San Luis monthly weather averages
Average daytime temperature
The bar chart below shows the average monthly peak daytime temperatures at San Luis
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 24 | 25.7 | 28.2 | 29.6 | 29.7 | 28.5 | 27.6 | 28 | 27.7 | 26.4 | 24.8 | 24.1 |
| °F | 75.3 | 78.3 | 82.7 | 85.2 | 85.5 | 83.3 | 81.7 | 82.4 | 81.9 | 79.4 | 76.6 | 75.4 |
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 | 74 | 49 | 38 | 48 | 148 | 338 | 345 | 303 | 372 | 240 | 127 | 100 |
| inches | 2.9 | 1.9 | 1.5 | 1.9 | 5.8 | 13.3 | 13.6 | 11.9 | 14.6 | 9.5 | 5 | 3.9 |
| Rainy days | 13 | 9 | 6 | 6 | 12 | 20 | 21 | 21 | 21 | 19 | 16 | 15 |
Average annual rainfall in San Luis: 2107.066mm (829.6 inches)
Average daily sunshine
The bar chart below shows the average daily sunshine hours in San Luis
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 6.3 | 7 | 8.1 | 8.1 | 8.4 | 7 | 6.6 | 6.6 | 5.7 | 5.9 | 5.7 | 6 |
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 | 15.4 | 15.3 | 16.4 | 17.6 | 18.6 | 19.3 | 19 | 19 | 18.9 | 18.3 | 17.1 | 16.1 |
| Max °C | 24.3 | 26 | 28.5 | 29.9 | 30 | 28.8 | 27.9 | 28.2 | 28 | 26.6 | 25 | 24.3 |
| Min °F | 59.6 | 59.5 | 61.4 | 63.6 | 65.5 | 66.7 | 66.1 | 66.2 | 65.9 | 64.9 | 62.7 | 61 |
| Max °F | 67.6 | 69.1 | 72.3 | 74.7 | 75.7 | 75.2 | 74.1 | 74.5 | 74.1 | 72.3 | 69.8 | 68.4 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 27.2 | 27.2 | 27.6 | 28.3 | 28.9 | 29.3 | 29.2 | 29.5 | 29.6 | 29.4 | 28.7 | 27.8 |
| °F | 81 | 81 | 81.6 | 83 | 84 | 84.7 | 84.5 | 85 | 85.3 | 84.9 | 83.6 | 82.1 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 19 | 20 | 21 | 21 | 20 | 19 | 20 | 19 | 18 | 17 | 18 | 18 |
| mph | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 82% | 78% | 74% | 75% | 75% | 83% | 85% | 84% | 87% | 85% | 85% | 84% |
Other monthly averages
San Luis weather stats
| Hottest month: | May | 29.7°C 85.5°F |
|---|---|---|
| Driest month: | March | 38mm 1.5ins |
| Sunniest month: | March | 8.1hrs |
| Coldest month: | January | 24°C 75.2°F |
| Wettest month: | September | 372mm 14.6ins |
| Warmest sea: | September | 29.6°C 85.3°F |
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