Measurements:
°C
°F
CURRENT WEATHER
16:59
San Juan
88°F
W 14 mph
Feels like: 96°F
Precip: 22%
World Resorts Puerto Rico San Juan Weather

14 Day Weather Forecast

09.08
tue
DAY
90°F
W 16 mph
precip
12%
NIGHT
84°F
W 15 mph
precip
28%
09.09
wed
DAY
90°F
W 17 mph
precip
20%
NIGHT
84°F
W 15 mph
precip
23%
09.10
thu
DAY
90°F
W 16 mph
precip
36%
NIGHT
84°F
NW 12 mph
precip
24%
09.11
fri
DAY
90°F
W 16 mph
precip
14%
NIGHT
86°F
W 13 mph
precip
41%
09.12
sat
DAY
90°F
W 16 mph
precip
13%
NIGHT
86°F
W 16 mph
precip
18%
09.13
sun
DAY
90°F
W 16 mph
precip
22%
NIGHT
84°F
W 14 mph
precip
32%
09.14
mon
DAY
90°F
W 16 mph
precip
10%
NIGHT
84°F
W 12 mph
precip
28%
09.15
tue
DAY
90°F
W 15 mph
precip
6%
NIGHT
84°F
NW 11 mph
precip
35%
09.16
wed
DAY
88°F
W 17 mph
precip
9%
NIGHT
82°F
W 13 mph
precip
77%
09.17
thu
DAY
84°F
W 19 mph
precip
31%
NIGHT
84°F
W 14 mph
precip
20%
09.18
fri
DAY
90°F
W 15 mph
precip
13%
NIGHT
86°F
W 13 mph
precip
27%
09.19
sat
DAY
90°F
W 12 mph
precip
26%
NIGHT
84°F
W 9 mph
precip
16%
09.20
sun
DAY
90°F
W 13 mph
precip
54%
NIGHT
84°F
NW 7 mph
precip
35%
09.21
mon
DAY
90°F
W 13 mph
precip
36%
NIGHT
84°F
NW 11 mph
precip
25%

San Juan Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for San Juan was 89.7°F. The maximum and minimum values were 89.2°F and 90.4°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
August 12 mph
June 12 mph
more details
Puerto Rico Resorts:
NAME
F°
Aguadilla +86
Arecibo +86
Isabella +84
Mayaguez +88
Ponce +86
San Juan +88
24 Hours Weather Forecast
San Juan
Local time: 16:59
08 sep, tuesday
1800 88°F
W
14 mph
2100 86°F
W
14 mph
09 sep, wednesday
0000 84°F
W
15 mph
0300 84°F
W
14 mph
0600 84°F
W
14 mph
0900 88°F
W
17 mph
1200 90°F
W
17 mph
1500 90°F
W
17 mph