05.09
sat
sat
Day
72°F
SW 6 mph
Precip.
44%
44%
Night
59°F
W 4 mph
Precip.
42%
42%
06.09
sun
sun
Day
72°F
SW 6 mph
Precip.
68%
68%
Night
59°F
W 2 mph
Precip.
40%
40%
07.09
mon
mon
Day
66°F
SE 2 mph
Precip.
73%
73%
Night
61°F
W 4 mph
Precip.
37%
37%
08.09
tue
tue
Day
73°F
SW 7 mph
Precip.
46%
46%
Night
63°F
SW 7 mph
Precip.
35%
35%
09.09
wed
wed
Day
72°F
SW 8 mph
Precip.
19%
19%
Night
61°F
SW 5 mph
Precip.
50%
50%
10.09
thu
thu
Day
75°F
SW 7 mph
Precip.
3%
3%
Night
59°F
W 4 mph
Precip.
32%
32%
11.09
fri
fri
Day
72°F
SW 6 mph
Precip.
57%
57%
Night
61°F
W 4 mph
Precip.
31%
31%
12.09
sat
sat
Day
72°F
SW 5 mph
Precip.
43%
43%
Night
59°F
W 4 mph
Precip.
21%
21%
13.09
sun
sun
Day
72°F
SW 4 mph
Precip.
67%
67%
Night
61°F
SW 2 mph
Precip.
47%
47%
14.09
mon
mon
Day
68°F
S 2 mph
Precip.
75%
75%
Night
63°F
NW 2 mph
Precip.
78%
78%
15.09
tue
tue
Day
73°F
S 2 mph
Precip.
66%
66%
Night
64°F
NE 1 mph
Precip.
75%
75%
16.09
wed
wed
Day
66°F
S 2 mph
Precip.
74%
74%
Night
63°F
N 2 mph
Precip.
64%
64%
17.09
thu
thu
Day
72°F
SE 2 mph
Precip.
80%
80%
Night
63°F
W 1 mph
Precip.
34%
34%
18.09
fri
fri
Day
75°F
SE 2 mph
Precip.
7%
7%
Night
64°F
W 0 mph
Precip.
49%
49%
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 83.7°F. The highest and lowest sea temperatures during the month were 84.2°F and 83.1°F.
Air temperature in Heredia, °F
Precipitation total in Heredia, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Heredia
Heredia on a weather map
Places in Costa Rica:
Name
°F
24 Hours Forecast
Heredia
Local time: 01:36
September 05, saturday
0300
63°F
SW
4 mph
4 mph
0600
63°F
SW
4 mph
4 mph
0900
70°F
SW
5 mph
5 mph
1200
72°F
SW
6 mph
6 mph
1500
68°F
SW
6 mph
6 mph
1800
63°F
SW
4 mph
4 mph
2100
59°F
W
4 mph
4 mph
September 06, sunday
0000
59°F
W
4 mph
4 mph
