Seoul Marathon weather.
Typically 6°C on race morning; dry every year. Race morning (07:00 to 11:00 local time) in Seoul on race day in each of the last 10 years; the 2027 race is on 21 Mar 2027.
- Typical
- 6°C (43°F)
- race-morning average
- Coolest
- -3°C (27°F)
- lowest reading, 07:00–11:00
- Warmest
- 16°C (61°F)
- highest reading, 07:00–11:00
- Wet years
- 0 of 10
- rain, drizzle or worse
- Humidity
- 68%
- typical
- Wind
- 6 km/h
- typical, at 10 m
Race morning, 07:00–11:00
Year by year
| Race day | Average | Low–high | Humidity | Wind | Rain | Conditions |
|---|---|---|---|---|---|---|
| 22 Mar 2026 | 6°C (43°F) | 2°C (36°F)–11°C (51°F) | 65% | 4 km/h | 0.0 mm | Overcast |
| 23 Mar 2025 | 9°C (49°F) | 4°C (40°F)–15°C (59°F) | 70% | 7 km/h | 0.0 mm | Clear |
| 24 Mar 2024 | 10°C (51°F) | 6°C (42°F)–16°C (60°F) | 65% | 10 km/h | 0.0 mm | Overcast |
| 19 Mar 2023 | 4°C (39°F) | -2°C (28°F)–9°C (49°F) | 72% | 5 km/h | 0.0 mm | Clear |
| 20 Mar 2022 | 3°C (37°F) | -1°C (29°F)–7°C (44°F) | 81% | 8 km/h | 0.0 mm | Overcast |
| 21 Mar 2021 | 5°C (41°F) | 3°C (37°F)–7°C (44°F) | 79% | 15 km/h | 0.3 mm | Overcast |
| 22 Mar 2020 | 7°C (45°F) | 2°C (36°F)–13°C (55°F) | 59% | 10 km/h | 0.0 mm | Clear |
| 24 Mar 2019 | 2°C (35°F) | -3°C (27°F)–6°C (43°F) | 57% | 5 km/h | 0.0 mm | Clear |
| 18 Mar 2018 | 5°C (41°F) | 3°C (38°F)–7°C (45°F) | 73% | 2 km/h | 0.0 mm | Overcast |
| 19 Mar 2017 | 7°C (44°F) | 1°C (34°F)–12°C (54°F) | 58% | 5 km/h | 0.0 mm | Clear |
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. The marathon starts at 08:00.
Kit and pacing
What it means
Good racing weather
Around 6°C is close to ideal for a fast time. Shorts and a vest are enough once you're moving; bring a throwaway layer for the wait in the start pen.
It can be cold
The coolest morning here dropped to -3°C. Pack gloves and a throwaway layer even if the forecast looks kind.
The weather varies a lot
Race mornings here have ranged by 9°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.
Weather data by Open-Meteo.com, from its historical weather archive (CC BY 4.0).