| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -1.4° | — | 31.3mm | 6.1 | 33 |
| February | 0° | — | 31.1mm | 6.1 | 33 |
| March | 5.4° | — | 50.5mm | 7.7 | 38 |
| April | 13° | — | 62.5mm | 9.5 | 59 |
| May | 18.9° | — | 82.7mm | 10.5 | 75 |
| June | 21.8° | — | 88.5mm | 11 | 78 |
| July | 25.2° | — | 103.3mm | 11 | 78 |
| August | 25.6° | — | 146.7mm | 12.5 | 75 |
| September | 22.4° | — | 116.3mm | 10.9 | 78 |
| October | 16.1° | — | 90mm | 9 | 70 |
| November | 8.6° | — | 63.5mm | 9.1 | 45 |
| December | 1.1° | — | 60.1mm | 7.3 | 30 |
January in Obihiro averages a daily high of -1.4°C. Expect roughly 6.1 wet days totalling 31.3mm. A hard month to visit for comfort alone.
February in Obihiro averages a daily high of 0°C. Expect roughly 6.1 wet days totalling 31.1mm. A hard month to visit for comfort alone.
March in Obihiro averages a daily high of 5.4°C. Expect roughly 7.7 wet days totalling 50.5mm. Demanding conditions — pack for it and plan indoor options.
April in Obihiro averages a daily high of 13°C. Expect roughly 9.5 wet days totalling 62.5mm. Generally workable, with some weather to plan around.
May in Obihiro averages a daily high of 18.9°C. Expect roughly 10.5 wet days totalling 82.7mm. Comfortable conditions for being outdoors all day.
June in Obihiro averages a daily high of 21.8°C. Expect roughly 11 wet days totalling 88.5mm. Comfortable conditions for being outdoors all day.
July in Obihiro averages a daily high of 25.2°C. Expect roughly 11 wet days totalling 103.3mm. Comfortable conditions for being outdoors all day.
August in Obihiro averages a daily high of 25.6°C. Expect roughly 12.5 wet days totalling 146.7mm. Comfortable conditions for being outdoors all day.
September in Obihiro averages a daily high of 22.4°C. Expect roughly 10.9 wet days totalling 116.3mm. Comfortable conditions for being outdoors all day.
October in Obihiro averages a daily high of 16.1°C. Expect roughly 9 wet days totalling 90mm. Generally workable, with some weather to plan around.
November in Obihiro averages a daily high of 8.6°C. Expect roughly 9.1 wet days totalling 63.5mm. Demanding conditions — pack for it and plan indoor options.
December in Obihiro averages a daily high of 1.1°C. Expect roughly 7.3 wet days totalling 60.1mm. 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. Obihiro peaks at 78.
Based on 30 years of records, May–October scores highest for comfort in Obihiro, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 25.6°C.
August is the wettest, averaging 146.7mm of rain across roughly 12.5 wet days.
January is the coolest month, with average daily highs around -1.4°C.