Average annual temperature is 13.5 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: 2.5 °C
Number of sunny days: 269 days
Number of rainy days: 96 days
Look at detailed online map of San Luis Obispo
* Weather data for San Luis Obispo United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 19.0 | 20.6 | 17.5 | 21.9 | 19.8 | 20.6 | 24.6 | 30.1 | 25.7 | 36.7 | 28.9 | 25.9 |
| Average daytime temperature (°C) | 14.8 | 14.5 | 13.0 | 14.7 | 15.1 | 16.7 | 21.1 | 22.4 | 21.0 | 23.1 | 20.9 | 18.2 |
| Average temperature (°C) | 10.8 | 9.8 | 10.1 | 11.2 | 12.4 | 13.9 | 16.0 | 17.4 | 16.7 | 16.5 | 14.2 | 12.6 |
| Average night temperature (°C) | 7.9 | 6.3 | 7.6 | 8.6 | 10.3 | 11.9 | 12.1 | 14.1 | 13.6 | 12.3 | 9.7 | 8.7 |
| Absolute minimum temperature (°C) | 4.2 | 2.5 | 4.5 | 4.9 | 7.9 | 10.3 | 10.3 | 11.3 | 10.7 | 8.3 | 5.0 | 5.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.1 | 8.9 | 7.9 | 11.6 | 11.0 | 11.7 | 12.6 | 11.7 | 10.6 | 10.1 | 8.8 | 7.0 |
| Precipitation (mm) | 334 | 106 | 282 | 0 | 16 | 13 | 0 | 0 | 9 | 0 | 36 | 133 |
| Sunny days | 13 | 17 | 12 | 29 | 19 | 22 | 30 | 30 | 23 | 31 | 22 | 21 |
| Rainy days | 18 | 11 | 19 | 1 | 12 | 8 | 1 | 1 | 7 | 0 | 8 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit San Luis Obispo during the most sunny months:
The largest precipitation sum in San Luis Obispo is at