Grand Isle Weather in June

What's the weather like in Grand Isle (Louisiana) in June 2025?

The climate in Grand Isle during June can be summarized as hot, humid and wet.

June is in the summer in Grand Isle and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 31°C (89°F), whilst at night 23°C (73°F) is normal.

Grand Isle weather averages (imperial / metric)
Daytime temperature 31.4°C 88.5°F
Nightly temperature 22.6°C 72.6°F
Average temperature 27°C 80.6°F
Daily sunshine 9.4 hrs
Avg rainfall 136 mm 5.3 ins
Rainy days 10 days
Sea temperature 28.2°C 82.8°F
Humidity 76%
Windspeed 11.5kph 7 mph

On average June is the 4th wettest month of the year in Grand Isle with around 136mm 5.3 inches of rain making it a wet time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.4 hours of sunshine per day.

June temperatures in Grand Isle

Grand Isle average temperature in June

June rainfall

Grand Isle average rain in June

June hourly sunshine

Grand Isle average rain in June

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Grand Isle in June 2025.

Other monthly averages

Best places to visit in June

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Grand Isle weather stats

Grand Isle weather statistics
Hottest month: July 32.1°C 89.8°F
Driest month: October 82mm 3.2ins
Sunniest month: April 9.7hrs
Coldest month: January 16.3°C 61.3°F
Wettest month: August 169mm 6.7ins
Map showing location of Grand Isle (29.23662, -89.98729) Grand Isle map pin © Google

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