World Resorts Puerto Rico San Juan Weather

San Juan 14 Days Forecast

27.08
thu
Day
86°F
W 14 mph
Precip.
19%
Night
82°F
W 14 mph
Precip.
26%
28.08
fri
Day
84°F
W 17 mph
Precip.
26%
Night
82°F
W 14 mph
Precip.
22%
29.08
sat
Day
88°F
W 17 mph
Precip.
16%
Night
82°F
W 16 mph
Precip.
33%
30.08
sun
Day
84°F
SW 19 mph
Precip.
59%
Night
82°F
W 14 mph
Precip.
29%
31.08
mon
Day
86°F
NW 11 mph
Precip.
15%
Night
79°F
NW 7 mph
Precip.
20%
01.09
tue
Day
84°F
NW 11 mph
Precip.
51%
Night
79°F
NW 6 mph
Precip.
73%
02.09
wed
Day
88°F
W 13 mph
Precip.
15%
Night
81°F
W 12 mph
Precip.
21%
03.09
thu
Day
86°F
W 13 mph
Precip.
13%
Night
82°F
W 11 mph
Precip.
23%
04.09
fri
Day
88°F
W 14 mph
Precip.
20%
Night
82°F
NW 10 mph
Precip.
14%
05.09
sat
Day
88°F
W 13 mph
Precip.
13%
Night
82°F
NW 9 mph
Precip.
13%
06.09
sun
Day
88°F
W 14 mph
Precip.
21%
Night
82°F
NW 9 mph
Precip.
19%
07.09
mon
Day
88°F
W 14 mph
Precip.
17%
Night
81°F
NW 11 mph
Precip.
11%
08.09
tue
Day
86°F
W 15 mph
Precip.
14%
Night
81°F
W 11 mph
Precip.
22%
09.09
wed
Day
86°F
W 14 mph
Precip.
16%
Night
82°F
W 12 mph
Precip.
20%

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 84.4°F. The highest and lowest sea temperatures during the month were 85.3°F and 83.8°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 85.7°F. The highest and lowest sea temperatures during the month were 86.4°F and 85.3°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

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
August 11.9 mph
June 11.9 mph

San Juan on a weather map

Current weather
23:20
San Juan
+82°F
W 14 mph
Feels like: +88°F
Precip.: 26%
Places in Puerto Rico:
Name
°F
Aguadilla
+82°F
Arecibo
+79°F
Isabella
+79°F
Mayaguez
+81°F
Ponce
+79°F
San Juan
+82°F
24 Hours Forecast
San Juan
Local time: 23:20
August 28, friday
0000
82°F
W
14 mph
0300
81°F
W
12 mph
0600
81°F
W
11 mph
0900
86°F
W
15 mph
1200
84°F
W
17 mph
1500
86°F
W
17 mph
1800
84°F
W
14 mph
2100
82°F
W
14 mph
Units of measurement: °C / °F