Best time to visit Muan
The best time to visit Muan is April–May and October, judged on twenty years of weather records and the events worth going for.
Muan, Jeollanam-do, South Korea
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 6.1 °C / 43 °F | -1.1 °C / 30 °F | 23 mm / 0.9 in | neither best nor good |
| February | 8 °C / 46 °F | 0.1 °C / 32 °F | 36 mm / 1.4 in | neither best nor good |
| March | 13.1 °C / 56 °F | 3.6 °C / 38 °F | 57 mm / 2.2 in | good month |
| April | 18.4 °C / 65 °F | 8.4 °C / 47 °F | 80 mm / 3.1 in | best month |
| May | 23.4 °C / 74 °F | 13.6 °C / 56 °F | 97 mm / 3.8 in | best month |
| June | 26.9 °C / 80 °F | 19 °C / 66 °F | 142 mm / 5.6 in | good month |
| July | 29.3 °C / 85 °F | 23.4 °C / 74 °F | 228 mm / 9 in | neither best nor good |
| August | 30.9 °C / 88 °F | 24.3 °C / 76 °F | 168 mm / 6.6 in | neither best nor good |
| September | 27 °C / 81 °F | 19.5 °C / 67 °F | 164 mm / 6.4 in | good month |
| October | 21.9 °C / 71 °F | 12.8 °C / 55 °F | 62 mm / 2.4 in | best month |
| November | 15.3 °C / 60 °F | 6.9 °C / 44 °F | 49 mm / 1.9 in | good month |
| December | 8.1 °C / 47 °F | 0.9 °C / 34 °F | 27 mm / 1.1 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: good
- AApril: best
- MMay: best
- JJune: good
- JJuly: neither
- AAugust: neither
- SSeptember: good
- OOctober: best
- NNovember: good
- DDecember: neither
- Best
- April–May, October
- Good
- March, June, September, November
Why these months
March · good
In its favour: precipitation 57 mm / 2.2 in, share of daylight that is sunny 76%, wet days 6.7 days, days with heavy rain 2.2 days, average daily high 13.1 °C / 56 °F, relative humidity 65%.
Against: feels like (high) 9.9 °C / 50 °F, average daily low 3.6 °C / 38 °F.
April · best
In its favour: feels like (high) 16.3 °C / 61 °F, average daily high 18.4 °C / 65 °F, share of daylight that is sunny 75%, precipitation 80 mm / 3.1 in, wet days 7.5 days, days with heavy rain 3 days, relative humidity 65%, average daily low 8.4 °C / 47 °F.
May · best
In its favour: feels like (high) 23.2 °C / 74 °F, average daily high 23.4 °C / 74 °F, share of daylight that is sunny 72%, precipitation 97 mm / 3.8 in, wet days 7.1 days, days with heavy rain 3 days, average daily low 13.6 °C / 56 °F, relative humidity 69%.
June · good
In its favour: feels like (high) 28.9 °C / 84 °F, share of daylight that is sunny 65%, average daily high 26.9 °C / 80 °F, wet days 8.9 days, average daily low 19 °C / 66 °F, days with heavy rain 3.9 days, relative humidity 75%.
Against: precipitation 142 mm / 5.6 in.
September · good
In its favour: share of daylight that is sunny 69%, feels like (high) 29.4 °C / 85 °F, average daily high 27 °C / 81 °F, wet days 10.3 days, average daily low 19.5 °C / 67 °F, days with heavy rain 3.8 days.
Against: precipitation 164 mm / 6.4 in, relative humidity 77%.
October · best
In its favour: feels like (high) 20.9 °C / 70 °F, average daily high 21.9 °C / 71 °F, share of daylight that is sunny 79%, precipitation 62 mm / 2.4 in, wet days 4.9 days, days with heavy rain 1.8 days, average daily low 12.8 °C / 55 °F, relative humidity 71%.
November · good
In its favour: precipitation 49 mm / 1.9 in, share of daylight that is sunny 74%, wet days 5.8 days, average daily high 15.3 °C / 60 °F, days with heavy rain 1.3 days, relative humidity 68%, average daily low 6.9 °C / 44 °F.
Against: feels like (high) 12.3 °C / 54 °F.
Beach and swimming
Hot, dry and sunny. Penalises the monsoon hard.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: neither
- JJune: good
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: neither
- NNovember: neither
- DDecember: neither
- Good
- June
Why these months
June · good
In its favour: average daily high 26.9 °C / 80 °F, share of daylight that is sunny 65%, feels like (high) 28.9 °C / 84 °F, wet days 8.9 days, average daily low 19 °C / 66 °F, wind (daily max) 17 km/h / 11 mph.
Against: precipitation 142 mm / 5.6 in, days with heavy rain 3.9 days.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: good
- MMarch: best
- AApril: best
- MMay: best
- JJune: neither
- JJuly: neither
- AAugust: neither
- SSeptember: neither
- OOctober: best
- NNovember: best
- DDecember: good
- Best
- March–May, October–November
- Good
- February, December
Why these months
February · good
In its favour: precipitation 36 mm / 1.4 in, wet days 5.2 days, days with heavy rain 1 days, average daily high 8 °C / 46 °F, share of daylight that is sunny 72%, daylight per day 10.9 h, wind (daily max) 22 km/h / 13 mph, average daily low 0.1 °C / 32 °F.
