When to go · Seosan
Seosan, month by month
The best months for Seosan: Apr, May, Sep, Oct. Months to avoid: Jan, Feb, Jul, Aug.
Month by month
- JanuaryAvoidListed as a month to avoid: Jul–Aug (monsoon rain and heat), Jan–Feb (cold, ice on trails).3.3 °C (38 °F) / -6.2 °C (21 °F), 8 rain days38 °F (3.3 °C) / 21 °F (-6.2 °C), 8 rain daysCrowds: Low · 1 festival or holiday
- FebruaryAvoidListed as a month to avoid: Jul–Aug (monsoon rain and heat), Jan–Feb (cold, ice on trails).5.6 °C (42 °F) / -4.9 °C (23 °F), 7 rain days42 °F (5.6 °C) / 23 °F (-4.9 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- MarchMixedOutside the best window (Apr–May, Sep–Oct). Across South Korea: Cold start, fine dust peaks; cherry blossom reaches Jeju and Busan late in the month.10.8 °C (51 °F) / -0.7 °C (31 °F), 8 rain days51 °F (10.8 °C) / 31 °F (-0.7 °C), 8 rain daysCrowds: Medium
- AprilGreatInside Seosan's best window: Apr–May, Sep–Oct.17.3 °C (63 °F) / 5 °C (41 °F), 8 rain days63 °F (17.3 °C) / 41 °F (5 °C), 8 rain daysCrowds: High
- MayGreatInside Seosan's best window: Apr–May, Sep–Oct.22.5 °C (73 °F) / 11.4 °C (53 °F), 9 rain days73 °F (22.5 °C) / 53 °F (11.4 °C), 9 rain daysCrowds: High
- JuneGoodOutside the best window (Apr–May, Sep–Oct). Across South Korea: Warm and green until the monsoon arrives late in the month.26.4 °C (80 °F) / 17 °C (63 °F), 10 rain days80 °F (26.4 °C) / 63 °F (17 °C), 10 rain daysCrowds: Medium
- JulyAvoidListed as a month to avoid: Jul–Aug (monsoon rain and heat), Jan–Feb (cold, ice on trails).28.5 °C (83 °F) / 21.5 °C (71 °F), 15 rain days83 °F (28.5 °C) / 71 °F (21.5 °C), 15 rain daysCrowds: High
- AugustAvoidListed as a month to avoid: Jul–Aug (monsoon rain and heat), Jan–Feb (cold, ice on trails).29.7 °C (85 °F) / 21.7 °C (71 °F), 14 rain days85 °F (29.7 °C) / 71 °F (21.7 °C), 14 rain daysCrowds: High
- SeptemberGreatInside Seosan's best window: Apr–May, Sep–Oct.26.1 °C (79 °F) / 16.1 °C (61 °F), 9 rain days79 °F (26.1 °C) / 61 °F (16.1 °C), 9 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Seosan's best window: Apr–May, Sep–Oct.20.5 °C (69 °F) / 8.6 °C (47 °F), 7 rain days69 °F (20.5 °C) / 47 °F (8.6 °C), 7 rain daysCrowds: High · 1 festival or holiday
- NovemberGoodOutside the best window (Apr–May, Sep–Oct). Across South Korea: Colour moves south to Seoul's palaces early in the month; cold arrives by the end.13 °C (55 °F) / 2.2 °C (36 °F), 8 rain days55 °F (13 °C) / 36 °F (2.2 °C), 8 rain daysCrowds: Medium
- DecemberGoodOutside the best window (Apr–May, Sep–Oct). Across South Korea: Cold and dry; Christmas markets and lights in Seoul; ski season opens.5.7 °C (42 °F) / -3.7 °C (25 °F), 8 rain days42 °F (5.7 °C) / 25 °F (-3.7 °C), 8 rain daysCrowds: Medium
Compare two months
Weather, crowds and prices for any two months in Seosan, side by side.
Verdict
Apr: Great
May: Great
Daytime high
Apr: 17.3 °C (63 °F)63 °F (17.3 °C)
May: 22.5 °C (73 °F)73 °F (22.5 °C)
Night low
Apr: 5 °C (41 °F)41 °F (5 °C)
May: 11.4 °C (53 °F)53 °F (11.4 °C)
Rain days
Apr: 8 (better)
May: 9
Crowds
Apr: High
May: High
Prices
Apr: High
May: High
Festivals listed
Apr: 0
May: 0
April: Inside Seosan's best window: Apr–May, Sep–Oct.
May: Inside Seosan's best window: Apr–May, Sep–Oct.
Seosan: figures are long-term averages from this guide, not a forecast.