| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 5.6° | — | 34.9mm | 6.7 | 41 |
| February | 6.6° | — | 36.7mm | 8 | 41 |
| March | 10° | — | 74.1mm | 8.9 | 50 |
| April | 16° | — | 101.9mm | 9.4 | 68 |
| May | 20.8° | — | 112mm | 10.2 | 80 |
| June | 23.4° | — | 139.4mm | 11.9 | 76 |
| July | 27.4° | — | 179.8mm | 16.6 | 68 |
| August | 28.6° | — | 142.1mm | 13 | 68 |
| September | 25.1° | — | 175.7mm | 12.9 | 74 |
| October | 20° | — | 145.6mm | 9.7 | 81 |
| November | 14° | — | 61.9mm | 7.2 | 66 |
| December | 8.5° | — | 52.1mm | 8.1 | 47 |
January in Natori-shi averages a daily high of 5.6°C. Expect roughly 6.7 wet days totalling 34.9mm. Demanding conditions — pack for it and plan indoor options.
February in Natori-shi averages a daily high of 6.6°C. Expect roughly 8 wet days totalling 36.7mm. Demanding conditions — pack for it and plan indoor options.
March in Natori-shi averages a daily high of 10°C. Expect roughly 8.9 wet days totalling 74.1mm. Demanding conditions — pack for it and plan indoor options.
April in Natori-shi averages a daily high of 16°C. Expect roughly 9.4 wet days totalling 101.9mm. Generally workable, with some weather to plan around.
May in Natori-shi averages a daily high of 20.8°C. Expect roughly 10.2 wet days totalling 112mm. Comfortable conditions for being outdoors all day.
June in Natori-shi averages a daily high of 23.4°C. Expect roughly 11.9 wet days totalling 139.4mm. Comfortable conditions for being outdoors all day.
July in Natori-shi averages a daily high of 27.4°C. Expect roughly 16.6 wet days totalling 179.8mm. Generally workable, with some weather to plan around.
August in Natori-shi averages a daily high of 28.6°C. Expect roughly 13 wet days totalling 142.1mm. Generally workable, with some weather to plan around.
September in Natori-shi averages a daily high of 25.1°C. Expect roughly 12.9 wet days totalling 175.7mm. Generally workable, with some weather to plan around.
October in Natori-shi averages a daily high of 20°C. Expect roughly 9.7 wet days totalling 145.6mm. Comfortable conditions for being outdoors all day.
November in Natori-shi averages a daily high of 14°C. Expect roughly 7.2 wet days totalling 61.9mm. Generally workable, with some weather to plan around.
December in Natori-shi averages a daily high of 8.5°C. Expect roughly 8.1 wet days totalling 52.1mm. 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. Natori-shi peaks at 81.
Based on 30 years of records, May–June scores highest for comfort in Natori-shi, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 28.6°C.
July is the wettest, averaging 179.8mm of rain across roughly 16.6 wet days.
January is the coolest month, with average daily highs around 5.6°C.