Under the Oaks Half Marathon Challenge weather.

Typically 24°C on race morning; rain in 3 of the last 10 years. Race morning (07:00 to 11:00 local time) in Jekyll Island on race day in each of the last 10 years; the 2027 race is on 9 Oct 2027.

Typical
24°C (75°F)
race-morning average
Coolest
16°C (61°F)
lowest reading, 07:00–11:00
Warmest
30°C (86°F)
highest reading, 07:00–11:00
Wet years
3 of 10
rain, drizzle or worse
Humidity
80%
typical
Wind
13 km/h
typical, at 10 m

Race morning, 07:00–11:00

Year by year

Race dayAverageLow–highHumidityWindRainConditions
10 Oct 202627°C (81°F)24°C (76°F)–30°C (85°F)85%15 km/h1.3 mmLight drizzle
11 Oct 202518°C (65°F)17°C (63°F)–20°C (68°F)84%28 km/h0.0 mmOvercast
12 Oct 202419°C (66°F)16°C (61°F)–23°C (73°F)75%13 km/h0.0 mmClear
7 Oct 202324°C (74°F)21°C (69°F)–26°C (79°F)78%13 km/h0.0 mmOvercast
8 Oct 202221°C (71°F)17°C (62°F)–26°C (80°F)68%7 km/h0.0 mmClear
9 Oct 202123°C (74°F)22°C (72°F)–25°C (77°F)88%16 km/h0.1 mmOvercast
10 Oct 202026°C (78°F)25°C (76°F)–27°C (80°F)88%23 km/h5.0 mmLight drizzle
12 Oct 201924°C (76°F)22°C (72°F)–26°C (79°F)66%8 km/h0.0 mmPartly cloudy
6 Oct 201826°C (79°F)22°C (72°F)–29°C (85°F)73%7 km/h0.0 mmClear
7 Oct 201728°C (82°F)26°C (79°F)–29°C (85°F)81%10 km/h0.2 mmLight drizzle

Each row is the race's date that year where we know it, else the same weekday nearest its usual date. Temperatures and humidity are averaged over 07:00 to 11:00 local time, rain is the total over those hours, and conditions are the commonest over the morning.

Kit and pacing

What it means

  • Warm: adjust your goal pace

    Around 24°C on race morning costs most runners time. Plan to run a few seconds per kilometer slower than in cool weather, take on fluid and salt at every station, and wear light colors and sun cream.

  • Be ready for rain

    It rained on 3 of the last 10 race mornings. A bin bag or cheap poncho keeps you dry in the start pen; anti-chafe balm and socks that don't hold water help over the distance, and a cap keeps rain out of your eyes.

  • Humid mornings

    Humidity is usually around 80%, so sweat evaporates slowly and it feels warmer than the thermometer says. Pace on effort, not just the watch.

  • The weather varies a lot

    Race mornings here have ranged by 10°C from year to year. Pack for both, and settle your kit and pacing from the forecast in the last few days.

General guidance from past years' numbers. Check the forecast in race week.

The course 2027 dates and entry

Weather data by Open-Meteo.com, from its historical weather archive (CC BY 4.0).

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