Climate averages 1991–2020
Chiba 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 Chiba: daytime highs average 28.2°C and nights cool to about 22.4°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 155 mm of rain on roughly 13 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 Ichihara (10 km away). In July its highs average 28.1°C, about as warm as Chiba, with 155 mm of rain.
Among the 303 cities listed in Japan, Chiba ranks joint 163rd of 303 for the warmest July highs and joint 39th of 303 for the driest July (rainfall, lowest first). The mean July high of those 303 cities is 27.9°C; Chiba 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 155 mm to 118 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
Chiba climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.7°C1.9°C | 1.9°C | 86 | 7.8 | 10.010 h |
| February | 9.4°C2.2°C | 2.2°C | 83 | 8.8 | 10.911 h |
| March | 12.6°C5.1°C | 5.1°C | 149 | 13.0 | 11.912 h |
| April | 17.3°C9.8°C | 9.8°C | 138 | 12.9 | 13.113 h |
| May | 21.6°C14.7°C | 14.7°C | 149 | 12.1 | 14.014 h |
| June | 24.5°C18.5°C | 18.5°C | 189 | 14.3 | 14.515 h |
| July, selected | 28.2°C22.4°C | 22.4°C | 155 | 12.9 | 14.314 h |
| August | 29.6°C23.8°C | 23.8°C | 118 | 11.5 | 13.514 h |
| September | 26.1°C20.9°C | 20.9°C | 207 | 14.7 | 12.412 h |
| October | 21.0°C15.5°C | 15.5°C | 251 | 14.4 | 11.311 h |
| November | 16.0°C10.0°C | 10.0°C | 126 | 11.8 | 10.310 h |
| December | 11.1°C4.8°C | 4.8°C | 80 | 8.7 | 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
- Ichihara in JulyJapan · 10 kmHigh 28.1°C · Low 22.6°C · 155 mm rain
- Narashino in JulyJapan · 11 kmHigh 28.2°C · Low 22.2°C · 153 mm rain
- Yachiyo in JulyJapan · 15 kmHigh 28.2°C · Low 22.1°C · 153 mm rain
- Sakura in JulyJapan · 17 kmHigh 28.4°C · Low 22.2°C · 150 mm rain
- Urayasu in JulyJapan · 21 kmHigh 28.3°C · Low 22.3°C · 153 mm rain
- Kamagaya in JulyJapan · 22 kmHigh 28.3°C · Low 21.9°C · 153 mm rain
- Mobara in JulyJapan · 25 kmHigh 27.8°C · Low 22.7°C · 135 mm rain
- Inzai in JulyJapan · 26 kmHigh 28.6°C · Low 21.9°C · 150 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 Chiba) is explained once on the Chiba year overview and on the Sources, method and limits page.
Ichihara and Kisarazu lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.