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

Jaco Sea Water Temperature

Current Sea Water Temperature:
+90.4°F
Maximum Sea Water Temperature in September: 91.4°F
Minimum Sea Water Temperature in September: 85.8°F
Average water temperature in September: 87.7°F

Sea Water Temperature for the Last 10 Days:

September 07 90.4°F September 02 90.4°F
September 06 91.4°F September 01 91.0°F
September 05 91.0°F August 31 90.8°F
September 04 91.2°F August 30 90.6°F
September 03 90.2°F August 29 91.0°F

When is the Warmest Sea for Jaco?

According to our data for the last three years for Jaco the highest average sea water temperature was in April, May and March.

Average Water Temperature by Month, °F

Sea Water Temperature in April

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Jaco was 90.2°F. The maximum and minimum values were 88.8°F and 91.0°F respectively.

Sea Water Temperature in May

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Jaco was 90.3°F. The maximum and minimum values were 89.6°F and 91.4°F respectively.

Sea Water Temperature in March

Select Year: 2026 2025 2024

The average sea surface temperature in March 2026 for Jaco was 90.0°F. The maximum and minimum values were 88.8°F and 91.0°F respectively.

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

Jaco on the Weather Map

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