Measurements:
°C
°F
CURRENT WEATHER
17:55
Sao Luis
84°F
SW 16 mph
Feels like: 90°F
Precip: 9%
World Resorts Brazil Sao Luis Weather

7 Day Weather Forecast

09.08
tue
DAY
90°F
SW 14 mph
precip
5%
NIGHT
82°F
SW 16 mph
precip
11%
09.09
wed
DAY
90°F
SW 20 mph
precip
4%
NIGHT
84°F
SW 19 mph
precip
23%
09.10
thu
DAY
88°F
SW 19 mph
precip
25%
NIGHT
84°F
SW 17 mph
precip
10%
09.11
fri
DAY
90°F
SW 21 mph
precip
12%
NIGHT
84°F
SW 17 mph
precip
19%
09.12
sat
DAY
88°F
SW 21 mph
precip
5%
NIGHT
82°F
SW 19 mph
precip
8%
09.13
sun
DAY
88°F
SW 21 mph
precip
6%
NIGHT
82°F
SW 20 mph
precip
8%
09.14
mon
DAY
88°F
SW 20 mph
precip
14%
NIGHT
82°F
SW 19 mph
precip
9%

Sao Luis Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Sao Luis was 28.0°F. The maximum and minimum values were 27.6°F and 28.7°F respectively.

Sao Luis on the Weather Map

Best Time to Visit Sao Luis
The most sunny months:
September 11 days
August 9 days
October 6 days
The most warm months:
September 92.5 °F
October 91.9 °F
August 90.9 °F
Warmest sea temperature:
May 88.6 °F
June 88.5 °F
July 88.0 °F
The most cold months:
March 85.6 °F
February 86.1 °F
January 86.6 °F
The most rainy months:
March 19 days
April 16 days
February 12 days
The most windy months:
October 10 mph
September 10 mph
November 9 mph
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