Cheonan Weather in August
August in Cheonan brings very high temperatures, with highs of 31°C (88°F) and nights dropping to 22°C (72°F). Rainfall is on the higher side this month, averaging around 241 mm (9.5 in), so keep a rain jacket handy.
Rainfall in Cheonan in August
Based on our climate data of the past 30 years, about 13 days of rain are anticipated, with 241 mm (9.5 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Cheonan in August
Temperatures in Cheonan in August top out at 31°C (88°F) and drop to 22°C (72°F) overnight. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. With overnight lows of 22°C (72°F), evenings stay pleasantly warm. These are average temperatures, but occasional heat spikes are possible. Stay comfortable by wearing light clothing and drinking water.
Sunshine in Cheonan in August
The days are predominantly sunny, with an estimated total of around 209 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May and October typically offer the best weather for Cheonan.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Cheonan's climate page.
Cheonan Temperature in August
Min Temperature
22°C (72°F)
Max Temperature
31°C (88°F)
Chance of Rain
44%
Precipitation
241 mm (9.5 in)
Rainy days
13 days
Humidity
78%
Sunshine
209 hours
Percentage Sunshine
48%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cheonan typically drop from around 31°C (88°F) at the start of August to approximately 28°C (82°F) by the end. Nights are warm, with lows typically ranging from 20°C (68°F) to 24°C (75°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Cheonan in August
Browse day-by-day weather records for Cheonan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cheonan historical weather extremes in August
Based on weather observations in Cheonan between 1976 and 2025, these are the recorded extremes during August.
- Cheonan recorded its highest August temperature of 38°C (100°F) on August 1, 2018.
- On August 30, 2022, Cheonan saw its coldest August day with temperatures maxing out at 20°C (68°F).
- The coldest night in August in Cheonan was on August 28, 1979, with a minimum of 13°C (55°F).
Best Places in South Korea in August
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in August →
perfect weather
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tolerable
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What to Wear in Cheonan in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Cheonan in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Cheonan's climate page.
Temperature Rainfall Sunshine Humidity
See the full Cheonan climate overview or explore weather in South Korea.
