Climate averages 1991–2020
Kushiro weather
in September.
A mild, wet month: the 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Kushiro: daytime highs average 18.6°C and nights cool to about 14.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 160 mm of rain on roughly 12 days, which makes September a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 33 min on an average September day.
The nearest other city in this atlas is Obihiro (95 km away). In September its highs average 20.4°C, 1.8°C warmer than Kushiro, with 165 mm of rain.
Among the 303 cities listed in Japan, Kushiro ranks 303rd of 303 for the warmest September highs and joint 46th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Kushiro is 7.1°C cooler than that mean.
From September to October, average highs fall by 4.7°C to 13.9°C, and monthly rainfall falls from 160 mm to 118 mm.
The annual picture
September in context
Monthly precipitation
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
Kushiro climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.8°C-8.2°C | -8.2°C | 51 | 6.3 | 9.49 h |
| February | -1.8°C-9.2°C | -9.2°C | 38 | 6.2 | 10.510 h |
| March | 1.7°C-5.0°C | -5.0°C | 68 | 8.1 | 11.912 h |
| April | 6.8°C0.4°C | 0.4°C | 85 | 9.4 | 13.413 h |
| May | 11.1°C5.4°C | 5.4°C | 105 | 10.5 | 14.615 h |
| June | 14.3°C9.7°C | 9.7°C | 85 | 9.3 | 15.315 h |
| July | 18.1°C14.0°C | 14.0°C | 125 | 10.7 | 15.015 h |
| August | 20.3°C16.3°C | 16.3°C | 147 | 12.1 | 13.914 h |
| September, selected | 18.6°C14.0°C | 14.0°C | 160 | 11.5 | 12.513 h |
| October | 13.9°C8.4°C | 8.4°C | 118 | 9.5 | 11.111 h |
| November | 7.7°C2.1°C | 2.1°C | 75 | 8.6 | 9.810 h |
| December | 1.2°C-4.2°C | -4.2°C | 71 | 8.2 | 9.19 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
- Obihiro in SeptemberJapan · 95 kmHigh 20.4°C · Low 12.3°C · 165 mm rain
- Kitami in SeptemberJapan · 100 kmHigh 20.0°C · Low 12.3°C · 122 mm rain
- Asahikawa in SeptemberJapan · 185 kmHigh 19.8°C · Low 11.6°C · 142 mm rain
- Iwamizawa in SeptemberJapan · 214 kmHigh 20.8°C · Low 13.1°C · 126 mm rain
- Chitose in SeptemberJapan · 222 kmHigh 20.4°C · Low 14.2°C · 137 mm rain
- Eniwa in SeptemberJapan · 228 kmHigh 20.4°C · Low 13.6°C · 138 mm rain
- Tomakomai in SeptemberJapan · 229 kmHigh 20.1°C · Low 15.1°C · 177 mm rain
- Ebetsu in SeptemberJapan · 230 kmHigh 20.5°C · Low 13.5°C · 138 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 Kushiro) is explained once on the Kushiro year overview and on the Sources, method and limits page.