Against: feels like (high) 3.6 °C / 38 °F.
March · best
In its favour: average daily high 13.1 °C / 56 °F, precipitation 57 mm / 2.2 in, wet days 6.7 days, days with heavy rain 2.2 days, share of daylight that is sunny 76%, daylight per day 12 h, average daily low 3.6 °C / 38 °F, feels like (high) 9.9 °C / 50 °F, wind (daily max) 22 km/h / 13 mph.
April · best
In its favour: average daily high 18.4 °C / 65 °F, precipitation 80 mm / 3.1 in, wet days 7.5 days, feels like (high) 16.3 °C / 61 °F, average daily low 8.4 °C / 47 °F, share of daylight that is sunny 75%, daylight per day 13.1 h, days with heavy rain 3 days, wind (daily max) 21 km/h / 13 mph.
May · best
In its favour: average daily high 23.4 °C / 74 °F, wet days 7.1 days, precipitation 97 mm / 3.8 in, average daily low 13.6 °C / 56 °F, share of daylight that is sunny 72%, daylight per day 14 h, days with heavy rain 3 days, feels like (high) 23.2 °C / 74 °F, wind (daily max) 19 km/h / 12 mph.
October · best
In its favour: average daily high 21.9 °C / 71 °F, precipitation 62 mm / 2.4 in, wet days 4.9 days, days with heavy rain 1.8 days, feels like (high) 20.9 °C / 70 °F, average daily low 12.8 °C / 55 °F, share of daylight that is sunny 79%, daylight per day 11.3 h, wind (daily max) 17 km/h / 11 mph.
November · best
In its favour: average daily high 15.3 °C / 60 °F, precipitation 49 mm / 1.9 in, wet days 5.8 days, days with heavy rain 1.3 days, feels like (high) 12.3 °C / 54 °F, average daily low 6.9 °C / 44 °F, share of daylight that is sunny 74%, wind (daily max) 19 km/h / 12 mph, daylight per day 10.3 h.
December · good
In its favour: precipitation 27 mm / 1.1 in, wet days 5.1 days, days with heavy rain 0.7 days, average daily high 8.1 °C / 47 °F, share of daylight that is sunny 70%, average daily low 0.9 °C / 34 °F, wind (daily max) 21 km/h / 13 mph.
Against: feels like (high) 3.9 °C / 39 °F, daylight per day 9.9 h.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Muju, 152 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 1.3 °C | 3.6 °C | 9.9 °C | 16.3 °C | 23.2 °C | 28.9 °C | 33.8 °C | 35.6 °C | 29.4 °C | 20.9 °C | 12.3 °C | 3.9 °C |
| Days with heavy rain | 0.4 days | 1 days | 2.2 days | 3 days | 3 days | 3.9 days | 6.7 days | 5.2 days | 3.8 days | 1.8 days | 1.3 days | 0.7 days |
| Time rain usually falls | 10 am | 7 am | 10 pm | 9 am | 6 am | 8 am | 6 am | 3 pm | 1 am | 9 am | 1 pm | 1 pm |
| Sunshine per day | 7.1 h | 7.9 h | 9.1 h | 9.8 h | 10 h | 9.5 h | 8.8 h | 9.7 h | 8.5 h | 8.9 h | 7.6 h | 6.9 h |
| Relative humidity | 67% | 65% | 65% | 65% | 69% | 75% | 83% | 80% | 77% | 71% | 68% | 68% |
Sea temperature
Averaged over a shorter period (2022–2025) than the twenty-year averages above.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature 2022–2025 | 5.8 °C | 5.8 °C | 8.5 °C | 13.7 °C | 18.5 °C | 23.5 °C | 27.4 °C | 30.1 °C | 27.9 °C | 21.4 °C | 14.9 °C | 8.6 °C |
| Sea temperature (daily max) 2022–2025 | 5.9 °C | 6 °C | 8.8 °C | 14 °C | 18.8 °C | 23.8 °C | 27.7 °C | 30.4 °C | 28.1 °C | 21.7 °C | 15.1 °C | 8.8 °C |
- Very cold 10 °C or less
- Cold 10 to 15 °C
- Cool 15 to 20 °C
- Comfortable 20 to 25 °C
- Warm 25 to 28 °C
- Very warm over 28 °C
The words describe how the water feels to swim in. They are ours, not an official standard.
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 18.9 µg/m³ | 18.4 µg/m³ | 25.4 µg/m³ | 25.1 µg/m³ | 22.7 µg/m³ | 19.8 µg/m³ | 13.3 µg/m³ | 17.6 µg/m³ | 15.8 µg/m³ | 15.4 µg/m³ | 15.9 µg/m³ | 13.9 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 30.1 µg/m³ | 27.8 µg/m³ | 36.7 µg/m³ | 36.4 µg/m³ | 33.5 µg/m³ | 30.2 µg/m³ | 21.2 µg/m³ | 27.6 µg/m³ | 23.7 µg/m³ | 24.1 µg/m³ | 26 µg/m³ | 24.4 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.