Spring (March–May): Average 10.5–19.3°C, mild and comfortable climate, but with relatively high rainfall; be prepared for rain. Common activities: flower viewing, picnicking, seaside walks. Recommended clothing: light jacket, long-sleeved shirt, rain gear.
Summer (June–August): Average 23.7–29.5°C, hot and humid, with relatively high rainfall; be prepared for heat and sun protection. Common activities: swimming, surfing, water sports. Recommended clothing: light and breathable clothing, sun hat, sunglasses.
Autumn (September–November): Average 19.1–13.9°C, comfortable and pleasant climate, with gradually decreasing rainfall. Common activities: mountain climbing, hiking, viewing autumn leaves. Recommended clothing: light jacket, long-sleeved shirt.
Winter (December–February): Average 7.2–6.1°C, cold and dry, with the least rainfall. Common activities: hot springs, indoor activities. Recommended clothing: warm jacket, sweater, scarf, gloves.
Hayama climatological average
Annual average temperature: approx. 17.2°C / Annual rainfall: approx. 1656 mm / Summer humidity: 70%–80% / Rainiest month: August
Hayama monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
5.1°C
47.4
February
6.1°C
72.5
March
10.5°C
131.3
April
16.4°C
182.2
May
19.3°C
199.8
June
23.7°C
248.8
July
28.9°C
176
August
29.5°C
254.7
September
27.1°C
127.3
October
19.1°C
105.2
November
13.9°C
91.9
December
7.2°C
19.2
Hayama weather for the next seven days
12/13
Saturday
Patchy rain nearby
8.9°C/1°C
12/14
Sunday
Moderate rain
8.8°C/5.7°C
12/15
Monday
Patchy rain nearby
5.8°C/3.7°C
12/16
Tuesday
Sunny
10.9°C/1.8°C
12/17
Wednesday
Partly Cloudy
12.3°C/5.6°C
12/18
Thursday
Sunny
11.8°C/4.2°C
12/19
Friday
Sunny
13.8°C/4.2°C
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