Muan (Piseo-ri) weather by month & the best time to visit
South Korea · beach resort · humid subtropical climate
The best time to visit Muan (Piseo-ri) is October — its sunniest month (Sunshine Score 72/100), with May and June close behind. Muan (Piseo-ri) averages about 1,890 hours of sunshine a year. Daytime highs around 19°C / 66°F and roughly 63 mm of rain in October.
When is the best time to visit Muan (Piseo-ri)?
For sunshine, the best time to visit Muan (Piseo-ri) is October, then May and June. The dullest month is January (0/100, 32 mm of rain). The full month-by-month picture is in the table below.
How sunny is Muan (Piseo-ri)?
Muan (Piseo-ri) gets a moderate 1,890 hours of sunshine a year. 72 Sunshine Score points separate October (72) from January (0), so the month you pick matters. It ranks #11 of 14 destinations in South Korea for annual sunshine, below the national median of 1,959 hours. Rain has a clear season: the wettest stretch, around July, carries about 51% of the annual 1,291 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 5° / 41°F | 1° / 34°F | 32 mm | 2 | 7° / 45°F |
| February | 0 | 6° / 43°F | 1° / 34°F | 45 mm | 3 | 7° / 45°F |
| March | 7 | 9° / 48°F | 4° / 39°F | 61 mm | 4 | 9° / 48°F |
| April | 36 | 14° / 57°F | 8° / 46°F | 98 mm | 5 | 15° / 59°F |
| May | 65 | 19° / 66°F | 13° / 55°F | 104 mm | 6 | 20° / 68°F |
| June | 63 | 23° / 73°F | 18° / 64°F | 146 mm | 5 | 25° / 77°F |
| July | 62 | 26° / 79°F | 22° / 72°F | 269 mm | 6 | 28° / 82°F |
| August | 62 | 28° / 82°F | 24° / 75°F | 242 mm | 7 | 32° / 90°F |
| September | 63 | 24° / 75°F | 20° / 68°F | 143 mm | 6 | 29° / 84°F |
| October | 72 | 19° / 66°F | 14° / 57°F | 63 mm | 4 | 21° / 70°F |
| November | 34 | 13° / 55°F | 9° / 48°F | 49 mm | 3 | 16° / 61°F |
| December | 0 | 7° / 45°F | 3° / 37°F | 39 mm | 2 | 9° / 48°F |
Sea temperature in Muan (Piseo-ri) by month
The sea off Muan (Piseo-ri) is warmest in August at around 32°C / 90°F, and coolest in January at 7°C / 45°F. The water sits at a comfortable 21°C or warmer roughly 5 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Muan (Piseo-ri): questions and answers
What kind of destination is Muan (Piseo-ri)?
Muan (Piseo-ri) is a beach resort in South Korea with a humid subtropical climate — the sea reaches 32°C at its warmest and is swimmable (21°C+) about 5 months a year.
How many hours of sunshine does Muan (Piseo-ri) get a year?
Muan (Piseo-ri) gets about 1,890 hours of sunshine a year, at its best around October.
When is the best time to visit Muan (Piseo-ri)?
The sunniest time to visit Muan (Piseo-ri) is October, when the Sunshine Score peaks at 72/100 (with May and June close behind). Expect daytime highs around 19°C / 66°F.
What is the least sunny month in Muan (Piseo-ri)?
January is the least sunny month in Muan (Piseo-ri), scoring 0/100 with about 32 mm of rain.
What is the sea temperature in Muan (Piseo-ri)?
The sea in Muan (Piseo-ri) ranges from about 7°C (January) to 32°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Muan (Piseo-ri)?
The typical midday UV index in Muan (Piseo-ri) peaks around 7 (high) in August, easing to about 2 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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