26.08
wed
wed
Day
84°F
SW 22 mph
Precip.
15%
15%
Night
79°F
SW 19 mph
Precip.
23%
23%
27.08
thu
thu
Day
82°F
SW 16 mph
Precip.
21%
21%
Night
79°F
SW 19 mph
Precip.
10%
10%
28.08
fri
fri
Day
84°F
SW 18 mph
Precip.
37%
37%
Night
79°F
SW 19 mph
Precip.
20%
20%
29.08
sat
sat
Day
84°F
SW 21 mph
Precip.
18%
18%
Night
79°F
SW 20 mph
Precip.
8%
8%
30.08
sun
sun
Day
84°F
SW 18 mph
Precip.
13%
13%
Night
79°F
SW 17 mph
Precip.
11%
11%
31.08
mon
mon
Day
82°F
W 16 mph
Precip.
26%
26%
Night
81°F
SW 17 mph
Precip.
26%
26%
01.09
tue
tue
Day
84°F
SW 22 mph
Precip.
15%
15%
Night
79°F
SW 19 mph
Precip.
9%
9%
sea water
temperature
temperature
| Sao Luis |
monthly
weather
weather
| Sao Luis |
current
weather
weather
| Sao Luis |
14 days
forecast
forecast
| Sao Luis |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 83.3°F. The highest and lowest sea temperatures during the month were 84.0°F and 82.8°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 82.5°F. The highest and lowest sea temperatures during the month were 83.7°F and 81.7°F.
Air temperature in Sao Luis, °F
Precipitation total in Sao Luis, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Sao Luis
Sao Luis on a weather map
Places in Brazil:
Name
°F
24 Hours Forecast
Sao Luis
Local time: 10:53
August 26, wednesday
1200
84°F
SW
22 mph
22 mph
1500
82°F
SW
21 mph
21 mph
1800
81°F
SW
19 mph
19 mph
2100
79°F
SW
19 mph
19 mph
August 27, thursday
0000
79°F
SW
19 mph
19 mph
0300
81°F
SW
20 mph
20 mph
0600
81°F
SW
17 mph
17 mph
0900
81°F
W
17 mph
17 mph
