Current sea water temperature:
+83.1°F
| Minimum sea water temperature in September: | 83.8°F |
| Maximum sea water temperature in September: | 81.3°F |
| Average sea water temperature in September: | 82.6°F |
| more information | |
14 days
forecast
forecast
| Sao Luis |
monthly
weather
weather
| Sao Luis |
Sea water temperature for the last 10 days:
| September 1 | 83.1°F | August 27 | 83.5°F |
| August 31 | 83.5°F | August 26 | 82.8°F |
| August 30 | 82.8°F | August 25 | 83.1°F |
| August 29 | 83.5°F | August 24 | 83.1°F |
| August 28 | 83.5°F | August 23 | 82.8°F |
Monthly sea water temperature, °F
When is the warmest sea in Sao Luis?
Based on the data about daily sea water temperature for the last three years the warmest sea in Sao Luis was noticed in May, June and July.
Monthly Sea Temperatures in Sao Luis, °F
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 84.4°F. The highest and lowest sea temperatures during the month were 85.3°F and 83.8°F.
Sea water temperature in June, °F
Show year:
2026
2025
2024
The average sea water temperature in June of 2026 was 84.8°F. The highest and lowest sea temperatures during the month were 85.5°F and 84.0°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 84.2°F. The highest and lowest sea temperatures during the month were 85.3°F and 83.3°F.
current
weather
weather
| Sao Luis |
weather in
September
September
| Sao Luis |
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: 18:50
September 01, tuesday
2100

79°F
SW
17 mph
17 mph
September 02, wednesday
0000

79°F
SW
18 mph
18 mph
0300

79°F
SW
19 mph
19 mph
0600

81°F
SW
19 mph
19 mph
0900

81°F
SW
16 mph
16 mph
1200

82°F
SW
17 mph
17 mph
1500

82°F
SW
19 mph
19 mph
1800

79°F
SW
19 mph
19 mph




























