Measurements:
°C
°F
CURRENT WEATHER
03:48
Jaco
82°F
W 5 mph
Feels like: 86°F
Precip: 76%
World Resorts Costa Rica Jaco Weather

14 Day Weather Forecast

09.07
mon
DAY
86°F
N 4 mph
precip
20%
NIGHT
82°F
SE 5 mph
precip
29%
09.08
tue
DAY
86°F
N 7 mph
precip
18%
NIGHT
84°F
NE 1 mph
precip
62%
09.09
wed
DAY
88°F
NE 9 mph
precip
20%
NIGHT
84°F
SE 2 mph
precip
17%
09.10
thu
DAY
86°F
NE 8 mph
precip
10%
NIGHT
84°F
SW 4 mph
precip
33%
09.11
fri
DAY
86°F
N 7 mph
precip
19%
NIGHT
84°F
W 6 mph
precip
50%
09.12
sat
DAY
88°F
N 8 mph
precip
17%
NIGHT
80°F
W 8 mph
precip
50%
09.13
sun
DAY
86°F
N 7 mph
precip
10%
NIGHT
80°F
W 9 mph
precip
75%
09.14
mon
DAY
86°F
N 4 mph
precip
38%
NIGHT
82°F
SE 3 mph
precip
67%
09.15
tue
DAY
86°F
N 4 mph
precip
20%
NIGHT
82°F
S 2 mph
precip
58%
09.16
wed
DAY
86°F
N 6 mph
precip
8%
NIGHT
84°F
S 1 mph
precip
20%
09.17
thu
DAY
86°F
NE 6 mph
precip
15%
NIGHT
84°F
SE 4 mph
precip
24%
09.18
fri
DAY
86°F
NE 6 mph
precip
21%
NIGHT
84°F
SE 3 mph
precip
25%
09.19
sat
DAY
88°F
E 9 mph
precip
22%
NIGHT
80°F
W 8 mph
precip
65%
09.20
sun
DAY
84°F
SE 8 mph
precip
23%
NIGHT
82°F
SW 4 mph
precip
25%

Jaco Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Jaco was 87.5°F. The maximum and minimum values were 87.0°F and 88.2°F respectively.

Jaco on the Weather Map

Best Time to Visit Jaco
The most sunny months:
March 12 days
February 11 days
January 8 days
The most warm months:
April 89.0 °F
March 88.9 °F
February 88.4 °F
Warmest sea temperature:
April 89.7 °F
May 89.4 °F
March 89.3 °F
The most cold months:
November 83.9 °F
October 84.7 °F
September 85.5 °F
The most rainy months:
August 21 days
September 21 days
October 21 days
The most windy months:
February 5 mph
March 5 mph
April 4 mph
more details
24 Hours Weather Forecast
Jaco
Local time: 03:48
07 sep, monday
0600 82°F
W
6 mph
0900 84°F
SW
2 mph
1200 86°F
N
4 mph
1500 84°F
NE
2 mph
1800 84°F
SE
3 mph
2100 84°F
SE
7 mph
08 sep, tuesday
0000 82°F
SE
5 mph
0300 82°F
S
6 mph