Sapporo in September
In September, Sapporo averages 22°C (71°F) during the day and 14°C (56°F) at night, with frequent rain — about 19 days of the month see precipitation (134 mm total).
ShoulderConditions are comfortable for sightseeing without being sweltering. Expect daily rain or showers, often in heavy bursts.
September offers comfortable temperatures in Sapporo, with some rain to plan around.
How September compares to the rest of the year in Sapporo
September is one of the warmest months in Sapporo (3rd of 12) and moderately rainy compared to the rest of the year (8th of 12). Daytime temperature runs 10°C above the annual average (12°C). September runs 3°C cooler than August (25°C) and cools 7°C in October (15°C).
September sunrise & sunset in Sapporo
Times shown for Sapporo local time (Asia/Tokyo), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Sapporo — September
Golden-hour and blue-hour windows for the 15th of September, in Sapporo's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Sapporo in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Sapporo's popularity.
Crowds & pricing — September in Sapporo
Sapporo is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: comfortable tourism weather
Sun & mosquito risk — September in Sapporo
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sapporo in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | -3°C / 27°F | -10°C / 15°F | 61 mm | 23 | — |
| February | -2°C / 29°F | -9°C / 16°F | 64 mm | 22 | — |
| March | 4°C / 40°F | -4°C / 25°F | 71 mm | 19 | — |
| April | 12°C / 53°F | 1°C / 34°F | 81 mm | 17 | — |
| May | 18°C / 64°F | 8°C / 46°F | 97 mm | 19 | — |
| June | 20°C / 69°F | 12°C / 54°F | 122 mm | 18 | — |
| July | 25°C / 77°F | 17°C / 63°F | 122 mm | 18 | — |
| August | 25°C / 77°F | 18°C / 65°F | 189 mm | 21 | — |
| September | 22°C / 71°F | 14°C / 56°F | 134 mm | 19 | — |
| October | 15°C / 59°F | 6°C / 43°F | 106 mm | 19 | — |
| November | 8°C / 46°F | 0°C / 32°F | 103 mm | 22 | — |
| December | 0°C / 32°F | -7°C / 20°F | 69 mm | 24 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Sapporo in September →
Frequently asked questions
How hot is Sapporo in September?
In September, Sapporo averages a high of 22°C (71°F) and a low of 14°C (56°F) — generally mild and pleasant.
Does it rain a lot in Sapporo in September?
September is quite rainy in Sapporo, with about 19 rainy days on average.
Is September a good time to visit Sapporo?
September is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Sapporo in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Sapporo for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.