Climate averages 1991–2020
Shinagawa weather
in September.
A warm, very 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 Shinagawa: daytime highs average 26.4°C and nights cool to about 19.8°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 232 mm of rain on roughly 15 days, which makes September a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 25 min on an average September day.
The nearest other city in this atlas is Matsuyama (32 km away). In September its highs average 27.3°C, 0.9°C warmer than Shinagawa, with 187 mm of rain.
Among the 303 cities listed in Japan, Shinagawa ranks joint 110th of 303 for the warmest September highs and joint 257th of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Shinagawa is 0.7°C warmer than that mean.
From September to October, average highs fall by 5.2°C to 21.2°C, and monthly rainfall falls from 232 mm to 168 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
Shinagawa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.1°C0.6°C | 0.6°C | 71 | 11.2 | 10.210 h |
| February | 8.6°C0.9°C | 0.9°C | 87 | 11.0 | 11.011 h |
| March | 12.7°C3.7°C | 3.7°C | 129 | 13.6 | 12.012 h |
| April | 18.0°C8.6°C | 8.6°C | 146 | 11.6 | 13.013 h |
| May | 22.5°C13.8°C | 13.8°C | 174 | 11.9 | 13.914 h |
| June | 25.5°C18.4°C | 18.4°C | 297 | 17.0 | 14.314 h |
| July | 29.1°C22.7°C | 22.7°C | 279 | 18.8 | 14.214 h |
| August | 29.7°C23.3°C | 23.3°C | 194 | 17.2 | 13.413 h |
| September, selected | 26.4°C19.8°C | 19.8°C | 232 | 15.0 | 12.412 h |
| October | 21.2°C13.9°C | 13.9°C | 168 | 10.4 | 11.411 h |
| November | 15.6°C8.0°C | 8.0°C | 92 | 9.6 | 10.510 h |
| December | 9.7°C2.9°C | 2.9°C | 84 | 11.1 | 10.010 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
- Matsuyama in SeptemberJapan · 32 kmHigh 27.3°C · Low 21.5°C · 187 mm rain
- Saijō in SeptemberJapan · 35 kmHigh 27.7°C · Low 21.7°C · 216 mm rain
- Niihama in SeptemberJapan · 45 kmHigh 27.1°C · Low 21.4°C · 216 mm rain
- Imabari in SeptemberJapan · 48 kmHigh 26.5°C · Low 21.9°C · 196 mm rain
- Kochi in SeptemberJapan · 50 kmHigh 26.8°C · Low 20.6°C · 323 mm rain
- Uwajima in SeptemberJapan · 62 kmHigh 27.9°C · Low 21.8°C · 178 mm rain
- Shikokuchūō in SeptemberJapan · 63 kmHigh 27.1°C · Low 21.1°C · 249 mm rain
- Kure in SeptemberJapan · 78 kmHigh 25.5°C · Low 21.1°C · 163 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 Shinagawa) is explained once on the Shinagawa year overview and on the Sources, method and limits page.