Average sea water temperature in September:
+85.3°F
| Minimum sea water temperature in September: | 88.0°F |
| Maximum sea water temperature in September: | 83.8°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 85.7°F. The highest and lowest sea temperatures during the month were 86.0°F and 85.3°F.
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| Mayaguez |
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Monthly sea water temperature in Mayaguez, °F
Which Puerto Rico resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Mayaguez | 85.7°F | 86.1°F |
| Ponce | 85.7°F | 86.3°F |
| Aguadilla | 85.5°F | 86.1°F |
| Isabella | 85.3°F | 85.9°F |
| Arecibo | 85.3°F | 85.8°F |
| San Juan | 85.1°F | 85.7°F |
Best time for vacation in Mayaguez
Mayaguez on a weather map
Places in Puerto Rico:
Name
°F
24 Hours Forecast
Mayaguez
Local time: 01:37
September 17, thursday
0300

82°F
W
5 mph
5 mph
0600

82°F
W
6 mph
6 mph
0900

82°F
W
7 mph
7 mph
1200

88°F
NW
12 mph
12 mph
1500

88°F
NW
13 mph
13 mph
1800

86°F
NW
8 mph
8 mph
2100

82°F
NW
9 mph
9 mph
September 18, friday
0000

82°F
W
6 mph
6 mph

























