Busan in Spring
In spring (March, April and May), Busan sees average daytime highs around 15°C and overnight lows near 12°C, with 339 mm of rain over about 24 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 10°C in early March to 19°C by late May. The sky is clear or mostly clear about 40% of the time across spring, and the air most often feels dry.
Spring is Busan's 3rd-best season to visit on our travel score. For the whole year in context, see Busan's year-round climate.
- Avg daytime high
- 15°C
- 3rd-warmest season
- Avg overnight low
- 12°C
- Rainfall
- 339 mm
- 24 wet days
- Avg wind
- 21 km/h
- Travel score
- 4.7
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Busan in Spring
Over the season highs climb from about 10°C in early March to 19°C by late May.
A typical spring day in Busan reaches about 15°C and drops to 12°C overnight. The warmest of the three months is May, the coolest March.
How spring really feels in Busan
Once humidity and wind are folded in, spring brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
spring sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Busan 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 | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 8° / 3° | 37 | 4.7 | 9.9 | 1.4 |
| Feb | 9° / 5° | 47 | 5.1 | 10.7 | 2.0 |
| Mar | 12° / 8° | 89 | 7.9 | 11.7 | 3.2 |
| Apr | 15° / 12° | 121 | 8.1 | 12.9 | 4.7 |
| May | 18° / 16° | 130 | 7.6 | 13.8 | 6.1 |
| Jun | 21° / 19° | 167 | 9.3 | 14.3 | 6.4 |
| Jul | 25° / 23° | 228 | 11.8 | 14.1 | 6.4 |
| Aug | 27° / 25° | 181 | 11.1 | 13.3 | 6.5 |
| Sep | 24° / 22° | 159 | 8.8 | 12.2 | 7.0 |
| Oct | 20° / 17° | 72 | 4.5 | 11.1 | 7.4 |
| Nov | 15° / 11° | 52 | 5.4 | 10.2 | 5.3 |
| Dec | 10° / 6° | 33 | 4.1 | 9.7 | 2.7 |
Cloud cover in Spring
The sky is clear or mostly clear about 40% of the time across spring.
Chance of precipitation in Spring
Busan gets around 339 mm of rain over 24 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 21 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 12 min in early March to 14 h 12 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 Busan
In spring, Busan overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Busan sits in the Pacific typhoon belt; the season peaks July–October.
Busan's rainy season runs April–September, when most of the year's rain falls.
Is spring a good time to visit Busan?
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 Busan for sightseeing.
What to pack for Busan in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Busan sees daytime highs around 15°C and nights near 12°C. Pack a warm layer. Worth having: rain gear, sun protection and a windbreaker. About 24 days see rain.
Sea temperature near Busan in Spring
The nearest coast averages about 15°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 26°C and coldest in February near 14°C.
It's comfortable for a long swim from Jun 17 to Nov 7 — about 4.7 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 | 15 | 17 | 20 | 23 | 26 | 25 | 22 | 19 | 17 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Bracing |
| May | 17 | Cool |
| Jun | 20 | Refreshing |
| Jul | 23 | Refreshing |
| Aug | 26 | Warm |
| Sep | 25 | Warm |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Busan in Spring
Clear-sky midday UV across spring averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Busan peaks around August 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 | 5 | 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 | 5 | 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 Busan 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 Busan is worst in March — around 21 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (August, 13 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Busan's WHO annual average of 17 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 16 | 18 | 21 | 21 | 20 | 17 | 14 | 13 | 14 | 16 | 18 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 16 | Moderate |
| Feb | 18 | Moderate |
| Mar | 21 | Moderate |
| Apr | 21 | Moderate |
| May | 20 | Moderate |
| Jun | 17 | Moderate |
| Jul | 14 | Moderate |
| Aug | 13 | Moderate |
| Sep | 14 | Moderate |
| Oct | 16 | Moderate |
| Nov | 18 | Moderate |
| Dec | 15 | Moderate |
Where is Busan?
Busan sits at 35.1°N, 129.0°E, 15 m above sea level, in South Korea. The nearest listed city is Kimhae, 20 km away.
Topography around Busan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Busan.
Within 3 km, the terrain around Busan has significant variations in elevation — a maximum elevation change of 485 m around an average of 75 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 636 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,204 m.
The land around Busan is covered by artificial surfaces (50%), trees (26%) and water (21%) within 3 km, water (51%) and artificial surfaces (24%) within 16 km, and water (53%) and trees (36%) 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 Busan (35.1017°, 129.03°, 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.