Kurokawa Onsen

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Kurokawa Onsen Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Kurokawa Onsen year round climate

Spring (March–May): Average 9.6–18.1°C, mild climate but with relatively high rainfall, especially in April and May. Common activities: Sightseeing, flower viewing. Recommended clothing: Light jacket, comfortable long-sleeved clothing, raincoat essential.
Summer (June–August): Average 22.9–27.6°C, hot and humid with abundant rainfall. July is the rainiest month. Common activities: Summer resort, playing in the stream. Recommended clothing: Breathable and sweat-wicking clothing, sun hat, raincoat.
Autumn (September–November): Average 17.8–25.2°C, pleasant and comfortable climate with gradually decreasing rainfall. Common activities: Maple viewing, hiking. Recommended clothing: Light jacket, long-sleeved shirt.
Winter (December–February): Average 3.9–6.2°C, cold and dry with less rainfall. Common activities: Hot spring bathing, enjoying winter scenery. Recommended clothing: Warm coat, beanie, scarf, gloves.

Kurokawa Onsen climatological average

Annual average temperature: approx. 15.9°C / Annual rainfall: approx. 2138 mm / Summer humidity: 70%–80% / Rainiest month: July

Kurokawa Onsen monthly average temperature and precipitation

Month

Air temperature (°C)

Precipitation (mm)

January

3.9°C

38.6

February

5.1°C

88.4

March

9.6°C

137.3

April

15°C

177.6

May

18.1°C

222.7

June

22.9°C

326.9

July

26.7°C

336.8

August

27.6°C

306.2

September

25.2°C

201.1

October

17.8°C

147.6

November

13°C

123.1

December

6.2°C

32.3

Kurokawa Onsen weather for the next seven days

5/1

Friday

Heavy rain

17.8°C/13.1°C

5/2

Saturday

Patchy rain nearby

23.4°C/12.7°C

5/3

Sunday

Moderate rain

23.4°C/14.9°C

5/4

Monday

Heavy rain

18.3°C/15.1°C

5/5

Tuesday

Patchy rain nearby

22.6°C/13.4°C

5/6

Wednesday

Partly Cloudy

23.8°C/15.2°C

5/7

Thursday

Partly Cloudy

23.8°C/16.1°C

Kurokawa Onsen Frequently Asked Questions and Useful Information for Travel

Is Kurokawa Onsen worth visiting?

Kurokawa Onsen is highly worth visiting for its picturesque townscape and exceptional outdoor baths (rotenburo). Many ryokans feature these baths alongside gushing rivers or boast impressive, large-scale designs, offering a truly immersive onsen experience.

What are the top onsen towns in Japan?

While Japan boasts many renowned onsen towns, Kurokawa Onsen in Kumamoto is consistently ranked among the top choices for its authentic atmosphere and beautiful natural settings. Other notable mentions include Yufuin Onsen, Arima Onsen, Noboribetsu Onsen, and Kinosaki Onsen.

Are there mixed gender baths available in Kurokawa Onsen?

Yes, a few ryokans in Kurokawa Onsen still offer mixed-gender baths (konyoku), which can be a wonderful option for couples wishing to bathe together. Women typically have the option to purchase or rent modesty towels for use in these baths, though swimsuits are not permitted.

Do you wear clothes in an onsen in Kurokawa Onsen?

In traditional onsen in Kurokawa Onsen, you do not wear clothes or swimsuits. Guests are expected to bathe nude to maintain water cleanliness and respect the communal bathing custom. A small towel is provided for modesty when walking to and from the bath, and can be used to rest on your head while soaking, but it must not touch the bathwater.

What is the etiquette for bathing in Kurokawa Onsen?

Before entering the onsen in Kurokawa Onsen, thoroughly shower and clean your body and hair. Public and traditional onsens require complete nudity. Use the small towel provided for modesty when moving to the bath and place it on your head while soaking, ensuring it does not go into the water.