Hāwī Weather in September

The climate in Hāwī during September can be summarized as hot, humid and reasonably dry.

September is in the fall / autumn in Hāwī and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a muggy 29°C (83°F), whilst at night 20°C (67°F) is normal.

On average September is the driest month of the year in Hāwī with around 64mm 2.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.5 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Hāwī in September 2025.