Climate averages 1991–2020
Nikkō weather
in August.
A warm, very wet month: the warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Nikkō: daytime highs average 26.4°C and nights cool to about 19.8°C. By daytime temperature it is the warmest month of the year.
Expect about 259 mm of rain on roughly 25 days, which makes August a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 34 min on an average August day.
The nearest other city in this atlas is Kanuma (25 km away). In August its highs average 28.0°C, 1.6°C warmer than Nikkō, with 207 mm of rain.
Among the 303 cities listed in Japan, Nikkō ranks joint 284th of 303 for the warmest August highs and 302nd of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Nikkō is 2.7°C cooler than that mean.
From August to September, average highs fall by 3.6°C to 22.8°C, and monthly rainfall rises from 259 mm to 268 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Nikkō climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.3°C-5.1°C | -5.1°C | 62 | 9.6 | 10.010 h |
| February | 4.0°C-5.0°C | -5.0°C | 59 | 9.7 | 10.811 h |
| March | 8.1°C-1.8°C | -1.8°C | 112 | 14.0 | 11.912 h |
| April | 14.3°C3.7°C | 3.7°C | 137 | 15.1 | 13.113 h |
| May | 19.1°C9.4°C | 9.4°C | 176 | 17.1 | 14.114 h |
| June | 21.9°C14.4°C | 14.4°C | 228 | 22.1 | 14.615 h |
| July | 25.5°C18.7°C | 18.7°C | 305 | 25.4 | 14.414 h |
| August, selected | 26.4°C19.8°C | 19.8°C | 259 | 24.9 | 13.614 h |
| September | 22.8°C16.3°C | 16.3°C | 268 | 20.1 | 12.512 h |
| October | 17.4°C10.0°C | 10.0°C | 198 | 16.6 | 11.311 h |
| November | 12.0°C3.4°C | 3.4°C | 84 | 9.4 | 10.210 h |
| December | 6.4°C-1.8°C | -1.8°C | 59 | 10.1 | 9.710 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Kanuma in AugustJapan · 25 kmHigh 28.0°C · Low 21.2°C · 207 mm rain
- Utsunomiya in AugustJapan · 31 kmHigh 28.2°C · Low 21.0°C · 128 mm rain
- Ōtawara in AugustJapan · 39 kmHigh 27.9°C · Low 20.7°C · 162 mm rain
- Tochigi in AugustJapan · 42 kmHigh 29.3°C · Low 22.2°C · 207 mm rain
- Kiryū in AugustJapan · 46 kmHigh 29.1°C · Low 21.9°C · 174 mm rain
- Nasushiobara in AugustJapan · 47 kmHigh 27.8°C · Low 20.6°C · 190 mm rain
- Sano in AugustJapan · 48 kmHigh 29.5°C · Low 22.4°C · 171 mm rain
- Mooka in AugustJapan · 50 kmHigh 29.6°C · Low 22.1°C · 128 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Nikkō) is explained once on the Nikkō year overview and on the Sources, method and limits page.