Seaside Marathon
Ventura, CA, USA · June 7, 2026
Race Day Weather
63°at start
78° high
Light
Dry
Warm start, rising temps ahead
Runners will face a starting temperature of 63°F, rising to 78°F by the finish. Winds from the S will be gentle at 7 mph, with gusts up to 20 mph. With humidity at 61% and dew point at 56°F, it’s essential to start conservatively and stay hydrated throughout.
Race day forecast available in 11 days
Pre-raceRace windowPost-race
Get forecast alerts for Seaside Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
FAQ
When is the 2026 Seaside Marathon?
The 2026 Seaside Marathon will be held on Sunday June 7, 2026.
Is the Seaside Marathon a Boston Marathon Qualifier?
Yes, the Seaside Marathon is an official Boston Marathon qualifier.
What will the weather be like for the 2026 Seaside Marathon?
The forecast calls for a high of 80°F and a low of 63°F with a 1% chance of rain.
Historical Weather
Based on 8 years of data
Avg Temp
65°F
L:50° H:65°
RunScore
Conditions
Rain Freq
13%
1 of 8 yrs
Wind11mph
Dew48°F
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2025 | | 52°/66° | - | 52° | |
2024 |  | 59°/68° | - | 54° | |
2024 |  | 67°/80° | - | 41° | |
2023 | | 41°/63° | - | 34° | |
2022 | | 42°/60° | - | 44° | |
2020 | | 44°/65° | - | 46° | |
2019 | | 45°/56° | Light | 39° | |
2018 | | 45°/64° | - | 43° |
More CA Races
San Lorenzo River Marathon
2026-07-11 · Santa Cruz, CA, USA
Golden Gate Trail Run Marathon
2027-02-06 · Rodeo Beach, CA, USA
Saddleback Marathon
2026-11-07 · Lake Elsinore, CA, USA
Navy Bay Bridge Run
2026-05-17 · San Diego, CA, USA
Bay to Breakers
2026-05-17 · San Francisco, CA, USA
Shoreline Marathon
2026-07-12 · Ventura, CA, USA