When to go · Shiojiri
Shiojiri in September
Mixed month. Outside the best window (Apr–May, Oct–Nov). Across Japan: Still hot; typhoon peak can cancel flights and ferries for a day or two.
Key facts
- Verdict
- Mixed
- Temperature
- 26°C (79°F)79°F (26°C) / 18°C (64°F)64°F (18°C)
- average high / low
- Rain days
- 11
- Crowds
- Medium
- Japan overall
- Prices
- Medium
- Japan overall
Verdict
Outside the best window (Apr–May, Oct–Nov). Across Japan: Still hot; typhoon peak can cancel flights and ferries for a day or two.
Is another month better than September?
September is rated mixed. These months rate higher:
Weather in September
- ShiojiriHighs around 26 °C (79 °F), lows around 18 °C (64 °F), rain on about 11 daysHighs around 79 °F (26 °C), lows around 64 °F (18 °C), rain on about 11 days
Crowds and prices
- Crowds · Japan overall
- Medium
- Prices · Japan overall
- Medium
Japan overall: Still hot; typhoon peak can cancel flights and ferries for a day or two.
Compare two months
Weather, crowds and prices for any two months in Shiojiri, side by side.
Verdict
Sep: Mixed
Apr: Great (better)
Daytime high
Sep: 26 °C (79 °F)79 °F (26 °C)
Apr: 17 °C (63 °F)63 °F (17 °C)
Night low
Sep: 18 °C (64 °F)64 °F (18 °C)
Apr: 6 °C (43 °F)43 °F (6 °C)
Rain days
Sep: 11
Apr: 9 (better)
Crowds
Sep: Medium
Apr: High
Prices
Sep: Medium
Apr: High
Festivals listed
Sep: 0
Apr: 2
September: Outside the best window (Apr–May, Oct–Nov). Across Japan: Still hot; typhoon peak can cancel flights and ferries for a day or two.
April: Inside Shiojiri's best window: Apr–May, Oct–Nov.
Shiojiri: figures are long-term averages from this guide, not a forecast.
What to pack
- A rain jacket or umbrella and shoes that dry fast