Hakodate Weather in September
With daytime temperatures of 22°C (72°F) and nighttime lows of 18°C (64°F), September in Hakodate brings high temperatures during the day. Do keep in mind that September is part of the rainy season, with frequent and often heavy rainfall.
Rainfall in Hakodate in September
Hakodate is in the rainy season in September, with rain on around 18 days and an average of 195 mm (7.7 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.
Temperature in Hakodate in September
September in Hakodate brings typical temperatures with highs around 22°C (72°F) and lows of 18°C (64°F). September is typically considered a summer month. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Hakodate in September
The month experiences a moderate amount of sunlight, with 160 hours of sunshine. This provides a nice balance between sunshine and rain.For Hakodate itself, July generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Hakodate's climate page.
Hakodate Temperature in September
Min Temperature
18°C (64°F)
Max Temperature
22°C (72°F)
Chance of Rain
59%
Precipitation
195 mm (7.7 in)
Rainy days
18 days
Humidity
76%
Sunshine
160 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Hakodate typically drop from around 24°C (75°F) at the start of September to approximately 20°C (68°F) by the end. Nights are pleasant, with lows typically ranging from 12°C (54°F) to 18°C (64°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Hakodate in September
Browse day-by-day weather records for Hakodate spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hakodate historical weather extremes in September
Our historical data for Hakodate spans 1976 to 2025, revealing these weather extremes.
- On September 18, 2012, temperatures climbed to 32°C (90°F), marking the warmest September day on record.
- On September 27, 2008, Hakodate saw its coldest September day with temperatures maxing out at 13°C (55°F).
- Hakodate registered its coldest September night on September 22, 2001, with temperatures dropping to 4°C (39°F).
Best Places in Japan in September
Find out more about the weather in Japan and which places have the best travel conditions in this month. See all of Japan in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Hakodate in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Hakodate in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Japan, check out our Hakodate's climate page.
Temperature Rainfall Sunshine Humidity
See the full Hakodate climate overview or explore weather in Japan.
