| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 10.1° | — | 67.9mm | 11.5 | 45 |
| February | 11.8° | — | 71.8mm | 10.9 | 52 |
| March | 15.1° | — | 103.8mm | 11.2 | 62 |
| April | 19.9° | — | 123.9mm | 10.6 | 78 |
| May | 24.5° | — | 126.4mm | 9.5 | 81 |
| June | 27.3° | — | 230.6mm | 12.5 | 74 |
| July | 31.3° | — | 311.2mm | 13.2 | 56 |
| August | 32.8° | — | 258.7mm | 12.1 | 53 |
| September | 28.7° | — | 183.6mm | 11.3 | 71 |
| October | 23.8° | — | 114.3mm | 8.5 | 83 |
| November | 18.1° | — | 98.9mm | 9.1 | 76 |
| December | 12.8° | — | 72.3mm | 11 | 55 |
January in Kasuga averages a daily high of 10.1°C. Expect roughly 11.5 wet days totalling 67.9mm. Demanding conditions — pack for it and plan indoor options.
February in Kasuga averages a daily high of 11.8°C. Expect roughly 10.9 wet days totalling 71.8mm. Demanding conditions — pack for it and plan indoor options.
March in Kasuga averages a daily high of 15.1°C. Expect roughly 11.2 wet days totalling 103.8mm. Generally workable, with some weather to plan around.
April in Kasuga averages a daily high of 19.9°C. Expect roughly 10.6 wet days totalling 123.9mm. Comfortable conditions for being outdoors all day.
May in Kasuga averages a daily high of 24.5°C. Expect roughly 9.5 wet days totalling 126.4mm. Comfortable conditions for being outdoors all day.
June in Kasuga averages a daily high of 27.3°C. Expect roughly 12.5 wet days totalling 230.6mm. Generally workable, with some weather to plan around.
July in Kasuga averages a daily high of 31.3°C. Expect roughly 13.2 wet days totalling 311.2mm. Generally workable, with some weather to plan around.
August in Kasuga averages a daily high of 32.8°C. Expect roughly 12.1 wet days totalling 258.7mm. Demanding conditions — pack for it and plan indoor options.
September in Kasuga averages a daily high of 28.7°C. Expect roughly 11.3 wet days totalling 183.6mm. Generally workable, with some weather to plan around.
October in Kasuga averages a daily high of 23.8°C. Expect roughly 8.5 wet days totalling 114.3mm. Comfortable conditions for being outdoors all day.
November in Kasuga averages a daily high of 18.1°C. Expect roughly 9.1 wet days totalling 98.9mm. Comfortable conditions for being outdoors all day.
December in Kasuga averages a daily high of 12.8°C. Expect roughly 11 wet days totalling 72.3mm. 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. Kasuga peaks at 83.
Based on 30 years of records, April–May scores highest for comfort in Kasuga, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 32.8°C.
July is the wettest, averaging 311.2mm of rain across roughly 13.2 wet days.
January is the coolest month, with average daily highs around 10.1°C.