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Hiraiso

Travel Info

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Hiraiso Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Hiraiso year round climate

  • Spring (March–May): Average 48–64°F, climate transitions from cold to warm, rainfall gradually increases. March is relatively humid and cold, while May becomes warm and comfortable. Common activities: Spring outings, flower viewing. Recommended clothing: Spring jacket, comfortable trousers or skirt, adjust clothing according to weather changes.
  • Summer (June–August): Average 71–81°F, hot and humid, more rainfall, with the most rainfall in June. Common activities: Beach activities, sightseeing at summer resorts. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 54–76°F, temperature gradually decreases, more rainfall, but the weather is comfortable and pleasant. September has more rainfall. Common activities: Maple leaf viewing, hiking. Recommended clothing: Comfortable long-sleeved clothing, light jacket.
  • Winter (December–February): Average 39–42°F, cold and dry, less rainfall. Common activities: Skiing, hot spring experience (if available nearby). Recommended clothing: Warm jacket, hat, scarf, gloves.

Hiraiso climatological average

Annual average temperature: approx. 60.3°F / Annual rainfall: approx. 1421 mm / Summer humidity: 70%–80% / Rainiest month: June

Hiraiso monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
39°F
32.3
February
41°F
53
March
48.4°F
109.3
April
58.5°F
105.7
May
64.6°F
160.3
June
71.8°F
225
July
80.4°F
130.7
August
81.7°F
155.7
September
76.6°F
209.7
October
63.5°F
128.7
November
54.3°F
88.3
December
42.8°F
22.8

Hiraiso weather for the next seven days

1/11
Sunday
Sunny
53.6°F/36.9°F
1/12
Monday
Sunny
44.6°F/34.3°F
1/13
Tuesday
Sunny
56.9°F/36.8°F
1/14
Wednesday
Sunny
44.2°F/37.6°F
1/15
Thursday
Partly Cloudy
47.5°F/35°F
1/16
Friday
Sunny
54.1°F/40.4°F
1/17
Saturday
Sunny
47.5°F/37.3°F

Hiraiso Frequently Asked Questions and Useful Information for Travel

What is the best time to visit?

The best times to visit are spring and autumn, when the weather is mild and suitable for a variety of outdoor activities.

What are the must-see attractions?

Must-see attractions include Oarai Isosaki Shrine, Kamiiso Torii, Fukasaku Farm, etc.