Saint-Louis weather in December
In December, Saint-Louis sees average daytime highs of 25°C and overnight lows near 20°C, with 174 mm of rain across 21.6 wet days and about 13.3 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.
Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 9% of the time in December, and the air most often feels muggy.
Daylight stretches from about 13 h 12 min at the start of December to 13 h 18 min by month's end. Set against the rest of the year, December is Saint-Louis's 10th-clearest and 12th-windiest month. For the whole year in context, see Saint-Louis's year-round climate.
- Daytime high
- 25°
- 4th warmest
- Overnight low
- 20°
- 9th coldest
- Rainfall
- 174 mm
- 21.6 wet days
- Daylight
- 13 h 18 min
- 5:36 AM – 6:53 PM
- Cloud cover
- 70%
- 10th clearest
- Wind
- 6 km/h
- 12th windiest
- Solar energy
- 7.08 kWh/m²
- Travel score
- 5.0
- out of 10
Temperature in December
Day-to-day highs hold fairly steady near 25°C through the month.
A typical December day in Saint-Louis reaches about 25°C in the afternoon and slips back to 20°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 26°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.
| 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) | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg low (°C) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 24 | 19 |
| 2 | 24 | 19 |
| 3 | 24 | 19 |
| 4 | 24 | 19 |
| 5 | 24 | 19 |
| 6 | 24 | 19 |
| 7 | 25 | 19 |
| 8 | 25 | 19 |
| 9 | 25 | 19 |
| 10 | 25 | 19 |
| 11 | 25 | 19 |
| 12 | 25 | 19 |
| 13 | 25 | 19 |
| 14 | 25 | 20 |
| 15 | 25 | 20 |
| 16 | 25 | 20 |
| 17 | 25 | 20 |
| 18 | 25 | 20 |
| 19 | 25 | 20 |
| 20 | 25 | 20 |
| 21 | 25 | 20 |
| 22 | 25 | 20 |
| 23 | 25 | 20 |
| 24 | 25 | 20 |
| 25 | 25 | 20 |
| 26 | 25 | 20 |
| 27 | 25 | 20 |
| 28 | 25 | 20 |
| 29 | 25 | 20 |
| 30 | 25 | 20 |
| 31 | 25 | 20 |
Saint-Louis weather by month
How December compares with the rest of the year at a glance. December is the 4th-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° / 21° | 280 | 23.9 | 13.2 | 4.5 |
| Feb | 25° / 21° | 264 | 22.7 | 12.7 | 4.4 |
| Mar | 25° / 20° | 212 | 21.3 | 12.2 | 5.0 |
| Apr | 24° / 19° | 93 | 18.2 | 11.5 | 5.6 |
| May | 22° / 18° | 86 | 17.1 | 11 | 5.8 |
| Jun | 20° / 16° | 50 | 13.7 | 10.7 | 5.9 |
| Jul | 20° / 15° | 49 | 14.3 | 10.8 | 5.7 |
| Aug | 20° / 15° | 45 | 12.6 | 11.3 | 6.1 |
| Sep | 21° / 15° | 45 | 12 | 11.9 | 6.2 |
| Oct | 22° / 16° | 56 | 13.4 | 12.5 | 6.2 |
| Nov | 24° / 18° | 96 | 16.4 | 13 | 5.8 |
| Dec | 25° / 20° | 174 | 21.6 | 13.3 | 5.0 |
Cloud cover in December
The sky is clear or mostly clear about 9% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 70%.
| 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 (%) | 34 | 34 | 34 | 34 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 31 | 31 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 24 |
| Cloudier (%) | 66 | 66 | 66 | 66 | 67 | 67 | 67 | 67 | 67 | 68 | 68 | 69 | 69 | 70 | 70 | 70 | 71 | 71 | 72 | 72 | 73 | 73 | 73 | 74 | 74 | 75 | 76 | 76 | 76 | 76 | 76 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 34 | 66 |
| 2 | 34 | 66 |
| 3 | 34 | 66 |
| 4 | 34 | 66 |
| 5 | 33 | 67 |
| 6 | 33 | 67 |
| 7 | 33 | 67 |
| 8 | 33 | 67 |
| 9 | 33 | 67 |
| 10 | 32 | 68 |
| 11 | 32 | 68 |
| 12 | 31 | 69 |
| 13 | 31 | 69 |
| 14 | 30 | 70 |
| 15 | 30 | 70 |
| 16 | 30 | 70 |
| 17 | 29 | 71 |
| 18 | 29 | 71 |
| 19 | 28 | 72 |
| 20 | 28 | 72 |
| 21 | 27 | 73 |
| 22 | 27 | 73 |
| 23 | 27 | 73 |
| 24 | 26 | 74 |
| 25 | 26 | 74 |
| 26 | 25 | 75 |
| 27 | 24 | 76 |
| 28 | 24 | 76 |
| 29 | 24 | 76 |
| 30 | 24 | 76 |
| 31 | 24 | 76 |
Chance of precipitation in December
Saint-Louis gets around 174 mm of rain over 21.6 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 70% and peaks near 78% 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 (%) | 63 | 64 | 64 | 64 | 65 | 65 | 66 | 67 | 67 | 68 | 68 | 69 | 69 | 70 | 70 | 70 | 71 | 71 | 71 | 71 | 72 | 72 | 73 | 73 | 74 | 75 | 75 | 76 | 77 | 77 | 78 |
| Rain chance (%) | |
|---|---|
| 1 | 63 |
| 2 | 64 |
| 3 | 64 |
| 4 | 64 |
| 5 | 65 |
| 6 | 65 |
| 7 | 66 |
| 8 | 67 |
| 9 | 67 |
| 10 | 68 |
| 11 | 68 |
| 12 | 69 |
| 13 | 69 |
| 14 | 70 |
| 15 | 70 |
| 16 | 70 |
| 17 | 71 |
| 18 | 71 |
| 19 | 71 |
| 20 | 71 |
| 21 | 72 |
| 22 | 72 |
| 23 | 73 |
| 24 | 73 |
| 25 | 74 |
| 26 | 75 |
| 27 | 75 |
| 28 | 76 |
| 29 | 77 |
| 30 | 77 |
| 31 | 78 |
Humidity in December
Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the muggy band about 47% of days. Sticky, muggy-or-worse air turns up on roughly 48% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 5 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 |
| Humid (%) | 59 | 59 | 58 | 56 | 55 | 55 | 54 | 52 | 50 | 49 | 48 | 47 | 46 | 45 | 45 | 44 | 44 | 43 | 43 | 43 | 42 | 42 | 42 | 41 | 40 | 39 | 38 | 37 | 36 | 34 | 33 |
| Muggy (%) | 29 | 30 | 31 | 33 | 34 | 35 | 36 | 38 | 40 | 41 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 51 | 51 | 51 | 53 | 53 | 54 | 55 | 55 | 57 | 58 | 59 | 60 | 62 | 63 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 3 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|
| 1 | 12 | 59 | 29 | 0 |
| 2 | 11 | 59 | 30 | 0 |
| 3 | 11 | 58 | 31 | 0 |
| 4 | 11 | 56 | 33 | 0 |
| 5 | 11 | 55 | 34 | 0 |
| 6 | 10 | 55 | 35 | 0 |
| 7 | 10 | 54 | 36 | 0 |
| 8 | 10 | 52 | 38 | 0 |
| 9 | 10 | 50 | 40 | 0 |
| 10 | 9 | 49 | 41 | 0 |
| 11 | 9 | 48 | 43 | 0 |
| 12 | 9 | 47 | 44 | 1 |
| 13 | 8 | 46 | 45 | 1 |
| 14 | 8 | 45 | 46 | 1 |
| 15 | 7 | 45 | 47 | 1 |
| 16 | 7 | 44 | 48 | 1 |
| 17 | 6 | 44 | 49 | 1 |
| 18 | 5 | 43 | 51 | 1 |
| 19 | 5 | 43 | 51 | 1 |
| 20 | 5 | 43 | 51 | 1 |
| 21 | 4 | 42 | 53 | 1 |
| 22 | 4 | 42 | 53 | 1 |
| 23 | 3 | 42 | 54 | 1 |
| 24 | 3 | 41 | 55 | 1 |
| 25 | 3 | 40 | 55 | 2 |
| 26 | 2 | 39 | 57 | 2 |
| 27 | 2 | 38 | 58 | 2 |
| 28 | 2 | 37 | 59 | 2 |
| 29 | 1 | 36 | 60 | 3 |
| 30 | 1 | 34 | 62 | 3 |
| 31 | 1 | 33 | 63 | 3 |
Wind in December
Winds average 6 km/h in December, the calmest month.
Across December, daily wind ranges from about 6 km/h on the calmest days to 6 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) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 6 | calm |
| 2 | 6 | calm |
| 3 | 6 | calm |
| 4 | 6 | calm |
| 5 | 6 | calm |
| 6 | 6 | calm |
| 7 | 6 | calm |
| 8 | 6 | calm |
| 9 | 6 | calm |
| 10 | 6 | calm |
| 11 | 6 | calm |
| 12 | 6 | calm |
| 13 | 6 | calm |
| 14 | 6 | calm |
| 15 | 6 | calm |
| 16 | 6 | calm |
| 17 | 6 | calm |
| 18 | 6 | calm |
| 19 | 6 | calm |
| 20 | 6 | calm |
| 21 | 6 | calm |
| 22 | 6 | calm |
| 23 | 6 | calm |
| 24 | 6 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in December
Daylight runs from about 13 h 12 min at the start of December to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 6 minutes over December. Sunrise moves from 5:32 AM to 5:43 AM, and sunset from 6:44 PM to 7:00 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) | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 |
| Sunrise (AM) | 5:32 | 5:32 | 5:32 | 5:32 | 5:33 | 5:33 | 5:33 | 5:33 | 5:34 | 5:34 | 5:34 | 5:34 | 5:35 | 5:35 | 5:35 | 5:36 | 5:36 | 5:37 | 5:37 | 5:38 | 5:38 | 5:38 | 5:39 | 5:39 | 5:40 | 5:40 | 5:41 | 5:41 | 5:42 | 5:43 | 5:43 |
| Sunset (PM) | 6:44 | 6:45 | 6:45 | 6:46 | 6:47 | 6:47 | 6:48 | 6:49 | 6:49 | 6:50 | 6:50 | 6:51 | 6:52 | 6:52 | 6:53 | 6:53 | 6:54 | 6:54 | 6:55 | 6:55 | 6:56 | 6:56 | 6:57 | 6:57 | 6:58 | 6:58 | 6:58 | 6:59 | 6:59 | 7:00 | 7:00 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.2 | 5:32 | 6:44 |
| 2 | 13.2 | 5:32 | 6:45 |
| 3 | 13.2 | 5:32 | 6:45 |
| 4 | 13.2 | 5:32 | 6:46 |
| 5 | 13.2 | 5:33 | 6:47 |
| 6 | 13.2 | 5:33 | 6:47 |
| 7 | 13.2 | 5:33 | 6:48 |
| 8 | 13.3 | 5:33 | 6:49 |
| 9 | 13.3 | 5:34 | 6:49 |
| 10 | 13.3 | 5:34 | 6:50 |
| 11 | 13.3 | 5:34 | 6:50 |
| 12 | 13.3 | 5:34 | 6:51 |
| 13 | 13.3 | 5:35 | 6:52 |
| 14 | 13.3 | 5:35 | 6:52 |
| 15 | 13.3 | 5:35 | 6:53 |
| 16 | 13.3 | 5:36 | 6:53 |
| 17 | 13.3 | 5:36 | 6:54 |
| 18 | 13.3 | 5:37 | 6:54 |
| 19 | 13.3 | 5:37 | 6:55 |
| 20 | 13.3 | 5:38 | 6:55 |
| 21 | 13.3 | 5:38 | 6:56 |
| 22 | 13.3 | 5:38 | 6:56 |
| 23 | 13.3 | 5:39 | 6:57 |
| 24 | 13.3 | 5:39 | 6:57 |
| 25 | 13.3 | 5:40 | 6:58 |
| 26 | 13.3 | 5:40 | 6:58 |
| 27 | 13.3 | 5:41 | 6:58 |
| 28 | 13.3 | 5:41 | 6:59 |
| 29 | 13.3 | 5:42 | 6:59 |
| 30 | 13.3 | 5:43 | 7:00 |
| 31 | 13.3 | 5:43 | 7:00 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 7.08 kWh/m².
