Temperature
Pleasant by day, brisk at night.
70°Ftypical September high
Typical range
September climate
September in Sapporo
Japan · East Asia
Mild days and some sun. Heavier storm-season rain is the main drawback.
Some tradeoffs
Daytime high
70°F
Lows around 60°F
Rain
Several rainy days
Sun
8.5 h/day
Air feel
Comfortable
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 11 wet days, more than in most months.
37%wet-day frequency
Precip amountWet-day chanceSnowfall
Sunshine
A mix of sunshine and cloud.
8.5 hSeptember sunshine
Heat & humidity by month
ComfortableSeptember
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 67° and nights feel near 59°.
FrigidFreezingVery coldColdCoolComfortableNight hours
Clear sky
Mostly cloudy skies this month.
36%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
8 mphSeptember Light breeze
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 68°F, easing to about 65°F in early evening.
Avg temp Typical range
Morning67°F
Rain22%
Cloud64%
Humid airLow
Sun intensityModerate
Midday70°F
Rain23%
Cloud66%
Humid airLow
Sun intensityModerate
Late afternoon68°F
Rain20%
Cloud64%
Humid airLow
Sun intensityLow
Early evening65°F
Rain18%
Cloud62%
Humid airLow
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 31 | 19 | 1.5 | 7 | 7.6 | 71 |
| Feb | 32 | 20 | 1.4 | 7 | 8.6 | 71 |
| Mar | 39 | 28 | 2.3 | 9 | 9.5 | 72 |
| Apr | 48 | 38 | 2.9 | 11 | 10.0 | 73 |
| May | 56 | 47 | 3.7 | 12 | 9.9 | 79 |
| Jun | 63 | 55 | 3.3 | 10 | 10.1 | 84 |
| Jul | 71 | 64 | 4.5 | 12 | 9.1 | 87 |
| Aug | 74 | 67 | 6.3 | 13 | 8.8 | 85 |
| Sep | 70 | 60 | 5.5 | 11 | 8.5 | 79 |
| Oct | 60 | 49 | 3.7 | 10 | 8.5 | 73 |
| Nov | 47 | 37 | 3.0 | 10 | 7.3 | 71 |
| Dec | 35 | 26 | 2.2 | 9 | 7.1 | 69 |
Similar climates
Similar
Similar travel styleSeoulSouth KoreaSimilar travel styleChicagoUnited StatesSimilar travel styleTorontoCanadaSimilar travel styleNew York CityUnited States
Want a side-by-side climate view? Compare Sapporo with Seoul.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology