Hilo in September
Find out everything about the water temperature in Hilo in September. Average, minimum and maximum recorded temperatures as well as daily temperature in September for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in September
Minimum:
79.1 °F
Average:
80.8 °F
Maximum:
83.9 °F
Sea water temperature in Hilo in September
In the city of Hilo, the month of September is a great time for swimming. The minimum recorded temperature during this month was 79.1°F on September 29, 2021, with an average temperature being 80.8°F and a maximum temperature reaching 83.9°F on September 9, 2015.
| Date | 10 years average | 2023 | 2022 |
|---|---|---|---|
| Sep 1 | 80.5°F | 79.6°F | 80.6°F |
| Sep 2 | 80.5°F | 79.4°F | 80.5°F |
| Sep 3 | 80.6°F | 79.5°F | 80.5°F |
| Sep 4 | 80.7°F | 79.3°F | 80.9°F |
| Sep 5 | 80.6°F | 79.5°F | 80.9°F |
| Sep 6 | 80.6°F | 79.3°F | 80.6°F |
| Sep 7 | 80.6°F | 79.3°F | 80.6°F |
| Sep 8 | 80.7°F | 79.5°F | 80.8°F |
| Sep 9 | 80.9°F | 80.1°F | 80.7°F |
| Sep 10 | 81.0°F | 80.5°F | 80.7°F |
| Sep 11 | 80.9°F | 80.0°F | 81.0°F |
| Sep 12 | 80.9°F | 79.8°F | 80.9°F |
| Sep 13 | 80.9°F | 79.8°F | 80.9°F |
| Sep 14 | 80.9°F | 79.8°F | 81.1°F |
| Sep 15 | 80.9°F | 79.9°F | 80.9°F |
| Sep 16 | 80.9°F | 79.8°F | 80.6°F |
| Sep 17 | 80.8°F | 80.1°F | 80.6°F |
| Sep 18 | 80.8°F | 80.2°F | 80.6°F |
| Sep 19 | 80.8°F | 80.5°F | 80.5°F |
| Sep 20 | 80.7°F | 80.4°F | 80.4°F |
| Sep 21 | 80.7°F | 79.9°F | 80.3°F |
| Sep 22 | 80.8°F | 79.8°F | 80.5°F |
| Sep 23 | 80.8°F | 80.0°F | 80.8°F |
| Sep 24 | 80.7°F | 80.2°F | 80.5°F |
| Sep 25 | 80.9°F | 80.0°F | 80.9°F |
| Sep 26 | 80.9°F | 80.1°F | 80.8°F |
| Sep 27 | 80.9°F | 79.9°F | 80.9°F |
| Sep 28 | 80.7°F | 79.6°F | 80.7°F |
| Sep 29 | 80.7°F | 79.7°F | 80.7°F |
| Sep 30 | 80.7°F | 79.8°F | 80.8°F |
In Hilo, the water temperature is comfortable for swimming all year round.
The warmest water in Hilo was recorded on September 9, 2015, reaching a 83.9°F. While the coldest temperature occurred on March 14, 2018, dipping to 74.0°F. The average readings by season are 76.8°F in Winter, 76.6°F in Spring, 79.3°F in Summer, and 80.2°F in Autumn.
In September, the temperature is higher than August's average of 80.2°F and October's average of 80.4°F.