Climate averages 1991–2020
Yachiyo weather
in July.
A hot, wet month: the 2nd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Yachiyo: daytime highs average 28.2°C and nights cool to about 22.1°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 153 mm of rain on roughly 14 days, which makes July a wet month (the 9th 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 Narashino (10 km away). In July its highs average 28.2°C, about as warm as Yachiyo, with 153 mm of rain.
Among the 303 cities listed in Japan, Yachiyo ranks joint 163rd of 303 for the warmest July highs and joint 31st of 303 for the driest July (rainfall, lowest first). The mean July high of those 303 cities is 27.9°C; Yachiyo is 0.3°C warmer than that mean.
From July to August, average highs rise by 1.4°C to 29.6°C, and monthly rainfall falls from 153 mm to 112 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
Yachiyo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.3°C1.0°C | 1.0°C | 69 | 6.8 | 10.010 h |
| February | 9.1°C1.4°C | 1.4°C | 66 | 8.0 | 10.911 h |
| March | 12.4°C4.5°C | 4.5°C | 120 | 12.2 | 11.912 h |
| April | 17.2°C9.3°C | 9.3°C | 114 | 11.9 | 13.113 h |
| May | 21.6°C14.3°C | 14.3°C | 131 | 11.6 | 14.014 h |
| June | 24.5°C18.1°C | 18.1°C | 161 | 13.7 | 14.515 h |
| July, selected | 28.2°C22.1°C | 22.1°C | 153 | 13.7 | 14.314 h |
| August | 29.6°C23.5°C | 23.5°C | 112 | 11.8 | 13.514 h |
| September | 26.0°C20.5°C | 20.5°C | 175 | 14.2 | 12.412 h |
| October | 20.7°C15.0°C | 15.0°C | 207 | 12.9 | 11.311 h |
| November | 15.7°C9.3°C | 9.3°C | 98 | 10.1 | 10.310 h |
| December | 10.7°C3.8°C | 3.8°C | 63 | 7.7 | 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
- Narashino in JulyJapan · 10 kmHigh 28.2°C · Low 22.2°C · 153 mm rain
- Sakura in JulyJapan · 10 kmHigh 28.4°C · Low 22.2°C · 150 mm rain
- Inzai in JulyJapan · 12 kmHigh 28.6°C · Low 21.9°C · 150 mm rain
- Kamagaya in JulyJapan · 12 kmHigh 28.3°C · Low 21.9°C · 153 mm rain
- Chiba in JulyJapan · 15 kmHigh 28.2°C · Low 22.4°C · 155 mm rain
- Narita in JulyJapan · 18 kmHigh 28.7°C · Low 22.0°C · 150 mm rain
- Toride in JulyJapan · 19 kmHigh 28.6°C · Low 21.9°C · 163 mm rain
- Ryūgasaki in JulyJapan · 19 kmHigh 28.6°C · Low 21.8°C · 158 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 Yachiyo) is explained once on the Yachiyo year overview and on the Sources, method and limits page.
Matsudo, Kashiwa and Nagareyama lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.