For context, solar energy here swings from a low near 3.93 kWh/m² to a high of 7.11 kWh/m² in November across the year — December's 7.08 kWh/m² sits near the top of that range.
| 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) | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 6.9 | 6.9 | 6.9 | 6.8 | 6.8 | 6.8 | 6.8 |
| 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 | 7.1 | Intense |
| 2 | 7.1 | Intense |
| 3 | 7.1 | Intense |
| 4 | 7.1 | Intense |
| 5 | 7.1 | Intense |
| 6 | 7.1 | Intense |
| 7 | 7.1 | Intense |
| 8 | 7.1 | Intense |
| 9 | 7.1 | Intense |
| 10 | 7.1 | Intense |
| 11 | 7.1 | Intense |
| 12 | 7.1 | Intense |
| 13 | 7.1 | Intense |
| 14 | 7.1 | Intense |
| 15 | 7.1 | Intense |
| 16 | 7.1 | Intense |
| 17 | 7.1 | Intense |
| 18 | 7.1 | Intense |
| 19 | 7.0 | Intense |
| 20 | 7.0 | Intense |
| 21 | 7.0 | Intense |
| 22 | 7.0 | Intense |
| 23 | 7.0 | Intense |
| 24 | 7.0 | Intense |
| 25 | 6.9 | Intense |
| 26 | 6.9 | Intense |
| 27 | 6.9 | Intense |
| 28 | 6.8 | Intense |
| 29 | 6.8 | Intense |
| 30 | 6.8 | Intense |
| 31 | 6.8 | Intense |
Hazard calendar for Saint-Louis
In December, Saint-Louis sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.
Saint-Louis sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Saint-Louis's monsoon runs December–March, when most of the year's rain falls.
Is December a good time to visit Saint-Louis?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a reasonable time to visit Saint-Louis for sightseeing.
What to pack for Saint-Louis in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Saint-Louis sees daytime highs around 25°C and nights near 20°C. Pack rain gear and sun protection. Worth having: light clothes. About 22 days see rain.
Sea temperature near Saint-Louis in December
The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in February at about 28°C and coldest in August near 23°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 28 | 28 | 28 | 27 | 26 | 25 | 24 | 23 | 23 | 24 | 25 | 27 |
| Comfort | Warm | Tropical | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 28 | Warm |
| Apr | 27 | Warm |
| May | 26 | Warm |
| Jun | 25 | Warm |
| Jul | 24 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 23 | Refreshing |
| Oct | 24 | Warm |
| Nov | 25 | Warm |
| Dec | 27 | Warm |
UV index in Saint-Louis in December
Clear-sky midday UV in December peaks around 14 (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 January 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 6 (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) | 17 | 15 | 13 | 10 | 8 | 6 | 6 | 9 | 10 | 12 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | High | High | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 17 | Extreme |
| Feb | 15 | Extreme |
| Mar | 13 | Extreme |
| Apr | 10 | Extreme |
| May | 8 | Very high |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 9 | Very high |
| Sep | 10 | Extreme |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is Saint-Louis?
Saint-Louis sits at 21.3°S, 55.4°E, 40 m above sea level, in Reunion. The nearest listed city is Saint-Pierre, 9.0 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 244 m around an average of 55 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,578 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,030 m.
The land around Saint-Louis is covered by trees (40%) and artificial surfaces (20%) within 3 km, water (43%) and trees (36%) within 16 km, and water (79%) within 80 km.
Reunion travel facts
- Power plugs
- Type C / E
- 220 V · 50 Hz
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 (-21.2858°, 55.4112°, elevation 40 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).