| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 9.9° | — | 57.8mm | 9.1 | 49 |
| February | 11.8° | — | 88.8mm | 11.1 | 52 |
| March | 16.2° | — | 120.4mm | 11 | 66 |
| April | 21.6° | — | 125.8mm | 10 | 80 |
| May | 26.5° | — | 137.3mm | 9.3 | 81 |
| June | 28.9° | — | 336.9mm | 13.8 | 65 |
| July | 32.5° | — | 384.2mm | 14 | 50 |
| August | 33.6° | — | 247.9mm | 12.1 | 49 |
| September | 29.6° | — | 187.3mm | 11.1 | 67 |
| October | 24.4° | — | 98.4mm | 7.8 | 84 |
| November | 18.2° | — | 75.8mm | 8.8 | 77 |
| December | 11.8° | — | 63.9mm | 10.8 | 52 |
January in Nakatsu averages a daily high of 9.9°C. Expect roughly 9.1 wet days totalling 57.8mm. Demanding conditions — pack for it and plan indoor options.
February in Nakatsu averages a daily high of 11.8°C. Expect roughly 11.1 wet days totalling 88.8mm. Demanding conditions — pack for it and plan indoor options.
March in Nakatsu averages a daily high of 16.2°C. Expect roughly 11 wet days totalling 120.4mm. Generally workable, with some weather to plan around.
April in Nakatsu averages a daily high of 21.6°C. Expect roughly 10 wet days totalling 125.8mm. Comfortable conditions for being outdoors all day.
May in Nakatsu averages a daily high of 26.5°C. Expect roughly 9.3 wet days totalling 137.3mm. Comfortable conditions for being outdoors all day.
June in Nakatsu averages a daily high of 28.9°C. Expect roughly 13.8 wet days totalling 336.9mm. Generally workable, with some weather to plan around.
July in Nakatsu averages a daily high of 32.5°C. Expect roughly 14 wet days totalling 384.2mm. Demanding conditions — pack for it and plan indoor options.
August in Nakatsu averages a daily high of 33.6°C. Expect roughly 12.1 wet days totalling 247.9mm. Demanding conditions — pack for it and plan indoor options.
September in Nakatsu averages a daily high of 29.6°C. Expect roughly 11.1 wet days totalling 187.3mm. Generally workable, with some weather to plan around.
October in Nakatsu averages a daily high of 24.4°C. Expect roughly 7.8 wet days totalling 98.4mm. Comfortable conditions for being outdoors all day.
November in Nakatsu averages a daily high of 18.2°C. Expect roughly 8.8 wet days totalling 75.8mm. Comfortable conditions for being outdoors all day.
December in Nakatsu averages a daily high of 11.8°C. Expect roughly 10.8 wet days totalling 63.9mm. Demanding conditions — pack for it and plan indoor options.
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. Nakatsu peaks at 84.
Based on 30 years of records, April–May scores highest for comfort in Nakatsu, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 33.6°C.
July is the wettest, averaging 384.2mm of rain across roughly 14 wet days.
January is the coolest month, with average daily highs around 9.9°C.