Swimming in Hilo in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Hilo in september 2025.
In september, according to seasonal norms, the sea temperature in Hilo is:
Minimum: 78°F
Average: 79°F
Maximum: 81°F
Other useful seasonal weather averages in september:
- Outside temperature: 72°F to 77°F
- Most common weather: "Clear/Sunny"
- The wind blows at 14.3mph
- It rains a total of 3.9in, over 5 day(s).
Should we swim in Hilo in september?
Yes! The water temperature in Hilo in september is ideal
In september, swimming is ideal on the beaches around Hilo! With water reaching 81°F at most and 79°F on average, spending time in the water is very pleasant.
Note also that in september, the climate is good with an average outside temperature of 75°F, 3.9in of precipitation (over 5 days) and 79.48 % humidity.
Water and normal seasonal temperatures in Hilo in september
| September | |||
| Average sea temperature | 79°F | ||
| Minimum sea temperature | 78°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 76°F | ||
| Maximum outside temperature | 77°F | ||
| Minimum outside temperature | 74°F | ||
| Wind speed | 9.9mph | ||
| Wind temperature | 74°F | ||
| Precipitation | 3.9in | ||
| Number of days of rain | 5 jour(s) (18%) | ||
| Humidity | 80% | ||
| Visibility in kilometers | 9.5km | ||
| Cloud cover | 31% | ||
| Our opinion | ideal swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Hilo
Swim elsewhere in Hawaii in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Honolulu (Oahu) in september | 81°F | 83°F | ideal swimming | Kauai (Garden Isle) in september | 81°F | 82°F | ideal swimming | Maui in september | 81°F | 83°F | ideal swimming | Captain Cook in september | 80°F | 82°F | ideal swimming | Hana in september | 80°F | 82°F | ideal swimming | Kahului in september | 80°F | 82°F | ideal swimming | Kekaha in september | 81°F | 82°F | ideal swimming | Kilauea in september | 80°F | 82°F | ideal swimming | La'ie in september | 81°F | 82°F | ideal swimming | Molokai in september | 81°F | 83°F | ideal swimming | Niihau in september | 81°F | 82°F | ideal swimming | Pahala in september | 80°F | 82°F | ideal swimming | Waianae in september | 81°F | 83°F | ideal swimming | Kihei in september | 81°F | 82°F | ideal swimming |