Current sea water temperature:
+80.1°F
| Minimum sea water temperature in July: | 81.0°F |
| Maximum sea water temperature in July: | 76.1°F |
| Average sea water temperature in July: | 79.1°F |
| more information | |
14 days
forecast
forecast
| Hilo |
monthly
weather
weather
| Hilo |
Sea water temperature for the last 10 days:
| July 26 | 80.1°F | July 21 | 79.7°F |
| July 25 | 80.2°F | July 20 | 79.9°F |
| July 24 | 80.2°F | July 19 | 79.9°F |
| July 23 | 80.2°F | July 18 | 80.2°F |
| July 22 | 79.9°F | July 17 | 80.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Hilo?
Based on the data about daily sea water temperature for the last three years the warmest sea in Hilo was noticed in September, October and August.
Monthly Sea Temperatures in Hilo, °F
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 80.4°F. The highest and lowest sea temperatures during the month were 80.8°F and 80.1°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 80.3°F. The highest and lowest sea temperatures during the month were 80.8°F and 79.7°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 79.9°F. The highest and lowest sea temperatures during the month were 80.6°F and 79.2°F.
current
weather
weather
| Hilo |
weather in
July
July
| Hilo |
Best time for vacation in Hilo
Hilo on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Hilo
Local time: 08:20
July 26, sunday
0900
75°F
S
7 mph
7 mph
1200
77°F
SW
7 mph
7 mph
1500
77°F
SW
10 mph
10 mph
1800
75°F
SW
11 mph
11 mph
2100
73°F
S
9 mph
9 mph
July 27, monday
0000
73°F
S
6 mph
6 mph
0300
70°F
SE
6 mph
6 mph
0600
68°F
SE
8 mph
8 mph
