Climate averages 1991–2020
Isehara weather
in June.
A warm, very wet month: the 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Isehara: daytime highs average 23.3°C and nights cool to about 18.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 203 mm of rain on roughly 16 days, which makes June a very wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 30 min on an average June day.
The nearest other city in this atlas is Atsugi (7 km away). In June its highs average 22.8°C, about as warm as Isehara, with 203 mm of rain.
Among the 303 cities listed in Japan, Isehara ranks joint 247th of 303 for the warmest June highs and joint 181st of 303 for the driest June (rainfall, lowest first). The mean June high of those 303 cities is 24.4°C; Isehara is 1.1°C cooler than that mean.
From June to July, average highs rise by 3.6°C to 26.9°C, and monthly rainfall rises from 203 mm to 205 mm.
The annual picture
June 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
Isehara climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.7°C1.7°C | 1.7°C | 82 | 8.4 | 10.110 h |
| February | 9.3°C1.8°C | 1.8°C | 85 | 10.2 | 10.911 h |
| March | 12.3°C4.9°C | 4.9°C | 154 | 15.4 | 11.912 h |
| April | 16.6°C9.5°C | 9.5°C | 147 | 14.4 | 13.113 h |
| May | 20.5°C14.3°C | 14.3°C | 158 | 13.6 | 14.014 h |
| June, selected | 23.3°C18.3°C | 18.3°C | 203 | 16.4 | 14.515 h |
| July | 26.9°C22.3°C | 22.3°C | 205 | 17.4 | 14.314 h |
| August | 28.1°C23.5°C | 23.5°C | 160 | 16.3 | 13.513 h |
| September | 25.1°C20.5°C | 20.5°C | 229 | 16.1 | 12.412 h |
| October | 20.3°C15.2°C | 15.2°C | 231 | 14.5 | 11.311 h |
| November | 15.7°C9.8°C | 9.8°C | 110 | 11.7 | 10.310 h |
| December | 11.1°C4.6°C | 4.6°C | 76 | 8.8 | 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
June in nearby cities
- Atsugi in JuneJapan · 7 kmHigh 22.8°C · Low 18.1°C · 203 mm rain
- Hiratsuka in JuneJapan · 8 kmHigh 22.7°C · Low 18.2°C · 231 mm rain
- Hadano in JuneJapan · 8 kmHigh 23.7°C · Low 18.2°C · 231 mm rain
- Chigasaki in JuneJapan · 11 kmHigh 22.5°C · Low 18.5°C · 204 mm rain
- Minamirinkan in JuneJapan · 16 kmHigh 23.1°C · Low 17.5°C · 175 mm rain
- Fujisawa in JuneJapan · 16 kmHigh 22.5°C · Low 18.7°C · 204 mm rain
- Sagamihara in JuneJapan · 20 kmHigh 23.8°C · Low 17.0°C · 203 mm rain
- Machida in JuneJapan · 20 kmHigh 22.7°C · Low 17.4°C · 175 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 Isehara) is explained once on the Isehara year overview and on the Sources, method and limits page.
Aihara, Sagamihara and Atsugi lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.