World Resorts Puerto Rico San Juan Weather

San Juan Sea Temperature in April

Average sea water temperature in April:
+80.2°F
Minimum sea water temperature in April: 82.6°F
Maximum sea water temperature in April: 78.6°F

Daily sea water temperature in April, °F

Show year:
2026
2025
2024

The average sea water temperature in April of 2026 was 80.9°F. The highest and lowest sea temperatures during the month were 81.7°F and 80.4°F.

Monthly sea water temperature in San Juan, °F

Which Puerto Rico resorts have warmest sea in April?

Place name April 2026 April 2025
Ponce 82.0°F 82.0°F
Mayaguez 81.6°F 81.7°F
Aguadilla 81.5°F 81.4°F
Isabella 81.1°F 81.3°F
Arecibo 81.0°F 81.1°F
San Juan 80.9°F 80.8°F

Best time for vacation in San Juan

Sunniest months:
June 9 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
June 11.9 mph
February 11.9 mph

San Juan on a weather map

Current weather
14:12
San Juan
+86°F
W 19 mph
Feels like: +93°F
Precip.: 4%
Places in Puerto Rico:
Name
°F
Aguadilla
+84°F
Arecibo
+88°F
Isabella
+82°F
Mayaguez
+86°F
Ponce
+86°F
San Juan
+86°F
24 Hours Forecast
San Juan
Local time: 14:12
July 17, friday
1500
86°F
W
19 mph
1800
84°F
W
17 mph
2100
81°F
W
14 mph
July 18, saturday
0000
79°F
W
12 mph
0300
79°F
W
12 mph
0600
79°F
W
11 mph
0900
82°F
W
15 mph
1200
86°F
W
19 mph
Units of measurement: °C / °F