Avg High
New Orleans in September
Verdict
In New Orleans, September has a distinct autumn feel. As the season moves along, the air is cooling down. You can usually expect a warm month that feels variable day to day. It often has a hot and tropical, with heavy bursts of rain breaking the heat feel, especially for outdoor plans.
It suits travellers who want straightforward weather for sightseeing and day trips. Sun exposure can add up quickly around the middle of the day.
Avg Low
Rain
Daylight
12h
What to expect
- Daytime feel - Heat-forward afternoons that stay fairly consistent through the day. It can feel warmer than expected in the sun.
- Rain pattern - Very wet. Waterproof footwear becomes genuinely useful. Outdoor plans benefit from flexibility.
- Sun exposure - Midday sun is intense. You can burn surprisingly quickly, so sun protection is strongly recommended. Even short walks can add up.
- Breezes - A steady breeze, and gusts can catch you in exposed spots. Sheltered streets can feel fine, but open areas feel very different.
September in context
How it compares to the rest of the year in New Orleans.
Hottest (avg)
#4 / 12
Wettest (avg)
#4 / 12
Daylight Hours
#6 / 12
Windiest (avg)
#9 / 12
Highest UV
#6 / 12
Most Humid
#4 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 12.3 hours
- UV index (max)
- 8
- Typical sun hours
- 05:44 – 18:04
Rain & Snow
- Total
-
- Rainy days
- 17
- Cloud cover
- 45%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 78%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is September a good time to visit New Orleans?
Typical September days in New Orleans reach highs of 29°C (84°F) with nights around 24°C (75°F). It usually feels hot by day and warm after dark. Overall, September sits in the middle of the New Orleans climate range.
What are temperatures like in September?
Daytime temperatures in September typically peak near 29°C (84°F), while nights drop to around 24°C (75°F). Expect hot afternoons and warm evenings.
How much does it rain in September?
Rainfall in September averages 139 mm (5.5 in) across roughly 17 days. Overall it is a very wet time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in September?
You can expect about 12 hours of daylight in September. Sunrise is typically around 05:44 and sunset near 18:04. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in September?
UV levels frequently reach very high levels (around 8), so strong sun protection is essential, especially around midday.
Is it windy in September?
In September, average wind speeds are around 12 km/h (7 mph), with gusts on the windiest days reaching about 44 km/h (27 mph). On the ground, it is it often feels breezy, especially in more exposed spots or along the coast.