12.01
mon
mon
Day

84°F
W 12 mph
Precip.
0%
0%
Night

77°F
W 9 mph
Precip.
0%
0%
13.01
tue
tue
Day

81°F
W 12 mph
Precip.
0%
0%
Night

77°F
NW 7 mph
Precip.
0%
0%
14.01
wed
wed
Day

81°F
W 11 mph
Precip.
0%
0%
Night

75°F
NW 8 mph
Precip.
74%
74%
15.01
thu
thu
Day

81°F
W 13 mph
Precip.
100%
100%
Night

75°F
NW 7 mph
Precip.
0%
0%
16.01
fri
fri
Day

82°F
W 10 mph
Precip.
0%
0%
Night

75°F
W 9 mph
Precip.
78%
78%
17.01
sat
sat
Day

81°F
W 16 mph
Precip.
100%
100%
Night

75°F
W 14 mph
Precip.
71%
71%
18.01
sun
sun
Day

81°F
W 16 mph
Precip.
100%
100%
Night

75°F
W 11 mph
Precip.
100%
100%
sea water
temperature
temperature
| San Juan |
monthly
weather
weather
| San Juan |
current
weather
weather
| San Juan |
14 days
forecast
forecast
| San Juan |
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 81.5°F. The highest and lowest sea temperatures during the month were 82.4°F and 80.8°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: 00:35
January 12, monday
0300

77°F
W
7 mph
7 mph
0600

77°F
W
7 mph
7 mph
0900

79°F
W
9 mph
9 mph
1200

84°F
W
12 mph
12 mph
1500

81°F
W
14 mph
14 mph
1800

79°F
W
11 mph
11 mph
2100

79°F
W
11 mph
11 mph
January 13, tuesday
0000

77°F
W
9 mph
9 mph

























