If you're looking for summer vibes, the best time to travel to Shizuoka is in August, July and September, when the average temperature reaches 25.95 °C, while January, May and March are the 3 sunniest months of the year, with an average of 65.4 hours.
If you prefer colder temperatures, however, make sure you visit Shizuoka during the months of January, February and December to experience an average of 8.08 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during June, December and January, when the average precipitation in Shizuoka is 10.5 mm, while the months of January, February and March are drier, with an average of 0 mm.