| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 6.4° | — | 236.4mm | 23.2 | 26 |
| February | 7.5° | — | 178mm | 19.3 | 30 |
| March | 12.2° | — | 153.8mm | 16.7 | 45 |
| April | 17.9° | — | 143.6mm | 13.5 | 66 |
| May | 23.2° | — | 134mm | 11.2 | 78 |
| June | 26.1° | — | 153.6mm | 11.7 | 77 |
| July | 30.4° | — | 266.2mm | 15.4 | 56 |
| August | 31.8° | — | 200.6mm | 11.4 | 58 |
| September | 27.2° | — | 227.8mm | 13.6 | 72 |
| October | 21.7° | — | 180.4mm | 13.3 | 73 |
| November | 15.9° | — | 215.2mm | 18 | 57 |
| December | 9.5° | — | 299.3mm | 23.5 | 36 |
January in Toyama averages a daily high of 6.4°C. Expect roughly 23.2 wet days totalling 236.4mm. A hard month to visit for comfort alone.
February in Toyama averages a daily high of 7.5°C. Expect roughly 19.3 wet days totalling 178mm. A hard month to visit for comfort alone.
March in Toyama averages a daily high of 12.2°C. Expect roughly 16.7 wet days totalling 153.8mm. Demanding conditions — pack for it and plan indoor options.
April in Toyama averages a daily high of 17.9°C. Expect roughly 13.5 wet days totalling 143.6mm. Generally workable, with some weather to plan around.
May in Toyama averages a daily high of 23.2°C. Expect roughly 11.2 wet days totalling 134mm. Comfortable conditions for being outdoors all day.
June in Toyama averages a daily high of 26.1°C. Expect roughly 11.7 wet days totalling 153.6mm. Comfortable conditions for being outdoors all day.
July in Toyama averages a daily high of 30.4°C. Expect roughly 15.4 wet days totalling 266.2mm. Generally workable, with some weather to plan around.
August in Toyama averages a daily high of 31.8°C. Expect roughly 11.4 wet days totalling 200.6mm. Generally workable, with some weather to plan around.
September in Toyama averages a daily high of 27.2°C. Expect roughly 13.6 wet days totalling 227.8mm. Generally workable, with some weather to plan around.
October in Toyama averages a daily high of 21.7°C. Expect roughly 13.3 wet days totalling 180.4mm. Generally workable, with some weather to plan around.
November in Toyama averages a daily high of 15.9°C. Expect roughly 18 wet days totalling 215.2mm. Generally workable, with some weather to plan around.
December in Toyama averages a daily high of 9.5°C. Expect roughly 23.5 wet days totalling 299.3mm. 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. Toyama peaks at 78.
Based on 30 years of records, May–June scores highest for comfort in Toyama, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 31.8°C.
December is the wettest, averaging 299.3mm of rain across roughly 23.5 wet days.
January is the coolest month, with average daily highs around 6.4°C.