Average annual temperature is 18.6 °C
Absolute maximum temperature: 44.1 °C
Absolute minimum temperature: 0.2 °C
Number of sunny days: 241 days
Number of rainy days: 124 days
Look at detailed online map of Isthmía
* Weather data for Isthmía Greece is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 20.4 | 21.2 | 23.1 | 25.9 | 29.0 | 34.7 | 44.1 | 38.3 | 34.8 | 29.4 | 26.0 | 22.7 |
| Average daytime temperature (°C) | 15.3 | 13.6 | 17.4 | 19.3 | 23.5 | 29.8 | 37.4 | 34.5 | 28.5 | 25.9 | 21.0 | 16.9 |
| Average temperature (°C) | 10.9 | 8.9 | 12.6 | 14.6 | 18.9 | 24.6 | 30.9 | 28.9 | 23.5 | 20.2 | 16.3 | 12.0 |
| Average night temperature (°C) | 7.0 | 4.5 | 7.8 | 9.9 | 14.5 | 19.5 | 24.0 | 23.3 | 19.1 | 15.2 | 12.0 | 7.8 |
| Absolute minimum temperature (°C) | 3.4 | 0.2 | 4.8 | 6.8 | 11.6 | 14.8 | 20.8 | 20.0 | 15.4 | 11.9 | 3.7 | 3.7 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.7 | 8.3 | 9.4 | 10.7 | 10.5 | 12.6 | 13.1 | 12.6 | 9.9 | 9.9 | 8.4 | 7.5 |
| Precipitation (mm) | 57 | 9 | 30 | 18 | 78 | 25 | 0 | 2 | 155 | 2 | 25 | 58 |
| Sunny days | 19 | 21 | 18 | 16 | 13 | 17 | 29 | 25 | 20 | 25 | 18 | 20 |
| Rainy days | 12 | 7 | 13 | 14 | 18 | 13 | 2 | 6 | 10 | 6 | 12 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Isthmía during the most sunny months:
The largest precipitation sum in Isthmía is at