| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 13.6° | — | 116.3mm | 10 | 60 |
| February | 15.1° | — | 100mm | 6.7 | 71 |
| March | 18° | 10.3° | 53mm | 8.5 | 77 |
| April | 19.3° | 10.2° | 91.7mm | 14.5 | 69 |
| May | 22.1° | 11.2° | 132.6mm | 15 | 70 |
| June | 25.6° | 14° | 12.2mm | 2.3 | 95 |
| July | 27.7° | 15.6° | 8.3mm | 2.3 | 93 |
| August | 28.4° | 15.9° | 13.2mm | 5 | 84 |
| September | 26.6° | 14.1° | 80.9mm | 10 | 80 |
| October | 21.9° | 11.7° | 77.8mm | 11.3 | 77 |
| November | 16.3° | 8.6° | 116.8mm | 12.2 | 64 |
| December | 13.7° | — | 71.4mm | 9 | 62 |
January in Coimbra averages a daily high of 13.6°C. Expect roughly 10 wet days totalling 116.3mm. Generally workable, with some weather to plan around.
February in Coimbra averages a daily high of 15.1°C. Expect roughly 6.7 wet days totalling 100mm. Generally workable, with some weather to plan around.
March in Coimbra averages a daily high of 18°C with nights around 10.3°C. Expect roughly 8.5 wet days totalling 53mm. Comfortable conditions for being outdoors all day.
April in Coimbra averages a daily high of 19.3°C with nights around 10.2°C. Expect roughly 14.5 wet days totalling 91.7mm. Generally workable, with some weather to plan around.
May in Coimbra averages a daily high of 22.1°C with nights around 11.2°C. Expect roughly 15 wet days totalling 132.6mm. Generally workable, with some weather to plan around.
June in Coimbra averages a daily high of 25.6°C with nights around 14°C. Rain is rare — about 2.3 wet days and 12.2mm across the month. Comfortable conditions for being outdoors all day.
July in Coimbra averages a daily high of 27.7°C with nights around 15.6°C. Rain is rare — about 2.3 wet days and 8.3mm across the month. Comfortable conditions for being outdoors all day.
August in Coimbra averages a daily high of 28.4°C with nights around 15.9°C. Expect roughly 5 wet days totalling 13.2mm. Comfortable conditions for being outdoors all day.
September in Coimbra averages a daily high of 26.6°C with nights around 14.1°C. Expect roughly 10 wet days totalling 80.9mm. Comfortable conditions for being outdoors all day.
October in Coimbra averages a daily high of 21.9°C with nights around 11.7°C. Expect roughly 11.3 wet days totalling 77.8mm. Comfortable conditions for being outdoors all day.
November in Coimbra averages a daily high of 16.3°C with nights around 8.6°C. Expect roughly 12.2 wet days totalling 116.8mm. Generally workable, with some weather to plan around.
December in Coimbra averages a daily high of 13.7°C. Expect roughly 9 wet days totalling 71.4mm. 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. Coimbra peaks at 95.
Based on 30 years of records, June–July scores highest for comfort in Coimbra, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 28.4°C.
May is the wettest, averaging 132.6mm of rain across roughly 15 wet days.
January is the coolest month, with average daily highs around 13.6°C.