Climate averages 1991–2020
Iruma weather
in November.
A cool, wet month: the 8th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
November is a cool month in Iruma: daytime highs average 14.6°C and nights cool to about 6.3°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 101 mm of rain on roughly 11 days, which makes November a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 19 min on an average November day.
The nearest other city in this atlas is Sayama (6 km away). In November its highs average 14.8°C, about as warm as Iruma, with 92 mm of rain.
Among the 303 cities listed in Japan, Iruma ranks joint 226th of 303 for the warmest November highs and joint 199th of 303 for the driest November (rainfall, lowest first). The mean November high of those 303 cities is 14.9°C; Iruma is 0.3°C cooler than that mean.
From November to December, average highs fall by 4.9°C to 9.7°C, and monthly rainfall falls from 101 mm to 68 mm.
The annual picture
November 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
Iruma climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.2°C-2.7°C | -2.7°C | 77 | 8.5 | 10.010 h |
| February | 8.1°C-2.0°C | -2.0°C | 76 | 9.7 | 10.911 h |
| March | 11.7°C1.5°C | 1.5°C | 139 | 15.2 | 11.912 h |
| April | 16.8°C6.8°C | 6.8°C | 146 | 14.6 | 13.113 h |
| May | 21.2°C12.3°C | 12.3°C | 166 | 15.6 | 14.014 h |
| June | 23.8°C16.7°C | 16.7°C | 222 | 19.5 | 14.515 h |
| July | 27.5°C20.9°C | 20.9°C | 243 | 21.8 | 14.314 h |
| August | 28.7°C22.2°C | 22.2°C | 205 | 21.0 | 13.514 h |
| September | 25.0°C18.6°C | 18.6°C | 249 | 18.2 | 12.412 h |
| October | 19.6°C12.6°C | 12.6°C | 242 | 16.2 | 11.311 h |
| November, selected | 14.6°C6.3°C | 6.3°C | 101 | 11.3 | 10.310 h |
| December | 9.7°C0.4°C | 0.4°C | 68 | 8.3 | 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
November in nearby cities
- Sayama in NovemberJapan · 6 kmHigh 14.8°C · Low 6.2°C · 92 mm rain
- Hannō in NovemberJapan · 6 kmHigh 15.1°C · Low 6.9°C · 101 mm rain
- Tokorozawa in NovemberJapan · 9 kmHigh 14.7°C · Low 6.4°C · 92 mm rain
- Ōme in NovemberJapan · 12 kmHigh 15.1°C · Low 6.9°C · 101 mm rain
- Kawagoe in NovemberJapan · 15 kmHigh 15.0°C · Low 6.4°C · 76 mm rain
- Sakado in NovemberJapan · 16 kmHigh 15.1°C · Low 6.7°C · 76 mm rain
- Akiruno in NovemberJapan · 16 kmHigh 15.2°C · Low 7.1°C · 101 mm rain
- Hino in NovemberJapan · 16 kmHigh 15.0°C · Low 6.8°C · 92 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 Iruma) is explained once on the Iruma year overview and on the Sources, method and limits page.
Hachiōji, Ōme and Akiruno lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.