| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 8.8° | — | 27.2mm | 3.2 | 58 |
| February | 9.9° | — | 38.1mm | 6.3 | 55 |
| March | 14.1° | — | 87.7mm | 9.2 | 63 |
| April | 19.2° | — | 130mm | 12.2 | 73 |
| May | 23.8° | — | 142.3mm | 11.6 | 77 |
| June | 26.5° | — | 178.6mm | 14.6 | 71 |
| July | 30.2° | — | 210.2mm | 16.3 | 57 |
| August | 31.3° | — | 184mm | 13.2 | 56 |
| September | 27.3° | — | 216mm | 12.9 | 73 |
| October | 21.7° | — | 193.8mm | 10.5 | 79 |
| November | 16.3° | — | 72.1mm | 7.4 | 73 |
| December | 11° | — | 48.4mm | 5.1 | 61 |
January in Shimotsuke averages a daily high of 8.8°C. Expect roughly 3.2 wet days totalling 27.2mm. Generally workable, with some weather to plan around.
February in Shimotsuke averages a daily high of 9.9°C. Expect roughly 6.3 wet days totalling 38.1mm. Generally workable, with some weather to plan around.
March in Shimotsuke averages a daily high of 14.1°C. Expect roughly 9.2 wet days totalling 87.7mm. Generally workable, with some weather to plan around.
April in Shimotsuke averages a daily high of 19.2°C. Expect roughly 12.2 wet days totalling 130mm. Generally workable, with some weather to plan around.
May in Shimotsuke averages a daily high of 23.8°C. Expect roughly 11.6 wet days totalling 142.3mm. Comfortable conditions for being outdoors all day.
June in Shimotsuke averages a daily high of 26.5°C. Expect roughly 14.6 wet days totalling 178.6mm. Generally workable, with some weather to plan around.
July in Shimotsuke averages a daily high of 30.2°C. Expect roughly 16.3 wet days totalling 210.2mm. Generally workable, with some weather to plan around.
August in Shimotsuke averages a daily high of 31.3°C. Expect roughly 13.2 wet days totalling 184mm. Generally workable, with some weather to plan around.
September in Shimotsuke averages a daily high of 27.3°C. Expect roughly 12.9 wet days totalling 216mm. Generally workable, with some weather to plan around.
October in Shimotsuke averages a daily high of 21.7°C. Expect roughly 10.5 wet days totalling 193.8mm. Comfortable conditions for being outdoors all day.
November in Shimotsuke averages a daily high of 16.3°C. Expect roughly 7.4 wet days totalling 72.1mm. Generally workable, with some weather to plan around.
December in Shimotsuke averages a daily high of 11°C. Expect roughly 5.1 wet days totalling 48.4mm. 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. Shimotsuke peaks at 79.
Based on 30 years of records, April–June scores highest for comfort in Shimotsuke, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 31.3°C.
September is the wettest, averaging 216mm of rain across roughly 12.9 wet days.
January is the coolest month, with average daily highs around 8.8°C.