Climate averages 1991–2020
Nagano weather
in October.
A mild, wet month: the 6th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Nagano: daytime highs average 18.0°C and nights cool to about 9.5°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 161 mm of rain on roughly 16 days, which makes October a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 17 min on an average October day.
The nearest other city in this atlas is Ueda (29 km away). In October its highs average 18.4°C, about as warm as Nagano, with 150 mm of rain.
Among the 303 cities listed in Japan, Nagano ranks 270th of 303 for the warmest October highs and joint 130th of 303 for the driest October (rainfall, lowest first). The mean October high of those 303 cities is 20.4°C; Nagano is 2.3°C cooler than that mean.
From October to November, average highs fall by 6.0°C to 12.0°C, and monthly rainfall falls from 161 mm to 116 mm.
The annual picture
October 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
Nagano climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.1°C-4.7°C | -4.7°C | 148 | 22.8 | 10.010 h |
| February | 3.2°C-4.4°C | -4.4°C | 121 | 19.1 | 10.811 h |
| March | 7.1°C-1.5°C | -1.5°C | 138 | 18.6 | 11.912 h |
| April | 13.9°C3.2°C | 3.2°C | 115 | 14.6 | 13.113 h |
| May | 20.6°C9.7°C | 9.7°C | 133 | 14.7 | 14.114 h |
| June | 23.7°C14.7°C | 14.7°C | 178 | 18.1 | 14.615 h |
| July | 26.9°C19.0°C | 19.0°C | 243 | 21.7 | 14.414 h |
| August | 28.1°C19.9°C | 19.9°C | 169 | 19.5 | 13.614 h |
| September | 23.9°C15.9°C | 15.9°C | 182 | 17.0 | 12.412 h |
| October, selected | 18.0°C9.5°C | 9.5°C | 161 | 15.6 | 11.311 h |
| November | 12.0°C3.2°C | 3.2°C | 116 | 16.4 | 10.310 h |
| December | 5.3°C-2.3°C | -2.3°C | 138 | 20.4 | 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
October in nearby cities
- Ueda in OctoberJapan · 29 kmHigh 18.4°C · Low 9.8°C · 150 mm rain
- Azumino in OctoberJapan · 48 kmHigh 18.4°C · Low 9.5°C · 193 mm rain
- Matsumoto in OctoberJapan · 50 kmHigh 18.5°C · Low 9.6°C · 193 mm rain
- Saku in OctoberJapan · 55 kmHigh 18.1°C · Low 10.1°C · 161 mm rain
- Jōetsu in OctoberJapan · 56 kmHigh 19.6°C · Low 12.4°C · 164 mm rain
- Shibukawa in OctoberJapan · 75 kmHigh 19.0°C · Low 11.9°C · 180 mm rain
- Takasaki in OctoberJapan · 82 kmHigh 18.9°C · Low 11.3°C · 225 mm rain
- Maebashi in OctoberJapan · 85 kmHigh 19.2°C · Low 11.8°C · 180 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 Nagano) is explained once on the Nagano year overview and on the Sources, method and limits page.