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April in Karatsu averages a daily high of 20.9°C. Expect roughly 9.7 wet days totalling 162.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Karatsu is April–May.
Based on SAGA, JA (36.4km), 1995–2024. 26 years of April data.
See all twelve months for Karatsu →