| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 9.6° | 3.8° | 129.8mm | 17.5 | 37 |
| February | 9.9° | 3.9° | 102.2mm | 15.9 | 38 |
| March | 11.2° | 4.9° | 88.4mm | 14.4 | 43 |
| April | 13.4° | 5.9° | 69.6mm | 11.9 | 55 |
| May | 16.2° | 8.4° | 62.7mm | 11.8 | 64 |
| June | 19.1° | 10.9° | 63.3mm | 10.7 | 76 |
| July | 21° | 12.8° | 70.9mm | 11.3 | 77 |
| August | 20.9° | 13.1° | 75mm | 13 | 74 |
| September | 18.9° | 11.7° | 70.4mm | 11.5 | 73 |
| October | 15.8° | 9.7° | 129.9mm | 17.2 | 57 |
| November | 12.4° | 6.4° | 128.6mm | 18.3 | 46 |
| December | 10.4° | 4.6° | 141.6mm | 18.4 | 39 |
January in Exeter averages a daily high of 9.6°C with nights around 3.8°C. Expect roughly 17.5 wet days totalling 129.8mm. Demanding conditions — pack for it and plan indoor options.
February in Exeter averages a daily high of 9.9°C with nights around 3.9°C. Expect roughly 15.9 wet days totalling 102.2mm. Demanding conditions — pack for it and plan indoor options.
March in Exeter averages a daily high of 11.2°C with nights around 4.9°C. Expect roughly 14.4 wet days totalling 88.4mm. Demanding conditions — pack for it and plan indoor options.
April in Exeter averages a daily high of 13.4°C with nights around 5.9°C. Expect roughly 11.9 wet days totalling 69.6mm. Generally workable, with some weather to plan around.
May in Exeter averages a daily high of 16.2°C with nights around 8.4°C. Expect roughly 11.8 wet days totalling 62.7mm. Generally workable, with some weather to plan around.
June in Exeter averages a daily high of 19.1°C with nights around 10.9°C. Expect roughly 10.7 wet days totalling 63.3mm. Comfortable conditions for being outdoors all day.
July in Exeter averages a daily high of 21°C with nights around 12.8°C. Expect roughly 11.3 wet days totalling 70.9mm. Comfortable conditions for being outdoors all day.
August in Exeter averages a daily high of 20.9°C with nights around 13.1°C. Expect roughly 13 wet days totalling 75mm. Generally workable, with some weather to plan around.
September in Exeter averages a daily high of 18.9°C with nights around 11.7°C. Expect roughly 11.5 wet days totalling 70.4mm. Generally workable, with some weather to plan around.
October in Exeter averages a daily high of 15.8°C with nights around 9.7°C. Expect roughly 17.2 wet days totalling 129.9mm. Generally workable, with some weather to plan around.
November in Exeter averages a daily high of 12.4°C with nights around 6.4°C. Expect roughly 18.3 wet days totalling 128.6mm. Demanding conditions — pack for it and plan indoor options.
December in Exeter averages a daily high of 10.4°C with nights around 4.6°C. Expect roughly 18.4 wet days totalling 141.6mm. 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. Exeter peaks at 77.
Based on 30 years of records, June–September scores highest for comfort in Exeter, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 21°C.
December is the wettest, averaging 141.6mm of rain across roughly 18.4 wet days.
January is the coolest month, with average daily highs around 9.6°C.