Ganghwa-gun in Fall
In fall (September, October and November), Ganghwa-gun sees average daytime highs around 19°C and overnight lows near 11°C, with 214 mm of precipitation over about 19 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 27°C in early September to 8°C by late November. The sky is clear or mostly clear about 47% of the time across fall, and the air most often feels dry.
Fall is Ganghwa-gun's 2nd-best season to visit on our travel score. For the whole year in context, see Ganghwa-gun's year-round climate.
- Avg daytime high
- 19°C
- 2nd-warmest season
- Avg overnight low
- 11°C
- Precipitation
- 214 mm
- 19 wet days
- Avg wind
- 10 km/h
- Travel score
- 5.8
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Ganghwa-gun in Fall
Over the season highs ease from about 27°C in early September to 8°C by late November.
A typical fall day in Ganghwa-gun reaches about 19°C and drops to 11°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Ganghwa-gun
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 14 that feel at or below 0°C.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Ganghwa-gun 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 | 2° / -6° | 17 | 3.5 | 2.1 | 9.7 | 0.0 |
| Feb | 4° / -4° | 23 | 3.8 | 1.5 | 10.5 | 0.1 |
| Mar | 9° / 1° | 33 | 5.2 | 0.7 | 11.7 | 2.3 |
| Apr | 16° / 7° | 63 | 7 | 0 | 12.9 | 5.3 |
| May | 21° / 13° | 96 | 7.7 | 0 | 14 | 6.9 |
| Jun | 25° / 18° | 120 | 8.7 | 0 | 14.6 | 6.9 |
| Jul | 27° / 22° | 303 | 15.3 | 0 | 14.3 | 5.4 |
| Aug | 29° / 23° | 251 | 14.2 | 0 | 13.5 | 5.2 |
| Sep | 25° / 18° | 116 | 6.9 | 0 | 12.3 | 7.2 |
| Oct | 19° / 11° | 52 | 5.1 | 0 | 11 | 7.0 |
| Nov | 11° / 3° | 47 | 7.1 | 0.4 | 10 | 3.1 |
| Dec | 4° / -3° | 22 | 4.7 | 1.1 | 9.4 | 0.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 47% of the time across fall.
Chance of precipitation in Fall
Ganghwa-gun gets around 214 mm of rain and snow over 19 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 10 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 54 min in early September to 9 h 36 min 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 Ganghwa-gun
In fall, Ganghwa-gun overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Ganghwa-gun sits in the Pacific typhoon belt; the season peaks July–October.
Ganghwa-gun's rainy season runs July–August, when most of the year's rain falls.
Is fall a good time to visit Ganghwa-gun?
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 Ganghwa-gun for sightseeing.
What to pack for Ganghwa-gun in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Ganghwa-gun sees daytime highs around 19°C and nights near 11°C. Pack a warm layer. Worth having: light clothes. About 19 days see rain.
Sea temperature near Ganghwa-gun in Fall
The nearest coast averages about 19°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 24°C and coldest in February near 4°C.
It's comfortable for a long swim from Jul 7 to Oct 10 — about 3.2 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 5 | 4 | 5 | 8 | 13 | 17 | 21 | 24 | 23 | 19 | 14 | 9 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 5 | Bracing |
| Feb | 4 | Bracing |
| Mar | 5 | Bracing |
| Apr | 8 | Bracing |
| May | 13 | Bracing |
| Jun | 17 | Cool |
| Jul | 21 | Refreshing |
| Aug | 24 | Warm |
| Sep | 23 | Refreshing |
| Oct | 19 | Cool |
| Nov | 14 | Bracing |
| Dec | 9 | Bracing |
UV index in Ganghwa-gun in Fall
Clear-sky midday UV across fall averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Ganghwa-gun peaks around July 22 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 4 | 6 | 6 | 7 | 8 | 7 | 7 | 5 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | High | High | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 6 | High |
| Jun | 7 | High |
| Jul | 8 | Very high |
| Aug | 7 | Very high |
| Sep | 7 | High |
| Oct | 5 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Air quality in Ganghwa-gun 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 Ganghwa-gun is worst in March — around 160 µg/m³ PM2.5 (very unhealthy), about 2.0× the cleanest month (August, 81 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) | 145 | 149 | 160 | 127 | 111 | 98 | 88 | 81 | 110 | 132 | 142 | 133 |
| Level | Unhealthy | Unhealthy | Very unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 145 | Unhealthy |
| Feb | 149 | Unhealthy |
| Mar | 160 | Very unhealthy |
| Apr | 127 | Unhealthy |
| May | 111 | Unhealthy |
| Jun | 98 | Unhealthy |
| Jul | 88 | Unhealthy |
| Aug | 81 | Unhealthy |
| Sep | 110 | Unhealthy |
| Oct | 132 | Unhealthy |
| Nov | 142 | Unhealthy |
| Dec | 133 | Unhealthy |
Where is Ganghwa-gun?
Ganghwa-gun sits at 37.7°N, 126.5°E, 15 m above sea level, in South Korea. The nearest listed city is Gimpo-si, 24 km away.
Topography around Ganghwa-gun
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ganghwa-gun.
Within 3 km, the terrain around Ganghwa-gun has only modest variations in elevation — a maximum elevation change of 227 m around an average of 38 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 449 m; within 80 km, large variations in elevation — a maximum elevation change of 924 m.
The land around Ganghwa-gun is covered by trees (39%) and cropland (30%) within 3 km, cropland (31%), trees (30%) and water (23%) within 16 km, and water (33%) and trees (31%) 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 Ganghwa-gun (37.7472°, 126.4856°, elevation 15 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.