When to go · Iiyama
Iiyama in September
Great month. Inside Iiyama's best window: Dec–Mar, Apr–Oct.
Key facts
- Verdict
- Great
- Temperature
- 26°C (79°F)79°F (26°C) / 14°C (57°F)57°F (14°C)
- average high / low
- Rain days
- 10
- Crowds
- Medium
- Japan overall
- Prices
- Medium
- Japan overall
Verdict
Inside Iiyama's best window: Dec–Mar, Apr–Oct.
Is another month better than September?
No other month rates higher than September for Iiyama in this guide.
Weather in September
- IiyamaHighs around 26 °C (79 °F), lows around 14 °C (57 °F), rain on about 10 daysHighs around 79 °F (26 °C), lows around 57 °F (14 °C), rain on about 10 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 Iiyama, side by side.
Verdict
Sep: Great
Jan: Great
Daytime high
Sep: 26 °C (79 °F)79 °F (26 °C)
Jan: 4 °C (39 °F)39 °F (4 °C)
Night low
Sep: 14 °C (57 °F)57 °F (14 °C)
Jan: -4 °C (25 °F)25 °F (-4 °C)
Rain days
Sep: 10
Jan: 7 (better)
Crowds
Sep: Medium
Jan: Low
Prices
Sep: Medium
Jan: Low
Festivals listed
Sep: 0
Jan: 1
September: Inside Iiyama's best window: Dec–Mar, Apr–Oct.
January: Inside Iiyama's best window: Dec–Mar, Apr–Oct.
Iiyama: figures are long-term averages from this guide, not a forecast.
What to pack
- A rain jacket or umbrella and shoes that dry fast