louis weather in July
In July, Saint-Louis sees average daytime highs of 28°C and overnight lows near 25°C, with 11 mm of rain across 2 wet days and about 12.9 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.
Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 53% of the time in July, and the air most often feels oppressive.
Daylight stretches from about 12 h 54 min at the start of July to 12 h 42 min by month's end. Set against the rest of the year, July is Saint-Louis's 8th-clearest and 9th-windiest month. For the whole year in context, see Saint-Louis's year-round climate.
- Daytime high
- 28°
- 5th warmest
- Overnight low
- 25°
- 9th coldest
- Rainfall
- 11 mm
- 2 wet days
- Daylight
- 12 h 54 min
- 6:46 AM – 7:38 PM
- Cloud cover
- 42%
- 8th clearest
- Wind
- 19 km/h
- 9th windiest
- Solar energy
- 6.58 kWh/m²
- Travel score
- 7.6
- out of 10
Saint-Louis is city and regional capital in Senegal.
- Founded
- 1659
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in July
Day-to-day highs hold fairly steady near 28°C through the month.
A typical July day in Saint-Louis reaches about 28°C in the afternoon and slips back to 25°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, July runs about 1°C warmer than June and about 1°C cooler than August.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 27 | 25 |
| 2 | 27 | 25 |
| 3 | 27 | 25 |
| 4 | 27 | 25 |
| 5 | 28 | 25 |
| 6 | 28 | 25 |
| 7 | 28 | 25 |
| 8 | 28 | 25 |
| 9 | 28 | 25 |
| 10 | 28 | 25 |
| 11 | 28 | 25 |
| 12 | 28 | 25 |
| 13 | 28 | 25 |
| 14 | 28 | 25 |
| 15 | 28 | 25 |
| 16 | 28 | 25 |
| 17 | 28 | 25 |
| 18 | 28 | 25 |
| 19 | 28 | 25 |
| 20 | 28 | 25 |
| 21 | 28 | 26 |
| 22 | 28 | 26 |
| 23 | 28 | 26 |
| 24 | 28 | 26 |
| 25 | 28 | 26 |
| 26 | 28 | 26 |
| 27 | 28 | 26 |
| 28 | 28 | 26 |
| 29 | 28 | 26 |
| 30 | 28 | 26 |
| 31 | 28 | 26 |
How July really feels in Saint-Louis
Once humidity and wind are folded in, July averages 4 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Saint-Louis weather by month
How July compares with the rest of the year at a glance. July is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.
| 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 July
The sky is clear or mostly clear about 53% of the time in July.
Beyond those clear spells, partly cloudy skies cover about 19% of July, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 80 | 80 | 80 | 79 | 78 | 78 | 77 | 76 | 76 | 75 | 75 | 75 | 73 | 73 | 73 | 72 | 72 | 70 | 70 | 70 | 70 | 68 | 68 | 67 | 67 | 67 | 66 | 66 | 65 | 65 | 65 |
| Cloudier (%) | 20 | 20 | 20 | 21 | 22 | 22 | 23 | 24 | 24 | 25 | 25 | 25 | 27 | 27 | 27 | 28 | 28 | 30 | 30 | 30 | 30 | 32 | 32 | 33 | 33 | 33 | 34 | 34 | 35 | 35 | 35 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 80 | 20 |
| 2 | 80 | 20 |
| 3 | 80 | 20 |
| 4 | 79 | 21 |
| 5 | 78 | 22 |
| 6 | 78 | 22 |
| 7 | 77 | 23 |
| 8 | 76 | 24 |
| 9 | 76 | 24 |
| 10 | 75 | 25 |
| 11 | 75 | 25 |
| 12 | 75 | 25 |
| 13 | 73 | 27 |
| 14 | 73 | 27 |
| 15 | 73 | 27 |
| 16 | 72 | 28 |
| 17 | 72 | 28 |
| 18 | 70 | 30 |
| 19 | 70 | 30 |
| 20 | 70 | 30 |
| 21 | 70 | 30 |
| 22 | 68 | 32 |
| 23 | 68 | 32 |
| 24 | 67 | 33 |
| 25 | 67 | 33 |
| 26 | 67 | 33 |
| 27 | 66 | 34 |
| 28 | 66 | 34 |
| 29 | 65 | 35 |
| 30 | 65 | 35 |
