17.09
thu
thu
Day
90°F
W 12 mph
Precip.
13%
13%
Night
81°F
NW 8 mph
Precip.
17%
17%
18.09
fri
fri
Day
86°F
SW 16 mph
Precip.
17%
17%
Night
79°F
NW 8 mph
Precip.
10%
10%
19.09
sat
sat
Day
84°F
SW 15 mph
Precip.
18%
18%
Night
79°F
NW 6 mph
Precip.
14%
14%
20.09
sun
sun
Day
84°F
SW 14 mph
Precip.
35%
35%
Night
77°F
NW 6 mph
Precip.
10%
10%
21.09
mon
mon
Day
84°F
SW 14 mph
Precip.
15%
15%
Night
79°F
W 7 mph
Precip.
22%
22%
22.09
tue
tue
Day
86°F
SW 15 mph
Precip.
9%
9%
Night
79°F
NW 9 mph
Precip.
32%
32%
23.09
wed
wed
Day
84°F
SW 17 mph
Precip.
22%
22%
Night
79°F
W 11 mph
Precip.
33%
33%
24.09
thu
thu
Day
86°F
SW 12 mph
Precip.
36%
36%
Night
79°F
NW 7 mph
Precip.
17%
17%
25.09
fri
fri
Day
86°F
SW 9 mph
Precip.
17%
17%
Night
79°F
N 4 mph
Precip.
13%
13%
26.09
sat
sat
Day
84°F
SW 9 mph
Precip.
8%
8%
Night
79°F
NW 6 mph
Precip.
22%
22%
27.09
sun
sun
Day
84°F
SW 11 mph
Precip.
16%
16%
Night
77°F
NW 4 mph
Precip.
11%
11%
28.09
mon
mon
Day
84°F
SW 7 mph
Precip.
45%
45%
Night
77°F
NW 5 mph
Precip.
11%
11%
29.09
tue
tue
Day
84°F
W 16 mph
Precip.
17%
17%
Night
79°F
NW 6 mph
Precip.
16%
16%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 85.3°F. The highest and lowest sea temperatures during the month were 85.6°F and 84.9°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 85.4°F. The highest and lowest sea temperatures during the month were 85.8°F and 84.6°F.
Air temperature in Arecibo, °F
Precipitation total in Arecibo, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Arecibo
Arecibo on a weather map
Places in Puerto Rico:
Name
°F
24 Hours Forecast
Arecibo
Local time: 00:58
September 17, thursday
0300
79°F
NW
9 mph
9 mph
0600
79°F
NW
7 mph
7 mph
0900
84°F
NW
11 mph
11 mph
1200
90°F
W
12 mph
12 mph
1500
90°F
NW
15 mph
15 mph
1800
84°F
W
13 mph
13 mph
2100
81°F
NW
12 mph
12 mph
September 18, friday
0000
81°F
NW
8 mph
8 mph
