Saint-Louis monthly weather averages
Average daytime temperature
The bar chart below shows the average monthly peak daytime temperatures at Saint-Louis
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 26.8 | 26.8 | 26.7 | 25.4 | 23.7 | 22.1 | 21.3 | 21.3 | 22.2 | 23.2 | 24.8 | 26.1 |
| °F | 80.2 | 80.3 | 80 | 77.7 | 74.6 | 71.8 | 70.3 | 70.4 | 72 | 73.7 | 76.7 | 79 |
Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.
Average rainfall & rainy days
The graph below shows the average rainfall and number of rainy days per month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 218 | 193 | 210 | 160 | 109 | 83 | 77 | 69 | 47 | 53 | 84 | 133 |
| inches | 8.6 | 7.6 | 8.3 | 6.3 | 4.3 | 3.3 | 3 | 2.7 | 1.9 | 2.1 | 3.3 | 5.2 |
| Rainy days | 18 | 19 | 19 | 18 | 15 | 13 | 15 | 16 | 13 | 14 | 13 | 17 |
Average annual rainfall in Saint-Louis: 1467.767mm (577.9 inches)
Average daily sunshine
The bar chart below shows the average daily sunshine hours in Saint-Louis
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 7.7 | 7.2 | 6.7 | 6.4 | 6.7 | 6.3 | 6.3 | 6.5 | 6.9 | 7.4 | 7.7 | 7.1 |
Day / night temperatures
The graph below shows the daily range of temperatures for each month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 20.3 | 20.6 | 20 | 18.9 | 17 | 15.6 | 14.8 | 14.3 | 14.8 | 16.1 | 17.6 | 19.4 |
| Max °C | 27 | 27 | 26.9 | 25.6 | 23.9 | 22.3 | 21.5 | 21.5 | 22.4 | 23.4 | 25 | 26.3 |
| Min °F | 68.5 | 69.1 | 67.9 | 65.9 | 62.5 | 60 | 58.6 | 57.7 | 58.6 | 60.9 | 63.7 | 66.8 |
| Max °F | 74.5 | 74.8 | 74.1 | 72 | 68.7 | 66 | 64.6 | 64.2 | 65.5 | 67.5 | 70.3 | 73 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 27.5 | 27.9 | 27.7 | 27.1 | 26.1 | 24.9 | 23.8 | 23.2 | 23.3 | 24 | 25.2 | 26.6 |
| °F | 81.5 | 82.2 | 81.9 | 80.9 | 79 | 76.8 | 74.8 | 73.8 | 74 | 75.1 | 77.3 | 79.9 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 15 | 14 | 14 | 13 | 13 | 13 | 15 | 16 | 14 | 14 | 13 | 13 |
| mph | 9 | 9 | 9 | 8 | 8 | 8 | 9 | 10 | 9 | 9 | 8 | 8 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
Relative humidity
The graph below shows the average relative humidity.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 83% | 84% | 85% | 85% | 83% | 83% | 82% | 81% | 80% | 80% | 81% | 82% |
Other monthly averages
Saint-Louis weather stats
| Hottest month: | February | 26.8°C 80.2°F |
|---|---|---|
| Driest month: | September | 47mm 1.9ins |
| Sunniest month: | May | 6.7hrs |
| Coldest month: | August | 21.3°C 70.3°F |
| Wettest month: | January | 218mm 8.6ins |
| Warmest sea: | February | 27.9°C 82.2°F |
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