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Iwamuro

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Iwamuro Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Iwamuro year round climate

  • Spring (March–May): Average 45–62°F, mild climate but with relatively high rainfall, especially in May. Common activities: picnicking, flower viewing. Recommended clothing: light jacket, long-sleeved shirts.
  • Summer (June–August): Average 71–83°F, hot and humid, with relatively high rainfall, especially in July. Common activities: escaping the heat, playing in streams. Recommended clothing: light and breathable clothing, sun hat.
  • Autumn (September–November): Average 53–76°F, pleasant and comfortable climate, but with relatively high rainfall, especially in November. Common activities: viewing autumn leaves, hiking. Recommended clothing: comfortable jacket, long-sleeved shirts.
  • Winter (December–February): Average 37–41°F, cold and dry, with relatively high rainfall, the rainiest month being December. Common activities: soaking in hot springs, indoor activities. Recommended clothing: warm jacket, hat, scarf, gloves.

Iwamuro climatological average

Annual average temperature: approx. 59.0°F / Annual rainfall: approx. 1981 mm / Summer humidity: 70%–80% / Rainiest month: December

Iwamuro monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
37.8°F
150
February
38.5°F
111.3
March
45.5°F
113.7
April
55.4°F
79.3
May
63°F
128.7
June
71.6°F
137.7
July
79.5°F
258
August
83.1°F
108.3
September
76.8°F
202.7
October
62.8°F
147.7
November
53.4°F
217.3
December
41.4°F
326.3

Iwamuro weather for the next seven days

2/17
Tuesday
Patchy rain nearby
42.6°F/34.2°F
2/18
Wednesday
Moderate rain
47.7°F/32.9°F
2/19
Thursday
Patchy rain nearby
38.8°F/31.6°F
2/20
Friday
Sunny
45.4°F/28.5°F
2/21
Saturday
Partly Cloudy
54.8°F/33.5°F
2/22
Sunday
Sunny
61.4°F/37.9°F
2/23
Monday
Patchy rain nearby
47.8°F/40.2°F

Iwamuro Frequently Asked Questions and Useful Information for Travel

What is the best time to visit?

The best time to visit is winter (December to February), when the weather is cooler and suitable for bathing and sightseeing.

What are the must-see attractions?

Must-see attractions include Yahiko Sakurai Onsen, Saito Hiroen, and Taho Onsen, all of which offer rich experiences and beautiful views.