Louisiana Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Louisiana, the United States of America in September.

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New Orleans Baton Rouge Houma Metairie

Planning a getaway to Louisiana, the United States of America this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Louisiana in September

Louisiana, the United States of America is a region in the United States of America. September in Louisiana generally has very warm temperatures, with precipitation levels ranging from moderate to heavy.

Temperatures

You can expect very warm maximum daytime temperatures of around 31°C (88°F) and nighttime temperatures around 23°C (73°F) in New Orleans. The temperatures mentioned for both day and night are typical averages. However some days might get even hotter. It's best to stay prepared by wearing cloths suitable for the warmth.

To explore the conditions in Louisiana, the United States of America in more detail, check the map below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Shreveport with an average of 69 mm (2.7 in) to heavy rainfall in Galliano with 182 mm (7.2 in).

Average sunshine

Sunshine is generally plentiful throughout many areas. New Orleans enjoys about 227 hours of sunlight, ideal for those seeking sunny weather.

Explore Louisiana by month

Pick a month to see the average temperature, rainfall and sunshine in Louisiana — and find the best time to visit. (based on New Orleans)

January17°C (63°F) February18°C (64°F) March23°C (73°F) April26°C (79°F) May29°C (84°F) June32°C (90°F) This monthJuly33°C (91°F) August33°C (91°F) September31°C (88°F) October27°C (81°F) November21°C (70°F) December19°C (66°F)
Best Time to Visit Louisiana →

Best Places to Visit in Louisiana in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Louisiana.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Louisiana

What is the weather like in September for some of the most popular destinations in Louisiana, the United States of America?

Temperature range in Louisiana (September)

Precipitation variation in Louisiana (September)

New Orleans

In September New Orleans generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (73°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
33°C (91°F)
31°C (88°F)
27°C (81°F)
Min temperature
25°C (77°F)
23°C (73°F)
17°C (63°F)
Monthly sun hours
251 hours
227 hours
241 hours
Monthly rainfall
219 mm (8.6 in)
155 mm (6.1 in)
98 mm (3.9 in)
Monthly rainy days
19 days
13 days
8 days
Weather conditions
poor
tolerable
perfect
Climate in New Orleans →

Baton Rouge

In September Baton Rouge generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 21°C (70°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
33°C (91°F)
31°C (88°F)
27°C (81°F)
Min temperature
23°C (73°F)
21°C (70°F)
14°C (57°F)
Monthly sun hours
270 hours
240 hours
260 hours
Monthly rainfall
230 mm (9.1 in)
135 mm (5.3 in)
111 mm (4.4 in)
Monthly rainy days
17 days
12 days
8 days
Weather conditions
poor
tolerable
pleasant
Climate in Baton Rouge →

Houma

In September Houma generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 22°C (72°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
33°C (91°F)
31°C (88°F)
27°C (81°F)
Min temperature
24°C (75°F)
22°C (72°F)
15°C (59°F)
Monthly sun hours
251 hours
227 hours
241 hours
Monthly rainfall
257 mm (10 in)
179 mm (7 in)
111 mm (4.4 in)
Monthly rainy days
20 days
15 days
7 days
Weather conditions
poor
tolerable
pleasant
Climate in Houma →

Metairie

In September Metairie generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 24°C (75°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
33°C (91°F)
31°C (88°F)
27°C (81°F)
Min temperature
26°C (79°F)
24°C (75°F)
18°C (64°F)
Monthly sun hours
251 hours
227 hours
241 hours
Monthly rainfall
194 mm (7.6 in)
146 mm (5.7 in)
95 mm (3.7 in)
Monthly rainy days
18 days
13 days
8 days
Weather conditions
unpleasant
tolerable
perfect
Climate in Metairie →

Slidell

In September Slidell generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 21°C (70°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« August
September
October »
August
September
October
Max temperature
33°C (91°F)
31°C (88°F)
27°C (81°F)
Min temperature
23°C (73°F)
21°C (70°F)
15°C (59°F)
Monthly sun hours
251 hours
227 hours
241 hours
Monthly rainfall
197 mm (7.8 in)
129 mm (5.1 in)
88 mm (3.5 in)
Monthly rainy days
17 days
12 days
7 days
Weather conditions
unpleasant
tolerable
perfect
Climate in Slidell →

Is your destination not in the list? Have a look at all destinations in Louisiana, in the United States of America.

Popular cities in September

Day & night temperatures, rainfall and average weather in Louisiana in September.

City Weather Day temp Night temp Rainfall
New Orleans 31°C (88°F) 23°C (73°F) 155 mm (6.1 in)
Baton Rouge 31°C (88°F) 21°C (70°F) 135 mm (5.3 in)
Houma 31°C (88°F) 22°C (72°F) 179 mm (7 in)
Metairie 31°C (88°F) 24°C (75°F) 146 mm (5.7 in)
Slidell 31°C (88°F) 21°C (70°F) 129 mm (5.1 in)
Hammond 32°C (90°F) 20°C (68°F) 134 mm (5.3 in)

Louisiana weather in September: frequently asked questions

What is the weather like in Louisiana, the United States of America in September?

Louisiana, the United States of America typically experiences unpleasant weather in September, part of the season. Daytime highs in New Orleans average around 31°C (88°F), and temperatures drop to about 23°C (73°F) at night.

What is the average temperature in Louisiana, the United States of America in September?

Average temperatures in Louisiana, the United States of America during September range from a nighttime low near 23°C (73°F) to a daytime high around 31°C (88°F) in New Orleans.

Does Louisiana, the United States of America get a lot of rain in September?

Louisiana, the United States of America sees substantial rainfall in September. New Orleans typically averages about 155 mm (6.1 in), a mix of wet and dry days, but bring an umbrella.

Is September a Good Time to Visit Louisiana, the United States of America?

In our opinion, September is a good time to visit Louisiana, the United States of America with overall tolerable weather in New Orleans. However, the weather conditions may vary depending on your destination.

On average, the best time to visit Louisiana, the United States of America is in October and November with generally perfect weather in New Orleans. The weather in July and August, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Louisiana.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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