| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 7.8° | 1.2° | 51.3mm | 14.6 | 31 |
| February | 8.9° | 1.4° | 44.1mm | 12.8 | 38 |
| March | 11.3° | 2.7° | 37mm | 11.2 | 50 |
| April | 14.2° | 3.7° | 34.2mm | 10.2 | 61 |
| May | 17.5° | 6.9° | 47.8mm | 10.2 | 72 |
| June | 20.6° | 9.8° | 51.8mm | 9.7 | 81 |
| July | 23.1° | 11.9° | 44.7mm | 10 | 80 |
| August | 22.9° | 11.8° | 60.7mm | 10.5 | 79 |
| September | 19.9° | 9.7° | 43.3mm | 9.8 | 80 |
| October | 15.5° | 7° | 54.7mm | 12 | 62 |
| November | 11.1° | 3.5° | 60.4mm | 14.2 | 43 |
| December | 7.6° | 1° | 57.4mm | 14 | 31 |
January in Clacton-on-Sea averages a daily high of 7.8°C with nights around 1.2°C. Expect roughly 14.6 wet days totalling 51.3mm. A hard month to visit for comfort alone.
February in Clacton-on-Sea averages a daily high of 8.9°C with nights around 1.4°C. Expect roughly 12.8 wet days totalling 44.1mm. Demanding conditions — pack for it and plan indoor options.
March in Clacton-on-Sea averages a daily high of 11.3°C with nights around 2.7°C. Expect roughly 11.2 wet days totalling 37mm. Demanding conditions — pack for it and plan indoor options.
April in Clacton-on-Sea averages a daily high of 14.2°C with nights around 3.7°C. Expect roughly 10.2 wet days totalling 34.2mm. Generally workable, with some weather to plan around.
May in Clacton-on-Sea averages a daily high of 17.5°C with nights around 6.9°C. Expect roughly 10.2 wet days totalling 47.8mm. Generally workable, with some weather to plan around.
June in Clacton-on-Sea averages a daily high of 20.6°C with nights around 9.8°C. Expect roughly 9.7 wet days totalling 51.8mm. Comfortable conditions for being outdoors all day.
July in Clacton-on-Sea averages a daily high of 23.1°C with nights around 11.9°C. Expect roughly 10 wet days totalling 44.7mm. Comfortable conditions for being outdoors all day.
August in Clacton-on-Sea averages a daily high of 22.9°C with nights around 11.8°C. Expect roughly 10.5 wet days totalling 60.7mm. Comfortable conditions for being outdoors all day.
September in Clacton-on-Sea averages a daily high of 19.9°C with nights around 9.7°C. Expect roughly 9.8 wet days totalling 43.3mm. Comfortable conditions for being outdoors all day.
October in Clacton-on-Sea averages a daily high of 15.5°C with nights around 7°C. Expect roughly 12 wet days totalling 54.7mm. Generally workable, with some weather to plan around.
November in Clacton-on-Sea averages a daily high of 11.1°C with nights around 3.5°C. Expect roughly 14.2 wet days totalling 60.4mm. Demanding conditions — pack for it and plan indoor options.
December in Clacton-on-Sea averages a daily high of 7.6°C with nights around 1°C. Expect roughly 14 wet days totalling 57.4mm. A hard month to visit for comfort alone.
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. Clacton-on-Sea peaks at 81.
Based on 30 years of records, June–September scores highest for comfort in Clacton-on-Sea, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 23.1°C.
August is the wettest, averaging 60.7mm of rain across roughly 10.5 wet days.
December is the coolest month, with average daily highs around 7.6°C.