The highest day temperature in July 2025 was 85°F. The lowest night temperature was 58°F. The average values for day and night temperatures during July were 80.7°F и 66.5°F respectivly.

The average sea surface temperature in July 2025 for Cairns was 76.4°F. The maximum and minimum values were 74.6°F and 79.4°F respectively.

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

Precipitation total in July for Cairns is 0.7 in. It makes july one of the least rainy months of the year.

The average wind speed in July is 9.1 mph. It makes July one of the most windy months of the year for Cairns.

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 Cairns in July is 6.9 hours.