Nikkō weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Fair
Best time to visit: April – May
What is the weather like in Nikkō in September?
In September, Nikkō is warm: daytime highs average 24 °C, and nights cool down to about 16 °C. The sun is scarce, with only about 3.8 hours a day. It rains often – on about 21 days, adding up to 280 mm. All in all, September is a so-so month for a holiday in Nikkō.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 35 | 53 | 56 |
| Day | 28° | 24° | 18° |
| Night | 19° | 16° | 9° |
| Sun | 4.8 h | 3.8 h | 4.2 h |
| Rain days | 24 | 21 | 17 |
More details for September
- Daylight
- 12 h 28 min05:23 – 17:51
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 11 daysdew point 18 °C or moreAll months
- Wind
- 9 km/haverage daily peakAll months
- Cloud cover
- 74 %on averageAll months
- Hot days
- 1 day30 °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 %13 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in September
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Nikkō in September: quick answers
Is Nikkō hot in September?
Warm rather than hot: in September, daytime highs in Nikkō average 24 °C and nights cool to about 16 °C.
Does it rain much in Nikkō in September?
It rains often – on about 21 days, adding up to 280 mm.
Nikkō month by month
The whole year in NikkōAll destinations: JapanWhere to go in September
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