Hakodate Bay Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Hakodate Bay year round climate
Spring (March–May): Average 3.4–13.7°C, mild climate, but early spring can still be chilly with occasional rain. Common activities: Cherry blossom viewing (depending on blooming conditions), Hakodate Mountain night view. Recommended clothing: Mid-layer warm clothing, jacket, comfortable walking shoes.
Summer (June–August): Average 17.9–24.5°C, warm and humid, with the most rainfall in August, so be mindful of rain. Common activities: Beach activities, outdoor activities, seafood tasting. Recommended clothing: Light and breathable clothing, rain gear, sunscreen.
Autumn (September–November): Average 7.1–20.8°C, comfortable and pleasant climate, but with a large temperature difference between day and night. Common activities: Autumn leaves viewing (depending on foliage conditions), Hakodate morning market experience. Recommended clothing: Layering, allowing for easy adjustment to temperature changes.
Winter (December–February): Average -2.0–-0.7°C, cold and dry, with relatively little snowfall. Common activities: Skiing (requires traveling to nearby areas), enjoying snow scenes, experiencing onsen (hot springs). Recommended clothing: Warm coat, hat, scarf, gloves, waterproof and warm boots.
Hakodate Bay climatological average
Annual average temperature: approx. 10.8°C / Annual rainfall: approx. 1172 mm / Summer humidity: 70%–80% / Rainiest month: August
Hakodate Bay monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-2°C
94
February
-1.3°C
36
March
3.4°C
64.7
April
9.6°C
44.3
May
13.7°C
72
June
17.9°C
129.3
July
22.7°C
93.7
August
24.5°C
245
September
20.8°C
94.3
October
13.7°C
116.7
November
7.1°C
99.7
December
-0.7°C
83
Hakodate Bay weather for the next seven days
12/8
Monday
Moderate rain
4.6°C/1.5°C
12/9
Tuesday
Moderate or heavy snow showers
1.7°C/-0.5°C
12/10
Wednesday
Moderate or heavy snow showers
2.4°C/-1.4°C
12/11
Thursday
Patchy moderate snow
0.2°C/-1.7°C
12/12
Friday
Moderate or heavy snow showers
-3.3°C/-5.2°C
12/13
Saturday
Light snow showers
1.6°C/-4.8°C
12/14
Sunday
Moderate rain
5.7°C/0.6°C
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