Average annual temperature is 13.9 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: 2.8 °C
Number of sunny days: 276 days
Number of rainy days: 89 days
Look at detailed online map of Grover Beach
* Weather data for Grover Beach 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) | 19.8 | 21.0 | 19.1 | 25.9 | 23.1 | 20.9 | 31.0 | 34.5 | 29.7 | 35.8 | 28.8 | 25.2 |
| Average daytime temperature (°C) | 15.3 | 15.4 | 14.2 | 16.7 | 16.5 | 18.0 | 22.2 | 24.6 | 22.6 | 24.4 | 21.7 | 19.1 |
| Average temperature (°C) | 10.8 | 9.8 | 10.5 | 11.9 | 12.9 | 14.6 | 15.8 | 18.1 | 17.4 | 17.1 | 14.5 | 12.8 |
| Average night temperature (°C) | 7.4 | 5.8 | 7.5 | 8.2 | 9.9 | 11.9 | 11.0 | 13.7 | 13.6 | 12.0 | 9.4 | 8.6 |
| Absolute minimum temperature (°C) | 4.2 | 2.8 | 3.2 | 5.2 | 7.1 | 9.5 | 8.8 | 10.8 | 10.3 | 8.3 | 5.2 | 4.3 |
| 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 | 11.5 | 10.8 | 11.1 | 12.6 | 11.8 | 10.5 | 10.2 | 8.8 | 7.1 |
| Precipitation (mm) | 281 | 96 | 207 | 0 | 18 | 18 | 0 | 0 | 6 | 0 | 36 | 121 |
| Sunny days | 13 | 17 | 15 | 30 | 21 | 20 | 30 | 29 | 24 | 31 | 23 | 23 |
| Rainy days | 18 | 11 | 16 | 0 | 10 | 10 | 1 | 2 | 6 | 0 | 7 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Grover Beach during the most sunny months:
The largest precipitation sum in Grover Beach is at