| 31 | 65 | 35 |
Chance of precipitation in July
Saint-Louis gets around 11 mm of rain over 2 wet days in July. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 7% and peaks near 15% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 13 | 13 | 14 | 15 |
| Rain chance (%) | |
|---|---|
| 1 | 2 |
| 2 | 2 |
| 3 | 2 |
| 4 | 2 |
| 5 | 2 |
| 6 | 3 |
| 7 | 3 |
| 8 | 3 |
| 9 | 3 |
| 10 | 3 |
| 11 | 3 |
| 12 | 4 |
| 13 | 4 |
| 14 | 5 |
| 15 | 5 |
| 16 | 5 |
| 17 | 6 |
| 18 | 6 |
| 19 | 7 |
| 20 | 7 |
| 21 | 8 |
| 22 | 9 |
| 23 | 9 |
| 24 | 10 |
| 25 | 11 |
| 26 | 12 |
| 27 | 12 |
| 28 | 13 |
| 29 | 13 |
| 30 | 14 |
| 31 | 15 |
Humidity in July
Most of July feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, July lands in the oppressive band about 78% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 14 | 12 | 12 | 11 | 10 | 10 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 3 |
| Oppressive (%) | 83 | 85 | 84 | 85 | 85 | 85 | 85 | 85 | 85 | 84 | 84 | 84 | 83 | 83 | 82 | 81 | 80 | 80 | 79 | 78 | 76 | 75 | 73 | 72 | 71 | 69 | 68 | 66 | 65 | 64 | 63 |
| Miserable (%) | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 10 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 18 | 19 | 21 | 23 | 24 | 26 | 28 | 30 | 31 | 32 | 34 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 14 | 83 | 3 |
| 2 | 12 | 85 | 3 |
| 3 | 12 | 84 | 4 |
| 4 | 11 | 85 | 4 |
| 5 | 10 | 85 | 5 |
| 6 | 10 | 85 | 5 |
| 7 | 9 | 85 | 6 |
| 8 | 9 | 85 | 6 |
| 9 | 8 | 85 | 7 |
| 10 | 8 | 84 | 8 |
| 11 | 8 | 84 | 8 |
| 12 | 7 | 84 | 9 |
| 13 | 7 | 83 | 10 |
| 14 | 7 | 83 | 10 |
| 15 | 7 | 82 | 11 |
| 16 | 7 | 81 | 12 |
| 17 | 7 | 80 | 13 |
| 18 | 6 | 80 | 14 |
| 19 | 6 | 79 | 15 |
| 20 | 6 | 78 | 16 |
| 21 | 6 | 76 | 18 |
| 22 | 6 | 75 | 19 |
| 23 | 6 | 73 | 21 |
| 24 | 5 | 72 | 23 |
| 25 | 5 | 71 | 24 |
| 26 | 5 | 69 | 26 |
| 27 | 4 | 68 | 28 |
| 28 | 4 | 66 | 30 |
| 29 | 4 | 65 | 31 |
| 30 | 4 | 64 | 32 |
| 31 | 3 | 63 | 34 |
Wind in July
Winds average 19 km/h in July.
Across July, daily wind ranges from about 18 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 20 | light breeze |
| 2 | 20 | light breeze |
| 3 | 20 | light breeze |
| 4 | 20 | light breeze |
| 5 | 20 | light breeze |
| 6 | 19 | light breeze |
| 7 | 19 | light breeze |
| 8 | 19 | light breeze |
| 9 | 19 | light breeze |
| 10 | 19 | light breeze |
| 11 | 19 | light breeze |
| 12 | 19 | light breeze |
| 13 | 19 | light breeze |
| 14 | 19 | light breeze |
| 15 | 19 | light breeze |
| 16 | 19 | light breeze |
| 17 | 19 | light breeze |
| 18 | 19 | light breeze |
| 19 | 19 | light breeze |
| 20 | 19 | light breeze |
| 21 | 19 | light breeze |
| 22 | 19 | light breeze |
| 23 | 19 | light breeze |
| 24 | 19 | light breeze |
| 25 | 19 | light breeze |
| 26 | 19 | light breeze |
| 27 | 19 | light breeze |
| 28 | 19 | light breeze |
| 29 | 18 | light breeze |
| 30 | 18 | light breeze |
| 31 | 18 | light breeze |
Sunrise & sunset in July
Daylight runs from about 12 h 54 min at the start of July to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 12 minutes over July. Sunrise moves from 6:41 AM to 6:50 AM, and sunset from 7:38 PM to 7:34 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 |
