World Resorts Puerto Rico San Juan Weather

San Juan Sea Temperature in January

Average sea water temperature in January:
+80.5°F
Minimum sea water temperature in January: 82.6°F
Maximum sea water temperature in January: 78.3°F

Daily sea water temperature in January, °F

Show year:
2026
2025
2024

The average sea water temperature in January of 2026 was 81.5°F. The highest and lowest sea temperatures during the month were 81.9°F and 80.8°F.

Monthly sea water temperature in San Juan, °F

Which Puerto Rico resorts have warmest sea in January?

Place name January 2026 January 2025
Aguadilla 81.5°F 81.9°F
San Juan 81.5°F 81.5°F
Arecibo 81.3°F 81.4°F
Isabella 81.3°F 81.6°F
Mayaguez 81.3°F 81.8°F
Ponce 81.2°F 81.8°F

Best time for vacation in San Juan

Sunniest months:
June 10 days
March 10 days
April 9 days
Warmest months:
September 87.0 °F
August 86.9 °F
July 86.5 °F
Warmest sea temp:
October 84.9 °F
September 84.9 °F
August 84.0 °F
Coldest months:
February 80.6 °F
January 80.8 °F
March 81.3 °F
Rainiest months:
October 5 days
September 4 days
November 4 days
Windiest months:
July 12.6 mph
February 12.0 mph
June 11.8 mph

San Juan on a weather map

Current weather
14:17
San Juan
+81°F
W 14 mph
Feels like: +86°F
Precip.: 0%
Places in Puerto Rico:
Name
°F
Aguadilla
+86°F
Arecibo
+79°F
Isabella
+79°F
Mayaguez
+82°F
Ponce
+84°F
San Juan
+81°F
24 Hours Forecast
San Juan
Local time: 14:17
February 04, wednesday
1500
81°F
W
14 mph
1800
79°F
W
13 mph
2100
77°F
W
11 mph
February 05, thursday
0000
77°F
W
8 mph
0300
75°F
NW
5 mph
0600
75°F
NW
4 mph
0900
77°F
W
5 mph
1200
82°F
W
8 mph
Units of measurement: °C / °F