Weather in Grand Isle: July
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Average day temperature: | 85.1°F |
| Average night temperature: | 82.6°F | |
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Sea water temperature: | 86.8°F |
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Number of sunny days: | 5 days |
| Day length: | 13.5 - 14.0 hours | |
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Number of rainy days: | 6 days |
| Precipitation totals: | 2.7 in. | |
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forecast
| Grand Isle |
temperature
| Grand Isle |
Air temperature in July, °F
The highest day temperature during July of 2023 was 90°F. At the same time the lowest night temperature was 80°F. Day and night temperature averages during July were 87.5°F and 84.3°F.
Sea water temperature in Grand Isle in July, °F
The average sea water temperature in July of 2023 was 89.0°F. The highest and lowest sea temperatures during the month were 91.2°F and 86.9°F.
Mostly all days in July are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in July, in.
Precipitation total value in Grand Isle in July is 2.7 in. Other months of the year show relatively similar values.
The average wind speed value in July is 8.7 mph It makes July lest windy month of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in July is: 6.8.
Best time for vacation in Grand Isle
Grand Isle on a weather map
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