2025 Humboldt Bay Marathon Races
August 10, 2025 - Join us for the 10th Running!
Typical Weather:
Typical Temperatures:
- The normal high temperature during the first half of August is 64 F (18 C) and the normal low is 53 F (12 C). The high temperature typically occurs between noon and 2 PM.
- Over the last 40 years, there have only been 11 days when the temperature has gotten over 70 F (21 C) during the first two weeks of August. That's 11 out of 560 days, less than 2%!
- Note: The weather information on this page is taken from data collected at the Woodley Island station of the National Weather Service. This station is approximately 1 mile from the finish line and very close to the course.
Typical Winds:
All races start and end at the Madaket Plaza, 1st and C Streets in Eureka
- Average wind speed at 8 AM is 4 MPH, rising slightly by 11 AM to 7 MPH.
- Winds are typically light and out of the north or northwest.
How it was in 2023?
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