The highest day temperature in July 2025 was 86°F. The lowest night temperature was 72°F. The average values for day and night temperatures during July were 84.4°F и 74.6°F respectivly.

The average sea surface temperature in July 2025 for Oahu was 81.1°F. The maximum and minimum values were 80.6°F and 82.2°F respectively.

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

Precipitation total in July for Oahu is 0.2 in. It makes july one of the least rainy months of the year.

The average wind speed in July is 13.0 mph. It makes July the most windy month of the year for Oahu.

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 Oahu in July is 6.3 hours.