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Shima Onsen

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Shima Onsen Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Shima Onsen year round climate

  • Spring (March–May): 6.7–15.9°C on average, mild climate, but rainfall increases gradually; be aware of temperature differences between morning and evening. Common activities: flower viewing, spring outings. Suggested clothing: light jacket, long-sleeved shirt, comfortable shoes.
  • Summer (June–August): 20.4–25.2°C on average, warm and humid climate, more rainfall. Common activities: hot spring bathing, summer resort. Suggested clothing: breathable clothing, rain gear.
  • Autumn (September–November): 15.0–22.2°C on average, pleasant and comfortable climate, less rainfall. Common activities: viewing autumn leaves, hiking. Suggested clothing: light jacket, long-sleeved shirt.
  • Winter (December–February): 0.9–3.5°C on average, cold and dry climate, little rainfall. Common activities: skiing, hot spring therapy. Suggested clothing: warm clothing, thick jacket, hat, gloves, scarf.

Shima Onsen climatological average

Annual average temperature: approx. 12.9°C / Annual rainfall: approx. 1306 mm / Summer humidity: 70%–80% / Rainiest month: June

Shima Onsen monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
0.9°C
23.6
February
2.1°C
45.3
March
6.7°C
93.5
April
12.5°C
112.1
May
15.9°C
163.8
June
20.4°C
182.5
July
25.2°C
174.2
August
25°C
174.9
September
22.2°C
169.6
October
15°C
78
November
9.6°C
57.6
December
3.5°C
31.3

Shima Onsen weather for the next seven days

8/4
Tuesday
Sunny
25.4°C/12.9°C
8/5
Wednesday
Patchy rain nearby
26.9°C/12.2°C
8/6
Thursday
Patchy rain nearby
28.8°C/18.1°C
8/7
Friday
Patchy rain nearby
26.7°C/14.7°C
8/8
Saturday
Patchy rain nearby
29.3°C/16.5°C
8/9
Sunday
Patchy rain nearby
27.6°C/17°C
8/10
Monday
Patchy rain nearby
26.7°C/17.2°C

Shima Onsen Frequently Asked Questions and Useful Information for Travel

Is Shima Onsen worth visiting?

Shima Onsen is definitely worth visiting. Its appeal lies not only in its incredibly soothing hot springs but also in the picturesque atmosphere of the town. You'll find numerous beautiful sights to explore, making it a truly dreamy getaway destination.

Do you wear undies in Japanese onsen?

No, you do not wear underwear in an onsen. Once you are in the changing area, you must undress completely. No clothes, underwear, or swimwear are permitted in the bathing area. You can leave your belongings in the designated baskets or lockers. If you prefer, you can take a small modesty towel to cover yourself.

Does Shima Onsen allow tattoos?

Yes, Shima Onsen is welcoming to visitors with tattoos. While some traditional onsens in Japan may still have restrictions, Shima Onsen offers an increasing number of tattoo-friendly hot springs. These options include public bathhouses, private onsens, and ryokan that do not require any cover-ups for body art.

What are the top onsen experiences in Shima Onsen?

The top onsen experiences in Shima Onsen revolve around its naturally heated mineral waters, known for their therapeutic properties. Visitors can enjoy a variety of public bathhouses and private onsen facilities, each offering a unique way to relax and rejuvenate amidst the serene natural surroundings. Exploring the different types of waters and their benefits is a highlight of any visit.

What sights can I see in Shima Onsen?

Beyond its famous hot springs, Shima Onsen offers a charming town atmosphere with several notable sights. You can explore the picturesque streets, visit local temples, and enjoy the natural beauty of the surrounding Gunma Prefecture. The area provides a tranquil escape with opportunities for scenic walks and cultural immersion.