Sao Luis Weather: September
 |
Average Day Temperature: | 92.5°F |
|
Average Night Temperature: | 80.2°F |
|
Sea Water Temperature: | 86.2°F |
|
Number of Sunny Days: | 11 days |
| Sunshine Hours: | 12.1 - 12.1 hours | |
|
Number of Rainy Days: | 0 days |
| Precipitation Totals: | 0.1 in | |
| detailed information | ||
forecast
| Sao Luis |
Temperature
| Sao Luis |
Air Temperature in September, °F
The highest day temperature in September 2025 was 91°F. The lowest night temperature was 81°F. The average values for day and night temperatures during September were 87.2°F и 82.3°F respectivly.
Sao Luis Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Sao Luis was 86.1°F. The maximum and minimum values were 85.2°F and 87.4°F respectively.
Most of the days in September are cloudy but you can also expect sunny or gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Sao Luis is 0.1 in. It makes september the least rainy month of the year.
The average wind speed in September is 10.1 mph. It makes September one of the most windy months of the year for Sao Luis.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Sao Luis in September is 7.6 hours.
Sao Luis on the Weather Map
| Anchieta |  |
+72 |
| Armacao dos Buzios |  |
+72 |
| Buzios | |
+72 |
| Florianopolis |  |
+70 |
| Fortaleza | |
+84 |
| Itajai | |
+70 |
| Jericoacoara | |
+80 |
| Recife | |
+84 |
| Rio de Janeiro | |
+74 |
| Rio Grande |  |
+70 |
| Salvador | |
+82 |
| Santos | |
+74 |
| Sao Paulo | |
+68 |
| Unamar | |
+74 |
| Xangri-la | |
+68 |
| 0900 |  |
88°F | SW 14 mph |
| 1200 |  |
88°F | SW 16 mph |
| 1500 |  |
86°F | SW 14 mph |
| 1800 |  |
84°F | SW 13 mph |
| 2100 | |
84°F | SW 14 mph |
| 0000 | |
82°F | SW 13 mph |
| 0300 | |
82°F | SW 12 mph |
| 0600 |  |
84°F | W 14 mph |