| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 8.9° | 2.5° | 81.1mm | 12.4 | 40 |
| February | 11.7° | 5° | 91.2mm | 13.6 | 46 |
| March | 16.7° | 9.1° | 143.1mm | 16.8 | 59 |
| April | 22.8° | 14.6° | 187.1mm | 15.5 | 70 |
| May | 27.3° | 19.1° | 201.7mm | 14.9 | 69 |
| June | 30.4° | 23.1° | 253.9mm | 14.3 | 58 |
| July | 34° | 26.2° | 155.4mm | 9.2 | 54 |
| August | 33.1° | 25.3° | 103.5mm | 9.3 | 57 |
| September | 29.3° | 21.2° | 78.7mm | 7 | 77 |
| October | 23.7° | 15.6° | 63mm | 9.2 | 82 |
| November | 18.2° | 10° | 78.7mm | 8.8 | 77 |
| December | 11.7° | 4.2° | 47.9mm | 9.2 | 55 |
January in Changsha averages a daily high of 8.9°C with nights around 2.5°C. Expect roughly 12.4 wet days totalling 81.1mm. Demanding conditions — pack for it and plan indoor options.
February in Changsha averages a daily high of 11.7°C with nights around 5°C. Expect roughly 13.6 wet days totalling 91.2mm. Demanding conditions — pack for it and plan indoor options.
March in Changsha averages a daily high of 16.7°C with nights around 9.1°C. Expect roughly 16.8 wet days totalling 143.1mm. Generally workable, with some weather to plan around.
April in Changsha averages a daily high of 22.8°C with nights around 14.6°C. Expect roughly 15.5 wet days totalling 187.1mm. Generally workable, with some weather to plan around.
May in Changsha averages a daily high of 27.3°C with nights around 19.1°C. Expect roughly 14.9 wet days totalling 201.7mm. Generally workable, with some weather to plan around.
June in Changsha averages a daily high of 30.4°C with nights around 23.1°C. Expect roughly 14.3 wet days totalling 253.9mm. Generally workable, with some weather to plan around.
July in Changsha averages a daily high of 34°C with nights around 26.2°C. Expect roughly 9.2 wet days totalling 155.4mm. Demanding conditions — pack for it and plan indoor options.
August in Changsha averages a daily high of 33.1°C with nights around 25.3°C. Expect roughly 9.3 wet days totalling 103.5mm. Generally workable, with some weather to plan around.
September in Changsha averages a daily high of 29.3°C with nights around 21.2°C. Expect roughly 7 wet days totalling 78.7mm. Comfortable conditions for being outdoors all day.
October in Changsha averages a daily high of 23.7°C with nights around 15.6°C. Expect roughly 9.2 wet days totalling 63mm. Comfortable conditions for being outdoors all day.
November in Changsha averages a daily high of 18.2°C with nights around 10°C. Expect roughly 8.8 wet days totalling 78.7mm. Comfortable conditions for being outdoors all day.
December in Changsha averages a daily high of 11.7°C with nights around 4.2°C. Expect roughly 9.2 wet days totalling 47.9mm. 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. Changsha peaks at 82.
Based on 30 years of records, September–November scores highest for comfort in Changsha, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 34°C.
June is the wettest, averaging 253.9mm of rain across roughly 14.3 wet days.
January is the coolest month, with average daily highs around 8.9°C.