| Sunrise (AM) | 6:41 | 6:41 | 6:42 | 6:42 | 6:42 | 6:42 | 6:43 | 6:43 | 6:43 | 6:44 | 6:44 | 6:44 | 6:45 | 6:45 | 6:45 | 6:46 | 6:46 | 6:46 | 6:46 | 6:47 | 6:47 | 6:47 | 6:48 | 6:48 | 6:48 | 6:49 | 6:49 | 6:49 | 6:49 | 6:50 | 6:50 |
| Sunset (PM) | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:38 | 7:37 | 7:37 | 7:37 | 7:37 | 7:37 | 7:37 | 7:36 | 7:36 | 7:36 | 7:36 | 7:35 | 7:35 | 7:35 | 7:34 | 7:34 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.9 | 6:41 | 7:38 |
| 2 | 12.9 | 6:41 | 7:38 |
| 3 | 12.9 | 6:42 | 7:38 |
| 4 | 12.9 | 6:42 | 7:38 |
| 5 | 12.9 | 6:42 | 7:38 |
| 6 | 12.9 | 6:42 | 7:38 |
| 7 | 12.9 | 6:43 | 7:38 |
| 8 | 12.9 | 6:43 | 7:38 |
| 9 | 12.9 | 6:43 | 7:38 |
| 10 | 12.9 | 6:44 | 7:38 |
| 11 | 12.9 | 6:44 | 7:38 |
| 12 | 12.9 | 6:44 | 7:38 |
| 13 | 12.9 | 6:45 | 7:38 |
| 14 | 12.9 | 6:45 | 7:38 |
| 15 | 12.9 | 6:45 | 7:38 |
| 16 | 12.9 | 6:46 | 7:38 |
| 17 | 12.9 | 6:46 | 7:37 |
| 18 | 12.9 | 6:46 | 7:37 |
| 19 | 12.8 | 6:46 | 7:37 |
| 20 | 12.8 | 6:47 | 7:37 |
| 21 | 12.8 | 6:47 | 7:37 |
| 22 | 12.8 | 6:47 | 7:37 |
| 23 | 12.8 | 6:48 | 7:36 |
| 24 | 12.8 | 6:48 | 7:36 |
| 25 | 12.8 | 6:48 | 7:36 |
| 26 | 12.8 | 6:49 | 7:36 |
| 27 | 12.8 | 6:49 | 7:35 |
| 28 | 12.8 | 6:49 | 7:35 |
| 29 | 12.8 | 6:49 | 7:35 |
| 30 | 12.7 | 6:50 | 7:34 |
| 31 | 12.7 | 6:50 | 7:34 |
Solar energy in July
Average shortwave solar energy reaching the ground each day in July, about 6.58 kWh/m².
For context, solar energy here swings from a low near 5 kWh/m² to a high of 7.37 kWh/m² in May across the year — July's 6.58 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.9 | 6.9 | 6.9 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.7 | 6.7 | 6.7 | 6.7 | 6.7 | 6.6 | 6.6 | 6.6 | 6.6 | 6.5 | 6.5 | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.9 | Intense |
| 2 | 6.9 | Intense |
| 3 | 6.9 | Intense |
| 4 | 6.8 | Intense |
| 5 | 6.8 | Intense |
| 6 | 6.8 | Intense |
| 7 | 6.8 | Intense |
| 8 | 6.8 | Intense |
| 9 | 6.7 | Intense |
| 10 | 6.7 | Intense |
| 11 | 6.7 | Intense |
| 12 | 6.7 | Intense |
| 13 | 6.7 | Intense |
| 14 | 6.6 | Intense |
| 15 | 6.6 | Intense |
| 16 | 6.6 | Intense |
| 17 | 6.6 | Intense |
| 18 | 6.5 | Intense |
| 19 | 6.5 | Intense |
| 20 | 6.5 | Intense |
| 21 | 6.5 | Intense |
| 22 | 6.5 | Intense |
| 23 | 6.4 | Intense |
| 24 | 6.4 | Intense |
| 25 | 6.4 | Intense |
| 26 | 6.4 | Intense |
| 27 | 6.3 | Intense |
| 28 | 6.3 | Intense |
| 29 | 6.3 | Intense |
| 30 | 6.3 | Intense |
| 31 | 6.3 | Intense |
Hazard calendar for Saint-Louis
In July, Saint-Louis sits inside its atlantic hurricane and 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 July a good time to visit Saint-Louis?
Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
July 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 July
From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In July, Saint-Louis sees daytime highs around 28°C and nights near 25°C. Pack light clothes and sun protection.
Sea temperature near Saint-Louis in July
The nearest coast averages about 26°C in July — 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 July
Clear-sky midday UV in July peaks around 10 (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 July
Average fine-particle pollution (PM2.5) through the year — so you can see where July 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).