Climate averages 1991–2020
Sanjō 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 Sanjō: daytime highs average 19.4°C and nights cool to about 11.5°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 157 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 15 min on an average October day.
The nearest other city in this atlas is Tsubame (6 km away). In October its highs average 19.2°C, about as warm as Sanjō, with 146 mm of rain.
Among the 303 cities listed in Japan, Sanjō ranks joint 242nd of 303 for the warmest October highs and 119th of 303 for the driest October (rainfall, lowest first). The mean October high of those 303 cities is 20.4°C; Sanjō is 0.9°C cooler than that mean.
From October to November, average highs fall by 6.1°C to 13.3°C, and monthly rainfall falls from 157 mm to 153 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
Sanjō climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.9°C-2.0°C | -2.0°C | 206 | 25.7 | 9.910 h |
| February | 4.6°C-2.4°C | -2.4°C | 151 | 21.7 | 10.811 h |
| March | 9.0°C0.0°C | 0.0°C | 150 | 20.8 | 11.912 h |
| April | 15.5°C4.9°C | 4.9°C | 116 | 15.3 | 13.113 h |
| May | 21.1°C10.6°C | 10.6°C | 116 | 13.1 | 14.214 h |
| June | 24.7°C15.8°C | 15.8°C | 143 | 14.1 | 14.715 h |
| July | 27.8°C20.4°C | 20.4°C | 244 | 17.7 | 14.514 h |
| August | 29.4°C21.8°C | 21.8°C | 169 | 15.6 | 13.614 h |
| September | 25.4°C17.9°C | 17.9°C | 156 | 15.1 | 12.512 h |
| October, selected | 19.4°C11.5°C | 11.5°C | 157 | 15.8 | 11.311 h |
| November | 13.3°C5.6°C | 5.6°C | 153 | 18.5 | 10.210 h |
| December | 7.1°C0.6°C | 0.6°C | 202 | 24.0 | 9.610 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
- Tsubame in OctoberJapan · 6 kmHigh 19.2°C · Low 12.4°C · 146 mm rain
- Nagaoka in OctoberJapan · 21 kmHigh 19.5°C · Low 11.3°C · 143 mm rain
- Niigata in OctoberJapan · 35 kmHigh 19.1°C · Low 13.1°C · 155 mm rain
- Kashiwazaki in OctoberJapan · 45 kmHigh 19.5°C · Low 12.0°C · 159 mm rain
- Shibata in OctoberJapan · 50 kmHigh 18.9°C · Low 11.5°C · 170 mm rain
- Jōetsu in OctoberJapan · 82 kmHigh 19.6°C · Low 12.4°C · 164 mm rain
- Aizu-Wakamatsu in OctoberJapan · 89 kmHigh 17.6°C · Low 10.5°C · 125 mm rain
- Yonezawa in OctoberJapan · 108 kmHigh 17.6°C · Low 10.1°C · 139 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 Sanjō) is explained once on the Sanjō year overview and on the Sources, method and limits page.