When to go · Shinonsen

Shinonsen in September

Mixed month. Outside the best window (Apr–May, Oct–Nov; Nov–Mar for crab). Across Japan: Still hot; typhoon peak can cancel flights and ferries for a day or two.

Key facts

Verdict: Mixed
Temperature: 27°C (81°F)81°F (27°C) / 19°C (66°F)66°F (19°C); average high / low
Rain days: 13
Crowds: Medium; Japan overall
Prices: Medium; Japan overall

Plan around it

Verdict

MixedJapan month rating

Outside the best window (Apr–May, Oct–Nov; Nov–Mar for crab). 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

Long-term averages

ShinonsenHighs around 27 °C (81 °F), lows around 19 °C (66 °F), rain on about 13 daysHighs around 81 °F (27 °C), lows around 66 °F (19 °C), rain on about 13 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 Shinonsen, side by side.

First month

Second month

Verdict
Sep: Mixed
Jan: Great (better)
Daytime high
Sep: 27 °C (81 °F)81 °F (27 °C)
Jan: 8 °C (46 °F)46 °F (8 °C)
Night low
Sep: 19 °C (66 °F)66 °F (19 °C)
Jan: 1 °C (34 °F)34 °F (1 °C)
Rain days
Sep: 13 (better)
Jan: 15
Crowds
Sep: Medium
Jan: Low
Prices
Sep: Medium
Jan: Low
Festivals listed
Sep: 0
Jan: 1

September: Outside the best window (Apr–May, Oct–Nov; Nov–Mar for crab). Across Japan: Still hot; typhoon peak can cancel flights and ferries for a day or two.

January: Inside Shinonsen's best window: Apr–May, Oct–Nov; Nov–Mar for crab.

Shinonsen: figures are long-term averages from this guide, not a forecast.

What to pack

A rain jacket or umbrella and shoes that dry fast

Build the full packing list for your trip →

Across Japan in September →