If you're looking for summer vibes, the best time to travel to Wakkanai is in July, August and September, when the average temperature reaches 16.55 °C, while May, April and June are the 3 sunniest months of the year, with an average of 24.68 hours.
If you prefer colder temperatures, however, make sure you visit Wakkanai during the months of January, February and December to experience an average of 0.01 °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 January, February and November, when the average precipitation in Wakkanai is 2.48 mm, while the months of January, February and March are drier, with an average of 0 mm.