When to go · Mount Aso
Mount Aso, month by month
The best months for Mount Aso: Apr, May, Oct, Nov. Months to avoid: Jan, Feb, Jul, Aug, Sep.
Month by month
- JanuaryAvoidListed as a month to avoid: Jul–Aug (heat and haze), Jan–Feb (ice on trails), typhoon season Sep.8 °C (46 °F) / -2 °C (28 °F), 7 rain days46 °F (8 °C) / 28 °F (-2 °C), 7 rain daysCrowds: Low · 1 festival or holiday
- FebruaryAvoidListed as a month to avoid: Jul–Aug (heat and haze), Jan–Feb (ice on trails), typhoon season Sep.10 °C (50 °F) / -1 °C (30 °F), 8 rain days50 °F (10 °C) / 30 °F (-1 °C), 8 rain daysCrowds: Low
- MarchGoodOutside the best window (Apr–May, Oct–early Nov). Across Japan: Blossom arrives late in the month: prices jump, book early.14 °C (57 °F) / 2 °C (36 °F), 10 rain days57 °F (14 °C) / 36 °F (2 °C), 10 rain daysCrowds: High · 1 festival or holiday
- AprilGreatInside Mount Aso's best window: Apr–May, Oct–early Nov.19 °C (66 °F) / 7 °C (45 °F), 10 rain days66 °F (19 °C) / 45 °F (7 °C), 10 rain daysCrowds: High · 2 festivals or holidays
- MayGreatInside Mount Aso's best window: Apr–May, Oct–early Nov.23 °C (73 °F) / 12 °C (54 °F), 10 rain days73 °F (23 °C) / 54 °F (12 °C), 10 rain daysCrowds: Medium · 1 festival or holiday
- JuneMixedOutside the best window (Apr–May, Oct–early Nov). Across Japan: Rainy season in Honshū: grey, humid, fewer tourists; Hokkaidō is at its best.26 °C (79 °F) / 16 °C (61 °F), 14 rain days79 °F (26 °C) / 61 °F (16 °C), 14 rain daysCrowds: Low
- JulyAvoidListed as a month to avoid: Jul–Aug (heat and haze), Jan–Feb (ice on trails), typhoon season Sep.29 °C (84 °F) / 20 °C (68 °F), 13 rain days84 °F (29 °C) / 68 °F (20 °C), 13 rain daysCrowds: Medium
- AugustAvoidListed as a month to avoid: Jul–Aug (heat and haze), Jan–Feb (ice on trails), typhoon season Sep.30 °C (86 °F) / 21 °C (70 °F), 11 rain days86 °F (30 °C) / 70 °F (21 °C), 11 rain daysCrowds: High · 1 festival or holiday
- SeptemberAvoidListed as a month to avoid: Jul–Aug (heat and haze), Jan–Feb (ice on trails), typhoon season Sep.27 °C (81 °F) / 18 °C (64 °F), 11 rain days81 °F (27 °C) / 64 °F (18 °C), 11 rain daysCrowds: Medium
- OctoberGreatInside Mount Aso's best window: Apr–May, Oct–early Nov.22 °C (72 °F) / 11 °C (52 °F), 8 rain days72 °F (22 °C) / 52 °F (11 °C), 8 rain daysCrowds: Medium
- NovemberGreatInside Mount Aso's best window: Apr–May, Oct–early Nov.16 °C (61 °F) / 5 °C (41 °F), 7 rain days61 °F (16 °C) / 41 °F (5 °C), 7 rain daysCrowds: High
- DecemberGoodOutside the best window (Apr–May, Oct–early Nov). Across Japan: Cold and clear until the New Year shutdown from 29 Dec.11 °C (52 °F) / 0 °C (32 °F), 6 rain days52 °F (11 °C) / 32 °F (0 °C), 6 rain daysCrowds: Medium · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Mount Aso, side by side.
Verdict
Apr: Great
May: Great
Daytime high
Apr: 19 °C (66 °F)66 °F (19 °C)
May: 23 °C (73 °F)73 °F (23 °C)
Night low
Apr: 7 °C (45 °F)45 °F (7 °C)
May: 12 °C (54 °F)54 °F (12 °C)
Rain days
Apr: 10
May: 10
Crowds
Apr: High
May: Medium
Prices
Apr: High
May: Medium
Festivals listed
Apr: 2
May: 1
April: Inside Mount Aso's best window: Apr–May, Oct–early Nov.
May: Inside Mount Aso's best window: Apr–May, Oct–early Nov.
Mount Aso: figures are long-term averages from this guide, not a forecast.