| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 12.2° | — | 59.3mm | 6.6 | 62 |
| February | 13.9° | — | 135.3mm | 10.4 | 60 |
| March | 17.4° | — | 170.1mm | 11.3 | 69 |
| April | 21.8° | — | 174mm | 11.1 | 78 |
| May | 25.7° | — | 248.8mm | 11.8 | 76 |
| June | 27.5° | — | 620.4mm | 17.8 | 68 |
| July | 31.6° | — | 456.1mm | 15.8 | 52 |
| August | 32.3° | — | 310.5mm | 15.3 | 49 |
| September | 29.6° | — | 336.9mm | 14.4 | 61 |
| October | 25° | — | 132.6mm | 8.6 | 83 |
| November | 19.6° | — | 115.4mm | 9.3 | 80 |
| December | 14° | — | 69.8mm | 7.1 | 67 |
January in Miyakonojō averages a daily high of 12.2°C. Expect roughly 6.6 wet days totalling 59.3mm. Generally workable, with some weather to plan around.
February in Miyakonojō averages a daily high of 13.9°C. Expect roughly 10.4 wet days totalling 135.3mm. Generally workable, with some weather to plan around.
March in Miyakonojō averages a daily high of 17.4°C. Expect roughly 11.3 wet days totalling 170.1mm. Generally workable, with some weather to plan around.
April in Miyakonojō averages a daily high of 21.8°C. Expect roughly 11.1 wet days totalling 174mm. Comfortable conditions for being outdoors all day.
May in Miyakonojō averages a daily high of 25.7°C. Expect roughly 11.8 wet days totalling 248.8mm. Comfortable conditions for being outdoors all day.
June in Miyakonojō averages a daily high of 27.5°C. Expect roughly 17.8 wet days totalling 620.4mm. Generally workable, with some weather to plan around.
July in Miyakonojō averages a daily high of 31.6°C. Expect roughly 15.8 wet days totalling 456.1mm. Demanding conditions — pack for it and plan indoor options.
August in Miyakonojō averages a daily high of 32.3°C. Expect roughly 15.3 wet days totalling 310.5mm. Demanding conditions — pack for it and plan indoor options.
September in Miyakonojō averages a daily high of 29.6°C. Expect roughly 14.4 wet days totalling 336.9mm. Generally workable, with some weather to plan around.
October in Miyakonojō averages a daily high of 25°C. Expect roughly 8.6 wet days totalling 132.6mm. Comfortable conditions for being outdoors all day.
November in Miyakonojō averages a daily high of 19.6°C. Expect roughly 9.3 wet days totalling 115.4mm. Comfortable conditions for being outdoors all day.
December in Miyakonojō averages a daily high of 14°C. Expect roughly 7.1 wet days totalling 69.8mm. Generally workable, with some weather to plan around.
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. Miyakonojō peaks at 83.
Based on 30 years of records, April–May scores highest for comfort in Miyakonojō, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 32.3°C.
June is the wettest, averaging 620.4mm of rain across roughly 17.8 wet days.
January is the coolest month, with average daily highs around 12.2°C.