Monthly weather forecast and Climate
Lahaina, HI US

Warmest months (with the highest average high temperature) are August and September (88°F).
Months with the lowest average high temperature are January and February (82°F).

Months with the highest average low temperature are August and September (71°F).
Coldest months (with the lowest average low temperature) are January and February (64°F).

The wettest month (with the highest rainfall) is January (7.4").
The driest month (with the lowest rainfall) is June (1.9").

Months with the highest number of rainy days are March and December (12 days).
Months with the lowest number of rainy days are June, August and September (7 days).

The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (76°F).

Months with the longest days are April, May, June, July and August (Average daylight: 13h).
Months with shortest days are January, February, November and December (Average daylight: 11h).

Months with most sunshine are May, June, July, August and September (Average sunshine: 9h).
Months with least sunshine are January, February, November and December (Average sunshine: 7).

Months with the highest UV index are June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).