Climate averages 1991–2020
Kai weather
in October.
A mild, very wet month: the 6th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Kai: daytime highs average 19.8°C and nights cool to about 11.9°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 186 mm of rain on roughly 13 days, which makes October a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 19 min on an average October day.
The nearest other city in this atlas is Kofu (6 km away). In October its highs average 20.3°C, 0.5°C warmer than Kai, with 186 mm of rain.
Among the 303 cities listed in Japan, Kai ranks joint 221st of 303 for the warmest October highs and joint 180th of 303 for the driest October (rainfall, lowest first). The mean October high of those 303 cities is 20.4°C; Kai is 0.6°C cooler than that mean.
From October to November, average highs fall by 5.2°C to 14.6°C, and monthly rainfall falls from 186 mm to 85 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
Kai climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.8°C-2.4°C | -2.4°C | 65 | 6.8 | 10.010 h |
| February | 6.9°C-2.2°C | -2.2°C | 73 | 8.1 | 10.911 h |
| March | 11.0°C1.4°C | 1.4°C | 125 | 12.8 | 11.912 h |
| April | 17.4°C7.0°C | 7.0°C | 120 | 12.6 | 13.113 h |
| May | 22.2°C12.3°C | 12.3°C | 129 | 12.8 | 14.014 h |
| June | 24.9°C16.7°C | 16.7°C | 177 | 16.3 | 14.515 h |
| July | 28.3°C20.6°C | 20.6°C | 199 | 17.4 | 14.314 h |
| August | 29.1°C21.5°C | 21.5°C | 139 | 16.8 | 13.514 h |
| September | 25.3°C17.8°C | 17.8°C | 185 | 14.6 | 12.412 h |
| October, selected | 19.8°C11.9°C | 11.9°C | 186 | 13.0 | 11.311 h |
| November | 14.6°C6.3°C | 6.3°C | 85 | 9.2 | 10.310 h |
| December | 8.9°C1.2°C | 1.2°C | 60 | 7.4 | 9.810 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
- Kofu in OctoberJapan · 6 kmHigh 20.3°C · Low 12.2°C · 186 mm rain
- Minami-Alps in OctoberJapan · 9 kmHigh 20.0°C · Low 12.1°C · 246 mm rain
- Fujinomiya in OctoberJapan · 53 kmHigh 20.9°C · Low 14.3°C · 296 mm rain
- Gotemba in OctoberJapan · 57 kmHigh 19.5°C · Low 12.9°C · 261 mm rain
- Saku in OctoberJapan · 59 kmHigh 18.1°C · Low 10.1°C · 161 mm rain
- Fuji, Japan in OctoberJapan · 60 kmHigh 21.7°C · Low 15.4°C · 265 mm rain
- Iida in OctoberJapan · 65 kmHigh 19.8°C · Low 11.3°C · 210 mm rain
- Akiruno in OctoberJapan · 65 kmHigh 20.0°C · Low 13.2°C · 242 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 Kai) is explained once on the Kai year overview and on the Sources, method and limits page.
Kofu lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.