17.03
tue
tue
Day
79°F
W 18 mph
Precip.
0%
0%
Night
75°F
W 11 mph
Precip.
0%
0%
18.03
wed
wed
Day
79°F
W 17 mph
Precip.
0%
0%
Night
75°F
NW 8 mph
Precip.
0%
0%
19.03
thu
thu
Day
81°F
W 15 mph
Precip.
0%
0%
Night
75°F
NW 6 mph
Precip.
0%
0%
20.03
fri
fri
Day
82°F
NW 11 mph
Precip.
100%
100%
Night
73°F
NE 2 mph
Precip.
0%
0%
21.03
sat
sat
Day
81°F
SW 10 mph
Precip.
0%
0%
Night
73°F
W 4 mph
Precip.
100%
100%
22.03
sun
sun
Day
81°F
SW 10 mph
Precip.
47%
47%
Night
73°F
W 9 mph
Precip.
61%
61%
23.03
mon
mon
Day
81°F
W 14 mph
Precip.
100%
100%
Night
75°F
W 8 mph
Precip.
100%
100%
24.03
tue
tue
Day
81°F
W 14 mph
Precip.
0%
0%
Night
75°F
W 13 mph
Precip.
100%
100%
25.03
wed
wed
Day
79°F
W 17 mph
Precip.
100%
100%
Night
73°F
W 14 mph
Precip.
100%
100%
26.03
thu
thu
Day
81°F
W 17 mph
Precip.
100%
100%
Night
75°F
W 12 mph
Precip.
70%
70%
27.03
fri
fri
Day
81°F
W 17 mph
Precip.
81%
81%
Night
75°F
W 12 mph
Precip.
100%
100%
28.03
sat
sat
Day
81°F
W 17 mph
Precip.
29%
29%
Night
75°F
NW 10 mph
Precip.
79%
79%
29.03
sun
sun
Day
82°F
W 14 mph
Precip.
77%
77%
Night
75°F
NW 9 mph
Precip.
0%
0%
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 March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 80.4°F. The highest and lowest sea temperatures during the month were 80.6°F and 80.2°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: 00:54
March 17, tuesday
0300
77°F
W
14 mph
14 mph
0600
75°F
W
15 mph
15 mph
0900
77°F
W
17 mph
17 mph
1200
79°F
W
18 mph
18 mph
1500
81°F
W
17 mph
17 mph
1800
79°F
W
14 mph
14 mph
2100
77°F
W
12 mph
12 mph
March 18, wednesday
0000
75°F
W
11 mph
11 mph
