The rice cakes are ready and everyone has chosen a wish, but the news says Chuseok moon viewing may be difficult. Has the Moon gone on holiday? Its timetable and the curtain of clouds are separate. Distinguish moonrise, lunar phase and actual visibility, and apparently conflicting headlines become easier to read.
Sources were checked at 19:07 KST on September 23, 2026. All times below are Korean time. This guide prepares for Chuseok on September 25; it is not tonight’s moonrise table.
Key points
- Seoul’s September 25 moonrise is 17:34 KST. The time the Moon rises and the time you can see it through clouds can differ.
- The exact full Moon occurs at 01:49 KST on September 27, a different event from Chuseok moonrise.
- KMA expects clouds and rain to make Chuseok-night viewing difficult. Recheck local forecasts and access conditions before leaving.
Today’s interest: rising is different from being visible
YTN’s report, published today at 16:42 and updated at 16:44, forecast difficult Chuseok-night viewing. When checked after 19:00, it was second in YTN’s most-viewed Naver stories, with a displayed 17:00–18:00 measurement window. That is a publisher-specific readership ranking, not an overall search ranking. YTN report
Our question is practical: which date and place should you look up, and what else must you check before planning a viewing outing? Use this sequence before travelling far on the strength of a moonrise time alone.
1. 17:34 is Seoul moonrise; 01:49 belongs to another date
KASI’s September 22 announcement gives Seoul moonrise as 17:34 on September 25, with the Moon highest that day at 23:31. The exact full Moon is 01:49 on September 27: the phase when the Moon lies opposite the Sun as seen from Earth. KASI announcement
Do not combine those three numbers into one “best viewing time.” Moonrise concerns the local horizon; the highest point concerns the Moon’s position in that day’s sky; full Moon concerns its phase. The September 27 phase time does not make a September 25 family outing a scheduling mistake.
NASA explains that moonlight is reflected sunlight and that the fraction of the illuminated side we see changes as the Moon orbits. It can look full for several days around full Moon. It does not switch on and off like a lamp at one precise minute. NASA’s phase guide
Four checks before Moon viewing
Read the timetable, then check the real sky.
- 01RiseSeptember 25 · Seoul 17:34
- 02HeightSeptember 25 · Seoul highest 23:31
- 03PhaseSeptember 27 · full Moon 01:49
- 04WeatherCheck the latest local forecast
2. Do not take Seoul’s timetable to Busan unchanged
These four cities are selected from KASI’s announcement. The calculations use sea level, and rise and set refer to different dates. See the announcement above for other cities and conditions.
| City | Moonrise, September 25 | Moonset, September 26 |
|---|---|---|
| Seoul | 17:34 | 05:38 |
| Daejeon | 17:32 | 05:36 |
| Gwangju | 17:34 | 05:39 |
| Busan | 17:25 | 05:29 |
Busan’s rise is nine minutes earlier than Seoul’s, calculated by subtracting the two listed times. That says nothing about better weather or guaranteed visibility. A table of moonrise differences cannot rank the best viewing destinations.
Mountains and buildings can obstruct a real site’s view. Check opening hours, the route and the sightline before setting a family meeting simply for the listed minute. This guide does not calculate first visibility for the terrain at a specific spot.
3. Read this year’s forecast as “hard to see”
KMA’s September 22 briefing expected thick cloud on September 25 at night and rain reaching central Korea late that night to hinder viewing. It cautioned that rain timing and coverage could change and called for checking updated information. KMA holiday outlook
Plan for a Moon that may rise without a clear line of sight, rather than a date with no Moon. A forecast describes expected atmospheric conditions; moonrise describes a celestial event. Both announcements can be correct because they answer different questions.
Before leaving, select your actual destination on KMA Weather Nuri and check the latest issue time, cloud, rain, wind and warnings. An older news screenshot is not an updated forecast. This guide promises neither a brief clearing nor a particular viewing success rate.
4. Send three conditions to the family chat
Here is our suggested planning message: “We’ll decide whether to leave after checking the local forecast. Let’s meet at an accessible nearby place, and switch to an indoor Moon activity if the weather is poor.” This is an example for arranging your own outing, not an event announcement.
| Detail to agree | Question | What to change if needed |
|---|---|---|
| Date and place | Which city and space on September 25? | Recheck the timetable for a different city |
| Weather and sightline | What do the latest forecast and site show? | Change plans for severe weather or closures |
| Travel and return | Have you checked entry, transport and return times? | Agree when to head home rather than keep waiting |
There is no need to enter a closed rooftop, breakwater or dark slope to see the Moon. Choose a nearby permitted place and a safe route home first. A comfortable family outing matters more than securing one photograph.
5. A small observation game even if clouds win
With children, divide a page into “prediction” and “observation.” Record date, city and moonrise under prediction; under observation, note the actual check time, clouds and whether the Moon was visible. If you could not see it, record that. A little science notebook does not require turning every attempt into a success.
If you try again days later, look up that date’s moonrise instead of reusing September 25. Add the date and location when sharing photos so an old image is not mistaken for tonight’s sky.
- Distinguish September 25 from any other observing date.
- Check the destination’s moonrise table and current forecast separately.
- Keep moonrise, highest position and exact full Moon distinct.
- Check access restrictions and return plans; change the outing if weather is poor.
Moon viewing is not a test of catching one exact minute. Understand the timetable and enjoy what the sky allows. The diagram is an editorial illustration, not an observation reproducing actual lunar size, altitude or cloud cover.