Eureka in September
Find out everything about the water temperature in Eureka 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:
49.2 °F
Average:
55.5 °F
Maximum:
61.3 °F
Sea water temperature in Eureka in September
In the city of Eureka, the month of September is too cold for swimming. The minimum recorded temperature during this month was 49.2°F on September 3, 2022, with an average temperature being 55.5°F and a maximum temperature reaching 61.3°F on September 28, 2014.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Sep 1 | 55.7°F | 55.0°F | 56.2°F |
| Sep 2 | 55.9°F | 56.6°F | 57.2°F |
| Sep 3 | 55.7°F | 56.7°F | 56.4°F |
| Sep 4 | 55.5°F | 57.2°F | 56.8°F |
| Sep 5 | 55.3°F | 56.9°F | 55.5°F |
| Sep 6 | 55.6°F | 56.4°F | 56.3°F |
| Sep 7 | 55.3°F | 52.9°F | 55.6°F |
| Sep 8 | 55.7°F | 54.0°F | 56.6°F |
| Sep 9 | 55.3°F | 52.1°F | 55.4°F |
| Sep 10 | 55.5°F | 53.8°F | 55.6°F |
| Sep 11 | 55.4°F | 51.7°F | 55.8°F |
| Sep 12 | 55.4°F | 53.5°F | 55.6°F |
| Sep 13 | 55.4°F | 56.6°F | 55.1°F |
| Sep 14 | 55.4°F | 56.4°F | 56.2°F |
| Sep 15 | 55.1°F | 56.0°F | 55.2°F |
| Sep 16 | 55.1°F | 56.8°F | 54.5°F |
| Sep 17 | 54.9°F | 55.1°F | 52.6°F |
| Sep 18 | 54.9°F | 54.5°F | 53.1°F |
| Sep 19 | 55.4°F | 55.0°F | 54.0°F |
| Sep 20 | 55.6°F | 54.6°F | 54.3°F |
| Sep 21 | 55.8°F | 54.8°F | 54.2°F |
| Sep 22 | 55.9°F | 54.5°F | 54.7°F |
| Sep 23 | 55.8°F | 53.0°F | 54.2°F |
| Sep 24 | 55.8°F | 54.4°F | 54.3°F |
| Sep 25 | 55.9°F | 54.9°F | 54.2°F |
| Sep 26 | 56.0°F | 54.4°F | 54.2°F |
| Sep 27 | 56.2°F | 54.8°F | 54.3°F |
| Sep 28 | 56.0°F | 53.7°F | 54.7°F |
| Sep 29 | 55.5°F | 51.4°F | 55.1°F |
| Sep 30 | 55.7°F | 53.3°F | 55.6°F |
In an average year, Eureka offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Eureka was recorded on August 12, 2022, reaching a 61.8°F. While the coldest temperature occurred on July 15, 2021, dipping to 44.7°F. The average readings by season are 52.3°F in Winter, 51.4°F in Spring, 54.1°F in Summer, and 54.5°F in Autumn.
In September, the temperature maintains a relatively stable average, similar to August's reading of 55.5°F. However, in October, the temperature drops to an average of 54.1°F.