Average sea water temperature in September:
+84.8°F
| Minimum sea water temperature in September: | 87.3°F |
| Maximum sea water temperature in September: | 81.5°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 85.8°F. The highest and lowest sea temperatures during the month were 86.2°F and 85.3°F.
Monthly sea water temperature in Arecibo, °F
Which Puerto Rico resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Ponce | 86.3°F | 87.0°F |
| Aguadilla | 86.1°F | 86.6°F |
| Mayaguez | 86.1°F | 86.8°F |
| Isabella | 85.9°F | 86.4°F |
| Arecibo | 85.8°F | 86.3°F |
| San Juan | 85.7°F | 86.4°F |
Best time for vacation in Arecibo
Arecibo on a weather map
Places in Puerto Rico:
Name
°F
24 Hours Forecast
Arecibo
Local time: 23:21
January 10, saturday
0000

72°F
W
6 mph
6 mph
0300

72°F
W
7 mph
7 mph
0600

73°F
W
7 mph
7 mph
0900

77°F
W
11 mph
11 mph
1200

84°F
SW
16 mph
16 mph
1500

82°F
SW
17 mph
17 mph
1800

79°F
W
14 mph
14 mph
2100

75°F
W
11 mph
11 mph


























