Early autumn · Weather & things to do
Otaru in September
Otaru cools off: highs slip to 71°F (22°C), from 78°F in August, with lows of 56°F (13°C) and about 5.4 in (137 mm) of rain.
September opens the best stretch on our comfort score, at 75/100 (3rd of 12).
- Avg high
- 71°F (22°C)
- Avg low
- 56°F (13°C)
- Rain
- 5.4 in (137 mm)
- Humidity
- 85%
- Cloud cover
- 70%
- Daylight
- ~12 h 17 min
- Comfort score
- 75/100 · Great
What September feels like
Days are warm, averaging 71°F (22°C).
After dark, temperatures fall to about 56°F (13°C).
Expect regular rain: about 5.4 in (137 mm) falls in the month.
Plan around September
September is one of Otaru's best months on the climate data.
- Last warm month for a while: October highs fall to 58°F.
- Inside the wettest three-month stretch, July – September.
- Opens the best-scoring stretch on our comfort score: May & June and September.
- Last of the best-scoring months: by October, the score drops to 66/100.
- Our Hokkaido: Sapporo, Otaru & Furano route recommends Jul – Aug, Jan – Feb, so September falls outside its suggested window.
What to pack for September
- Light, breathable clothes71°F afternoons
- Rain jacket and waterproof shoes5.4 in of rain on average
- Comfortable walking shoesmost picks involve some walking
What to do in Otaru in September
With conditions on your side, the picks below favor time outside.
Sakaimachi Street
Merchant street of Meiji-era buildings filled with glass, sweets and music boxes.
Why now September scores 75/100 for comfort, good conditions for being outside.
Mount Tengu
Ropeway to a lookout over the town and Ishikari Bay, with skiing in winter.
Why now Highs near 71°F and 5.4 in of monthly rain make this an easy outdoor pick.
Masazushi
Family-run sushi house on Otaru's sushi street, open since 1938.
Why now One to do outside while the weather is on your side.
Otaru Canal
Canal lined with restored stone warehouses and gas lamps.
Shakotan Peninsula
Rugged cape with cobalt-blue water and summer sea urchin bowls.
Nearby in September
- Sapporo in September~20 mi · highs 71°F, 5.4 in rain · similar daytime temperatures, about as wet
- Furano and Biei in September~77 mi · highs 69°F, 5.0 in rain · similar daytime temperatures, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~279 m to Otaru's ~47 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Otaru in September: quick answers
Is September a good time to visit Otaru?
Yes. On the climate data it's one of the best months, scoring 75/100. Expect highs of 71°F (22°C) and 5.4 in (137 mm) of rain. Our Hokkaido: Sapporo, Otaru & Furano route recommends Jul – Aug, Jan – Feb, so September is outside its suggested window.
How hot is Otaru in September?
Average highs are 71°F (22°C) and average lows 56°F (13°C), making it the 3rd-warmest month by daytime highs.
Does it rain a lot in Otaru in September?
Yes: about 5.4 in (137 mm) of rain falls across September on average, the 2nd-wettest month of the year. The annual total is about 50.1 in (1272 mm).
What should I pack for Otaru in September?
Bring light, breathable clothes (71°F afternoons), rain jacket and waterproof shoes (5.4 in of rain on average) and comfortable walking shoes (most picks involve some walking).
Planning Otaru in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.