Climate Insights for Kīhei

The climate in Kīhei is warm and mild. The average annual temperature is 24°C and approximately 372mm of precipitation falls per year. April is the wettest month, receiving around 55mm of rainfall. Kīhei is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: September, August, July. The coldest months are February, January, March, when temperatures can drop to 20°C.

Kīhei has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is September, when average highs reach 30°C and the mean temperature sits around 26°C. February is the coolest month, with minimum temperatures around 20°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.

Kīhei is a quite dry location, receiving approximately 372mm of precipitation annually, which averages out to around 31mm per month. The wettest month is April, averaging 55mm of rainfall. December and February also tend to see above-average precipitation. The driest month is June, with just 11mm. That's 43mm less than April, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Kīhei is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently summer in Kīhei, which began on June 21, 2026. Kīhei is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in September at around 30°C, while the coldest stretch bottoms out in February near 20°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Kīhei is during January, February, March, April, May, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 39mm per month. By contrast, September can be uncomfortably hot with temperatures reaching 30°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Kīhei based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.