| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 8.9° | -0.1° | 1.6mm | 1.4 | 59 |
| February | 12.2° | 3.2° | 2.6mm | 1.9 | 71 |
| March | 17.6° | 7.1° | 15.9mm | 6.2 | 80 |
| April | 23° | 11.7° | 36.3mm | 8.2 | 84 |
| May | 27.1° | 15.6° | 60.3mm | 11.4 | 77 |
| June | 30° | 18.9° | 58.2mm | 10.1 | 68 |
| July | 31.9° | 21.3° | 90.5mm | 10.4 | 60 |
| August | 30.8° | 20.7° | 83.8mm | 10.6 | 64 |
| September | 25.8° | 17.1° | 67.7mm | 11.6 | 77 |
| October | 20.3° | 12.1° | 44.2mm | 11.2 | 78 |
| November | 15.3° | 6.3° | 8.2mm | 3.4 | 78 |
| December | 9.8° | 0.7° | 0.6mm | 0.7 | 64 |
January in Longnan averages a daily high of 8.9°C with nights around -0.1°C. Rain is rare — about 1.4 wet days and 1.6mm across the month. Generally workable, with some weather to plan around.
February in Longnan averages a daily high of 12.2°C with nights around 3.2°C. Rain is rare — about 1.9 wet days and 2.6mm across the month. Generally workable, with some weather to plan around.
March in Longnan averages a daily high of 17.6°C with nights around 7.1°C. Expect roughly 6.2 wet days totalling 15.9mm. Comfortable conditions for being outdoors all day.
April in Longnan averages a daily high of 23°C with nights around 11.7°C. Expect roughly 8.2 wet days totalling 36.3mm. Comfortable conditions for being outdoors all day.
May in Longnan averages a daily high of 27.1°C with nights around 15.6°C. Expect roughly 11.4 wet days totalling 60.3mm. Comfortable conditions for being outdoors all day.
June in Longnan averages a daily high of 30°C with nights around 18.9°C. Expect roughly 10.1 wet days totalling 58.2mm. Generally workable, with some weather to plan around.
July in Longnan averages a daily high of 31.9°C with nights around 21.3°C. Expect roughly 10.4 wet days totalling 90.5mm. Generally workable, with some weather to plan around.
August in Longnan averages a daily high of 30.8°C with nights around 20.7°C. Expect roughly 10.6 wet days totalling 83.8mm. Generally workable, with some weather to plan around.
September in Longnan averages a daily high of 25.8°C with nights around 17.1°C. Expect roughly 11.6 wet days totalling 67.7mm. Comfortable conditions for being outdoors all day.
October in Longnan averages a daily high of 20.3°C with nights around 12.1°C. Expect roughly 11.2 wet days totalling 44.2mm. Comfortable conditions for being outdoors all day.
November in Longnan averages a daily high of 15.3°C with nights around 6.3°C. Expect roughly 3.4 wet days totalling 8.2mm. Comfortable conditions for being outdoors all day.
December in Longnan averages a daily high of 9.8°C with nights around 0.7°C. Rain is rare — about 0.7 wet days and 0.6mm across the month. 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. Longnan peaks at 84.
Based on 30 years of records, March–May scores highest for comfort in Longnan, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 31.9°C.
July is the wettest, averaging 90.5mm of rain across roughly 10.4 wet days.
January is the coolest month, with average daily highs around 8.9°C.