Seoul is at its best from April to May and September to October.
It is busiest and priciest in April to May and October.
Expect the most rain in June to July.
Here is every month at a glance, the dates to plan around, and flights from five Indian cities.
Seoul month by month
Average highs and lows, rain, the season and what's on, for the next twelve months.
| Month | Weather | Season | What's on |
|---|---|---|---|
| October 2026Best weather | 18° / 13°some rain, 79 mm | Peak | China Golden WeekDussehra |
| November 2026 | 12° / 6°some rain, 52 mm | Shoulder | Diwali |
| December 2026 | 4° / -2°mostly dry, 31 mm | Shoulder | Christmas and New Year |
| January 2027 | 2° / -3°dry, 22 mm | Off-season | Christmas and New YearRepublic Day weekend |
| February 2027 | 3° / -2°mostly dry, 25 mm | Off-season | Seollal |
| March 2027 | 7° / 3°mostly dry, 42 mm | Shoulder | HoliGood Friday weekend |
| April 2027Best weather | 12° / 8°some rain, 65 mm | Peak | Indian summer holidays |
| May 2027Best weather | 17° / 13°rainy spells, 108 mm | Peak | Indian summer holidays |
| June 2027 | 22° / 18°rainy spells, 109 mm | Shoulder | Indian summer holidays |
| July 2027 | 26° / 23°very wet, 273 mm | Shoulder | Monsoon (jangma), roughly late June to late July: heavy rain and humidity. |
| August 2027 | 28° / 24°wet, 241 mm | Shoulder | Hot, humid summer, around 30°C. |
| September 2027Best weather | 24° / 20°wet, 153 mm | Shoulder | Chuseok |
Dates to plan around
Festivals, holidays and closures in Seoul, and the Indian holiday rushes that raise fares.
- 1–7 OctChina Golden WeekChina's National Day holiday: mainland travellers pack Hong Kong, Macau and the big Asian hotspots, and hotel prices rise.
- 20 OctDussehraDussehra falls on Tuesday 20 Oct: many take the Monday off for a four-day weekend, so short trips abroad cost more that week.
- 6–10 NovDiwaliDiwali (Lakshmi Puja on Sunday 8 Nov): the busiest travel week of the autumn. Fares out of India rise, and short trips to Dubai, Bangkok and Singapore book up.
- 19 Dec – 3 JanChristmas and New YearThe priciest fortnight of the year to fly out of India: school holidays, Christmas and New Year all at once. Book early or go just before or after.
- 23–26 JanRepublic Day weekendRepublic Day falls on Tuesday 26 Jan: take the Monday off and it's a four-day weekend, so short trips abroad book up.
- 6–9 FebSeollalKorean Lunar New Year (holidays 6-9 Feb): people travel home, trains sell out and some shops close.
- 22–23 MarHoliHoli (22-23 Mar) and Good Friday (26 Mar) fall in the same week, a favourite week for short trips abroad, so fares rise.
- 26–28 MarGood Friday weekendGood Friday (26 Mar) makes a long weekend in India, just after Holi.
- 15 Apr – 15 Jun · expectedIndian summer holidaysSchool holidays (roughly mid-April to mid-June, varying by state): outbound family travel peaks and fares climb, especially to the Gulf, Southeast Asia and Europe.
- 14–16 SepChuseokKorea's harvest festival: people travel home, trains sell out and some shops close.
- 27–31 OctDiwaliDiwali (Lakshmi Puja on Friday 29 Oct): the busiest travel week of the autumn. Fares out of India rise, and short trips abroad book up.
Flights to Seoul from India
The cheapest fare our scanner has seen from each city in the last two weeks. Open a route to price every month live.
Good to know
When is the best time to visit Seoul?
The best weather in Seoul is from April to May and September to October. Cherry blossoms in early April along Yeouido and Seokchon Lake. Peak season, with the most visitors and the highest hotel prices, is April to May and October. The quietest months are January to February.
When is the rainy season in Seoul?
The wettest months are June to July. Monsoon (jangma), roughly late June to late July: heavy rain and humidity.
When is Seoul most crowded?
Peak season is April to May and October, when stays cost the most and the sights are busiest.
What is the cheapest way to fly to Seoul from India?
Of the Indian cities we track, Delhi has the lowest fare right now: ₹44,107 (return, 8 nights) for Wed 20 Jan.
How hot does Seoul get?
The hottest month is August, with average highs of 28°C; the coolest nights come in January, around -3°C.