The highest day temperature in July 2025 was 84°F. The lowest night temperature was 47°F. The average values for day and night temperatures during July were 69.6°F и 55.3°F respectivly.

The average sea surface temperature in July 2025 for Guaratuba was 67.7°F. The maximum and minimum values were 65.8°F and 69.0°F respectively.

You can expect various weather conditions during July. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in July for Guaratuba is 0.9 in. It makes july the least rainy month of the year.

The average wind speed in July is 2.9 mph. This value is relatively stable throughout the year.

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 Guaratuba in July is 5.4 hours.