World Resorts Costa Rica Jaco Weather

Jaco 7 Days Forecast

16.09
wed
Day
82°F
NE 8 mph
Precip.
19%
Night
81°F
SE 7 mph
Precip.
23%
17.09
thu
Day
82°F
NE 6 mph
Precip.
7%
Night
81°F
SE 3 mph
Precip.
36%
18.09
fri
Day
82°F
NE 7 mph
Precip.
5%
Night
81°F
SE 4 mph
Precip.
21%
19.09
sat
Day
82°F
N 6 mph
Precip.
18%
Night
81°F
NW 1 mph
Precip.
84%
20.09
sun
Day
82°F
N 7 mph
Precip.
22%
Night
79°F
W 9 mph
Precip.
47%
21.09
mon
Day
82°F
N 11 mph
Precip.
36%
Night
77°F
NW 13 mph
Precip.
81%
22.09
tue
Day
79°F
NW 9 mph
Precip.
46%
Night
77°F
W 6 mph
Precip.
29%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 86.4°F. The highest and lowest sea temperatures during the month were 87.3°F and 85.8°F.

Air temperature in Jaco, °F

Precipitation total in Jaco, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Jaco

Sunniest months:
March 12 days
February 11 days
January 8 days
Warmest months:
April 85.1 °F
March 85.0 °F
February 84.5 °F
Warmest sea temp:
April 85.7 °F
May 85.5 °F
March 85.4 °F
Coldest months:
November 80.5 °F
October 81.2 °F
September 81.9 °F
Rainiest months:
August 21 days
September 21 days
October 21 days
Windiest months:
February 5.3 mph
March 5.2 mph
April 4.9 mph

Jaco on a weather map

Current weather
07:29
Jaco
+79°F
S 1 mph
Feels like: +84°F
Precip.: 23%
Places in Costa Rica:
Name
°F
Alajuela
+64°F
Jaco
+79°F
Cahuita
+77°F
Limon
+77°F
Playas del Coco
+77°F
Playa Flamingo
+77°F
Puerto Viejo de Talamanca
+77°F
Puerto Limon
+77°F
Samara
+73°F
San Jose
+61°F
Santa Teresa
+81°F
Tamarindo
+77°F
Tortuguero
+75°F
El Roble
+77°F
Heredia
+61°F
all places
24 Hours Forecast
Jaco
Local time: 07:29
September 16, wednesday
0900
82°F
NW
2 mph
1200
82°F
NE
8 mph
1500
82°F
NE
7 mph
1800
81°F
SE
2 mph
2100
81°F
SE
6 mph
September 17, thursday
0000
81°F
SE
7 mph
0300
81°F
SE
5 mph
0600
79°F
SW
4 mph
Units of measurement: °C / °F