Ido-dong in Fall
In fall (September, October and November), Ido-dong sees average daytime highs around 20°C and overnight lows near 17°C, with 314 mm of rain over about 27 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 26°C in early September to 13°C by late November. The sky is clear or mostly clear about 39% of the time across fall, and the air most often feels dry.
Fall is Ido-dong's best season of the year to visit on our travel score. For the whole year in context, see Ido-dong's year-round climate.
- Avg daytime high
- 20°C
- 2nd-warmest season
- Avg overnight low
- 17°C
- Rainfall
- 314 mm
- 27 wet days
- Avg wind
- 18 km/h
- Travel score
- 6.1
- best season of the year
- Months
- Sep · Oct · Nov
Temperature in Ido-dong in Fall
Over the season highs ease from about 26°C in early September to 13°C by late November.
A typical fall day in Ido-dong reaches about 20°C and drops to 17°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Ido-dong
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Ido-dong weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 8° / 5° | 73 | 11.6 | 2.6 | 10 | 1.1 |
| Feb | 8° / 5° | 64 | 9.3 | 1.7 | 10.8 | 1.5 |
| Mar | 11° / 7° | 95 | 10.3 | 0.4 | 11.7 | 2.9 |
| Apr | 15° / 11° | 102 | 8.9 | 0 | 12.8 | 4.6 |
| May | 19° / 15° | 109 | 8.8 | 0 | 13.7 | 6.2 |
| Jun | 22° / 19° | 189 | 11.6 | 0 | 14.2 | 6.1 |
| Jul | 26° / 24° | 184 | 12.1 | 0 | 14 | 6.2 |
| Aug | 27° / 25° | 168 | 13.7 | 0 | 13.2 | 5.9 |
| Sep | 24° / 22° | 165 | 11.1 | 0 | 12.2 | 6.7 |
| Oct | 20° / 17° | 79 | 6.8 | 0 | 11.2 | 6.9 |
| Nov | 15° / 12° | 70 | 8.8 | 0 | 10.3 | 4.7 |
| Dec | 10° / 7° | 68 | 11 | 1.1 | 9.8 | 2.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 39% of the time across fall.
Chance of precipitation in Fall
Ido-dong gets around 314 mm of rain over 27 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 18 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 42 min in early September to 10 hours by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.5 kWh/m².
Hazard calendar for Ido-dong
In fall, Ido-dong overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Ido-dong sits in the Pacific typhoon belt; the season peaks July–October.
Ido-dong's rainy season runs March–September, when most of the year's rain falls.
Is fall a good time to visit Ido-dong?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Ido-dong for sightseeing.
What to pack for Ido-dong in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Ido-dong sees daytime highs around 20°C and nights near 17°C. Worth packing: light clothes, a warm layer and rain gear. About 27 days see rain.
Sea temperature near Ido-dong in Fall
The nearest coast averages about 22°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 17 km away) is warmest in August at about 27°C and coldest in March near 14°C.
It's comfortable for a long swim from Jun 18 to Nov 4 — about 4.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 14 | 14 | 14 | 16 | 20 | 24 | 27 | 25 | 22 | 19 | 17 |
| Comfort | Cool | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Cool |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 14 | Bracing |
| May | 16 | Cool |
| Jun | 20 | Cool |
| Jul | 24 | Refreshing |
| Aug | 27 | Warm |
| Sep | 25 | Warm |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Ido-dong in Fall
Clear-sky midday UV across fall averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ido-dong peaks around July 16 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 3 | 4 | 6 | 7 | 8 | 8 | 10 | 8 | 9 | 6 | 4 | 3 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 6 | High |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 10 | Very high |
| Aug | 8 | Very high |
| Sep | 9 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in Ido-dong in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Ido-dong is worst in March — around 30 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (July, 13 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 21 | 25 | 30 | 29 | 23 | 18 | 13 | 13 | 14 | 15 | 18 | 16 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 21 | Moderate |
| Feb | 25 | Moderate |
| Mar | 30 | Moderate |
| Apr | 29 | Moderate |
| May | 23 | Moderate |
| Jun | 18 | Moderate |
| Jul | 13 | Moderate |
| Aug | 13 | Moderate |
| Sep | 14 | Moderate |
| Oct | 15 | Moderate |
| Nov | 18 | Moderate |
| Dec | 16 | Moderate |
Where is Ido-dong?
Ido-dong sits at 33.5°N, 126.5°E, 62 m above sea level, in South Korea. The nearest listed city is Jeju, 1.0 km away.
Topography around Ido-dong
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ido-dong.
Within 3 km, the terrain around Ido-dong has only modest variations in elevation — a maximum elevation change of 249 m around an average of 77 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,922 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,915 m.
The land around Ido-dong is covered by artificial surfaces (57%) and trees (28%) within 3 km, water (42%) and trees (41%) within 16 km, and water (88%) within 80 km.
South Korea travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 220 V · 60 Hz
- Prices
- ≈ 57% of US
- price level, 2025
- GDP per capita
- $36,227
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.5
- per 100k, 2023
- Road deaths
- 8.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 522
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Ido-dong (33.4978°, 126.5272°, elevation 62 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.