| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -0.6° | — | 109.1mm | 21.4 | 15 |
| February | 0.4° | — | 94.6mm | 19 | 15 |
| March | 4.7° | — | 74.7mm | 16.9 | 21 |
| April | 12° | — | 53.3mm | 11.5 | 51 |
| May | 18.4° | — | 55.8mm | 10.5 | 74 |
| June | 21.7° | — | 69.8mm | 10 | 80 |
| July | 25.5° | — | 93.9mm | 9.4 | 81 |
| August | 26.4° | — | 131.8mm | 10.6 | 79 |
| September | 23° | — | 119.1mm | 11.1 | 78 |
| October | 16.4° | — | 110.4mm | 13.3 | 62 |
| November | 8.6° | — | 116.8mm | 16.9 | 34 |
| December | 1.6° | — | 109.7mm | 19.6 | 15 |
January in Ebetsu averages a daily high of -0.6°C. Expect roughly 21.4 wet days totalling 109.1mm. A hard month to visit for comfort alone.
February in Ebetsu averages a daily high of 0.4°C. Expect roughly 19 wet days totalling 94.6mm. A hard month to visit for comfort alone.
March in Ebetsu averages a daily high of 4.7°C. Expect roughly 16.9 wet days totalling 74.7mm. A hard month to visit for comfort alone.
April in Ebetsu averages a daily high of 12°C. Expect roughly 11.5 wet days totalling 53.3mm. Demanding conditions — pack for it and plan indoor options.
May in Ebetsu averages a daily high of 18.4°C. Expect roughly 10.5 wet days totalling 55.8mm. Generally workable, with some weather to plan around.
June in Ebetsu averages a daily high of 21.7°C. Expect roughly 10 wet days totalling 69.8mm. Comfortable conditions for being outdoors all day.
July in Ebetsu averages a daily high of 25.5°C. Expect roughly 9.4 wet days totalling 93.9mm. Comfortable conditions for being outdoors all day.
August in Ebetsu averages a daily high of 26.4°C. Expect roughly 10.6 wet days totalling 131.8mm. Comfortable conditions for being outdoors all day.
September in Ebetsu averages a daily high of 23°C. Expect roughly 11.1 wet days totalling 119.1mm. Comfortable conditions for being outdoors all day.
October in Ebetsu averages a daily high of 16.4°C. Expect roughly 13.3 wet days totalling 110.4mm. Generally workable, with some weather to plan around.
November in Ebetsu averages a daily high of 8.6°C. Expect roughly 16.9 wet days totalling 116.8mm. A hard month to visit for comfort alone.
December in Ebetsu averages a daily high of 1.6°C. Expect roughly 19.6 wet days totalling 109.7mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Ebetsu peaks at 81.
Based on 30 years of records, May–September scores highest for comfort in Ebetsu, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 26.4°C.
August is the wettest, averaging 131.8mm of rain across roughly 10.6 wet days.
January is the coolest month, with average daily highs around -0.6°C.