17.05
sun
sun
Day
84°F
NE 7 mph
Precip.
86%
86%
Night
81°F
SW 2 mph
Precip.
100%
100%
18.05
mon
mon
Day
86°F
N 7 mph
Precip.
0%
0%
Night
81°F
S 2 mph
Precip.
100%
100%
19.05
tue
tue
Day
84°F
N 6 mph
Precip.
0%
0%
Night
82°F
W 1 mph
Precip.
100%
100%
20.05
wed
wed
Day
86°F
NE 6 mph
Precip.
0%
0%
Night
82°F
SW 2 mph
Precip.
0%
0%
21.05
thu
thu
Day
86°F
N 6 mph
Precip.
100%
100%
Night
82°F
SW 2 mph
Precip.
100%
100%
22.05
fri
fri
Day
86°F
N 7 mph
Precip.
0%
0%
Night
81°F
W 8 mph
Precip.
0%
0%
23.05
sat
sat
Day
84°F
NE 6 mph
Precip.
0%
0%
Night
82°F
S 1 mph
Precip.
100%
100%
24.05
sun
sun
Day
84°F
N 7 mph
Precip.
100%
100%
Night
82°F
SE 2 mph
Precip.
100%
100%
25.05
mon
mon
Day
82°F
N 1 mph
Precip.
78%
78%
Night
81°F
SE 5 mph
Precip.
0%
0%
26.05
tue
tue
Day
82°F
NW 5 mph
Precip.
100%
100%
Night
81°F
W 4 mph
Precip.
100%
100%
27.05
wed
wed
Day
82°F
NW 2 mph
Precip.
0%
0%
Night
81°F
S 1 mph
Precip.
0%
0%
28.05
thu
thu
Day
84°F
N 3 mph
Precip.
100%
100%
Night
82°F
W 1 mph
Precip.
0%
0%
29.05
fri
fri
Day
84°F
NE 6 mph
Precip.
100%
100%
Night
79°F
S 5 mph
Precip.
100%
100%
30.05
sat
sat
Day
84°F
NE 6 mph
Precip.
64%
64%
Night
81°F
W 4 mph
Precip.
100%
100%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 86.3°F. The highest and lowest sea temperatures during the month were 87.3°F and 85.8°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 84.6°F. The highest and lowest sea temperatures during the month were 85.3°F and 84.0°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
Jaco on a weather map
Places in Costa Rica:
Name
°F
24 Hours Forecast
Jaco
Local time: 15:48
May 17, sunday
1800
82°F
N
3 mph
3 mph
2100
82°F
W
2 mph
2 mph
May 18, monday
0000
81°F
SW
2 mph
2 mph
0300
81°F
S
4 mph
4 mph
0600
81°F
SW
4 mph
4 mph
0900
84°F
SE
1 mph
1 mph
1200
86°F
N
7 mph
7 mph
1500
86°F
N
8 mph
8 mph
