Spring (March–May): Average 10.1–18.1°C, mild climate, but with relatively high rainfall, especially in April and May. Common activities: Flower viewing (e.g., cherry blossoms, depending on blooming conditions), hiking. Recommended clothing: Light jacket, long-sleeved shirt, raincoat is essential.
Summer (June–August): Average 22.0–27.5°C, hot and humid, with the most rainfall in June, relatively less in July and August. Common activities: Beach activities, mountain climbing (beware of high temperatures). Recommended clothing: Light and breathable clothing, sun hat, sunglasses.
Autumn (September–November): Average 13.3–25.0°C, comfortable climate, but with relatively high rainfall in September. Common activities: Maple leaf viewing (depending on leaf color change), outdoor excursions. Recommended clothing: Long-sleeved shirt, light jacket, pay attention to warmth due to large temperature difference between morning and evening.
Winter (December–February): Average 4.3–6.7°C, cold and dry, with low rainfall. Common activities: Skiing (depending on snowfall), hot spring trips. Recommended clothing: Thick coat, warm clothing, scarf, gloves.
Yachimata climatological average
Annual average temperature: approx. 16°C / Annual rainfall: approx. 1441 mm / Summer humidity: 70%–80% / Rainiest month: June
Yachimata monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
4.3°C
41
February
5.6°C
65.2
March
10.1°C
120.4
April
15.2°C
158.3
May
18.1°C
174.4
June
22°C
216.1
July
27°C
108.4
August
27.5°C
98.8
September
25°C
204.1
October
18.2°C
131.2
November
13.3°C
93.1
December
6.7°C
30.3
Yachimata weather for the next seven days
12/29
Monday
Sunny
12.6°C/7.2°C
12/30
Tuesday
Sunny
13.3°C/6.7°C
12/31
Wednesday
Partly Cloudy
11.9°C/6.9°C
1/1
Thursday
Patchy rain nearby
6.5°C/4.8°C
1/2
Friday
Patchy rain nearby
5.5°C/3.4°C
1/3
Saturday
Partly Cloudy
7.8°C/2.5°C
1/4
Sunday
Sunny
11.8°C/3.5°C
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