The highest day temperature in July 2026 was 85°F. The lowest night temperature was 58°F. The average values for day and night temperatures during July were 75.7°F и 63.3°F respectivly.

The average sea surface temperature in July 2026 for Saint Malo was 69.9°F. The maximum and minimum values were 67.8°F and 72.2°F respectively.

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

Precipitation total in July for Saint Malo is 1.5 in. It makes july the least rainy month of the year.

The average wind speed in July is 10.5 mph. It makes July one of the most windless months of the year for Saint Malo.

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 Saint Malo in July is 9.7 hours.