When to go · Karuizawa
Karuizawa, month by month
The best months for Karuizawa: May, Jun, Oct, Nov. Months to avoid: Jan, Feb, Jul, Aug.
Month by month
- JanuaryAvoidListed as a month to avoid: Jul–Aug weekends (crowded, wet), Jan–Feb (cold, icy roads).0 °C (32 °F) / -8 °C (18 °F), 8 rain days32 °F (0 °C) / 18 °F (-8 °C), 8 rain daysCrowds: Low · 1 festival or holiday
- FebruaryAvoidListed as a month to avoid: Jul–Aug weekends (crowded, wet), Jan–Feb (cold, icy roads).1 °C (34 °F) / -7 °C (19 °F), 8 rain days34 °F (1 °C) / 19 °F (-7 °C), 8 rain daysCrowds: Low
- MarchGoodOutside the best window (May–Jun, Oct–Nov). Across Japan: Blossom arrives late in the month: prices jump, book early.5 °C (41 °F) / -4 °C (25 °F), 10 rain days41 °F (5 °C) / 25 °F (-4 °C), 10 rain daysCrowds: High · 1 festival or holiday
- AprilMixedOutside the best window (May–Jun, Oct–Nov). Across Japan: Blossom peak early April and Golden Week at the end: the two most crowded windows of the year.12 °C (54 °F) / 2 °C (36 °F), 10 rain days54 °F (12 °C) / 36 °F (2 °C), 10 rain daysCrowds: High · 2 festivals or holidays
- MayGreatInside Karuizawa's best window: May–Jun, Oct–Nov.17 °C (63 °F) / 8 °C (46 °F), 11 rain days63 °F (17 °C) / 46 °F (8 °C), 11 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Karuizawa's best window: May–Jun, Oct–Nov.20 °C (68 °F) / 12 °C (54 °F), 14 rain days68 °F (20 °C) / 54 °F (12 °C), 14 rain daysCrowds: Low
- JulyAvoidListed as a month to avoid: Jul–Aug weekends (crowded, wet), Jan–Feb (cold, icy roads).24 °C (75 °F) / 17 °C (63 °F), 15 rain days75 °F (24 °C) / 63 °F (17 °C), 15 rain daysCrowds: Medium
- AugustAvoidListed as a month to avoid: Jul–Aug weekends (crowded, wet), Jan–Feb (cold, icy roads).25 °C (77 °F) / 17 °C (63 °F), 13 rain days77 °F (25 °C) / 63 °F (17 °C), 13 rain daysCrowds: High · 1 festival or holiday
- SeptemberMixedOutside the best window (May–Jun, Oct–Nov). Across Japan: Still hot; typhoon peak can cancel flights and ferries for a day or two.21 °C (70 °F) / 14 °C (57 °F), 13 rain days70 °F (21 °C) / 57 °F (14 °C), 13 rain daysCrowds: Medium
- OctoberGreatInside Karuizawa's best window: May–Jun, Oct–Nov.15 °C (59 °F) / 8 °C (46 °F), 11 rain days59 °F (15 °C) / 46 °F (8 °C), 11 rain daysCrowds: Medium
- NovemberGreatInside Karuizawa's best window: May–Jun, Oct–Nov.9 °C (48 °F) / 1 °C (34 °F), 8 rain days48 °F (9 °C) / 34 °F (1 °C), 8 rain daysCrowds: High
- DecemberGoodOutside the best window (May–Jun, Oct–Nov). Across Japan: Cold and clear until the New Year shutdown from 29 Dec.3 °C (37 °F) / -5 °C (23 °F), 7 rain days37 °F (3 °C) / 23 °F (-5 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Karuizawa, side by side.
Verdict
May: Great
Jun: Great
Daytime high
May: 17 °C (63 °F)63 °F (17 °C)
Jun: 20 °C (68 °F)68 °F (20 °C)
Night low
May: 8 °C (46 °F)46 °F (8 °C)
Jun: 12 °C (54 °F)54 °F (12 °C)
Rain days
May: 11 (better)
Jun: 14
Crowds
May: Medium
Jun: Low
Prices
May: Medium
Jun: Medium
Festivals listed
May: 1
Jun: 0
May: Inside Karuizawa's best window: May–Jun, Oct–Nov.
June: Inside Karuizawa's best window: May–Jun, Oct–Nov.
Karuizawa: figures are long-term averages from this guide, not a forecast.