January 2° · ☂ 3 February 5° · ☂ 3 March 12° · ☂ 5 April 18° · ☂ 7 ★ May23° · ☂ 7 June 28° · ☂ 7 July 30° · ☂ 14 August 30° · ☂ 11 ★ September27° · ☂ 7 October 20° · ☂ 6 November 12° · ☂ 6 December 4° · ☂ 5 Seoul in April:cool and fresh, Seoul, South Korea · Records from 2006 to 2025. Not a forecast.
Mean high 18° Hottest day 30° (2016)
Mean low 9° Coldest night −0.3° (2010)
Rain days 7 days 2-10 by year
Rainfall 74mm Daylight 12.6 → 13.7 h
Seoul's 12 months i Best: May and September
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Sightseeing on foot Goodmild
Humidity 63% 0 muggy days
Clear days 9 days 8 overcast days
Mean wind 10 km/h Rarely windy
Sunrise / sunset (15th) 05:58 / 19:07 Daylight 12.6 → 13.7 h
Seoul in April By KMA normals, Seoul's cherry trees open around April 8 and reach full bloom two days later, though recent years have often been earlier. Yeouido's Yunjung-ro is closed to cars and packed during the blossom festival, so take subway line 9 or 5. Yellow dust is common now and can turn the sky hazy.
Neither hot nor cold: 18°C by day and 9°C after dark. Spending hours on foot was easy. Showers came now and then, about 7 rain days in all, and most of the month stayed dry. Counts moved moderately between years: 2 in 2020, 10 in 2015.
About 6 nights a month dipped under 5°C, cold enough to want a jacket for the walk back. Not every year was typical: 2024 ran 3.6°C warmer than the mean, with highs of 22.0°C. Cold snaps happened: the record low for April was −0.3°C, set in 2010.
How long it rained On a rainy day it rained for about 5.4 hours. Rain came at any time of day.
0 3 6 9 12 15 18 21
Typhoons i Typhoons: July to October
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
April 1 Thursday 1 rain in 2 of 20 yrs 2/20 16° 5° April 2 Friday 2 rain in 4 of 20 yrs 4/20 16° 6° April 3 Saturday 3 rain in 5 of 20 yrs 5/20 16° 6° 1-3 rain on 18% of days 16° 6°
April 4 Sunday 4 rain in 4 of 20 yrs 4/20 16° 7° April 5 Monday 5 rain in 4 of 20 yrs 4/20 16° 6° April 6 Tuesday 6 rain in 4 of 20 yrs 4/20 16° 6° April 7 Wednesday 7 rain in 4 of 20 yrs 4/20 16° 7° April 8 Thursday 8 rain in 1 of 20 yrs 1/20 17° 6° April 9 Friday 9 rain in 2 of 20 yrs 2/20 18° 7° April 10 Saturday 10 rain in 6 of 20 yrs 6/20 18° 9° 4-10 rain on 18% of days 17° 7°
April 11 Sunday 11 rain in 3 of 20 yrs 3/20 19° 9° April 12 Monday 12 rain in 3 of 20 yrs 3/20 19° 8° April 13 Tuesday 13 rain in 6 of 20 yrs 6/20 17° 8° April 14 Wednesday 14 rain in 8 of 20 yrs 8/20 17° 8° April 15 Thursday 15 rain in 4 of 20 yrs 4/20 18° 7° April 16 Friday 16 rain in 4 of 20 yrs 4/20 19° 8° April 17 Saturday 17 rain in 4 of 20 yrs 4/20 19° 8° 11-17 rain on 23% of days 18° 8°
April 18 Sunday 18 rain in 4 of 20 yrs 4/20 19° 9° April 19 Monday 19 rain in 4 of 20 yrs 4/20 20° 10° April 20 Tuesday 20 rain in 7 of 20 yrs 7/20 19° 10° April 21 Wednesday 21 rain in 5 of 20 yrs 5/20 20° 11° April 22 Thursday 22 rain in 7 of 20 yrs 7/20 19° 11° April 23 Friday 23 rain in 5 of 20 yrs 5/20 19° 10° April 24 Saturday 24 rain in 4 of 20 yrs 4/20 20° 10° 18-24 rain on 26% of days 20° 10°
April 25 Sunday 25 rain in 7 of 20 yrs 7/20 20° 10° April 26 Monday 26 rain in 5 of 20 yrs 5/20 20° 10° April 27 Tuesday 27 rain in 3 of 20 yrs 3/20 19° 10° April 28 Wednesday 28 rain in 3 of 20 yrs 3/20 20° 10° April 29 Thursday 29 rain in 6 of 20 yrs 6/20 20° 11° April 30 Friday 30 rain in 4 of 20 yrs 4/20 21° 12°
25-30 rain on 23% of days 20° 10°
1-3 rain on 18% of days 16° 6° 4-10 rain on 18% of days 17° 7° 11-17 rain on 23% of days 18° 8° 18-24 rain on 26% of days 20° 10° 25-30 rain on 23% of days 20° 10°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
April 1 Saturday 1 rain in 2 of 20 yrs 2/20 16° 5° April 1 rain on 10% of days 16° 5°
