Kahului in September: Weather, Average temperature and Climate

Kahului is typically warm in September.

Maximum temperatures go up compared to the previous month from +29°C to +29°C. The minimum temperature also goes up from +23°C to +23°C.

It’s generally warm, but pack a long-sleeve shirt for evenings.

September is one of the warmest months in Kahului, here is the comparison with other months:

September often has better weather than August. The temperature levels stay the same in the area of +29°C for average maximum temperature during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 23 mm to 17 mm. Humidity levels don’t change as the month goes on, averaging around 69%. Winds are calmer in comparison to August, going down from 5 m/s to 4 m/s on average. The amount of sunny days stay about the same, averaging 8 sunny days during the month.

Next month (October) brings a further decline in the weather.

The climate in Kahului in September has not changed much over the last 43 years.

The average temperature was the lowest in 1983 (+26°C) and the highest in 2014 (+29°C). The driest year was 1983 with only 175 mm of rainfall, and the wettest year was 1989 with 1105 mm.

For this page, we’ve looked at the typical weather in Kahului, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.