Where to Go for Great Weather
South Korea · Month guide

South Korea in May

Around 22 °C with 98 mm of rain and 7.1 hours of sun a day.

May is one of the strongest months to visit South Korea. Around 22 °C with 98 mm of rain and 7.1 hours of sun a day. Use the regional grid below to find where this month works best — national averages hide the swings between coast, highlands, and inland.

Plan a trip in May← South Korea year-round
Match verdictMatch: Good option. South Korea · May.
Good option
South Korea · May
What the weather usually does

South Korea · typical month

  • Day / night
    13 – 22 °C
    Year range -5 – 30 °C
  • Rainfall
    98 mm
    Year range 31 – 251 mm
  • Sunshine
    7.1 hr / day
    Year range 4.5 – 7.2 hr / day
Compare with another destination
What’s open · May

Things to do in South Korea in May

Nothing in South Korea shuts for the season, and 1 thing below is at its best in May.

Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.

17 regions · current month

South Korea, taken apart

Safety · 6 governments

What the governments say about South Korea

Combined advisory · most-cautious-wins
Exercise normal precautions
Highest level across 6 governments · Advisory last changed
See breakdown by country
AU

Exercise normal precautions

Changed Checked www.smartraveller.gov.au
CA

Exercise normal precautions

Changed Checked travel.gc.ca
DE

Exercise normal precautions

Changed Checked www.auswaertiges-amt.de
UK

Exercise normal precautions

Changed Checked www.gov.uk
US

Exercise normal precautions

Changed Checked travel.state.gov

Parts of South Korea carry a higher advisory — up to level 4, "Do not travel". The governments concerned name a region rather than a boundary, so the carve-out is not drawn on the map and is not reflected in the combined level above. Follow the source links for where it applies.

Climate at a glance · 10-year ERA5

A decade of weather, in one page

Temperature°C
Temperature · 12-month climatologySouth Korea. Average daytime high by month in °C. Lowest in January (3.9), highest in August (29.6). Monthly means: 3.9, 6.1, 12.5, 18.0, 22.5, 26.2, 28.7, 29.6, 25.4, 19.5, 13.1, 5.3.
— daytime high— overnight low▬ typical range
View data table
MonthAverage daytime high (°C)Average overnight low (°C)Typical lowTypical high
January3.9-4.6-11.69.5
February6.1-2.7-8.713.1
March12.52.7-2.519.9
April18.08.02.424.0
May22.512.97.727.2
June26.218.214.130.1
July28.722.618.932.8
August29.623.018.633.1
September25.418.112.930.0
October19.510.84.424.9
November13.13.7-2.219.5
December5.3-3.0-9.711.7
Rainfallmm
Rainfall · 12-month climatologySouth Korea. Rainfall by month in mm. Lowest in January (31), highest in July (251). Monthly means: 31, 37, 62, 81, 98, 141, 251, 203, 184, 96, 46, 33.
View data table
MonthRainfall (mm)
January31
February37
March62
April81
May98
June141
July251
August203
September184
October96
November46
December33
Sunshinehr / day
Sunshine · 12-month climatologySouth Korea. Sunshine hours by month in hr / day. Lowest in July (4.5), highest in March (7.2). Monthly means: 6.1, 6.9, 7.2, 7.2, 7.1, 6.2, 4.5, 4.9, 4.8, 5.5, 5.7, 5.6.
View data table
MonthSunshine hours (hr / day)
January6.1
February6.9
March7.2
April7.2
May7.1
June6.2
July4.5
August4.9
September4.8
October5.5
November5.7
December5.6
Windkm/h
Wind · 12-month climatologySouth Korea. Average wind speed by month in km/h. Lowest in August (8.4), highest in February (11.3). Monthly means: 11.0, 11.3, 10.3, 10.4, 9.8, 8.4, 8.8, 8.4, 8.7, 9.0, 9.8, 10.9.
— average▬ typical range
View data table
MonthAverage wind speed (km/h)Typical lowTypical high
January11.05.818.6
February11.35.819.5
March10.36.017.8
April10.46.317.5
May9.85.716.1
June8.45.214.4
July8.84.915.1
August8.44.615.0
September8.74.615.6
October9.05.115.6
November9.85.317.3
December10.95.718.0
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Snow depth

Snow depth for South Korea is part of the Premium map and its district-level detail. See what Premium includes.

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Sea surface temperature

Sea surface temperature for South Korea is part of the Premium map and its district-level detail. See what Premium includes.

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Heat index

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Humidity

Humidity for South Korea is part of the Premium map and its district-level detail. See what Premium includes.

← Earlier
April

Around 18 °C with 80 mm of rain and 7.2 hours of sun a day.

Later →
June

Around 26 °C with 141 mm of rain and 6.2 hours of sun a day.

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