Climate averages 1991–2020
Isesaki weather
in July.
A warm, very wet month: the 2nd warmest and one of the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Isesaki: daytime highs average 27.2°C and nights cool to about 20.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 199 mm of rain on roughly 18 days, which makes July a very wet month (one of the wettest months of the year). Daylight, from sunrise to sunset, lasts about 14 h 22 min on an average July day.
The nearest other city in this atlas is Honjō (9 km away). In July its highs average 27.5°C, about as warm as Isesaki, with 199 mm of rain.
Among the 303 cities listed in Japan, Isesaki ranks joint 228th of 303 for the warmest July highs and joint 142nd of 303 for the driest July (rainfall, lowest first). The mean July high of those 303 cities is 27.9°C; Isesaki is 0.7°C cooler than that mean.
From July to August, average highs rise by 1.1°C to 28.3°C, and monthly rainfall falls from 199 mm to 152 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
Isesaki climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.5°C-2.3°C | -2.3°C | 54 | 6.5 | 10.010 h |
| February | 7.5°C-1.9°C | -1.9°C | 54 | 7.3 | 10.811 h |
| March | 11.2°C1.0°C | 1.0°C | 99 | 11.9 | 11.912 h |
| April | 16.6°C6.1°C | 6.1°C | 111 | 11.7 | 13.113 h |
| May | 21.2°C11.5°C | 11.5°C | 132 | 12.9 | 14.114 h |
| June | 23.7°C16.2°C | 16.2°C | 173 | 16.4 | 14.615 h |
| July, selected | 27.2°C20.2°C | 20.2°C | 199 | 17.8 | 14.414 h |
| August | 28.3°C21.4°C | 21.4°C | 152 | 16.0 | 13.514 h |
| September | 24.4°C17.9°C | 17.9°C | 199 | 16.1 | 12.412 h |
| October | 19.1°C11.8°C | 11.8°C | 187 | 12.8 | 11.311 h |
| November | 14.0°C5.3°C | 5.3°C | 69 | 7.8 | 10.310 h |
| December | 9.1°C0.4°C | 0.4°C | 47 | 6.6 | 9.710 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
- Honjō in JulyJapan · 9 kmHigh 27.5°C · Low 20.8°C · 199 mm rain
- Maebashi in JulyJapan · 14 kmHigh 27.3°C · Low 20.2°C · 218 mm rain
- Ōta, Japan in JulyJapan · 15 kmHigh 28.0°C · Low 20.9°C · 199 mm rain
- Kiryū in JulyJapan · 15 kmHigh 28.0°C · Low 20.7°C · 217 mm rain
- Takasaki in JulyJapan · 17 kmHigh 26.9°C · Low 19.8°C · 288 mm rain
- Shibukawa in JulyJapan · 26 kmHigh 27.3°C · Low 20.3°C · 218 mm rain
- Kumagaya in JulyJapan · 26 kmHigh 28.5°C · Low 21.6°C · 220 mm rain
- Tatebayashi in JulyJapan · 31 kmHigh 28.3°C · Low 21.1°C · 220 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 Isesaki) is explained once on the Isesaki year overview and on the Sources, method and limits page.
Ōta, Japan and Honjō lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.