Hokkaido weather in September
“Mild and bright — an underrated time to visit.”
Roughly 13 rainy days across the month, on average.
September in Hokkaido brings mild, transitional weather as summer fades into autumn. Expect average highs of 18°C (64°F) and lows of 10.4°C (51°F). The month sees moderate rainfall totaling 144.3mm spread across roughly 13 rainy days, so mornings often start damp. You'll enjoy around 8 hours of sunshine daily, providing decent daylight for exploration despite the increased cloud cover.
This is shoulder season in Hokkaido—fewer crowds than summer, but the landscape is still vibrant green with early autumn colors appearing in late September. Local festivals wind down, and the atmosphere becomes quieter and more reflective. It's an ideal time for travelers seeking authentic experiences without peak-season tourist masses.
For 2026, pack layers and a reliable rain jacket. September suits hiking, visiting onsen towns, and exploring national parks comfortably. The mild temperatures mean you won't need heavy winter gear, but a light sweater and waterproof bag are essential. Book accommodations early if visiting popular areas like Asahikawa or Sapporo, as weather remains favorable throughout the month.
What to pack for Hokkaido in September
Layer up for Hokkaido's cool, damp September weather. Temperatures fluctuate between morning chill and afternoon warmth, and rain is frequent. Bring breathable base layers, a water-resistant outer shell, and a compact umbrella. Comfortable walking shoes with good grip are essential for wet streets and nature trails.
- Lightweight merino wool sweater
- Water-resistant rain jacket
- Long-sleeve linen shirt
- Waterproof hiking boots or trail shoes
- Compact travel umbrella
What to pack for Hokkaido in September
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Where to stay in Hokkaido
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Compare hotels on Booking.com→Things worth doing
Hiking in Daisetsuzan National Park, visiting hot springs and onsen resorts, exploring Sapporo's parks and museums, cycling through rural Hokkaido countryside.
Other places with a similar climate right now
Hokkaido in September — FAQ
Q01Is September a good time to visit Hokkaido?
Is September a good time to visit Hokkaido?
It is a fair time to visit — expect variable conditions and plan flexibility. In September, Hokkaido averages a high of 18°C (64°F) and a low of 10°C (51°F), with 144mm of rainfall across roughly 13 rainy days.
Q02What is the average temperature in Hokkaido in September?
What is the average temperature in Hokkaido in September?
The average high temperature in Hokkaido during September is 18°C (64°F), with an average low of 10°C (51°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Hokkaido have in September?
How many rainy days does Hokkaido have in September?
Hokkaido averages approximately 13 rainy days in September, with a total monthly rainfall of about 144mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Hokkaido in September?
What should I pack for Hokkaido in September?
For Hokkaido in September, pack layered clothing for changing temperatures, a compact umbrella or waterproof jacket, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Hokkaido in September?
How crowded is Hokkaido in September?
Tourist crowds in Hokkaido during September are typically moderate — shoulder season, a sweet spot between crowds and weather. Consider this when planning accommodation — prices track crowd levels closely.