16.09
wed
wed
Day
88°F
E 7 mph
Precip.
14%
14%
Night
79°F
W 3 mph
Precip.
28%
28%
17.09
thu
thu
Day
84°F
SW 8 mph
Precip.
9%
9%
Night
79°F
W 3 mph
Precip.
8%
8%
18.09
fri
fri
Day
84°F
E 17 mph
Precip.
12%
12%
Night
79°F
W 2 mph
Precip.
23%
23%
19.09
sat
sat
Day
82°F
E 15 mph
Precip.
13%
13%
Night
79°F
W 6 mph
Precip.
26%
26%
20.09
sun
sun
Day
82°F
E 13 mph
Precip.
19%
19%
Night
79°F
NW 4 mph
Precip.
48%
48%
21.09
mon
mon
Day
79°F
E 11 mph
Precip.
74%
74%
Night
79°F
NW 2 mph
Precip.
70%
70%
22.09
tue
tue
Day
75°F
NE 6 mph
Precip.
70%
70%
Night
75°F
NW 6 mph
Precip.
33%
33%
23.09
wed
wed
Day
81°F
NE 7 mph
Precip.
54%
54%
Night
75°F
NW 6 mph
Precip.
40%
40%
24.09
thu
thu
Day
82°F
E 8 mph
Precip.
27%
27%
Night
77°F
W 6 mph
Precip.
72%
72%
25.09
fri
fri
Day
75°F
N 7 mph
Precip.
94%
94%
Night
75°F
N 12 mph
Precip.
93%
93%
26.09
sat
sat
Day
77°F
NW 6 mph
Precip.
25%
25%
Night
77°F
NW 6 mph
Precip.
26%
26%
27.09
sun
sun
Day
81°F
N 6 mph
Precip.
53%
53%
Night
77°F
W 4 mph
Precip.
35%
35%
28.09
mon
mon
Day
81°F
SE 4 mph
Precip.
57%
57%
Night
79°F
S 6 mph
Precip.
44%
44%
29.09
tue
tue
Day
81°F
E 2 mph
Precip.
61%
61%
Night
77°F
NW 3 mph
Precip.
67%
67%
sea water
temperature
temperature
| Tamarindo |
monthly
weather
weather
| Tamarindo |
current
weather
weather
| Tamarindo |
7 days
forecast
forecast
| Tamarindo |
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 86.6°F. The highest and lowest sea temperatures during the month were 87.6°F and 85.6°F.
Air temperature in Tamarindo, °F
Precipitation total in Tamarindo, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Tamarindo
Tamarindo on a weather map
Places in Costa Rica:
Name
°F
24 Hours Forecast
Tamarindo
Local time: 07:30
September 16, wednesday
0900
84°F
SW
5 mph
5 mph
1200
88°F
E
7 mph
7 mph
1500
82°F
NE
14 mph
14 mph
1800
82°F
N
4 mph
4 mph
2100
79°F
NW
5 mph
5 mph
September 17, thursday
0000
79°F
W
3 mph
3 mph
0300
79°F
SW
2 mph
2 mph
0600
79°F
W
4 mph
4 mph
