| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 19.9° | 12.3° | 34.6mm | 5.1 | 89 |
| February | 20.4° | 13.4° | 44mm | 6.3 | 87 |
| March | 22.6° | 16.1° | 54.3mm | 7.8 | 84 |
| April | 25.6° | 19.8° | 158.6mm | 10.2 | 80 |
| May | 28.5° | 23.1° | 256.7mm | 12.8 | 68 |
| June | 30.1° | 25.3° | 428.9mm | 17.6 | 58 |
| July | 31.5° | 26.2° | 283.9mm | 15.7 | 52 |
| August | 31.4° | 25.8° | 358.5mm | 14.3 | 54 |
| September | 31.4° | 24.9° | 206.6mm | 10 | 62 |
| October | 29.2° | 22.2° | 53.1mm | 3.4 | 84 |
| November | 25.8° | 18.3° | 32.6mm | 3.3 | 93 |
| December | 21.6° | 13.7° | 21.5mm | 3.9 | 92 |
January in Jieshi averages a daily high of 19.9°C with nights around 12.3°C. Expect roughly 5.1 wet days totalling 34.6mm. Comfortable conditions for being outdoors all day.
February in Jieshi averages a daily high of 20.4°C with nights around 13.4°C. Expect roughly 6.3 wet days totalling 44mm. Comfortable conditions for being outdoors all day.
March in Jieshi averages a daily high of 22.6°C with nights around 16.1°C. Expect roughly 7.8 wet days totalling 54.3mm. Comfortable conditions for being outdoors all day.
April in Jieshi averages a daily high of 25.6°C with nights around 19.8°C. Expect roughly 10.2 wet days totalling 158.6mm. Comfortable conditions for being outdoors all day.
May in Jieshi averages a daily high of 28.5°C with nights around 23.1°C. Expect roughly 12.8 wet days totalling 256.7mm. Generally workable, with some weather to plan around.
June in Jieshi averages a daily high of 30.1°C with nights around 25.3°C. Expect roughly 17.6 wet days totalling 428.9mm. Generally workable, with some weather to plan around.
July in Jieshi averages a daily high of 31.5°C with nights around 26.2°C. Expect roughly 15.7 wet days totalling 283.9mm. Demanding conditions — pack for it and plan indoor options.
August in Jieshi averages a daily high of 31.4°C with nights around 25.8°C. Expect roughly 14.3 wet days totalling 358.5mm. Demanding conditions — pack for it and plan indoor options.
September in Jieshi averages a daily high of 31.4°C with nights around 24.9°C. Expect roughly 10 wet days totalling 206.6mm. Generally workable, with some weather to plan around.
October in Jieshi averages a daily high of 29.2°C with nights around 22.2°C. Expect roughly 3.4 wet days totalling 53.1mm. Comfortable conditions for being outdoors all day.
November in Jieshi averages a daily high of 25.8°C with nights around 18.3°C. Expect roughly 3.3 wet days totalling 32.6mm. Comfortable conditions for being outdoors all day.
December in Jieshi averages a daily high of 21.6°C with nights around 13.7°C. Expect roughly 3.9 wet days totalling 21.5mm. Comfortable conditions for being outdoors all day.
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. Jieshi peaks at 93.
Based on 30 years of records, November–February scores highest for comfort in Jieshi, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 31.5°C.
June is the wettest, averaging 428.9mm of rain across roughly 17.6 wet days.
January is the coolest month, with average daily highs around 19.9°C.