Weather in Grand Isle: June
 |
Average day temperature: | 83.7°F |
| Average night temperature: | 81.1°F | |
 |
Sea water temperature: | 85.0°F |
 |
Number of sunny days: | 9 days |
| Day length: | 13.9 - 14.0 hours | |
 |
Number of rainy days: | 4 days |
| Precipitation totals: | 2.0 in. | |
| more information | ||
forecast
| Grand Isle |
temperature
| Grand Isle |
Air temperature in June, °F
The highest day temperature during June of 2025 was 86°F. At the same time the lowest night temperature was 78°F. Daily and nightly averages during June were 83.8°F and 82.2°F.
Sea water temperature in Grand Isle in June, °F
The average sea water temperature in June of 2025 was 86.2°F. The highest and lowest sea temperatures during the month were 89.1°F and 83.5°F.
Mostly all days in June are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in June, in.
Precipitation total value in Grand Isle in June is 2.0 in. Other months of the year show relatively similar values.
The average wind speed value in June is 10.6 mph It makes June one of the least windy months 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 June is: 8.0.
Best time for vacation in Grand Isle
Grand Isle on a weather map
14 mph
12 mph
14 mph
10 mph
12 mph
12 mph
11 mph
9 mph
