Mountain air

Nikkō weather in May

Temperature, rain and sunshine in May: long-term averages from 30 years of weather data, not a forecast.

61

Holiday weather in May

Good

Best time to visit: April – May

What is the weather like in Nikkō in May?

In May, Nikkō is warm: daytime highs average 21 °C, and nights cool down to about 10 °C. Expect around 6.0 hours of sunshine a day. It rains often – on about 17 days, adding up to 202 mm. All in all, May is a good month for a holiday in Nikkō.

May compared

How the weather changes from April to June. Tap a month to open it.

AprilAprMayMayJuneJun
Score666155
Day16°21°24°
Night4°10°15°
Sun6.1 h6.0 h4.5 h
Rain days151722

More details for May

Daylight
14 h 6 min04:35 – 18:41
UV index
10 · very highclear sky, noon (estimate)All months
Muggy days
0 daysdew point 18 °C or moreAll months
Wind
11 km/haverage daily peakAll months
Cloud cover
70 %on averageAll months
Hot days
0 days30 °C or moreAll months
Snow days
0 days1 cm or more of fresh snowAll months
Time zone
UTC+9offset from UTC

How the score comes together

  • Temperatureweight 50 %100 %
  • Sunshineweight 20 %50 %
  • Few rainy daysweight 30 %4 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.

What to pack in May

  • Sunscreen
  • Sunglasses & sun hat
  • A jumper for the evenings
  • Rain jacket or umbrella

Nikkō in May: quick answers

Is Nikkō hot in May?

Warm rather than hot: in May, daytime highs in Nikkō average 21 °C and nights cool to about 10 °C.

Does it rain much in Nikkō in May?

It rains often – on about 17 days, adding up to 202 mm.

Nikkō month by month

Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences