The climate in Kahului during September can be summarized as hot, humid and dry.
September is in the fall / autumn in Kahului and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (87°F), whilst at night 21°C (69°F) is normal.
|Daytime temperature||30.5°C 86.8°F|
|Nightly temperature||20.8°C 69.4°F|
|Average temperature||25.6°C 78.1°F|
|Daily sunshine||8.7 hrs|
|Avg rainfall||22 mm 0.9 ins|
|Rainy days||6 days|
|Sea temperature||26.8°C 80.3°F|
|Windspeed||19.8kph 12 mph|
On average September is the 2nd driest month of the year in Kahului with around 22mm 0.9 inches of rain making it a dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.
On the flip side this corresponds to an average of 8.7 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 September 2019.
|Hottest month:||August||30.2°C 86.4°F|
|Driest month:||June||20mm 0.8ins|
|Coldest month:||January||26.1°C 79°F|
|Wettest month:||January||138mm 5.4ins|