Race-day weather · Wyndo for runners
OC Marathon weather
May 2, 2027 · Newport Beach, CA · scheduled start 5:30 AM (America/Los_Angeles). What the start usually feels like, year by year — and a live start-time read once the race is inside the 7-day forecast window.
Countdown
249 days to race day
The live race-day forecast unlocks 243 days from now, when May 2, 2027 enters the 7-day forecast window — a start-time read for the scheduled 5:30 AM start. Until then, live hourly data is not available; the history below shows what race morning usually looks like.
Typical start temp
58°F
median of 20 years
A warm year
59°F
75th percentile start temp
Rain at the start
10%
2 of 20 measured years
Race-morning weather history
Coastal SoCal early-May race with a pre-dawn start — typically overcast marine-layer conditions (~57F, 87% humidity at the start). Skip 2020 (virtual); 2021 ran in November with no marathon. Wyndo tracks what this calendar slot has actually served up at the start hour — temperature, dew point, wind, and rain — including the years when weather canceled or disrupted the race, and reads the live forecast for the start once race week arrives.
Median start temp
58°F
p75 (a warm year): 59°F
Median dew point
53°F
at the start hour
Rain at the start
10%
2 of 20 measured years
Warmest start
61°F
in 2013
Scroll sideways to see all columns.
| Year | Start temp | Dew point | Wind | Precip (start hr) | Day's high |
|---|---|---|---|---|---|
| 2026 | 59°F | 53°F | 3 mph | dry | 65°F |
| 2025 | 56°F | 52°F | 5 mph | dry | 60°F |
| 2024 | 56°F | 51°F | 13 mph | 0.4 mm | 65°F |
| 2023 | 56°F | 51°F | 1 mph | dry | 66°F |
| 2022 | 58°F | 54°F | 6 mph | dry | 67°F |
| 2021 | 60°F | 52°F | 6 mph | dry | 66°F |
| 2020 | 60°F | 57°F | 5 mph | dry | 72°F |
| 2019 | 59°F | 53°F | 3 mph | dry | 66°F |
| 2018 | 59°F | 56°F | 1 mph | dry | 73°F |
| 2017 | 53°F | 47°F | 7 mph | 0.4 mm | 60°F |
| 2016 | 57°F | 53°F | 7 mph | dry | 70°F |
| 2015 | 59°F | 55°F | 3 mph | dry | 68°F |
| 2014 | 59°F | 58°F | 3 mph | dry | 74°F |
| 2013 | 61°F | 52°F | 8 mph | dry | 65°F |
| 2012 | 58°F | 57°F | 5 mph | dry | 67°F |
| 2011 | 55°F | 36°F | 6 mph | dry | 80°F |
| 2010 | 57°F | 52°F | 9 mph | dry | 66°F |
| 2009 | 57°F | 55°F | 3 mph | dry | 71°F |
| 2008 | 58°F | 53°F | 5 mph | dry | 64°F |
| 2007 | 56°F | 40°F | 5 mph | dry | 82°F |
Slot climatology: each row is the weather at this race's usual calendar slot and start hour (ERA5 reanalysis at the start line) — including years when the edition was canceled or moved. A computed slot date is not a claim the race ran that day.
Your heat-adjusted goal for the marathon
The same cited model as the full calculator, pointed at this race: the median start-hour conditions this calendar slot has served up — climatology, not a forecast.
Your race-day brief
Skip the taper-week refresh spiral. Email briefs for the OC Marathon: a start-hour outlook when race day enters the 7-day forecast window, updates only when it changes meaningfully, and a final look the day before.
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Race facts
- Start line
- Fashion Island, 1001 Newport Center Drive, Newport Beach — point-to-point finishing at the OC Fair & Event Center, Costa Mesa (~5 km away; aggregators pin the FINISH city). Coordinates are the OSM geocode, approximate within ~100 m.
- Scheduled start
- 5:30 AM (America/Los_Angeles) — Official 2027: marathon 5:30 AM PT, single start with finish-time-seeded corrals (assignments emailed race week); the OC Half starts separately 6:30 AM from the same line. No wheelchair/elite gun published; wheelchair athletes limited to the full per FAQ. 7-hour limit.
- Field size
- Marathon finishers, 2026 edition, per FindMyMarathon (aggregator — official ChronoTrack results are JS-rendered).
- Registration
- open (RunSignup, opens ~Aug 1 for the following May; no lottery)
Wyndo is not affiliated with or endorsed by the OC Marathon (officially the "Hoag OC Marathon Running Festival") or its organizers. Race names are used descriptively to identify the event; schedules and start times belong to the race — always confirm details on the official site. Weather guidance here is informational, never medical advice, and event alert flags on race day belong to the race's own medical team.