Weather in Karuizawa for May 2026
In general, the average temperature in Karuizawa at the beginning of May is 14.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 15.3 °C by the end of May.
Karuizawa in May brings notable rainfall, with an average of 20 rainy days and a total precipitation of 208.5 mm.
Is May a good time to visit Karuizawa? check out the best time to travel to Karuizawa page.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
Karuizawa Weather May
Temperatures trend during May in Karuizawa
May weather in Karuizawa day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Moderate rain | 15° /5° | 10.1 mm | 4 | |
| 2 May |  Patchy rain possible | 10° /4° | 6.2 mm | 3 | |
| 3 May |  Sunny | 16° /2° | 0.1 mm | 5 | |
| 4 May | Sunny | 18° /4° | 0.4 mm | 5 | |
| 5 May |  Partly cloudy | 17° /5° | 0 mm | 5 | |
| 6 May |  Cloudy | 11° /6° | 12.1 mm | 3 | |
| 7 May |  Light drizzle | 14° /6° | 4.5 mm | 3 | |
| 8 May | Patchy rain possible | 13° /1° | 0.6 mm | 4 | |
| 9 May |  Light freezing rain | 9° /3° | 6.6 mm | 3 | |
| 10 May | Sunny | 18° /4° | 4.8 mm | 5 | |
| 11 May | Sunny | 19° /6° | 0.2 mm | 5 | |
| 12 May |  Overcast | 17° /6° | 3.7 mm | 4 | |
| 13 May | Moderate rain | 16° /5° | 18.1 mm | 4 | |
| 14 May | Sunny | 18° /5° | 0.2 mm | 5 | |
| 15 May | Patchy rain possible | 18° /7° | 0 mm | 5 | |
| 16 May | Patchy rain possible | 17° /9° | 0.7 mm | 4 | |
| 17 May | Sunny | 15° /6° | 6.9 mm | 5 | |
| 18 May | Sunny | 21° /7° | 0.3 mm | 6 | |
| 19 May | Light rain | 17° /8° | 3.7 mm | 4 | |
| 20 May | Light rain | 20° /7° | 5.3 mm | 5 | |
| 21 May | Partly cloudy | 21° /11° | 1 mm | 6 | |
| 22 May | Patchy rain possible | 17° /10° | 1.4 mm | 4 | |
| 23 May | Overcast | 17° /7° | 0 mm | 4 | |
| 24 May | Patchy rain possible | 16° /7° | 4 mm | 4 | |
| 25 May | Patchy rain possible | 17° /8° | 14.5 mm | 4 | |
| 26 May | Patchy rain possible | 17° /6° | 0 mm | 4 | |
| 27 May | Patchy light drizzle | 16° /8° | 1.9 mm | 4 | |
| 28 May |  Heavy rain | 15° /8° | 64.4 mm | 4 | |
| 29 May |  Fog | 15° /7° | 8.7 mm | 4 | |
| 30 May | Sunny | 15° /6° | 10.8 mm | 4 | |
| 31 May | Light rain shower | 12° /7° | 17 mm | 3 | |
| Next | |||||
Karuizawa weather in May vs April vs June
| April | May | June | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 13°/4° | 16°/6° | 20°/11° |
| Rainfall | 98 mm | 209 mm | 204 mm |
| Snowfall | 6 cm | 0 cm | 0 cm |
| Wind | 11.3 km/h | 11.1 km/h | 9.1 km/h |
| Humidity | 69% | 75% | 80% |
| Rainy days | 15 days | 20 days | 23 days |
| Snow days | 3 days | 0 days | 0 days |
| Dry days | 12 days | 11 days | 7 days |
Planning a trip to Karuizawa? Discover the best time to visit
Karuizawa in May - FAQ
What to pack to Karuizawa in May?
As you prepare for your trip to Karuizawa in May, 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 May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
May rainfall patterns in Karuizawa
UV exposure in Karuizawa during May
Quick links
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.