Isernia Climate: Weather by Month and Best Time to Visit
Best months for Isernia: July, August, June, September.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 8°C | 0°C | 88 mm | 10 | – | – | 5.2 |
| February | 9°C | 0°C | 93 mm | 11 | – | – | 5.3 |
| March | 12°C | 3°C | 106 mm | 13 | – | – | 5.6 |
| April | 15°C | 6°C | 108 mm | 14 | – | – | 5.9 |
| May | 19°C | 9°C | 89 mm | 13 | – | – | 6.9 |
| June | 24°C | 13°C | 62 mm | 10 | – | – | 7.7 |
| July | 26°C | 16°C | 43 mm | 8 | – | – | 8.0 |
| August | 27°C | 16°C | 36 mm | 8 | – | – | 8.0 |
| September | 22°C | 12°C | 79 mm | 10 | – | – | 7.7 |
| October | 18°C | 9°C | 111 mm | 10 | – | – | 6.9 |
| November | 13°C | 5°C | 150 mm | 12 | – | – | 5.6 |
| December | 9°C | 1°C | 121 mm | 12 | – | – | 5.1 |