Changwon, South Korea experiences average highs of 19°C (66°F) and lows of 11°C (52°F) throughout the year. Rainfall is moderate, averaging about 8 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have warmed by 0.9°C (1.6°F) across the available records.
Changwon, South Korea Weather & Climate 2026
Monthly climate averages for Changwon, South Korea. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Jun–Sep At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.8/10
Best: April, May, June, September, October
UV Index
5
Low
Temperature 19°C / 11°C
Feels Like 18°C / 10°C
Rainy Days 8
Rainfall 114 mm
Sunshine 9 h
Humidity 71%
Wind Speed 16 km/h
Dew Point 10°C
Snow Days 1 days
Frost Days 11 days
Hottest Month
30°C
August
Avg Low24°C
Rain15days
Coldest Month
-1°C
January
Avg High7°C
Rain4days
Driest Month
3days
November
Avg High15°C
Avg Low7°C
Windiest Month
17 km/h
February (Gusts 42)
Sea Temperature
8°C – 28°C
Warmest water: August (
28.2°C
)
Worst Time to Visit
Consider avoiding January, February, August, December due to less favorable weather conditions.
Sun Position
Sunrise 05:12
Daylight 14.5h
Sunset 19:42
Live conditions—
Changwon on the map · live conditions
Changwon, South Korea
- Continent
- Asia
- Country
- South Korea
- City
- Changwon
- Population
- 1M
- Coordinates
- 35.23°, 128.68°
Seasonal Breakdown
Spring
Mar–May
Avg High 18°C
Avg Low 9°C
Rain 8 days/mo
2/3 best months
Summer
Jun–Aug
Avg High 28°C
Avg Low 22°C
Rain 13 days/mo
1/3 best months
Autumn
Sep–Nov
Avg High 21°C
Avg Low 14°C
Rain 8 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 8°C
Avg Low 0°C
Rain 4 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 7°C / -1°C . Feb: 9°C / 0°C . Mar: 14°C / 5°C . Apr: 18°C / 9°C . May: 22°C / 14°C . Jun: 26°C / 19°C . Jul: 29°C / 23°C . Aug: 30°C / 24°C . Sep: 26°C / 20°C . Oct: 21°C / 14°C . Nov: 15°C / 7°C . Dec: 8°C / 0°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 34 mm. Feb: 44 mm. Mar: 82 mm. Apr: 107 mm. May: 109 mm. Jun: 170 mm. Jul: 221 mm. Aug: 194 mm. Sep: 227 mm. Oct: 104 mm. Nov: 44 mm. Dec: 26 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 59%. Feb: 59%. Mar: 67%. Apr: 69%. May: 72%. Jun: 79%. Jul: 86%. Aug: 83%. Sep: 81%. Oct: 73%. Nov: 68%. Dec: 61%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 17 km/h . Feb: 17 km/h . Mar: 17 km/h . Apr: 17 km/h . May: 17 km/h . Jun: 15 km/h . Jul: 15 km/h . Aug: 15 km/h . Sep: 15 km/h . Oct: 15 km/h . Nov: 15 km/h . Dec: 16 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 8h. Mar: 9h. Apr: 9h. May: 10h. Jun: 9h. Jul: 9h. Aug: 10h. Sep: 8h. Oct: 8h. Nov: 8h. Dec: 8h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 9°C . Feb: 8°C . Mar: 10°C . Apr: 15°C . May: 18°C . Jun: 22°C . Jul: 24°C . Aug: 28°C . Sep: 28°C . Oct: 23°C . Nov: 18°C . Dec: 13°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 5. Oct: UV 4. Nov: UV 4. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 1 days. Feb: 0 days. Mar: 1 days. Apr: 0 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 0 days. Dec: 0 days.
