Climate averages 1991–2020
Chikusei weather
in September.
A warm, wet month: the 3rd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Chikusei: daytime highs average 26.1°C and nights cool to about 19.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 164 mm of rain on roughly 14 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 27 min on an average September day.
The nearest other city in this atlas is Mooka (13 km away). In September its highs average 25.8°C, about as warm as Chikusei, with 165 mm of rain.
Among the 303 cities listed in Japan, Chikusei ranks joint 149th of 303 for the warmest September highs and 60th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Chikusei is 0.4°C warmer than that mean.
From September to October, average highs fall by 5.5°C to 20.6°C, and monthly rainfall rises from 164 mm to 176 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
Chikusei climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.7°C-1.7°C | -1.7°C | 55 | 6.1 | 10.010 h |
| February | 8.8°C-1.1°C | -1.1°C | 55 | 6.7 | 10.811 h |
| March | 12.5°C2.0°C | 2.0°C | 100 | 11.5 | 11.912 h |
| April | 17.7°C7.2°C | 7.2°C | 107 | 11.0 | 13.113 h |
| May | 22.4°C12.7°C | 12.7°C | 134 | 12.5 | 14.114 h |
| June | 25.1°C17.2°C | 17.2°C | 147 | 14.6 | 14.615 h |
| July | 28.7°C21.3°C | 21.3°C | 165 | 15.8 | 14.414 h |
| August | 29.9°C22.6°C | 22.6°C | 123 | 13.7 | 13.514 h |
| September, selected | 26.1°C19.1°C | 19.1°C | 164 | 14.2 | 12.412 h |
| October | 20.6°C13.0°C | 13.0°C | 176 | 12.3 | 11.311 h |
| November | 15.3°C6.4°C | 6.4°C | 80 | 8.7 | 10.310 h |
| December | 10.1°C0.7°C | 0.7°C | 52 | 6.5 | 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
September in nearby cities
- Mooka in SeptemberJapan · 13 kmHigh 25.8°C · Low 18.5°C · 165 mm rain
- Oyama in SeptemberJapan · 16 kmHigh 25.7°C · Low 18.9°C · 206 mm rain
- Tochigi in SeptemberJapan · 24 kmHigh 25.5°C · Low 18.8°C · 239 mm rain
- Kasama, Japan in SeptemberJapan · 27 kmHigh 24.6°C · Low 18.5°C · 174 mm rain
- Koga in SeptemberJapan · 28 kmHigh 26.0°C · Low 19.2°C · 206 mm rain
- Tsukuba in SeptemberJapan · 29 kmHigh 26.1°C · Low 19.7°C · 167 mm rain
- Utsunomiya in SeptemberJapan · 29 kmHigh 24.5°C · Low 17.4°C · 165 mm rain
- Ishioka in SeptemberJapan · 29 kmHigh 25.8°C · Low 20.0°C · 174 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 Chikusei) is explained once on the Chikusei year overview and on the Sources, method and limits page.