Average monthly water temperature in Gretna, the United States of America
On this page you find the mean water temperature over the year in Gretna (Louisiana), the United States of America. Get insights into the water temperature fluctuations and discover what they mean for visitors.
Water temperatures in Gretna remain warm year-round, perfect for aquatic activities. The warmest month, June, has an average temperature of 28°C (82°F).
The coolest water temperature month is January, averaging 20°C (68°F). Whether you’re swimming or just enjoying the water, Gretna offers ideal conditions year-round.
Gretna Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Gretna - and find the best time to visit.
Gretna 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Gretna climate overview or explore weather in the United States of America.
Popular this month
Where to go in August - average daytime high across popular destinations.
Kissimmee
33°C (91°F) Orlando33°C (91°F) Miami Beach32°C (90°F) Destin32°C (90°F) New York City
29°C (84°F) Big Bear Lake
27°C (81°F) Los Angeles
24°C (75°F) San Francisco22°C (72°F) 
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