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

Sao Luis Sea Water Temperature

Current Sea Water Temperature:
+88.6°F
Maximum Sea Water Temperature in June: 90.4°F
Minimum Sea Water Temperature in June: 86.8°F
Average water temperature in June: 88.5°F

Sea Water Temperature for the Last 10 Days:

June 18 88.6°F June 13 88.6°F
June 17 88.4°F June 12 89.4°F
June 16 88.8°F June 11 88.4°F
June 15 89.2°F June 10 88.8°F
June 14 89.0°F June 09 88.8°F

When is the Warmest Sea for Sao Luis?

According to our data for the last three years for Sao Luis the highest average sea water temperature was in May, June and July.

Average Water Temperature by Month, °F

Sea Water Temperature in May

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Sao Luis was 88.3°F. The maximum and minimum values were 87.6°F and 89.2°F respectively.

Sea Water Temperature in June

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Sao Luis was 88.8°F. The maximum and minimum values were 88.4°F and 89.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Sao Luis was 87.4°F. The maximum and minimum values were 87.0°F and 88.2°F respectively.

Best Time to Visit Sao Luis
The most sunny months:
September 11 days
August 10 days
October 6 days
The most warm months:
September 92.5 °F
October 91.9 °F
August 91.6 °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

Sao Luis on the Weather Map

24 Hours Weather Forecast
Sao Luis
Local time: 17:35
18 jun, thursday
1800 84°F
SW
9 mph
2100 84°F
SW
9 mph
19 jun, friday
0000 82°F
SW
12 mph
0300 82°F
SW
13 mph
0600 82°F
SW
11 mph
0900 84°F
W
11 mph
1200 86°F
W
11 mph
1500 84°F
W
4 mph