HAN RIVER · WATER TEMPERATUREWhile the sun crosses the river,the water is still night

2026.09.27 · 05:23 KST

23.9℃

Today's warmth spreads gently across the water.

Tancheon · 2026.09.27 · 05:00 (KST)

“While there's life, there's hope.” — Cicero

What is the Han River water temperature now?

Seoul’s published observations for the Han River and its tributaries are: Tancheon 23.9°C (2026.09.27 · 05:00 KST); Jungnang 24.5°C (2026.09.27 · 05:00 KST); Anyangcheon 23.8°C (2026.09.27 · 05:00 KST); Seonyu 24.2°C (2026.09.27 · 05:00 KST). Each value was measured at the time shown; it is not a river-wide average or the current temperature at every location.

The latest published observations from Seoul’s automatic water-quality monitoring network. Temperatures vary between the river and its tributaries; these are not a river-wide average.

StationWater temperatureObserved at
Tancheon23.9°C2026.09.27 · 05:00
Jungnang24.5°C2026.09.27 · 05:00
Anyangcheon23.8°C2026.09.27 · 05:00
Seonyu24.2°C2026.09.27 · 05:00

These provisional readings are published hourly. Maintenance or publication delays can leave older readings in place; compare each observation time with the current time.

Source: Seoul Open Data Plaza — Han River and major tributary water-quality readings

Han River Water Temperature is an independent service presenting Seoul’s public data, not an official Seoul government website. Measurements come from Seoul’s automatic water-quality monitoring network; the original dataset is linked above.

Han River water temperature FAQ

How is the Han River water temperature measured?
Seoul publishes hourly observations from its automatic water-quality monitoring network through the Seoul Open Data Plaza. This site presents each station’s published reading and observation time.
Is it safe to swim in the Han River?
Water temperature alone cannot determine whether entering the river is safe. Check restricted and hazardous areas and follow on-site guidance. Swim only in managed facilities or programs and follow safety staff instructions.
How does the Han River water temperature change by season?
Water temperature varies with the season, monitoring location, weather, and water discharge. Check the table above for each station’s latest published observation and its measurement time.
How often is this site's data updated?
The site displays the latest hourly value published by Seoul. Check the observation time in the table for the exact reference time. Unavailable values are marked as under maintenance or missing. An older reading can remain during a delay, so always check its observation time.

TODAY'S RECORD · SHARE

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  1. A day not yet given a namespreads slowly across the ripples
  2. At the touch of the first wind,the sleeping shimmer opens
  3. One step ahead of the city,the river is already crossing into morning
  4. Pushing up against the edge of night,the river is the first to turn blue
  5. Where the mist has lifted,light rises still wet
  6. The morning has not passed you byit is all right to begin slowly today

Words left by the river

Read the messages gathered at the water's edge.