| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 2.6° | -2.2° | 12.4mm | 4.6 | 29 |
| February | 3.5° | -1.2° | 14.1mm | 3.3 | 36 |
| March | 7.3° | 1.9° | 20.3mm | 3.8 | 52 |
| April | 12.2° | 6.5° | 36.4mm | 5.1 | 65 |
| May | 17.9° | 11.4° | 55.7mm | 6.9 | 79 |
| June | 21.6° | 15.9° | 75.4mm | 7.6 | 85 |
| July | 24.4° | 19.5° | 167.9mm | 10.3 | 79 |
| August | 26.4° | 21.8° | 153.9mm | 9.8 | 80 |
| September | 24.1° | 19.8° | 79mm | 5.6 | 89 |
| October | 19.1° | 14.5° | 34.4mm | 4.9 | 87 |
| November | 12.3° | 7.2° | 32mm | 5.6 | 64 |
| December | 5.4° | 0.5° | 18.8mm | 6.4 | 38 |
January in Weihai averages a daily high of 2.6°C with nights around -2.2°C. Expect roughly 4.6 wet days totalling 12.4mm. A hard month to visit for comfort alone.
February in Weihai averages a daily high of 3.5°C with nights around -1.2°C. Expect roughly 3.3 wet days totalling 14.1mm. Demanding conditions — pack for it and plan indoor options.
March in Weihai averages a daily high of 7.3°C with nights around 1.9°C. Expect roughly 3.8 wet days totalling 20.3mm. Demanding conditions — pack for it and plan indoor options.
April in Weihai averages a daily high of 12.2°C with nights around 6.5°C. Expect roughly 5.1 wet days totalling 36.4mm. Generally workable, with some weather to plan around.
May in Weihai averages a daily high of 17.9°C with nights around 11.4°C. Expect roughly 6.9 wet days totalling 55.7mm. Comfortable conditions for being outdoors all day.
June in Weihai averages a daily high of 21.6°C with nights around 15.9°C. Expect roughly 7.6 wet days totalling 75.4mm. Comfortable conditions for being outdoors all day.
July in Weihai averages a daily high of 24.4°C with nights around 19.5°C. Expect roughly 10.3 wet days totalling 167.9mm. Comfortable conditions for being outdoors all day.
August in Weihai averages a daily high of 26.4°C with nights around 21.8°C. Expect roughly 9.8 wet days totalling 153.9mm. Comfortable conditions for being outdoors all day.
September in Weihai averages a daily high of 24.1°C with nights around 19.8°C. Expect roughly 5.6 wet days totalling 79mm. Comfortable conditions for being outdoors all day.
October in Weihai averages a daily high of 19.1°C with nights around 14.5°C. Expect roughly 4.9 wet days totalling 34.4mm. Comfortable conditions for being outdoors all day.
November in Weihai averages a daily high of 12.3°C with nights around 7.2°C. Expect roughly 5.6 wet days totalling 32mm. Generally workable, with some weather to plan around.
December in Weihai averages a daily high of 5.4°C with nights around 0.5°C. Expect roughly 6.4 wet days totalling 18.8mm. Demanding conditions — pack for it and plan indoor options.
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. Weihai peaks at 89.
Based on 30 years of records, September–October scores highest for comfort in Weihai, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 26.4°C.
July is the wettest, averaging 167.9mm of rain across roughly 10.3 wet days.
January is the coolest month, with average daily highs around 2.6°C.