🔎 Weather for a date or period
Actual day-by-day weather for the selected period (ERA5). Up to 1 year.
📆 On this day before
Data for previous years is being prepared.
🏆 Hottest and coldest day in Seoul (over the full observation series)
+39°
Hottest day
July 29, 2025
-27°
Coldest day
January 19, 1958
🗓 Monthly climate in Seoul (10-year normals)
| Month | Day | Night | Precip |
|---|---|---|---|
| January | +2° | -7° | 18 mm |
| February | +5° | -5° | 26 mm |
| March | +12° | 0° | 40 mm |
| April | +18° | +6° | 64 mm |
| May | +23° | +12° | 106 mm |
| June | +27° | +17° | 121 mm |
| July | +29° | +22° | 310 mm |
| August | +29° | +22° | 260 mm |
| September | +25° | +17° | 131 mm |
| October | +19° | +9° | 76 mm |
| November | +11° | +2° | 59 mm |
| December | +3° | -5° | 26 mm |
🕰 Weather in Seoul September 8 in past years
+30°
Heat record · 2024
+13°
Cold record · 1953
📜
This day in history. The hottest September 8 in Seoul was in 2024 (+30°), the coldest in 1953 (+13°). 86 years of observations. Normal for September: day +25°, night +17°.
📒 For school and home
Weather diary
ready-made observation table for a month — for school
Weather for the month
September calendar: forecast + climate normal
City water
Han +26° — where to swim
FAQ about the weather archive in Seoul ❓
What was the weather in Seoul on a specific date?
Pick a date or range in the form above — we show actual day-by-day weather (ERA5 reanalysis, up to a year back). For today’s date in past years see “On this day before”.
Hottest and coldest day in the history in Seoul?
Heat record — +39° (July 29, 2025), cold record — -27° (January 19, 1958). Observations over the full available series.
What's the typical weather in Seoul in September?
On average +25° by day, +17° at night, precipitation about 131 mm (ERA5 climate normal).
Since what year is the weather archive in Seoul kept?
Climate normals and records come from the ERA5 reanalysis. Actual day-by-day weather is available for the last year.
Climate and weather archive in Seoul
Monthly climate normals in Seoul (average day and night temperatures, precipitation) are computed from the ERA5 reanalysis. The observation archive accrues from launch. Data: Open-Meteo (ERA5).