The highest day temperature in July 2025 was 83°F. The lowest night temperature was 70°F. The average values for day and night temperatures during July were 78.6°F и 72.1°F respectivly.

The average sea surface temperature in July 2025 for Maui was 82.0°F. The maximum and minimum values were 81.4°F and 82.6°F respectively.

Most of the days in July are sunny but you can also expect cloudy and gloomy days.

Precipitation total in July for Maui is 1.8 in. It makes july one of the least rainy months of the year.

The average wind speed in July is 13.9 mph. It makes July the most windy month of the year for Maui.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Maui in July is 8.2 hours.