| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 9.3° | — | 52mm | 5.1 | 56 |
| February | 10.3° | — | 72.8mm | 6.7 | 56 |
| March | 14.1° | — | 135mm | 9.2 | 63 |
| April | 19.1° | — | 162.3mm | 9.9 | 77 |
| May | 23.4° | — | 168.9mm | 10.1 | 80 |
| June | 26.4° | — | 183.2mm | 12.4 | 75 |
| July | 30.4° | — | 168.8mm | 11.1 | 64 |
| August | 32° | — | 140mm | 8 | 64 |
| September | 28.3° | — | 247.8mm | 12.7 | 69 |
| October | 23° | — | 226.5mm | 10.2 | 80 |
| November | 17.4° | — | 103.3mm | 7.8 | 76 |
| December | 11.9° | — | 68.6mm | 6.5 | 61 |
January in Gamagōri averages a daily high of 9.3°C. Expect roughly 5.1 wet days totalling 52mm. Generally workable, with some weather to plan around.
February in Gamagōri averages a daily high of 10.3°C. Expect roughly 6.7 wet days totalling 72.8mm. Generally workable, with some weather to plan around.
March in Gamagōri averages a daily high of 14.1°C. Expect roughly 9.2 wet days totalling 135mm. Generally workable, with some weather to plan around.
April in Gamagōri averages a daily high of 19.1°C. Expect roughly 9.9 wet days totalling 162.3mm. Comfortable conditions for being outdoors all day.
May in Gamagōri averages a daily high of 23.4°C. Expect roughly 10.1 wet days totalling 168.9mm. Comfortable conditions for being outdoors all day.
June in Gamagōri averages a daily high of 26.4°C. Expect roughly 12.4 wet days totalling 183.2mm. Comfortable conditions for being outdoors all day.
July in Gamagōri averages a daily high of 30.4°C. Expect roughly 11.1 wet days totalling 168.8mm. Generally workable, with some weather to plan around.
August in Gamagōri averages a daily high of 32°C. Expect roughly 8 wet days totalling 140mm. Generally workable, with some weather to plan around.
September in Gamagōri averages a daily high of 28.3°C. Expect roughly 12.7 wet days totalling 247.8mm. Generally workable, with some weather to plan around.
October in Gamagōri averages a daily high of 23°C. Expect roughly 10.2 wet days totalling 226.5mm. Comfortable conditions for being outdoors all day.
November in Gamagōri averages a daily high of 17.4°C. Expect roughly 7.8 wet days totalling 103.3mm. Comfortable conditions for being outdoors all day.
December in Gamagōri averages a daily high of 11.9°C. Expect roughly 6.5 wet days totalling 68.6mm. 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. Gamagōri peaks at 80.
Based on 30 years of records, April–June scores highest for comfort in Gamagōri, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 32°C.
September is the wettest, averaging 247.8mm of rain across roughly 12.7 wet days.
January is the coolest month, with average daily highs around 9.3°C.