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Best Time for Shikoku Four-Prefecture Road Loop

Last updated: 2026-09-21

Sweet spot: January, February, November. Computed from NASA POWER climate normals across the route's overnight towns, balancing temperature, rainfall and daylight.

💡 Good to know

Use the published road season and check current roads, weather, public access and every optional activity separately.

Month	Low	High	Rain	Daylight
January	1.7°C	8.0°C	60 mm	10.0 h	❄
February	2.3°C	9.5°C	82 mm	10.8 h	❄
March	4.6°C	12.9°C	113 mm	11.7 h
April	9.1°C	17.8°C	132 mm	12.9 h
May	13.9°C	22.1°C	165 mm	13.8 h
June	18.4°C	25.1°C	242 mm	14.2 h
July	22.6°C	28.5°C	255 mm	14.1 h
August	23.5°C	29.6°C	179 mm	13.3 h
September	20.3°C	26.5°C	223 mm	12.2 h
October	14.8°C	21.5°C	158 mm	11.1 h
November	9.3°C	16.1°C	86 mm	10.2 h
December	3.9°C	10.4°C	76 mm	9.8 h	❄

Plan it for your month →