
| Month | Low | High |
|---|---|---|
| Jan | 63.3°F | 80.3°F |
| Feb | 63.1°F | 80.8°F |
| Mar | 64.6°F | 81.5°F |
| Apr | 66.0°F | 82.5°F |
| May | 67.0°F | 84.3°F |
| Jun | 69.3°F | 86.0°F |
| Jul | 70.8°F | 86.9°F |
| Aug | 71.0°F | 87.9°F |
| Sept | 70.0°F | 88.1°F |
| Oct | 69.4°F | 86.9°F |
| Nov | 67.9°F | 84.1°F |
| Dec | 65.1°F | 81.7°F |
Kahului's coldest month is February when the average temperature overnight is 63.1°F. In September, the warmest month, the average day time temperature rises to 88.1°F.

| Month | Precipitation |
|---|---|
| Jan | 3.74in. |
| Feb | 2.36in. |
| Mar | 2.35in. |
| Apr | 1.75in. |
| May | 0.66in. |
| Jun | 0.23in. |
| Jul | 0.49in. |
| Aug | 0.53in. |
| Sept | 0.39in. |
| Oct | 1.05in. |
| Nov | 2.17in. |
| Dec | 3.08in. |
The driest month in Kahului is June with 0.23 inches of precipitation, and with 3.74 inches January is the wettest month.