Hawaii Weather in September
Every Island – and even districts on an island – is slightly different
| Location | Precipitation (in) | Avg Temp (F) | Max Temp (F) | Min Temp (F) |
|---|---|---|---|---|
| Oahu-East | 1.65 | 79.9 | 84 | 75.5 |
| Oahu-West | 0.83 | 81.8 | 88.4 | 74.7 |
| Big Island-East | 8.51 | 76.5 | 83.5 | 69.7 |
| Big Island-West | 0.6 | 80.9 | 87.1 | 75.3 |
| Maui | 0.41 | 80.7 | 90.1 | 71 |
| Kauai | 2.1 | 80.1 | 85.4 | 74.7 |
Temperature is slowly dropping from 31°C (88°F) down to 29°C (84°F). Daily lows around 24°C (75°F) keep the nights cool and eliminate the need for air-conditioning if you’re lucky and your building didn’t soak up the late-afternoon sunshine. The sky is partly cloudy to clear about 73% of the time, so your chances are good you’ll get the perfect day you want for your vacation or whatever you have planned. (work?) Little change of chance of rain with it ranging from 32 – 36%. Precipitation is, as usual, mostly light. When it falls it has a 68% chance of being light rain. Humidity goes 81 – 82% during daytime highs and hovers between 49 – 51% for lows. Most (77%) of the time the wind is out of the North – Northeast – and West.
