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Sea Temperature in Grand Isle in September
Complete information on the sea temperature range in the Gulf of Mexico (Gulf of America) in Grand Isle in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Grand Isle. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Water Temperature Range in Grand Isle in September
77°F
MINIMUN
83°F
AVERAGE
90°F
MAXIMUM
Historical Data of Water Temperature in September in Grand Isle
Water Temperature Chart for Gulf of Mexico (Gulf of America) in Grand Isle in September
Sea Temperature Table in Grand Isle in September Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Sep 1 | 84°C | 84°C | 86°C | 85°C |
| Sep 2 | 84°C | 84°C | 86°C | 85°C |
| Sep 3 | 84°C | 84°C | 84°C | 84°C |
| Sep 4 | 84°C | 84°C | 84°C | 84°C |
| Sep 5 | 86°C | 84°C | 84°C | 85°C |
| Sep 6 | 86°C | 86°C | 86°C | 86°C |
| Sep 7 | 86°C | 86°C | 86°C | 85°C |
| Sep 8 | 86°C | 86°C | 86°C | 86°C |
| Sep 9 | 86°C | 84°C | 84°C | 84°C |
| Sep 10 | 84°C | 84°C | 84°C | 84°C |
| Sep 11 | 84°C | 86°C | 84°C | 84°C |
| Sep 12 | 84°C | 84°C | 82°C | 83°C |
| Sep 13 | 84°C | 86°C | 82°C | 83°C |
| Sep 14 | 84°C | 84°C | 81°C | 82°C |
| Sep 15 | 84°C | 84°C | 81°C | 82°C |
| Sep 16 | 82°C | 84°C | 81°C | 82°C |
| Sep 17 | 82°C | 82°C | 82°C | 82°C |
| Sep 18 | 82°C | 82°C | 82°C | 82°C |
| Sep 19 | 82°C | 82°C | 82°C | 82°C |
| Sep 20 | 82°C | 82°C | 82°C | 82°C |
| Sep 21 | 82°C | 82°C | 84°C | 83°C |
| Sep 22 | 82°C | 82°C | 84°C | 83°C |
| Sep 23 | 81°C | 81°C | 84°C | 82°C |
| Sep 24 | 81°C | 81°C | 84°C | 82°C |
| Sep 25 | 79°C | 82°C | 84°C | 82°C |
| Sep 26 | 81°C | 79°C | 84°C | 82°C |
| Sep 27 | 81°C | 79°C | 84°C | 82°C |
| Sep 28 | 81°C | 81°C | 84°C | 82°C |
| Sep 29 | 81°C | 81°C | 84°C | 82°C |
Grand Isle Climate and Swimming Opportunities in September
88°F
Average Day Air Temperature
72°F
Average Night Air Temperature
6 in
Precipitation Amount per Month
10 days
Number of Rainy Days
12 hrs
Daylight
per Day
7 hrs
Sunshine
per Day
8 mph
Average Wind Speed
75%
Average
humidity
Grand Isle lies within the Louisiana in United States. The average daytime temperature in Grand Isle in September is 87°F (31°C), while the nighttime average is 71°F (22°C). There are typically 10 rainy days during the month, with a total precipitation of 5.8 inches (147 mm). The daylight duration in September in Grand Isle is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in September is 8 mph (13 km/h), and the humidity level is around 75%.
The water temperature in Grand Isle in September ranges from 81°F to 84°F (27°C to 29°C). At the beginning of the month, the average temperature is around 84°F (29°C), shifting to 82°F (28°C) by mid-September and reaching 82°F (28°C) in the last ten days. Overall, the average sea temperature in Grand Isle for September is 82°F (28°C). The water is almost like a bath, perfect for those who prefer very warm conditions. However, it may not be as refreshing on extremely hot days.
Sea Temperature in September in Nearby Cities
Frequently Asked Questions About Water Temperatures in September in Grand Isle
What is the sea temperature in Grand Isle in September?
The water temperature in the Gulf of Mexico (Gulf of America) in Grand Isle in September ranges from 81°F to 84°F (27°C to 29°C).
Is it possible to swim in the Gulf of Mexico (Gulf of America) in Grand Isle in September?
The average sea temperature in Grand Isle in September is 82°F (28°C), and the air temperature is 87°F (31°C), so the water is almost like a bath, perfect for those who prefer very warm conditions. However, it may not be as refreshing on extremely hot days.