Climate averages 1991–2020
Komatsu weather
in September.
A warm, very wet month: the 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Komatsu: daytime highs average 25.0°C and nights cool to about 19.3°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 197 mm of rain on roughly 14 days, which makes September a very wet month (the 9th 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 Matsutō (16 km away). In September its highs average 25.2°C, about as warm as Komatsu, with 197 mm of rain.
Among the 303 cities listed in Japan, Komatsu ranks joint 222nd of 303 for the warmest September highs and joint 183rd of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Komatsu is 0.6°C cooler than that mean.
From September to October, average highs fall by 5.2°C to 19.9°C, and monthly rainfall falls from 197 mm to 159 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
Komatsu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.7°C-0.1°C | -0.1°C | 218 | 24.0 | 10.010 h |
| February | 6.2°C-0.3°C | -0.3°C | 149 | 19.5 | 10.811 h |
| March | 10.0°C2.6°C | 2.6°C | 149 | 16.9 | 11.912 h |
| April | 15.4°C7.6°C | 7.6°C | 125 | 12.9 | 13.113 h |
| May | 20.2°C12.8°C | 12.8°C | 130 | 12.5 | 14.114 h |
| June | 23.6°C17.4°C | 17.4°C | 160 | 12.5 | 14.615 h |
| July | 27.3°C22.1°C | 22.1°C | 215 | 15.5 | 14.414 h |
| August | 28.8°C23.2°C | 23.2°C | 145 | 13.0 | 13.514 h |
| September, selected | 25.0°C19.3°C | 19.3°C | 197 | 14.4 | 12.412 h |
| October | 19.9°C13.7°C | 13.7°C | 159 | 13.6 | 11.311 h |
| November | 14.5°C8.1°C | 8.1°C | 172 | 17.3 | 10.310 h |
| December | 8.9°C2.9°C | 2.9°C | 230 | 23.0 | 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
- Matsutō in SeptemberJapan · 16 kmHigh 25.2°C · Low 18.5°C · 197 mm rain
- Kanazawa in SeptemberJapan · 26 kmHigh 25.5°C · Low 17.9°C · 197 mm rain
- Fukui-shi in SeptemberJapan · 43 kmHigh 25.0°C · Low 19.9°C · 222 mm rain
- Echizen in SeptemberJapan · 63 kmHigh 25.2°C · Low 19.9°C · 222 mm rain
- Takaoka in SeptemberJapan · 64 kmHigh 25.0°C · Low 18.2°C · 236 mm rain
- Imizu in SeptemberJapan · 73 kmHigh 24.6°C · Low 17.8°C · 211 mm rain
- Toyama in SeptemberJapan · 76 kmHigh 24.3°C · Low 17.1°C · 211 mm rain
- Takayama in SeptemberJapan · 78 kmHigh 23.1°C · Low 15.3°C · 216 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 Komatsu) is explained once on the Komatsu year overview and on the Sources, method and limits page.
Kanazawa and Matsutō lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.