City Average Daytime High Average Nighttime Low Rainy/Snowy Days Early Month Late Month Sunny Days Early Month Late Month Sapporo 16 C (62 F) 7 C (45 F) 35% 40% 60% 50% Tokyo 22 C (72 F) 15 C (59 F) 35% 30% 40% 55% Takayama 20 C (68 F) 9 C (48 F) 35% 30% 45% 55% Osaka 23 C (73 F) 15 C (59 F) 30% 25% 55% 65% Fukuoka 23 C (73 F) 15 C (59 F)