April 2 Sunday 2 rain in 4 of 20 yrs 4/20 16° 6° April 3 Monday 3 rain in 5 of 20 yrs 5/20 16° 6° April 4 Tuesday 4 rain in 4 of 20 yrs 4/20 16° 7° April 5 Wednesday 5 rain in 4 of 20 yrs 4/20 16° 6° April 6 Thursday 6 rain in 4 of 20 yrs 4/20 16° 6° April 7 Friday 7 rain in 4 of 20 yrs 4/20 16° 7° April 8 Saturday 8 rain in 1 of 20 yrs 1/20 17° 6° 2-8 rain on 19% of days 16° 6°
April 9 Sunday 9 rain in 2 of 20 yrs 2/20 18° 7° April 10 Monday 10 rain in 6 of 20 yrs 6/20 18° 9° April 11 Tuesday 11 rain in 3 of 20 yrs 3/20 19° 9° April 12 Wednesday 12 rain in 3 of 20 yrs 3/20 19° 8° April 13 Thursday 13 rain in 6 of 20 yrs 6/20 17° 8° April 14 Friday 14 rain in 8 of 20 yrs 8/20 17° 8° April 15 Saturday 15 rain in 4 of 20 yrs 4/20 18° 7° 9-15 rain on 23% of days 18° 8°
April 16 Sunday 16 rain in 4 of 20 yrs 4/20 19° 8° April 17 Monday 17 rain in 4 of 20 yrs 4/20 19° 8° April 18 Tuesday 18 rain in 4 of 20 yrs 4/20 19° 9° April 19 Wednesday 19 rain in 4 of 20 yrs 4/20 20° 10° April 20 Thursday 20 rain in 7 of 20 yrs 7/20 19° 10° April 21 Friday 21 rain in 5 of 20 yrs 5/20 20° 11° April 22 Saturday 22 rain in 7 of 20 yrs 7/20 19° 11° 16-22 rain on 25% of days 19° 10°
April 23 Sunday 23 rain in 5 of 20 yrs 5/20 19° 10° April 24 Monday 24 rain in 4 of 20 yrs 4/20 20° 10° April 25 Tuesday 25 rain in 7 of 20 yrs 7/20 20° 10° April 26 Wednesday 26 rain in 5 of 20 yrs 5/20 20° 10° April 27 Thursday 27 rain in 3 of 20 yrs 3/20 19° 10° April 28 Friday 28 rain in 3 of 20 yrs 3/20 20° 10° April 29 Saturday 29 rain in 6 of 20 yrs 6/20 20° 11° 23-29 rain on 24% of days 20° 10°
April 30 Sunday 30 rain in 4 of 20 yrs 4/20 21° 12°
April 30 rain on 20% of days 21° 12°
April 1 rain on 10% of days 16° 5° 2-8 rain on 19% of days 16° 6° 9-15 rain on 23% of days 18° 8° 16-22 rain on 25% of days 19° 10° 23-29 rain on 24% of days 20° 10° April 30 rain on 20% of days 21° 12°
Tap another date to change
2006 none
2007 1mm
2008 none
2009 none
2010 none
2011 none
2012 none
2013 3mm
2014 none
2015 11mm
2016 none
2017 5mm
2018 12mm
2019 1mm
2020 none
2021 none
2022 1mm
2023 none
2024 none
2025 12mm
Holidays in April (2027) · No public holidays this month.
Day by day temperature i 4° 13° 22° 31° 1 8 15 22 29 30
Your trip dates, the past 20 years Trip dates April 1 (Thu) 2 (Fri) 3 (Sat) 4 (Sun) 5 (Mon) 6 (Tue) 7 (Wed) 8 (Thu) 9 (Fri) 10 (Sat) 11 (Sun) 12 (Mon) 13 (Tue) 14 (Wed) 15 (Thu) 16 (Fri) 17 (Sat) 18 (Sun) 19 (Mon) 20 (Tue) 21 (Wed) 22 (Thu) 23 (Fri) 24 (Sat) 25 (Sun) 26 (Mon) 27 (Tue) 28 (Wed) 29 (Thu) 30 (Fri) ~ April 1 (Thu) 2 (Fri) 3 (Sat) 4 (Sun) 5 (Mon) 6 (Tue) 7 (Wed) 8 (Thu) 9 (Fri) 10 (Sat) 11 (Sun) 12 (Mon) 13 (Tue) 14 (Wed) 15 (Thu) 16 (Fri) 17 (Sat) 18 (Sun) 19 (Mon) 20 (Tue) 21 (Wed) 22 (Thu) 23 (Fri) 24 (Sat) 25 (Sun) 26 (Mon) 27 (Tue) 28 (Wed) 29 (Thu) 30 (Fri) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Trip rain days Month rain days Tap a date to start, tap another to end. Each cell is that date in one year. '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 '19 '20 '21 '22 '23 '24 '25
of 20 Dates outside your trip are dimmed.
One row per year, one cell per day. 2020 had 2 rain days, 2015 had 10.
What to pack A long-sleeve top and one thin layer cover highs of 18°C. After dark, a proper jacket was welcome. On average 11 days still reached 20°C and 6 nights still dipped below 5°C.
With 7 rain days, a pocket umbrella was insurance rather than a daily tool.
Common questions Does it rain a lot in Seoul in April? Over the past 20 years April averaged 7 rain days (1 mm or more) out of 30. Individual years ran from 2 in the driest to 10 in the wettest.
What should I wear in Seoul in April? Days averaged 18°C and nights 9°C. Pack a compact umbrella and a light layer for the evenings.
Is April a good time to visit Seoul? On warmth and rain days alone, Seoul's easiest months were May and September. April ranked 5 of 12.
How many clear days does Seoul get in April? About 9 clear days (under 30% cloud on average) and 8 overcast days (80% or more).
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