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.
Ansan Weather in April
Ansan in April sees moderate daytime temperatures of 16°C (61°F) and nighttime lows of 7°C (45°F). Rainfall is fairly high this month at around 78 mm (3.1 in), so pack a rain jacket to stay dry.
Rainfall in Ansan in April
Historically, the month has about 8 days of rain, averaging 78 mm (3.1 in) in total. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Ansan in April
Ansan in April gets highs of 16°C (61°F) during the day and drops to 7°C (45°F) at night. The difference between afternoon and evening temperatures is usually noticeable. With lows around 7°C (45°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Ansan in April
The month enjoys around 222 hours of sunshine, creating mostly sunny days with good weather conditions.Should you favor a climate that's both dry and comfortably warm, October typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Ansan Temperature in April
Min Temperature
7°C (45°F)
Max Temperature
16°C (61°F)
Chance of Rain
27%
Precipitation
78 mm (3.1 in)
Rainy days
8 days
Humidity
64% *
Sunshine
222 hours *
Percentage Sunshine
*
* Data from: Incheon, South Korea (18 KM, 11 Miles).
Ansan Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ansan - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ansan 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 Ansan in April
Browse day-by-day weather records for Ansan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ansan historical weather extremes in April
Our historical data for Ansan spans 1976 to 2026, revealing these weather extremes.
- The hottest April day on record in Ansan reached 31°C (88°F) (April 30, 2005).
- The coldest April day was on April 3, 1983, with a maximum of 6°C (43°F).
- The coldest night in April in Ansan was on April 1, 1991, with a minimum of -5°C (23°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 Ansan 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 Ansan 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
Ansan 3-Day Forecast
More climate data for Ansan
Temperature Rainfall Sunshine Humidity
See the full Ansan 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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