17.12
wed
wed
Day
77°F
NW 16 mph
Precip.
0%
0%
Night
72°F
NE 5 mph
Precip.
0%
0%
18.12
thu
thu
Day
79°F
NW 12 mph
Precip.
89%
89%
Night
72°F
NE 5 mph
Precip.
0%
0%
19.12
fri
fri
Day
77°F
NW 11 mph
Precip.
0%
0%
Night
72°F
N 5 mph
Precip.
79%
79%
20.12
sat
sat
Day
75°F
NW 11 mph
Precip.
0%
0%
Night
70°F
N 2 mph
Precip.
83%
83%
21.12
sun
sun
Day
77°F
W 6 mph
Precip.
0%
0%
Night
70°F
SE 1 mph
Precip.
60%
60%
22.12
mon
mon
Day
75°F
SW 7 mph
Precip.
59%
59%
Night
70°F
NE 5 mph
Precip.
100%
100%
23.12
tue
tue
Day
73°F
SW 11 mph
Precip.
100%
100%
Night
70°F
SW 12 mph
Precip.
100%
100%
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 77.7°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: 22:13
December 18, thursday
0000
72°F
NE
5 mph
5 mph
0300
70°F
NE
4 mph
4 mph
0600
70°F
NE
4 mph
4 mph
0900
75°F
N
6 mph
6 mph
1200
79°F
NW
12 mph
12 mph
1500
79°F
NW
13 mph
13 mph
1800
72°F
NW
9 mph
9 mph
2100
73°F
N
6 mph
6 mph
