07.08
fri
fri
Day
88°F
W 16 mph
Precip.
4%
4%
Night
79°F
W 11 mph
Precip.
13%
13%
08.08
sat
sat
Day
88°F
W 16 mph
Precip.
4%
4%
Night
79°F
W 11 mph
Precip.
20%
20%
09.08
sun
sun
Day
88°F
W 19 mph
Precip.
5%
5%
Night
81°F
W 13 mph
Precip.
23%
23%
10.08
mon
mon
Day
88°F
W 18 mph
Precip.
4%
4%
Night
81°F
W 10 mph
Precip.
22%
22%
11.08
tue
tue
Day
86°F
W 17 mph
Precip.
13%
13%
Night
79°F
NW 9 mph
Precip.
21%
21%
12.08
wed
wed
Day
88°F
W 16 mph
Precip.
8%
8%
Night
81°F
NW 10 mph
Precip.
31%
31%
13.08
thu
thu
Day
88°F
W 19 mph
Precip.
10%
10%
Night
82°F
W 17 mph
Precip.
8%
8%
14.08
fri
fri
Day
86°F
W 21 mph
Precip.
12%
12%
Night
81°F
W 17 mph
Precip.
25%
25%
15.08
sat
sat
Day
88°F
W 21 mph
Precip.
4%
4%
Night
81°F
W 16 mph
Precip.
32%
32%
16.08
sun
sun
Day
86°F
W 17 mph
Precip.
8%
8%
Night
79°F
W 12 mph
Precip.
15%
15%
17.08
mon
mon
Day
88°F
W 16 mph
Precip.
3%
3%
Night
79°F
W 9 mph
Precip.
28%
28%
18.08
tue
tue
Day
88°F
W 16 mph
Precip.
5%
5%
Night
81°F
NW 7 mph
Precip.
54%
54%
19.08
wed
wed
Day
90°F
W 14 mph
Precip.
4%
4%
Night
81°F
NW 9 mph
Precip.
16%
16%
20.08
thu
thu
Day
90°F
W 16 mph
Precip.
8%
8%
Night
81°F
W 11 mph
Precip.
26%
26%
sea water
temperature
temperature
| San Juan |
monthly
weather
weather
| San Juan |
current
weather
weather
| San Juan |
7 days
forecast
forecast
| San Juan |
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.
Air temperature in San Juan, °F
Precipitation total in San Juan, in.
* Charts above show average data for the last 3 years.
Best time for vacation in San Juan
San Juan on a weather map
Places in Puerto Rico:
Name
°F
24 Hours Forecast
San Juan
Local time: 17:25
August 07, friday
1800
84°F
W
15 mph
15 mph
2100
81°F
W
11 mph
11 mph
August 08, saturday
0000
79°F
W
11 mph
11 mph
0300
79°F
W
12 mph
12 mph
0600
77°F
NW
8 mph
8 mph
0900
84°F
W
13 mph
13 mph
1200
88°F
W
16 mph
16 mph
1500
86°F
W
17 mph
17 mph
