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Weather in Karuizawa for October 2026

Your guide to Karuizawa weather in October - trends and predictions

    Temperatures

  • So far, October 2026 in Karuizawa is slightly warmer than the historical average by 1.1 °C.

  • The forecast for the upcoming days in Karuizawa predicts a temperature of 13.2 °C, which is slightly above the historical average.

  • In general, the average temperature in Karuizawa at the beginning of October is 18.2 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.2 °C by the end of October.

    • Rain 🌧️

  • The climate of Karuizawa in October is notably wet, with an average of 12 rainy days, and a total of 115.2 mm of precipitation.

    • More

  • Is October a good time to visit Karuizawa? check out the best time to travel to Karuizawa page.

  • ✨ Is October a good time to visit Karuizawa? – Ask the AI Weatherman

Average dry days
19
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
16°/8°
Temperatures
Average wind speed
9 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Karuizawa Weather October

Move between months or click on a day
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light rain
19°
2
Patchy rain possible
19°
3
Light rain
17°
4
Light rain
17°
5
Fog
19°
6
Patchy rain possible
19°
7
Light rain
17°
8
Moderate rain
18°
9
Light rain
16°
10
Patchy rain possible
18°
11
Patchy rain possible
19°
12
Patchy rain possible
21°
13
Patchy rain possible
19°
14
Light rain
16°
15
Patchy rain possible
19°
16
Light rain
18°
17
Patchy rain possible
18°
18
Fog
18°
19
Light rain
20°
20
Patchy rain possible
17°
21
Patchy rain possible
17°
22
Partly cloudy
13°
23
Patchy rain possible
16°
24
Light rain
14°
25
Light rain
16°
26
Light rain
16°
27
Patchy rain possible
18°
28
Patchy rain possible
9°
29
Sunny
12°
30
Moderate rain
12°
31
Patchy rain possible
15°

Temperatures trend during October in Karuizawa

See the weather trend as well as the moving average line

October weather in Karuizawa day by day

Click on a date for more information
September November
Date Weather Temperatures Rain UV More
1 Oct. Light rain
Light rain
 19° /11° 4.3 mm 4
2 Oct. Patchy rain possible
Patchy rain possible
 19° /9° 0 mm 5
3 Oct. Light rain
Light rain
 17° /10° 2 mm 4
4 Oct. Light rain
Light rain
 17° /12° 5.3 mm 3
5 Oct. Fog
Fog
 19° /13° 0.6 mm 3
6 Oct. Patchy rain possible
Patchy rain possible
 19° /12° 1.4 mm 4
7 Oct. Light rain
Light rain
 17° /9° 2.5 mm 4
8 Oct. Moderate rain
Moderate rain
 18° /8° 16.4 mm 4
9 Oct. Light rain
Light rain
 16° /8° 7.1 mm 4
10 Oct. Patchy rain possible
Patchy rain possible
 18° /9° 0.2 mm 4
11 Oct. Patchy rain possible
Patchy rain possible
 19° /10° 0.4 mm 4
12 Oct. Patchy rain possible
Patchy rain possible
 21° /10° 0.5 mm 4
13 Oct. Patchy rain possible
Patchy rain possible
 19° /9° 0.2 mm 4
14 Oct. Light rain
Light rain
 16° /9° 7.3 mm 3
15 Oct. Patchy rain possible
Patchy rain possible
 19° /8° 0.1 mm 4
16 Oct. Light rain
Light rain
 18° /9° 4.9 mm 3
17 Oct. Patchy rain possible
Patchy rain possible
 18° /9° 0.2 mm 4
18 Oct. Fog
Fog
 18° /8° 0.4 mm 4
19 Oct. Light rain
Light rain
 20° /10° 3.4 mm 3
20 Oct. Patchy rain possible
Patchy rain possible
 17° /9° 2.4 mm 3
21 Oct. Patchy rain possible
Patchy rain possible
 17° /8° 1.6 mm 3
22 Oct. Partly cloudy
Partly cloudy
 13° /5° 0.4 mm 3
23 Oct. Patchy rain possible
Patchy rain possible
 16° /6° 0.3 mm 3
24 Oct. Light rain
Light rain
 14° /7° 5.8 mm 3
25 Oct. Light rain
Light rain
 16° /7° 7.5 mm 3
26 Oct. Light rain
Light rain
 16° /7° 6.1 mm 4
27 Oct. Patchy rain possible
Patchy rain possible
 18° /10° 0.8 mm 2.8
28 Oct. Patchy rain possible
Patchy rain possible
 9° /1° 0.6 mm 5
29 Oct. Sunny
Sunny
 12° /0° 0 mm 4.7
30 Oct. Moderate rain
Moderate rain
 12° /6° 14.3 mm 1
31 Oct. Patchy rain possible
Patchy rain possible
 15° /5° 0.3 mm 3
Next
Important Notice
Our weather forecast for Karuizawa in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Karuizawa forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Karuizawa weather in October vs September vs November

Compare October weather in Karuizawa with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
SeptemberOctoberNovember
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures21°/14°16°/8°10°/1°
Rainfall220 mm115 mm39 mm
Snowfall0 cm0 cm1 cm
Wind8.6 km/h8.9 km/h10.4 km/h
Humidity88%83%75%
Rainy days21 days12 days8 days
Snow days0 days0 days2 days
Dry days9 days19 days20 days

Planning a trip to Karuizawa? Discover the best time to visit

Karuizawa in October - FAQ

What are the expected maximum and minimum temperatures in Karuizawa during October?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Karuizawa during October?
Significant rainfall exceeding 115.2 mm is expected in Karuizawa during October, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Karuizawa during October?
The average wind speed in Karuizawa during October is 9 km/h, suggesting breezy to windy conditions, depending on your activities.

October rainfall patterns in Karuizawa

Explore the daily rainfall trends and prepare for Karuizawas October weather 💧
Typically, Karuizawa has 12 rainy days in October with a total of 115.2 mm of rainfall.

UV exposure in Karuizawa during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️

What to pack to Karuizawa in October?

🌦️ Mild & changeable · highs around 16 °C, frequent showers

As you prepare for your trip to Karuizawa in October, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Karuizawa, during October, is comfortable and enjoyable, regardless of the weather conditions.

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🧥 Clothing

👟 Footwear

🎒 Accessories

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Location coordinates Where is Karuizawa?

Get accurate weather forecasts for Karuizawa, located at latitude 36.35 and longitude 138.633. Stay updated with localized weather information tailored for Karuizawa.

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