Climate averages 1991–2020
Hirosaki weather
in September.
A warm, wet month: the joint 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 Hirosaki: daytime highs average 22.7°C and nights cool to about 14.9°C. By daytime temperature it is the joint 3rd warmest of the 12 months.
Expect about 154 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 30 min on an average September day.
The nearest other city in this atlas is Aomori (33 km away). In September its highs average 22.9°C, about as warm as Hirosaki, with 145 mm of rain.
Among the 303 cities listed in Japan, Hirosaki ranks 287th of 303 for the warmest September highs and joint 33rd of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Hirosaki is 3.0°C cooler than that mean.
From September to October, average highs fall by 6.3°C to 16.4°C, and monthly rainfall falls from 154 mm to 129 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
Hirosaki climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.3°C-6.6°C | -6.6°C | 82 | 17.0 | 9.610 h |
| February | 0.7°C-6.1°C | -6.1°C | 81 | 15.7 | 10.611 h |
| March | 4.4°C-3.6°C | -3.6°C | 101 | 16.7 | 11.912 h |
| April | 12.0°C1.7°C | 1.7°C | 98 | 13.7 | 13.313 h |
| May | 18.7°C8.0°C | 8.0°C | 104 | 13.1 | 14.414 h |
| June | 22.7°C13.2°C | 13.2°C | 109 | 13.1 | 15.015 h |
| July | 25.6°C18.0°C | 18.0°C | 163 | 16.4 | 14.815 h |
| August | 26.7°C19.1°C | 19.1°C | 176 | 16.0 | 13.814 h |
| September, selected | 22.7°C14.9°C | 14.9°C | 154 | 14.2 | 12.513 h |
| October | 16.4°C8.1°C | 8.1°C | 129 | 13.8 | 11.211 h |
| November | 9.2°C1.9°C | 1.9°C | 112 | 16.2 | 10.010 h |
| December | 2.3°C-4.2°C | -4.2°C | 106 | 18.0 | 9.39 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
- Aomori in SeptemberJapan · 33 kmHigh 22.9°C · Low 15.8°C · 145 mm rain
- Hachinohe in SeptemberJapan · 87 kmHigh 22.9°C · Low 16.0°C · 127 mm rain
- Akita in SeptemberJapan · 102 kmHigh 23.0°C · Low 17.5°C · 190 mm rain
- Morioka in SeptemberJapan · 115 kmHigh 21.9°C · Low 14.8°C · 137 mm rain
- Daisen in SeptemberJapan · 128 kmHigh 23.3°C · Low 15.8°C · 152 mm rain
- Hakodate in SeptemberJapan · 133 kmHigh 21.3°C · Low 16.9°C · 185 mm rain
- Yurihonjō in SeptemberJapan · 138 kmHigh 23.6°C · Low 17.6°C · 185 mm rain
- Yokote in SeptemberJapan · 142 kmHigh 23.1°C · Low 15.8°C · 156 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 Hirosaki) is explained once on the Hirosaki year overview and on the Sources, method and limits page.