Daegu weather in September

September in Daegu: hot, soaked, with muggy air — fine if you can take 11 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Daegu🇰🇷 South Korea · Korea · City72
  1. 58Jan
  2. 67Feb
  3. 76Mar
  4. 85Apr
  5. 90May
  6. 75Jun
  7. 56Jul
  8. 59Aug
  9. 72Sep
  10. 83Oct
  11. 78Nov
  12. 63Dec

#7 of 12 months in Daegu · #914 of 1413 destinations to visit in September · comfort 72/100 (tier B)

Days
27°C
Nights
18°C
Wet days
11
Sun
7.1 h
Humidity
81%
Daylight
12 h
Daegu, South Korea
Photo: Khan ishaan · Pexels

Traveller notes on Daegu in September

Other months in Daegu

South Korea-forum threads on yellow dust season place the risk squarely across March into April, driven by wind patterns from China that make it genuinely unpredictable - the standing advice is to carry a mask from a convenience store or pharmacy just in case, since there's no way to know from a forecast alone whether a given week will be affected. Setting the dust aside, March itself is described as sunny most days as the country slowly warms toward spring, still cool enough that layers matter. Daegu's own record: 15C days feeling like 12C, 3C nights, 64mm of rain across 7.6 days, a late 4cm of snowfall still possible and 8.8 hours of sun. The number the dust discussion doesn't quite capture: AQI runs 75 here even on an ordinary March day, well before any dust event pushes it higher.
DustMaskSpringRegular · March · 1 month ago · Read more on Tripadvisor ↗
South Korea forum threads tracking cherry blossom timing note Daegu's blooms typically start around late March, meaning by mid-to-late April the blossoms have generally already fallen in this region - worth knowing before planning a bloom-chasing trip here specifically. On general April weather, posters described mostly clear days punctuated by brief but sometimes heavy rain showers, daytime highs reaching the upper 60s Fahrenheit by late April, and nights still cool enough to want a light layer even though a heavy jacket isn't necessary.
GyeongsangProvinceRegular · April · 1 month ago · Read more on Tripadvisor ↗
Forum posters cite late-November daytime temperatures in Daegu around 7-10C, with cold fronts capable of pushing overnight lows down to -2 or -3C - posters compare the general feel to a Sheffield December. Posters describe South Korea's November more broadly as ranging roughly 0-10C depending on time of day and how far into the month, consistently recommending thick jackets or coats with layers underneath. Posters generally describe November as sitting in an awkward gap season-wise, past peak autumn foliage but before any real snow, though the cool, dry weather itself stays comfortable for walking and sightseeing. Posters generally rate November as a genuinely chilly but manageable time to visit Daegu, proper winter-transition layers the main preparation needed.
Tripadvisor community · November · 1 month ago · Read more on Tripadvisor ↗
Daegu forum regulars, drawing on the broader Korea autumn conversation, split October cleanly: if you want warm weather, September is recommended; if you want to see autumn colors, the end of October/beginning of November is best — October itself sits as the genuine transition between the two. Daegu's own specific autumn draw is the Daegu Arboretum's chrysanthemum festival, running the second and third week and weekend of November, just past the target month, with regulars already praising the site's foliage through October. Standard regional framing applies: crisp air, comfortable temperatures, good conditions for both city sightseeing and countryside day trips. Our record: 20°C days, 10.9°C nights, 3.8 rain days and 8.6 hours of sun — mild and dry, matching the “genuine transition, foliage building toward its peak” read.
Tripadvisor community · October · 1 month ago · Read more on Tripadvisor ↗

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Daegu climate normals — September

Daytime high27°C / 80°F🥵 hot
Nighttime low18°C / 64°F
Feels like (high)29°C / 84°F
Rainfall187 mm / 7.4 in⛈ soaked
Rainy days11 days
Humidity81%💦 very humid
Dew point17°C / 63°F
Sunshine7.1 h/day
Daylight12.4 h
Wind11 km/h / 7 mph
Air quality (US AQI)60🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Daegu in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsChuseok, Chuseok in South Korea, school holidays in 2 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Daegu's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherDaegu's best weather comes in April, May and October — separate windows, not one continuous season.

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Best weatherFair weatherToughest weather

What's on in Daegu in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Holiday

    Chuseok

    24–26 SepHarvestClosuresCrowded

    The harvest holiday empties offices and fills the roads for three days as families visit ancestral graves. Museums and many restaurants close on Chuseok day; the parks and Palgongsan trails get busy. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Daegu — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Daegu?

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Daegu in September — FAQ

Is September a good time to visit Daegu?
September in Daegu: hot, soaked, with muggy air — fine if you can take 11 rainy days. It ranks #7 of 12 months for Daegu on SeasonMap's comfort score (72/100).
What is the weather like in Daegu in September?
In September, Daegu averages a daily high of 26.5°C and a low of 17.7°C, with about 187.3 mm of rain over roughly 11.3 rainy days.
What is the air quality in Daegu in September?
Daegu has a mean US Air Quality Index of about 60 in September.

Within 300 km: Busan's Chuseok on 24–26 Sep, and Seoul's Chuseok on 24–26 Sep.