04.01
sun
sun
Day
84°F
W 6 mph
Precip.
0%
0%
Night
77°F
N 5 mph
Precip.
0%
0%
05.01
mon
mon
Day
77°F
S 6 mph
Precip.
0%
0%
Night
77°F
SW 5 mph
Precip.
0%
0%
06.01
tue
tue
Day
79°F
SW 9 mph
Precip.
0%
0%
Night
77°F
W 7 mph
Precip.
0%
0%
07.01
wed
wed
Day
81°F
W 13 mph
Precip.
0%
0%
Night
75°F
W 7 mph
Precip.
100%
100%
08.01
thu
thu
Day
81°F
W 8 mph
Precip.
100%
100%
Night
73°F
W 8 mph
Precip.
100%
100%
09.01
fri
fri
Day
81°F
W 13 mph
Precip.
100%
100%
Night
75°F
W 12 mph
Precip.
100%
100%
10.01
sat
sat
Day
81°F
W 16 mph
Precip.
100%
100%
Night
75°F
W 11 mph
Precip.
100%
100%
11.01
sun
sun
Day
79°F
W 12 mph
Precip.
100%
100%
Night
73°F
W 8 mph
Precip.
100%
100%
12.01
mon
mon
Day
79°F
SW 11 mph
Precip.
47%
47%
Night
73°F
W 8 mph
Precip.
21%
21%
13.01
tue
tue
Day
79°F
SW 12 mph
Precip.
71%
71%
Night
72°F
W 7 mph
Precip.
53%
53%
14.01
wed
wed
Day
79°F
W 11 mph
Precip.
57%
57%
Night
72°F
NW 6 mph
Precip.
27%
27%
15.01
thu
thu
Day
81°F
W 11 mph
Precip.
0%
0%
Night
73°F
NW 6 mph
Precip.
78%
78%
16.01
fri
fri
Day
81°F
W 9 mph
Precip.
28%
28%
Night
73°F
NW 6 mph
Precip.
100%
100%
17.01
sat
sat
Day
81°F
W 12 mph
Precip.
72%
72%
Night
75°F
W 9 mph
Precip.
21%
21%
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 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: 23:40
January 05, monday
0000
77°F
N
5 mph
5 mph
0300
75°F
N
4 mph
4 mph
0600
75°F
N
4 mph
4 mph
0900
75°F
NE
2 mph
2 mph
1200
77°F
S
6 mph
6 mph
1500
77°F
S
11 mph
11 mph
1800
77°F
W
7 mph
7 mph
2100
77°F
W
5 mph
5 mph
