Climate averages 1991–2020
Kasukabe weather
in September.
A warm, wet month: the 3rd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Kasukabe: daytime highs average 26.3°C and nights cool to about 19.6°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 171 mm of rain on roughly 14 days, which makes September a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average September day.
The nearest other city in this atlas is Koshigaya (11 km away). In September its highs average 26.3°C, about as warm as Kasukabe, with 171 mm of rain.
Among the 303 cities listed in Japan, Kasukabe ranks joint 115th of 303 for the warmest September highs and joint 79th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Kasukabe is 0.6°C warmer than that mean.
From September to October, average highs fall by 5.5°C to 20.8°C, and monthly rainfall rises from 171 mm to 190 mm.
The annual picture
September 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
Kasukabe climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.1°C-1.8°C | -1.8°C | 57 | 6.1 | 10.010 h |
| February | 9.2°C-1.0°C | -1.0°C | 55 | 6.9 | 10.911 h |
| March | 12.8°C2.5°C | 2.5°C | 99 | 10.8 | 11.912 h |
| April | 18.0°C7.7°C | 7.7°C | 105 | 11.1 | 13.113 h |
| May | 22.6°C13.2°C | 13.2°C | 128 | 12.2 | 14.114 h |
| June | 25.2°C17.6°C | 17.6°C | 152 | 14.1 | 14.615 h |
| July | 28.8°C21.7°C | 21.7°C | 159 | 14.6 | 14.314 h |
| August | 30.1°C23.1°C | 23.1°C | 118 | 12.3 | 13.514 h |
| September, selected | 26.3°C19.6°C | 19.6°C | 171 | 13.7 | 12.412 h |
| October | 20.8°C13.4°C | 13.4°C | 190 | 12.6 | 11.311 h |
| November | 15.6°C6.9°C | 6.9°C | 81 | 9.2 | 10.310 h |
| December | 10.5°C1.1°C | 1.1°C | 52 | 6.5 | 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
September in nearby cities
- Koshigaya in SeptemberJapan · 11 kmHigh 26.3°C · Low 19.8°C · 171 mm rain
- Kukichūō in SeptemberJapan · 12 kmHigh 26.2°C · Low 19.4°C · 171 mm rain
- Saitama in SeptemberJapan · 12 kmHigh 26.3°C · Low 19.6°C · 171 mm rain
- Ageo in SeptemberJapan · 12 kmHigh 26.0°C · Low 19.3°C · 186 mm rain
- Yono in SeptemberJapan · 15 kmHigh 26.0°C · Low 19.4°C · 171 mm rain
- Sōka in SeptemberJapan · 17 kmHigh 26.3°C · Low 20.0°C · 180 mm rain
- Nagareyama in SeptemberJapan · 20 kmHigh 26.3°C · Low 19.8°C · 175 mm rain
- Kazo in SeptemberJapan · 20 kmHigh 26.1°C · Low 19.3°C · 186 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 Kasukabe) is explained once on the Kasukabe year overview and on the Sources, method and limits page.
Saitama, Koshigaya and Kukichūō lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.