Climate averages 1991–2020
Akiruno weather
in July.
A warm, very wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Akiruno: daytime highs average 27.9°C and nights cool to about 21.3°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 243 mm of rain on roughly 22 days, which makes July a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 19 min on an average July day.
The nearest other city in this atlas is Ōme (6 km away). In July its highs average 28.0°C, about as warm as Akiruno, with 243 mm of rain.
Among the 303 cities listed in Japan, Akiruno ranks joint 186th of 303 for the warmest July highs and joint 219th of 303 for the driest July (rainfall, lowest first). The mean July high of those 303 cities is 27.9°C; Akiruno is level with that mean.
From July to August, average highs rise by 1.0°C to 28.9°C, and monthly rainfall falls from 243 mm to 205 mm.
The annual picture
July 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
Akiruno climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.8°C-1.6°C | -1.6°C | 77 | 8.5 | 10.010 h |
| February | 8.5°C-1.2°C | -1.2°C | 76 | 9.7 | 10.911 h |
| March | 12.1°C2.2°C | 2.2°C | 139 | 15.2 | 11.912 h |
| April | 17.3°C7.5°C | 7.5°C | 146 | 14.6 | 13.113 h |
| May | 21.6°C12.8°C | 12.8°C | 166 | 15.6 | 14.014 h |
| June | 24.1°C17.1°C | 17.1°C | 222 | 19.5 | 14.515 h |
| July, selected | 27.9°C21.3°C | 21.3°C | 243 | 21.8 | 14.314 h |
| August | 28.9°C22.4°C | 22.4°C | 205 | 21.0 | 13.514 h |
| September | 25.3°C19.0°C | 19.0°C | 249 | 18.2 | 12.412 h |
| October | 20.0°C13.2°C | 13.2°C | 242 | 16.2 | 11.311 h |
| November | 15.2°C7.1°C | 7.1°C | 101 | 11.3 | 10.310 h |
| December | 10.4°C1.7°C | 1.7°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
July in nearby cities
- Ōme in JulyJapan · 6 kmHigh 28.0°C · Low 21.4°C · 243 mm rain
- Hachiōji in JulyJapan · 12 kmHigh 27.5°C · Low 21.0°C · 243 mm rain
- Hannō in JulyJapan · 16 kmHigh 28.1°C · Low 21.5°C · 243 mm rain
- Iruma in JulyJapan · 16 kmHigh 27.5°C · Low 20.9°C · 243 mm rain
- Aihara in JulyJapan · 16 kmHigh 27.3°C · Low 21.1°C · 205 mm rain
- Hino in JulyJapan · 16 kmHigh 27.5°C · Low 21.2°C · 182 mm rain
- Sagamihara in JulyJapan · 18 kmHigh 27.6°C · Low 21.2°C · 205 mm rain
- Sayama in JulyJapan · 21 kmHigh 27.9°C · Low 21.1°C · 182 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 Akiruno) is explained once on the Akiruno year overview and on the Sources, method and limits page.
Hachiōji, Iruma and Ōme lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.