Average annual temperature is 15.2 °C
Absolute maximum temperature: 40.3 °C
Absolute minimum temperature: -8.5 °C
Number of sunny days: 260 days
Number of rainy days: 97 days
Number of snow days: 8 days
Look at detailed online map of Arenal
* Weather data for Arenal 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) | 13.9 | 15.8 | 23.1 | 31.2 | 31.6 | 37.5 | 40.3 | 39.2 | 36.8 | 29.3 | 25.5 | 14.9 |
| Average daytime temperature (°C) | 7.9 | 10.8 | 15.0 | 23.0 | 27.7 | 32.3 | 37.8 | 34.7 | 30.7 | 24.6 | 15.2 | 7.9 |
| Average temperature (°C) | 2.1 | 3.3 | 7.7 | 14.2 | 20.3 | 24.8 | 30.7 | 27.3 | 23.4 | 17.1 | 8.1 | 2.2 |
| Average night temperature (°C) | -2.2 | -2.3 | 1.8 | 6.0 | 13.0 | 16.3 | 22.9 | 20.7 | 16.0 | 9.8 | 2.0 | -2.4 |
| Absolute minimum temperature (°C) | -6.8 | -8.5 | -4.5 | -3.9 | 9.3 | 11.7 | 18.1 | 17.8 | 11.4 | -0.7 | -5.7 | -5.9 |
| 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 | 14.2 | 13.4 | 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) | 7.7 | 8.9 | 9.3 | 11.7 | 12.0 | 12.9 | 12.8 | 11.6 | 11.0 | 10.1 | 8.8 | 8.1 |
| Precipitation (mm) | 20 | 21 | 53 | 7 | 32 | 7 | 1 | 29 | 25 | 3 | 28 | 53 |
| Sunny days | 20 | 18 | 17 | 24 | 17 | 21 | 27 | 20 | 23 | 27 | 23 | 23 |
| Rainy days | 5 | 8 | 14 | 6 | 14 | 9 | 4 | 11 | 7 | 4 | 7 | 8 |
| Snow days | 6 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Arenal is at