Gretna Weather in September

September in Gretna sees daytime temperatures around 31°C (88°F) and lows of 23°C (73°F) at night. With around 155 mm (6.1 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Gretna in September

Records from the past 30 years suggest around 13 days of rain, with 155 mm (6.1 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Gretna in September

Daytime temperatures in Gretna reach 31°C (88°F) in September, dropping to 23°C (73°F) at night. Mornings and evenings are often more comfortable than the peak afternoon hours. At 23°C (73°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.

Sunshine in Gretna in September

Enjoy a sunny month with about 227 hours of sunshine, the clear skies make Gretna even more beautiful.

Wind Speed in Gretna in September

Average wind speeds reach 3 m/s (6 knots) in September, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in September

With water at 28°C (82°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.

If your ideal day consists of dry skies and pleasant temperatures, November typically offers the best circumstances for Gretna.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Gretna's climate page.

Gretna Temperature in September

Min Temperature 23°C (73°F)  

Max Temperature 31°C (88°F)  

Water Temperature 28°C (82°F) *  

Chance of Rain 45%  

Precipitation 155 mm (6.1 in)  

Rainy days 13 days  

Humidity 78% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 227 hours *  

Percentage Sunshine 62% *  

* Data from: New Orleans, the United States of America (20 KM, 12 Miles).

What to Wear in Gretna in September

Warm but pleasant conditions in Gretna in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Expect water temperatures of around 28°C (82°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Gretna in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

8/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Gretna's climate page.

More climate data for Gretna

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Gretna climate overview or explore weather in the United States of America.