17.05
sun
sun
Day
84°F
SW 9 mph
Precip.
100%
100%
Night
79°F
W 11 mph
Precip.
100%
100%
18.05
mon
mon
Day
82°F
W 14 mph
Precip.
100%
100%
Night
79°F
W 11 mph
Precip.
100%
100%
19.05
tue
tue
Day
82°F
SW 12 mph
Precip.
100%
100%
Night
79°F
SW 11 mph
Precip.
0%
0%
20.05
wed
wed
Day
84°F
SW 12 mph
Precip.
100%
100%
Night
79°F
SW 12 mph
Precip.
0%
0%
21.05
thu
thu
Day
82°F
W 14 mph
Precip.
100%
100%
Night
79°F
W 12 mph
Precip.
100%
100%
22.05
fri
fri
Day
84°F
SW 11 mph
Precip.
100%
100%
Night
79°F
SW 11 mph
Precip.
0%
0%
23.05
sat
sat
Day
82°F
SW 11 mph
Precip.
100%
100%
Night
79°F
W 8 mph
Precip.
0%
0%
24.05
sun
sun
Day
82°F
W 12 mph
Precip.
100%
100%
Night
79°F
SW 11 mph
Precip.
0%
0%
25.05
mon
mon
Day
82°F
W 12 mph
Precip.
100%
100%
Night
79°F
SW 9 mph
Precip.
0%
0%
26.05
tue
tue
Day
84°F
NW 8 mph
Precip.
100%
100%
Night
79°F
SW 10 mph
Precip.
100%
100%
27.05
wed
wed
Day
84°F
W 9 mph
Precip.
100%
100%
Night
79°F
SW 9 mph
Precip.
0%
0%
28.05
thu
thu
Day
82°F
W 11 mph
Precip.
100%
100%
Night
77°F
W 9 mph
Precip.
0%
0%
29.05
fri
fri
Day
82°F
W 11 mph
Precip.
100%
100%
Night
79°F
W 11 mph
Precip.
100%
100%
sea water
temperature
temperature
| Sao Luis |
monthly
weather
weather
| Sao Luis |
current
weather
weather
| Sao Luis |
7 days
forecast
forecast
| Sao Luis |
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 84.3°F. The highest and lowest sea temperatures during the month were 84.9°F and 83.8°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: 01:52
May 17, sunday
0300
79°F
SW
7 mph
7 mph
0600
79°F
SW
8 mph
8 mph
0900
81°F
SW
7 mph
7 mph
1200
84°F
SW
9 mph
9 mph
1500
82°F
SW
12 mph
12 mph
1800
79°F
SW
11 mph
11 mph
2100
77°F
W
10 mph
10 mph
May 18, monday
0000
79°F
W
11 mph
11 mph
