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January in Oyama averages a daily high of 8.8°C. Expect roughly 3.2 wet days totalling 27.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Oyama is April–June.
Based on UTSUNOMIYA, JA (28.4km), 1995–2024. 27 years of January data.
See all twelve months for Oyama →