New Castle Climate: Weather by Month and Best Time to Visit
Best months for New Castle: September, August, July.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 2°C | -6°C | 80 mm | 10 | – | – | 4.0 |
| February | 4°C | -4°C | 67 mm | 9 | – | – | 4.6 |
| March | 10°C | 0°C | 96 mm | 11 | – | – | 5.5 |
| April | 17°C | 6°C | 120 mm | 13 | – | – | 6.4 |
| May | 22°C | 12°C | 118 mm | 13 | – | – | 7.1 |
| June | 27°C | 17°C | 108 mm | 12 | – | – | 7.3 |
| July | 28°C | 19°C | 88 mm | 12 | – | – | 7.5 |
| August | 28°C | 18°C | 76 mm | 10 | – | – | 7.8 |
| September | 25°C | 14°C | 73 mm | 8 | – | – | 8.0 |
| October | 18°C | 8°C | 80 mm | 9 | – | – | 7.2 |
| November | 11°C | 2°C | 86 mm | 9 | – | – | 5.9 |
| December | 4°C | -3°C | 81 mm | 10 | – | – | 4.5 |