When to go · Joetsu
Joetsu 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
- 24°C (75°F)75°F (24°C) / 17°C (63°F)63°F (17°C)
- average high / low
- Rain days
- 7
- 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
- JoetsuHighs around 24 °C (75 °F), lows around 17 °C (63 °F), rain on about 7 daysHighs around 75 °F (24 °C), lows around 63 °F (17 °C), rain on about 7 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 Joetsu, side by side.
Verdict
Sep: Mixed
Apr: Great (better)
Daytime high
Sep: 24 °C (75 °F)75 °F (24 °C)
Apr: 16 °C (61 °F)61 °F (16 °C)
Night low
Sep: 17 °C (63 °F)63 °F (17 °C)
Apr: 6 °C (43 °F)43 °F (6 °C)
Rain days
Sep: 7
Apr: 5 (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 Joetsu's best window: Apr–May, Oct–Nov.
Joetsu: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.