World Resorts Puerto Rico San Juan Weather

San Juan Sea Temperature in August

Average sea water temperature in August:
+84.0°F
Minimum sea water temperature in August: 86.2°F
Maximum sea water temperature in August: 82.4°F

Daily sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 84.8°F. The highest and lowest sea temperatures during the month were 85.3°F and 84.2°F.

Monthly sea water temperature in San Juan, °F

Which Puerto Rico resorts have warmest sea in August?

Place name August 2025 August 2024
Ponce 85.4°F 86.1°F
Mayaguez 85.2°F 85.9°F
Aguadilla 85.0°F 85.7°F
San Juan 84.8°F 85.3°F
Isabella 84.7°F 85.4°F
Arecibo 84.6°F 85.2°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
07:27
San Juan
+77°F
W 10 mph
Feels like: +81°F
Precip.: 0%
Places in Puerto Rico:
Name
°F
Aguadilla
+72°F
Arecibo
+73°F
Isabella
+75°F
Mayaguez
+72°F
Ponce
+72°F
San Juan
+77°F
24 Hours Forecast
San Juan
Local time: 07:27
December 21, sunday
0900
79°F
W
12 mph
1200
82°F
W
15 mph
1500
82°F
W
15 mph
1800
79°F
W
12 mph
2100
79°F
W
11 mph
December 22, monday
0000
77°F
W
9 mph
0300
77°F
W
7 mph
0600
79°F
W
8 mph
Units of measurement: °C / °F