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.
Siheung Weather in April
With daytime temperatures of 16°C (61°F) and nighttime lows of 7°C (45°F), April in Siheung brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 77 mm (3 in) falls on average.
Rainfall in Siheung in April
Typically, you can expect about 8 days of rain this month, with 77 mm (3 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Siheung in April
In April, Siheung sees moderate temperatures, with highs of 16°C (61°F). Nights drop to around 7°C (45°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Siheung in April
Expect sunny days throughout the month, with an estimated 222 hours of sunshine. This makes it a pleasant time to visit Siheung.For Siheung itself, May and October generally stand out with 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.
Siheung Temperature in April
Min Temperature
7°C (45°F)
Max Temperature
16°C (61°F)
Chance of Rain
27%
Precipitation
77 mm (3 in)
Rainy days
8 days
Humidity
64% *
Sunshine
222 hours *
Percentage Sunshine
*
* Data from: Incheon, South Korea (13 KM, 8 Miles).
Siheung Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Siheung - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Siheung 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 Siheung in April
Browse day-by-day weather records for Siheung spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Siheung historical weather extremes in April
According to our 50 years of weather records for Siheung, the following extremes were recorded between 1976 and 2026.
- On April 30, 2005, temperatures climbed to 30°C (86°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).
- The lowest overnight temperature recorded in April was -5°C (23°F) (April 1, 1991).
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 Siheung in April
Pack for changing conditions in Siheung in April. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Siheung 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
Siheung 3-Day Forecast
More climate data for Siheung
Temperature Rainfall Sunshine Humidity
See the full Siheung 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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