Mud festival in South Korea
In July, the peaceful seaside town of Boryeong turned into a chaos of mud for 9 days. We recommend putting this festival on your bucket list.
Incheon Weather in April
With daytime temperatures of 16°C (61°F) and nighttime lows of 7°C (45°F), April in Incheon brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 73 mm (2.9 in) falls on average.
Rainfall in Incheon in April
You can typically expect 8 days of rain this month, averaging around 73 mm (2.9 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Incheon in April
In April, Incheon gets moderate temperatures, with highs of 16°C (61°F). Nights cool to around 7°C (45°F). The difference between afternoon and evening temperatures is usually noticeable. At 7°C (45°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Incheon in April
Enjoy a sunny month with about 222 hours of sunshine, the clear skies make Incheon even more beautiful.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May and October typically offer the best weather for Incheon.
Incheon Temperature in April
Min Temperature
7°C (45°F)
Max Temperature
16°C (61°F)
Chance of Rain
26%
Precipitation
73 mm (2.9 in)
Rainy days
8 days
Humidity
64%
Sunshine
222 hours
Percentage Sunshine
Incheon Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Incheon - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Incheon typically rise from around 15°C (59°F) at the start of April to approximately 20°C (68°F) by the end. Nights are cold, with lows typically ranging from 3°C (37°F) to 10°C (50°F).
Average temperatures in April
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 April
Historical weather records for Incheon in April
Browse day-by-day weather records for Incheon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Incheon historical weather extremes in April
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Incheon.
- On April 30, 2005, temperatures climbed to 31°C (88°F), marking the warmest April day on record.
- The coldest April day was on April 3, 1983, with a maximum of 6°C (43°F).
- Incheon registered its coldest April night on April 1, 1991, with temperatures dropping to -6°C (21°F).
Best Places in South Korea in April
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 April →
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 Incheon in April
The weather can swing between comfortable and chilly in April, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Incheon in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Camping4/10 -
Outdoor sports9/10
Incheon 3-Day Forecast
More climate data for Incheon
Temperature Rainfall Sunshine Humidity
See the full Incheon climate overview or explore weather in South Korea.
Popular in April
Where to go in April - average daytime high across popular destinations.
Gyeongju
20°C (68°F) Jeonju19°C (66°F) Seoul19°C (66°F) Suwon19°C (66°F) Busan
18°C (64°F) Seogwipo18°C (64°F) Jeju16°C (61°F) Incheon16°C (61°F) Bucket list
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Mud festival in South Korea
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