Measurements:
°C
°F
CURRENT WEATHER
08:39
San Juan
88°F
NW 9 mph
Feels like: 96°F
Precip: 16%
World Resorts Puerto Rico San Juan Weather

7 Day Weather Forecast

08.19
wed
DAY
92°F
W 14 mph
precip
14%
NIGHT
84°F
NW 11 mph
precip
26%
08.20
thu
DAY
92°F
W 15 mph
precip
7%
NIGHT
84°F
W 14 mph
precip
20%
08.21
fri
DAY
90°F
W 17 mph
precip
6%
NIGHT
84°F
W 16 mph
precip
30%
08.22
sat
DAY
90°F
W 16 mph
precip
15%
NIGHT
84°F
W 14 mph
precip
26%
08.23
sun
DAY
90°F
W 16 mph
precip
8%
NIGHT
84°F
W 14 mph
precip
31%
08.24
mon
DAY
90°F
W 17 mph
precip
13%
NIGHT
88°F
W 15 mph
precip
17%
08.25
tue
DAY
90°F
W 15 mph
precip
15%
NIGHT
86°F
SW 14 mph
precip
20%

San Juan Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for San Juan was 29.0°F. The maximum and minimum values were 28.8°F and 29.2°F respectively.

San Juan on the Weather Map

Best Time to Visit San Juan
The most sunny months:
June 9 days
March 9 days
October 9 days
The most warm months:
September 91.1 °F
August 91.0 °F
July 90.6 °F
Warmest sea temperature:
October 88.8 °F
September 88.8 °F
August 87.8 °F
The most cold months:
February 84.0 °F
January 84.2 °F
March 84.7 °F
The most rainy months:
October 5 days
September 4 days
November 4 days
The most windy months:
July 12 mph
June 12 mph
February 12 mph
more details