| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 20.7° | — | 135mm | 14.4 | 71 |
| February | 21.4° | — | 113.3mm | 12.8 | 74 |
| March | 22.9° | — | 127mm | 11.9 | 76 |
| April | 25.1° | — | 149.2mm | 11.1 | 78 |
| May | 27.7° | — | 247.8mm | 12.2 | 73 |
| June | 30.1° | — | 196mm | 12.1 | 63 |
| July | 31.6° | — | 164.3mm | 11.2 | 59 |
| August | 31.2° | — | 291.3mm | 14.9 | 53 |
| September | 30.1° | — | 224.1mm | 13.3 | 61 |
| October | 28° | — | 137mm | 11.8 | 72 |
| November | 25.3° | — | 168.8mm | 13 | 74 |
| December | 22.1° | — | 144.7mm | 13.9 | 72 |
January in Miyakojima averages a daily high of 20.7°C. Expect roughly 14.4 wet days totalling 135mm. Generally workable, with some weather to plan around.
February in Miyakojima averages a daily high of 21.4°C. Expect roughly 12.8 wet days totalling 113.3mm. Generally workable, with some weather to plan around.
March in Miyakojima averages a daily high of 22.9°C. Expect roughly 11.9 wet days totalling 127mm. Comfortable conditions for being outdoors all day.
April in Miyakojima averages a daily high of 25.1°C. Expect roughly 11.1 wet days totalling 149.2mm. Comfortable conditions for being outdoors all day.
May in Miyakojima averages a daily high of 27.7°C. Expect roughly 12.2 wet days totalling 247.8mm. Generally workable, with some weather to plan around.
June in Miyakojima averages a daily high of 30.1°C. Expect roughly 12.1 wet days totalling 196mm. Generally workable, with some weather to plan around.
July in Miyakojima averages a daily high of 31.6°C. Expect roughly 11.2 wet days totalling 164.3mm. Generally workable, with some weather to plan around.
August in Miyakojima averages a daily high of 31.2°C. Expect roughly 14.9 wet days totalling 291.3mm. Demanding conditions — pack for it and plan indoor options.
September in Miyakojima averages a daily high of 30.1°C. Expect roughly 13.3 wet days totalling 224.1mm. Generally workable, with some weather to plan around.
October in Miyakojima averages a daily high of 28°C. Expect roughly 11.8 wet days totalling 137mm. Generally workable, with some weather to plan around.
November in Miyakojima averages a daily high of 25.3°C. Expect roughly 13 wet days totalling 168.8mm. Generally workable, with some weather to plan around.
December in Miyakojima averages a daily high of 22.1°C. Expect roughly 13.9 wet days totalling 144.7mm. 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. Miyakojima peaks at 78.
Based on 30 years of records, October–May scores highest for comfort in Miyakojima, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 31.6°C.
August is the wettest, averaging 291.3mm of rain across roughly 14.9 wet days.
January is the coolest month, with average daily highs around 20.7°C.