Climate averages 1991–2020
Nagahama 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 Nagahama: daytime highs average 25.8°C and nights cool to about 19.5°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 222 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 26 min on an average September day.
The nearest other city in this atlas is Hikone (15 km away). In September its highs average 25.8°C, about as warm as Nagahama, with 212 mm of rain.
Among the 303 cities listed in Japan, Nagahama ranks joint 176th of 303 for the warmest September highs and joint 242nd of 303 for the driest September (rainfall, lowest first). The mean September high of those 303 cities is 25.7°C; Nagahama is 0.2°C warmer than that mean.
From September to October, average highs fall by 5.4°C to 20.4°C, and monthly rainfall falls from 222 mm to 171 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
Nagahama climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.3°C0.2°C | 0.2°C | 113 | 18.1 | 10.110 h |
| February | 7.1°C-0.1°C | -0.1°C | 102 | 15.2 | 10.911 h |
| March | 11.2°C2.7°C | 2.7°C | 144 | 15.1 | 11.912 h |
| April | 16.6°C7.5°C | 7.5°C | 152 | 13.0 | 13.113 h |
| May | 21.3°C12.7°C | 12.7°C | 181 | 12.5 | 14.014 h |
| June | 24.8°C17.5°C | 17.5°C | 228 | 15.4 | 14.515 h |
| July | 28.4°C22.1°C | 22.1°C | 287 | 18.3 | 14.314 h |
| August | 29.7°C23.1°C | 23.1°C | 173 | 15.7 | 13.513 h |
| September, selected | 25.8°C19.5°C | 19.5°C | 222 | 14.5 | 12.412 h |
| October | 20.4°C13.7°C | 13.7°C | 171 | 12.4 | 11.311 h |
| November | 14.8°C8.1°C | 8.1°C | 110 | 12.8 | 10.310 h |
| December | 9.1°C2.9°C | 2.9°C | 111 | 17.3 | 9.810 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
- Hikone in SeptemberJapan · 15 kmHigh 25.8°C · Low 19.5°C · 212 mm rain
- Youkaichi in SeptemberJapan · 30 kmHigh 26.2°C · Low 19.2°C · 202 mm rain
- Ōgaki in SeptemberJapan · 32 kmHigh 26.6°C · Low 19.3°C · 246 mm rain
- Ōmihachiman in SeptemberJapan · 32 kmHigh 26.2°C · Low 19.1°C · 179 mm rain
- Moriyama in SeptemberJapan · 44 kmHigh 26.3°C · Low 19.3°C · 153 mm rain
- Gifu in SeptemberJapan · 45 kmHigh 26.4°C · Low 18.6°C · 291 mm rain
- Kōka in SeptemberJapan · 46 kmHigh 26.3°C · Low 19.2°C · 202 mm rain
- Kusatsu in SeptemberJapan · 49 kmHigh 26.7°C · Low 19.4°C · 153 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 Nagahama) is explained once on the Nagahama year overview and on the Sources, method and limits page.