Average Sunshine in Louisiana for September

Number of Sunny Days

In the table below, the average number of Sunny Days for a city in Louisiana is the total days this month when the sky is mostly clear. This includes the days when cloud covers up to 30% of the sky during daylight hours.

Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime. The rest of the days during September are mainly overcast, with at least 80% cloud cover.

Total Days With Sun is a sum of the Sunny plus Partly Sunny days. All the numbers are averages, made from years of weather watching, for total days in the month.

Days of sunshine in September
City Sunny Partly Sunny Total Days
With Sun
Baton Rouge 9 11 20
Lake Charles 10 11 21
New Orleans 10 11 21
Shreveport 11 9 20

Amount of Sun

Here's another way to look at how much sunshine a city gets. The % Sun number measures the percentage of time between sunrise and sunset that sunshine reaches the ground. Again, these amounts are monthly averages based on many years of weather observations.

Percent sunshine for September
City % Sun
Lake Charles 78
New Orleans 61
Shreveport 70

National Climatic Data Center. Comparative Climatic Data.

Louisiana Sunshine
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