Climate Trends
Average highs have warmed by 0.9°C (1.6°F) across the available records. Average rainfall is trending drier by about 47 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 31°C | Aug · 30°C |
| Coldest month | Feb 2025 · -2°C | Jan · -1°C |
| Wettest month | Aug 2025 · 224 mm | Sep · 227 mm |
| Windiest month | Apr 2025 · 19 km/h | Feb · 17 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Fair April best
Good May best
Excellent June best
Excellent July
Wet August
Wet September best
Excellent October best
Excellent November
Good December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 7°C / -1°C | 2°C / -6°C | 4days (34 mm) Good | 7.8h Good | 59% Moderate | 3.1 Moderate | Poor | View Details |
| February | 9°C / 0°C | 5°C / -4°C | 5days (44 mm) Good | 8.4h Good | 59% Moderate | 3.7 Moderate | Poor | View Details |
| March | 14°C / 5°C | 11°C / 2°C | 8days (82 mm) Wet | 8.8h Good | 67% Muggy | 4.9 Moderate | Fair | View Details |
| April best | 18°C / 9°C | 17°C / 7°C | 8days (107 mm) Wet | 9.3h Good | 69% Muggy | 5.7 High | Good | View Details |
| May best | 22°C / 14°C | 23°C / 13°C | 8days (109 mm) Wet | 9.9h Good | 72% Muggy | 6.5 High | Excellent | View Details |
| June best | 26°C / 19°C | 28°C / 21°C | 10days (170 mm) Wet | 9.2h Good | 79% Humid | 6.5 High | Excellent | View Details |
| July | 29°C / 23°C | 34°C / 28°C | 14days (221 mm) Wet | 8.7h Good | 86% Very Muggy | 6.6 High | Wet | View Details |
| August | 30°C / 24°C | 35°C / 29°C | 15days (194 mm) Wet | 9.5h Good | 83% Humid | 6.7 High | Wet | View Details |
| September best | 26°C / 20°C | 29°C / 22°C | 13days (227 mm) Wet | 7.5h Good | 81% Humid | 5.4 High | Excellent | View Details |
| October best | 21°C / 14°C | 20°C / 13°C | 7days (104 mm) Good | 7.9h Good | 73% Muggy | 4.2 Moderate | Excellent | View Details |
| November | 15°C / 7°C | 12°C / 4°C | 3days (44 mm) Excellent | 8.1h Good | 68% Muggy | 3.5 Moderate | Good | View Details |
| December | 8°C / 0°C | 4°C / -4°C | 3days (26 mm) Excellent | 7.8h Good | 61% Muggy | 2.8 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Changwon are April, May, June, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Changwon, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Changwon is August, with average daytime highs of 30°C (86°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Changwon is January, with average overnight lows of -1°C (30°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Changwon is September, averaging 227mm of precipitation across 13 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Changwon runs through August, July, September, June, with the heaviest rainfall in August. Based on 10-year averages for Changwon.
Changwon receives approximately 103 sunshine hours per year. The sunniest month is May with around 10 hours. Based on climate data for Changwon.
The least favorable months to visit Changwon are January, February, August, December, primarily due to less favorable weather conditions. For the best conditions, consider April, May, June, September, October instead.
The annual average UV index in Changwon is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Changwon is 71%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in July, August, September, October average 26°C (79°F), which is warm and comfortable for swimming and water activities.
Yes, Changwon receives snow. Months with snowfall average 1 snow days and 1 cm (0 in) of accumulation, with about 11 frost days during winter.
Average wind speeds in Changwon are 16 km/h (10 mph). The windiest month is February with peak winds reaching 17 km/h (11 mph) (gusts up to 42 km/h / 26 mph).
Changwon averages 6 clear-sky days per month with overall cloud cover around 55%. The clearest skies occur in November.
The annual average dew point in Changwon is 10°C (50°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Changwon has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Changwon ranges from 10°C (50°F) to 18°C (64°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Changwon. It earns a climate score of 8.4/10 with Excellent.
For June in Changwon, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 26°C (78°F) and 10 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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