Climate averages 1991–2020
Isehara weather
in October.
A mild, very wet month: the 6th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Isehara: daytime highs average 20.3°C and nights cool to about 15.2°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 231 mm of rain on roughly 15 days, which makes October a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 19 min on an average October day.
The nearest other city in this atlas is Atsugi (7 km away). In October its highs average 20.0°C, about as warm as Isehara, with 231 mm of rain.
Among the 303 cities listed in Japan, Isehara ranks joint 187th of 303 for the warmest October highs and joint 275th of 303 for the driest October (rainfall, lowest first). The mean October high of those 303 cities is 20.4°C; Isehara is 0.1°C cooler than that mean.
From October to November, average highs fall by 4.6°C to 15.7°C, and monthly rainfall falls from 231 mm to 110 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
Isehara climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.7°C1.7°C | 1.7°C | 82 | 8.4 | 10.110 h |
| February | 9.3°C1.8°C | 1.8°C | 85 | 10.2 | 10.911 h |
| March | 12.3°C4.9°C | 4.9°C | 154 | 15.4 | 11.912 h |
| April | 16.6°C9.5°C | 9.5°C | 147 | 14.4 | 13.113 h |
| May | 20.5°C14.3°C | 14.3°C | 158 | 13.6 | 14.014 h |
| June | 23.3°C18.3°C | 18.3°C | 203 | 16.4 | 14.515 h |
| July | 26.9°C22.3°C | 22.3°C | 205 | 17.4 | 14.314 h |
| August | 28.1°C23.5°C | 23.5°C | 160 | 16.3 | 13.513 h |
| September | 25.1°C20.5°C | 20.5°C | 229 | 16.1 | 12.412 h |
| October, selected | 20.3°C15.2°C | 15.2°C | 231 | 14.5 | 11.311 h |
| November | 15.7°C9.8°C | 9.8°C | 110 | 11.7 | 10.310 h |
| December | 11.1°C4.6°C | 4.6°C | 76 | 8.8 | 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
- Atsugi in OctoberJapan · 7 kmHigh 20.0°C · Low 15.2°C · 231 mm rain
- Hiratsuka in OctoberJapan · 8 kmHigh 20.1°C · Low 15.6°C · 267 mm rain
- Hadano in OctoberJapan · 8 kmHigh 20.4°C · Low 15.0°C · 267 mm rain
- Chigasaki in OctoberJapan · 11 kmHigh 20.3°C · Low 16.0°C · 244 mm rain
- Minamirinkan in OctoberJapan · 16 kmHigh 19.7°C · Low 13.9°C · 211 mm rain
- Fujisawa in OctoberJapan · 16 kmHigh 20.3°C · Low 16.1°C · 244 mm rain
- Sagamihara in OctoberJapan · 20 kmHigh 19.7°C · Low 13.1°C · 231 mm rain
- Machida in OctoberJapan · 20 kmHigh 19.5°C · Low 14.0°C · 211 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 Isehara) is explained once on the Isehara year overview and on the Sources, method and limits page.
Aihara, Sagamihara and Atsugi lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.