Weekly weather forecast: Sunny through Oct 17, rain arrives Oct 19

Oct 15-17 (Thu-Sat): Sunny skies, rising temperatures

Tokyo, Osaka, Fukuoka and Sapporo see mostly sunny weather from Thursday Oct 15 through Saturday Oct 17. A cold front extends across Tokyo, Osaka and Sapporo on Oct 15, while high pressure stays nearly stationary over Fukuoka; all four cities stay sunny, with highs of 22C in Tokyo, 24C in Osaka and Fukuoka, and 16C in Sapporo. By Oct 16, Tokyo and Osaka reach 25C, Fukuoka turns partly cloudy at 25C, and Sapporo warms to 16C. On Oct 17, Fukuoka's ridge moves to the northwest; Fukuoka climbs to 27C, Osaka reaches 26C, Tokyo 24C and Sapporo 15C, with rain chances staying low.

Oct 18-19 (Sun-Mon): Fronts bring rain to all four cities

A warm front extends across Fukuoka and Osaka on Sunday Oct 18, with Fukuoka reaching 29C and Osaka 26C under partly cloudy skies, while high pressure moves away to the east of Tokyo and Sapporo, which stay at 24C and 16C respectively. On Monday Oct 19, a cold front extends across Tokyo, Osaka and Fukuoka, while a warm front extends over Sapporo; all four cities turn cloudy with rain, and precipitation chances rise to 60% in Fukuoka, Osaka and Sapporo, and 40% in Tokyo. Fukuoka reaches 25C with 84% humidity, Osaka 27C with 81% humidity, Sapporo 20C with 89% humidity, and Tokyo reaches 26C with 71% humidity.

Oct 20-21 (Tue-Wed): Clouds dominate, temperatures ease

Cloudy conditions dominate Tokyo, Osaka, Fukuoka and Sapporo on Tuesday Oct 20 and Wednesday Oct 21, with temperatures easing slightly from earlier in the week. Tokyo stays cloudy at 24C on Oct 20 and 25C on Oct 21, with rain chances near 40% both days. Osaka remains cloudy at 27C on Oct 20 and 26C on Oct 21, also with 40% rain chances. Fukuoka is cloudy at 27C on Oct 20, with rain chances easing to 30% as skies turn partly sunny at 25C on Oct 21. Sapporo cools to 17C on Oct 20 with occasional sun, then drops to 15C on Oct 21 under cloudy skies, with rain chances near 30-40%.