Ganghwa-gun in Spring
In spring (March, April and May), Ganghwa-gun sees average daytime highs around 15°C and overnight lows near 7°C, with 192 mm of precipitation over about 20 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 7°C in early March to 23°C by late May. The sky is clear or mostly clear about 43% of the time across spring, and the air most often feels dry.
Spring is Ganghwa-gun's 3rd-best season to visit on our travel score. For the whole year in context, see Ganghwa-gun's year-round climate.
- Avg daytime high
- 15°C
- 3rd-warmest season
- Avg overnight low
- 7°C
- Precipitation
- 192 mm
- 20 wet days
- Avg wind
- 12 km/h
- Travel score
- 4.8
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Ganghwa-gun in Spring
Over the season highs climb from about 7°C in early March to 23°C by late May.
A typical spring day in Ganghwa-gun reaches about 15°C and drops to 7°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Ganghwa-gun
Once humidity and wind are folded in, spring brings about 0 days that feel above 32°C and 27 that feel at or below 0°C.
The story in spring is cold — wind chill drags the overnight "feels like" below the raw low.
Ganghwa-gun weather by month
How the three spring months (March, April and May) 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 Spring
The sky is clear or mostly clear about 43% of the time across spring.
Chance of precipitation in Spring
Ganghwa-gun gets around 192 mm of rain and snow over 20 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 12 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 06 min in early March to 14 h 24 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.3 kWh/m².
Hazard calendar for Ganghwa-gun
In spring, 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 spring a good time to visit Ganghwa-gun?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Ganghwa-gun for sightseeing.
What to pack for Ganghwa-gun in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Ganghwa-gun sees daytime highs around 15°C and nights near 7°C. Pack a warm layer. Worth having: sun protection. About 20 days see rain.
Sea temperature near Ganghwa-gun in Spring
The nearest coast averages about 9°C across spring — 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 Spring
Clear-sky midday UV across spring 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 Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring 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.