World Resorts Puerto Rico San Juan Weather

San Juan Sea Temperature in May

Average sea water temperature in May:
+81.2°F
Minimum sea water temperature in May: 84.6°F
Maximum sea water temperature in May: 79.0°F

Daily sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 82.1°F. The highest and lowest sea temperatures during the month were 82.6°F and 81.5°F.

Monthly sea water temperature in San Juan, °F

Which Puerto Rico resorts have warmest sea in May?

Place name May 2026 May 2025
Ponce 83.6°F 83.5°F
Mayaguez 83.2°F 83.3°F
Aguadilla 83.0°F 83.0°F
Isabella 82.6°F 82.5°F
Arecibo 82.1°F 82.1°F
San Juan 82.1°F 81.7°F

Best time for vacation in San Juan

Sunniest months:
June 10 days
March 9 days
October 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 81.2 °F
Rainiest months:
October 5 days
September 4 days
November 4 days
Windiest months:
July 12.6 mph
February 11.9 mph
June 11.8 mph

San Juan on a weather map

Current weather
19:20
San Juan
+82°F
W 15 mph
Feels like: +86°F
Precip.: 100%
Places in Puerto Rico:
Name
°F
Aguadilla
+82°F
Arecibo
+81°F
Isabella
+81°F
Mayaguez
+82°F
Ponce
+82°F
San Juan
+82°F
24 Hours Forecast
San Juan
Local time: 19:20
May 16, saturday
2100
79°F
W
11 mph
May 17, sunday
0000
77°F
W
11 mph
0300
77°F
W
11 mph
0600
77°F
NW
10 mph
0900
82°F
W
12 mph
1200
84°F
W
16 mph
1500
84°F
W
17 mph
1800
81°F
W
15 mph
Units of measurement: °C / °F