Yeosu in Winter
In winter (December, January and February), Yeosu sees average daytime highs around 7°C and overnight lows near 3°C, with 113 mm of precipitation over about 13 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 7°C. The sky is clear or mostly clear about 49% of the time across winter, and the air most often feels dry.
Winter is Yeosu's weakest season of the year to visit on our travel score. For the whole year in context, see Yeosu's year-round climate.
- Avg daytime high
- 7°C
- coldest season of the year
- Avg overnight low
- 3°C
- Precipitation
- 113 mm
- 13 wet days
- Avg wind
- 18 km/h
- Travel score
- 1.3
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Yeosu in Winter
Across winter, daytime highs hold fairly steady around 7°C.
A typical winter day in Yeosu reaches about 7°C and drops to 3°C overnight. The warmest of the three months is December, the coolest January.
How winter really feels in Yeosu
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 72 that feel at or below 0°C.
The story in winter is cold — wind chill drags the overnight "feels like" below the raw low.
Yeosu weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 6° / 2° | 34 | 4.3 | 9.9 | 0.6 |
| Feb | 8° / 3° | 48 | 4.8 | 10.7 | 1.3 |
| Mar | 11° / 6° | 92 | 7.4 | 11.7 | 2.8 |
| Apr | 15° / 11° | 134 | 8.5 | 12.8 | 4.5 |
| May | 18° / 16° | 147 | 8.4 | 13.8 | 6.2 |
| Jun | 22° / 20° | 194 | 9.4 | 14.3 | 6.4 |
| Jul | 25° / 23° | 268 | 13.6 | 14.1 | 6.1 |
| Aug | 27° / 25° | 224 | 12.6 | 13.3 | 6.2 |
| Sep | 24° / 21° | 160 | 8.9 | 12.2 | 7.0 |
| Oct | 20° / 16° | 71 | 4.7 | 11.1 | 7.3 |
| Nov | 14° / 10° | 50 | 5.4 | 10.2 | 4.7 |
| Dec | 9° / 4° | 31 | 3.9 | 9.7 | 1.9 |
Cloud cover in Winter
The sky is clear or mostly clear about 49% of the time across winter.
Chance of precipitation in Winter
Yeosu gets around 113 mm of rain and snow over 13 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 18 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 48 min in early December to 11 h 06 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 3.1 kWh/m².
Hazard calendar for Yeosu
In winter, Yeosu overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Yeosu sits in the Pacific typhoon belt; the season peaks July–October.
Yeosu's rainy season runs April–September, when most of the year's rain falls.
Is winter a good time to visit Yeosu?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Yeosu.
What to pack for Yeosu in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Yeosu sees daytime highs around 7°C and nights near 3°C. Pack a warm layer. Worth having: a heavy coat. About 13 days see rain.
Sea temperature near Yeosu in Winter
The nearest coast averages about 13°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 15 km away) is warmest in August at about 26°C and coldest in February near 12°C.
It's comfortable for a long swim from Jun 20 to Oct 22 — about 4.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 13 | 12 | 12 | 13 | 16 | 20 | 23 | 26 | 24 | 21 | 17 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Warm | Refreshing | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 13 | Bracing |
| Feb | 12 | Bracing |
| Mar | 12 | Bracing |
| Apr | 13 | Bracing |
| May | 16 | Cool |
| Jun | 20 | Cool |
| Jul | 23 | Refreshing |
| Aug | 26 | Warm |
| Sep | 24 | Warm |
| Oct | 21 | Refreshing |
| Nov | 17 | Cool |
| Dec | 14 | Bracing |
UV index in Yeosu in Winter
Clear-sky midday UV across winter averages around 3. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Yeosu peaks around August 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (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) | 2 | 4 | 6 | 7 | 8 | 8 | 8 | 9 | 9 | 5 | 4 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 6 | High |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 9 | Very high |
| Sep | 9 | Very high |
| Oct | 5 | High |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Yeosu in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Yeosu is worst in March — around 42 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (July, 18 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) | 30 | 35 | 42 | 37 | 31 | 25 | 18 | 18 | 22 | 24 | 27 | 26 |
| Level | Moderate | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 30 | Moderate |
| Feb | 35 | Poor |
| Mar | 42 | Poor |
| Apr | 37 | Poor |
| May | 31 | Moderate |
| Jun | 25 | Moderate |
| Jul | 18 | Moderate |
| Aug | 18 | Moderate |
| Sep | 22 | Moderate |
| Oct | 24 | Moderate |
| Nov | 27 | Moderate |
| Dec | 26 | Moderate |
Where is Yeosu?
Yeosu sits at 34.8°N, 127.7°E, 10 m above sea level, in South Korea. The nearest listed city is Gwangyang, 20 km away.
Topography around Yeosu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Yeosu.
Within 3 km, the terrain around Yeosu has significant variations in elevation — a maximum elevation change of 327 m around an average of 63 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 502 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,875 m.
The land around Yeosu is covered by trees (40%) and artificial surfaces (30%) within 3 km, water (52%) and trees (30%) within 16 km, and water (46%) and trees (44%) 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 Yeosu (34.7606°, 127.6621°, elevation 10 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.