Icheon Weather in May
May in Icheon typically sees daytime highs of 25°C (77°F) and nighttime lows of 12°C (54°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Icheon in May
Climate statistics over the past 30 years suggest around 8 days of rain, with 101 mm (4 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Icheon in May
In May, expect high temperatures in Icheon, with highs of 25°C (77°F) and lows of 12°C (54°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Icheon in May
There are approximately 225 hours of sunshine this month, resulting in mostly clear days.If you prefer enjoying temperate temperatures and rain-free days, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 Icheon's climate page.
Icheon Temperature in May
Min Temperature
12°C (54°F)
Max Temperature
25°C (77°F)
Chance of Rain
26%
Precipitation
101 mm (4 in)
Rainy days
8 days
Humidity
64% *
Sunshine
225 hours *
Percentage Sunshine
51% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Icheon 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 for Icheon in May
Browse day-by-day weather records for Icheon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Icheon historical weather extremes in May
Based on weather observations in Icheon between 1976 and 2026, these are the recorded extremes during May.
- The warmest day in May was on May 31, 2014, with a maximum of 33°C (91°F).
- On May 4, 1990, Icheon saw its coldest May day with temperatures maxing out at 13°C (55°F).
- Icheon registered its coldest May night on May 1, 2010, with temperatures dropping to 2°C (36°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 →
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tolerable
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What to Wear in Icheon in May
For Icheon in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Icheon in May
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 Icheon's climate page.
Temperature Rainfall Sunshine Humidity
See the full Icheon climate overview or explore weather in South Korea.
