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Arima Onsen

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Arima Onsen Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Arima Onsen year round climate

  • Spring (March–May): Average 9.6–18.1°C, mild climate but with relatively high rainfall, especially in April. Common activities: Flower viewing, onsen bathing. Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): Average 22.2–28.0°C, hot and humid, with the most rainfall in June. Common activities: Onsen bathing, outdoor swimming (if facilities available), sightseeing. Recommended clothing: Light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): Average 17.7–25.3°C, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: Hiking, autumn leaf viewing (if maple leaves are present). Recommended clothing: Light jacket, long-sleeved shirt.
  • Winter (December–February): Average 4.0–7.4°C, cold and dry with less rainfall. Common activities: Onsen bathing, enjoying onsen ryokan facilities. Recommended clothing: Warm jacket, sweater, scarf, hat.

Arima Onsen climatological average

Annual average temperature: approx. 16°C / Annual rainfall: approx. 1709 mm / Summer humidity: 70%–80% / Rainiest month: June

Arima Onsen monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
4°C
33.2
February
5°C
67.9
March
9.6°C
153.9
April
14.9°C
166.1
May
18.1°C
190.6
June
22.2°C
275.3
July
27.5°C
145.3
August
28°C
227.3
September
25.3°C
188.7
October
17.7°C
132.8
November
12.8°C
96.8
December
7.4°C
31.1

Arima Onsen weather for the next seven days

9/22
Tuesday
Overcast
29.6°C/24.1°C
9/23
Wednesday
Patchy rain nearby
23.7°C/21.2°C
9/24
Thursday
Patchy rain nearby
29.3°C/20.7°C
9/25
Friday
Overcast
27.4°C/22.4°C
9/26
Saturday
Light rain shower
22.8°C/18.6°C
9/27
Sunday
Light rain shower
18.6°C/17.7°C
9/28
Monday
Light rain shower
24.7°C/18.6°C

Arima Onsen Frequently Asked Questions and Useful Information for Travel

Is Arima Onsen worth visiting?

Arima Onsen is absolutely worth visiting. It is a historic hot spring resort, renowned as one of the oldest in Japan. The charming hot spring town features a tasteful narrow slope perfect for enjoyable strolls, offering a unique and picturesque experience.

How much does Arima Onsen cost for a day trip?

Visitors can enjoy hot spring bathing at two public bath houses or at the many ryokan that offer day-trip access. The admission fee for a day visit to a bath typically ranges between 550 and 3000 yen, providing an affordable way to experience the therapeutic waters.

Do you wear underwear in onsen?

No, you do not wear underwear in the onsen. Once in the changing area, you will need to undress completely. No clothes, underwear, or swimwear are permitted in the bathing area. You can leave your belongings in the designated baskets or lockers. A small modesty towel is provided and can be used to cover yourself if desired.

Why is Arima Onsen famous?

Arima Onsen is famous for its easy access from major Kansai metropolitan areas like Osaka and Kobe, attracting many Japanese visitors. It was historically recognized, being named in The Pillow Book as one of the three famous springs in Japan and was later selected as the most prestigious hot spring during the Edo period.

What are the main types of onsen water in Arima Onsen?

Arima Onsen is particularly famous for its two distinct types of hot spring water: Kinsen (golden water) and Ginsen (silver water). Kinsen is a clear, slightly metallic-tasting water rich in iron, which is said to be beneficial for skin conditions and muscle pain. Ginsen is a clear, odorless water believed to aid in recovery from fatigue and promote overall well-being.