Current sea water temperature:
+80.8°F
| Minimum sea water temperature in October: | 82.0°F |
| Maximum sea water temperature in October: | 77.7°F |
| Average sea water temperature in October: | 80.0°F |
| more information | |
14 days
forecast
forecast
| Hilo |
monthly
weather
weather
| Hilo |
Sea water temperature for the last 10 days:
| October 18 | 80.8°F | October 13 | 81.5°F |
| October 17 | 81.0°F | October 12 | 81.3°F |
| October 16 | 81.3°F | October 11 | 81.1°F |
| October 15 | 81.3°F | October 10 | 81.0°F |
| October 14 | 81.3°F | October 9 | 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:
2026
2025
2024
The average sea water temperature in September of 2026 was 81.1°F. The highest and lowest sea temperatures during the month were 81.7°F and 80.1°F.
Sea water temperature in October, °F
Show year:
2026
2025
2024
The average sea water temperature in October of 2026 was 80.7°F. The highest and lowest sea temperatures during the month were 81.5°F and 79.9°F.
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 81.0°F. The highest and lowest sea temperatures during the month were 81.9°F and 79.9°F.
current
weather
weather
| Hilo |
weather in
October
October
| Hilo |
Best time for vacation in Hilo
Hilo on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Hilo
Local time: 14:20
October 18, sunday
1500
77°F
SW
10 mph
10 mph
1800
77°F
SW
10 mph
10 mph
2100
77°F
SW
13 mph
13 mph
October 19, monday
0000
75°F
SW
6 mph
6 mph
0300
75°F
SW
7 mph
7 mph
0600
75°F
SW
8 mph
8 mph
0900
77°F
SW
6 mph
6 mph
1200
77°F
W
8 mph
8 mph
