World Resorts Costa Rica Jaco Weather

Jaco sea water temperature

Current sea water temperature:
+83.1°F
Minimum sea water temperature in December: 86.9°F
Maximum sea water temperature in December: 81.3°F
Average sea water temperature in December: 83.2°F

Sea water temperature for the last 10 days:

December 4 83.1°F November 29 83.5°F
December 3 83.1°F November 28 83.5°F
December 2 83.1°F November 27 83.1°F
December 1 83.1°F November 26 82.6°F
November 30 83.3°F November 25 82.6°F

When is the warmest sea in Jaco?

Based on the data about daily sea water temperature for the last three years the warmest sea in Jaco was noticed in April, May and March.

Monthly Sea Temperatures in Jaco, °F

Sea water temperature in April, °F

Show year:
2025
2024
2023

The average sea water temperature in April of 2025 was 86.6°F. The highest and lowest sea temperatures during the month were 87.3°F and 86.0°F.

Sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 85.9°F. The highest and lowest sea temperatures during the month were 86.7°F and 84.9°F.

Sea water temperature in March, °F

Show year:
2025
2024
2023

The average sea water temperature in March of 2025 was 85.8°F. The highest and lowest sea temperatures during the month were 86.5°F and 84.6°F.

Best time for vacation in Jaco

Sunniest months:
February 11 days
March 10 days
January 7 days
Warmest months:
April 85.2 °F
March 85.1 °F
February 84.7 °F
Warmest sea temp:
April 85.6 °F
May 85.4 °F
March 85.3 °F
Coldest months:
November 80.5 °F
October 81.2 °F
August 81.7 °F
Rainiest months:
August 24 days
July 22 days
June 22 days
Windiest months:
February 5.2 mph
March 5.1 mph
April 4.8 mph

Jaco on a weather map

Jaco
+77°F
W 5 mph
Feels like: +81°F
Precip.: 100%
Places in Costa Rica:
Name
°F
+57°F
+77°F
+73°F
+72°F
+73°F
+73°F
+75°F
+54°F
+79°F
+75°F
+73°F
+57°F
24 Hours Forecast
Jaco
Local time: 22:41
December 05, friday
0000
77°F
W
5 mph
0300
75°F
SW
6 mph
0600
75°F
SW
6 mph
0900
81°F
W
3 mph
1200
81°F
N
6 mph
1500
81°F
N
6 mph
1800
79°F
NW
6 mph
2100
77°F
W
5 mph
Units of measurement: °C / °F