Best time to go to Chatham Island
The best time to visit Chatham Island can depend on the weather and when visitor numbers rise and fall. The hottest average temperature in Chatham Island falls in August, when visitor numbers are average and weather is sunny with no rain. The coolest average temperature in Chatham Island falls in January, visitor numbers are slightly high and weather is mostly sunny with light rain.
 Calendar Month |  Temperature |  Precipitation |  Cloudiness |  Occupancy |
| January | 56.7°F (13.7°C) | Light Rain | Mostly Sunny | Slightly High |
| February | 56.8°F (13.8°C) | Light Rain | Mostly Sunny | Average |
| March | 58.5°F (14.7°C) | Light Rain | Mostly Sunny | Slightly High |
| April | 61.5°F (16.4°C) | Light Rain | Mostly Sunny | Average |
| May | 66.2°F (19.0°C) | No Rain | Sunny | Slightly Low |
| June | 71.4°F (21.9°C) | No Rain | Sunny | Slightly Low |
| July | 75.9°F (24.4°C) | No Rain | Sunny | Average |
| August | 77.4°F (25.2°C) | No Rain | Sunny | Average |
| September | 73.9°F (23.3°C) | No Rain | Sunny | Average |
| October | 69.4°F (20.8°C) | Light Rain | Sunny | Slightly Low |
| November | 62.6°F (17.0°C) | Light Rain | Mostly Sunny | Average |
| December | 58.8°F (14.9°C) | Light Rain | Mostly Sunny | Slightly High |
