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Cheonan Weather in October
October in Cheonan typically sees daytime highs of 21°C (70°F) and nighttime lows of 9°C (48°F). Expect some rainfall during the month.
Rainfall in Cheonan in October
Based on our climate data of the past 30 years, about 7 days of rain are anticipated, with 58 mm (2.3 in) on average. Rainfall tends to arrive in short, intense showers this month. Rain days are few, but the showers can be surprisingly heavy.
Temperature in Cheonan in October
October tends to be one of the excellent months in Cheonan, with 21°C (70°F) in the afternoon and 9°C (48°F) overnight. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Cheonan in October
Expect sunny days throughout the month, with an estimated 215 hours of sunshine. This makes it a pleasant time to visit Cheonan.If you're inclined towards comfortable temperatures and drier conditions, October is a good time to visit Cheonan.
Cheonan Temperature in October
Min Temperature
9°C (48°F)
Max Temperature
21°C (70°F)
Chance of Rain
23%
Precipitation
58 mm (2.3 in)
Rainy days
7 days
Humidity
73%
Sunshine
215 hours
Percentage Sunshine
62%
Cheonan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cheonan - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cheonan typically drop from around 23°C (73°F) at the start of October to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 5°C (41°F) to 13°C (55°F).
Average temperatures in October
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 October
Historical weather records for Cheonan in October
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 October
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Cheonan.
- Cheonan recorded its highest October temperature of 29°C (84°F) on October 3, 2021.
- The coldest night in October in Cheonan was on October 29, 2002, with a minimum of -4°C (25°F).
Best Places in South Korea in October
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 October →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Cheonan in October
Comfortable temperatures call for an easy wardrobe in October. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Cheonan in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling10/10 -
Walking10/10 -
Barbeque9/10 -
Camping4/10 -
Outdoor sports10/10
Cheonan 3-Day Forecast
More climate data for Cheonan
Temperature Rainfall Sunshine Humidity
See the full Cheonan climate overview or explore weather in South Korea.
Popular in October
Where to go in October - average daytime high across popular destinations.
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