If you plan to visit New Orleans in September, the weather is typically alright, with an average high temperature of +84°F during the day and approximately 6 sunny days. Expect some rainy, though, as there are typically 20 rainy days in the month and around 139 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+84°F
Avg. max. temperature
+55°F
Min.
+97°F
Max.
139 mm
Total precipitation
79%
Avg. humidity
2 m/s
Avg. wind
6 ☀️
Sunny Days
3 ⛅️
Cloudy
20 🌦
Rainy
Our opinion: New Orleans has OK weather in September.
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Average temperature in New Orleans in September
Here are the expected maximum, average and minimum temperatures in New Orleans for September based on the historical data.
Last Year
Historical Data
Going from a maximum of +95°F during the day to a minimum of +73°F during the night, the temperature in September averages around +90°F.
The average maximum temperature goes down 8% by the end of the month, compared with the beginning of the month, from +90°F to +88°F.
Is New Orleans warm or cold in September?
New Orleans is typically warm in September.
Maximum temperatures go down compared to the previous month from +88°F to +84°F. The minimum temperature also goes down from +77°F to +73°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in New Orleans:
Water temperature in New Orleans in September
Water in New Orleans in September is Warm. It varies from +78°F to +86°F, with an average of +82°F.This is almost similar to the air temperature, which averages +84°F.
In September, water temperatures are average relative to the rest of the year:
The warmest water temperatures in New Orleans are reached in August, when the average sea temperature rises to +86°F. The coldest water temperatures are in January, with an average of +56°F.
Can you swim in New Orleans in September?
You can absolutely swim in New Orleans in September, the water is warm (+82°F in average), similar to heated pools. Suitable for most people, including children and the elderly.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Bring your swimming suit, sunscreen and your favorite inflatable pink flamingo.
Climate in New Orleans in September
New Orleans weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+88°F
+84°F
+79°F
Min. temperature
+66°F
+55°F
+39°F
Max. temperature
+102°F
+97°F
+93°F
Rainfall
198 mm
139 mm
89 mm
Wind
1 m/s
2 m/s
2 m/s
Avg. water temperature
+86°F
+82°F
+76°F
Humidity
80%
79%
77%
Air pressure
1014 HPa
1014 HPa
1016 HPa
Sunny days
3
6
11
Cloudy days
2
3
7
Rainy days
26
20
13
Snowy days
0
0
0
September weather is still as ok as in August.It’s getting colder in September. From +88°F in the day, the average maximum temperature lowers to +84°F.As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 198 mm to 139 mm.It feels drier, as humidity decreases from 80% to 79%.Winds are stronger in comparison to August, going up from 1 m/s to 2 m/s on average.The good news is there are likely to be more sunny days in September, from 3 to 6.
But maybe it is worth considering traveling in October as the weather gets better.
Wind speed in New Orleans in September based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in New Orleans is gradually increasing during September, going from 2 m/s to 3 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in New Orleans based on historical data.
Last Year
Historical Data
Typically, there is a 67% chance of rain on an average day in September, with total rainfall of approximately 62 mm. The maximum amount of rainfall per day is around 7 mm, which is considered light rain.September is a pretty wet month with over 20 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
New Orleans wettest month is March, where a typical day has a 48% chance of precipitation and 390 mm of rainfall per day. November, on the other hand, is the driest month with a mere 40% chance of precipitation and 87 mm of rainfall per day.
How was the weather last September in New Orleans?
This is the weather in New Orleans in September 2023:
1 September
☁️
+90°F
2 September
🌧️
+87°F
3 September
🌧️
+90°F
4 September
🌧️
+88°F
5 September
☁️
+91°F
6 September
☀️
+93°F
7 September
☀️
+95°F
8 September
☁️
+89°F
9 September
☁️
+89°F
10 September
☀️
+90°F
11 September
☀️
+91°F
12 September
☀️
+91°F
13 September
☁️
+92°F
14 September
☁️
+89°F
15 September
☁️
+89°F
16 September
☁️
+91°F
17 September
☁️
+91°F
18 September
☀️
+89°F
19 September
☀️
+90°F
20 September
☁️
+87°F
21 September
☀️
+90°F
22 September
☁️
+89°F
23 September
☁️
+91°F
24 September
☁️
+91°F
25 September
☁️
+89°F
26 September
☁️
+89°F
27 September
☁️
+88°F
28 September
🌧️
+84°F
29 September
☁️
+86°F
30 September
☀️
+87°F
In September 2023 New Orleans had 9 sunny days, 17 cloudy days, and 4 rainy days. The average maximum temperature was +90°F, with an absolute maximum of +95°F and a minimum of +84°F. The average humidity was 72%, with a maximum of 100% and a minimum of 33%. The average wind speed was 2 m/s, with a maximum of 6 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how New Orleans climate has changed over the last 43 years.
The climate in New Orleans in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1983 (+73°F) and the highest in 2023 (+80°F). The driest year was 2000 with only 955 mm of rainfall, and the wettest year was 2022 with 58691 mm.
FAQ
Frequently asked questions about the weather in New Orleans in September:
Is September a good time to visit New Orleans?
It’s always a good time to visit New Orleans, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in New Orleans in September?
September is warm in New Orleans. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Can you swim in New Orleans in September?
Yes, you can swim in New Orleans in September, the water temperature averaging at +82°F. This temperature is considered warm and comfortable for most swimmers.
Is New Orleans rainy in September?
New Orleans is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in New Orleans in September?
Usually, it’s not very sunny in New Orleans in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in New Orleans, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
