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Cheonan Weather in May
May in Cheonan brings high temperatures, with highs of 26°C (79°F) and nights dropping to 13°C (55°F). Rainfall is on the higher side this month, averaging around 88 mm (3.5 in), so keep a rain jacket handy.
Rainfall in Cheonan in May
Based on our climate data of the past 30 years, about 8 days of rain are anticipated, with 88 mm (3.5 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Cheonan in May
May is one of the better months to visit Cheonan. Expect 26°C (79°F) during the day and 13°C (55°F) at night. This kind of day-to-night contrast is typical for this time of year. Nights cool down to 13°C (55°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Cheonan in May
Expect a lot of sunshine this month, with about 248 hours of sun. These sunny conditions add to the overall experience.If you're inclined towards comfortable temperatures and drier conditions, May is a good time to visit Cheonan.
Cheonan Temperature in May
Min Temperature
13°C (55°F)
Max Temperature
26°C (79°F)
Chance of Rain
27%
Precipitation
88 mm (3.5 in)
Rainy days
8 days
Humidity
65%
Sunshine
248 hours
Percentage Sunshine
56%
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 rise from around 22°C (72°F) at the start of May to approximately 26°C (79°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 15°C (59°F).
Average temperatures in May
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 May
Historical weather records for Cheonan in May
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 May
According to our 50 years of weather records for Cheonan, the following extremes were recorded between 1976 and 2026.
- Cheonan recorded its highest May temperature of 33°C (91°F) on May 31, 2014.
- Cheonan experienced its chilliest May day on May 4, 1990, reaching only 13°C (55°F).
- The coldest night in May in Cheonan was on May 1, 2010, with a minimum of 3°C (37°F).
Best Places in South Korea in May
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 May →
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 May
Warm temperatures in May make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. 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 May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping8/10 -
Outdoor sports7/10
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 May
Where to go in May - average daytime high across popular destinations.
Seoul
24°C (75°F) Jeonju25°C (77°F) Suwon24°C (75°F) Gyeongju25°C (77°F) Seogwipo
22°C (72°F) Incheon21°C (70°F) Busan22°C (72°F) Jeju20°C (68°F) Bucket list
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