20.12
sat
sat
Day
77°F
NW 11 mph
Precip.
79%
79%
Night
70°F
E 2 mph
Precip.
0%
0%
21.12
sun
sun
Day
77°F
W 7 mph
Precip.
0%
0%
Night
70°F
S 2 mph
Precip.
76%
76%
22.12
mon
mon
Day
73°F
W 7 mph
Precip.
100%
100%
Night
70°F
S 3 mph
Precip.
100%
100%
23.12
tue
tue
Day
72°F
SW 8 mph
Precip.
100%
100%
Night
70°F
SW 7 mph
Precip.
100%
100%
24.12
wed
wed
Day
70°F
W 7 mph
Precip.
100%
100%
Night
68°F
W 4 mph
Precip.
100%
100%
25.12
thu
thu
Day
72°F
W 8 mph
Precip.
100%
100%
Night
68°F
N 4 mph
Precip.
68%
68%
26.12
fri
fri
Day
73°F
W 7 mph
Precip.
77%
77%
Night
68°F
N 3 mph
Precip.
77%
77%
27.12
sat
sat
Day
75°F
W 8 mph
Precip.
23%
23%
Night
70°F
N 4 mph
Precip.
100%
100%
28.12
sun
sun
Day
75°F
NW 11 mph
Precip.
81%
81%
Night
70°F
N 6 mph
Precip.
69%
69%
29.12
mon
mon
Day
75°F
NW 9 mph
Precip.
100%
100%
Night
70°F
N 4 mph
Precip.
0%
0%
30.12
tue
tue
Day
75°F
NW 11 mph
Precip.
100%
100%
Night
72°F
NW 5 mph
Precip.
61%
61%
31.12
wed
wed
Day
75°F
NW 9 mph
Precip.
22%
22%
Night
70°F
N 7 mph
Precip.
73%
73%
01.01
thu
thu
Day
79°F
NW 14 mph
Precip.
0%
0%
Night
72°F
N 9 mph
Precip.
55%
55%
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 78.1°F. The highest and lowest sea temperatures during the month were 78.8°F and 77.5°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 77.2°F. The highest and lowest sea temperatures during the month were 77.7°F and 76.6°F.
Air temperature in Hilo, °F
Precipitation total in Hilo, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Hilo
Hilo on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Hilo
Local time: 00:45
December 20, saturday
0300
72°F
N
4 mph
4 mph
0600
72°F
N
4 mph
4 mph
0900
75°F
NW
7 mph
7 mph
1200
77°F
NW
11 mph
11 mph
1500
75°F
W
9 mph
9 mph
1800
72°F
NW
6 mph
6 mph
2100
72°F
NE
1 mph
1 mph
December 21, sunday
0000
70°F
E
2 mph
2 mph
