| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 12.4° | 5.4° | 53.2mm | 8.4 | 59 |
| February | 14.3° | 6.5° | 48.1mm | 7.2 | 67 |
| March | 17.3° | 8.5° | 64.7mm | 8 | 75 |
| April | 20° | 10.5° | 55.8mm | 8.8 | 82 |
| May | 24.7° | 14° | 38.1mm | 5.9 | 88 |
| June | 30.3° | 18.3° | 11.1mm | 2.2 | 82 |
| July | 34.2° | 21.4° | 1.2mm | 0.4 | 70 |
| August | 33.7° | 21.4° | 9.2mm | 1.1 | 71 |
| September | 28° | 17.6° | 28.4mm | 3.9 | 88 |
| October | 22.9° | 14.2° | 47mm | 6.7 | 87 |
| November | 16° | 8.9° | 62.8mm | 7.9 | 71 |
| December | 13.3° | 6.4° | 68.8mm | 8.7 | 61 |
January in Jaén averages a daily high of 12.4°C with nights around 5.4°C. Expect roughly 8.4 wet days totalling 53.2mm. Generally workable, with some weather to plan around.
February in Jaén averages a daily high of 14.3°C with nights around 6.5°C. Expect roughly 7.2 wet days totalling 48.1mm. Generally workable, with some weather to plan around.
March in Jaén averages a daily high of 17.3°C with nights around 8.5°C. Expect roughly 8 wet days totalling 64.7mm. Comfortable conditions for being outdoors all day.
April in Jaén averages a daily high of 20°C with nights around 10.5°C. Expect roughly 8.8 wet days totalling 55.8mm. Comfortable conditions for being outdoors all day.
May in Jaén averages a daily high of 24.7°C with nights around 14°C. Expect roughly 5.9 wet days totalling 38.1mm. Comfortable conditions for being outdoors all day.
June in Jaén averages a daily high of 30.3°C with nights around 18.3°C. Rain is rare — about 2.2 wet days and 11.1mm across the month. Comfortable conditions for being outdoors all day.
July in Jaén averages a daily high of 34.2°C with nights around 21.4°C. Rain is rare — about 0.4 wet days and 1.2mm across the month. Generally workable, with some weather to plan around.
August in Jaén averages a daily high of 33.7°C with nights around 21.4°C. Rain is rare — about 1.1 wet days and 9.2mm across the month. Generally workable, with some weather to plan around.
September in Jaén averages a daily high of 28°C with nights around 17.6°C. Expect roughly 3.9 wet days totalling 28.4mm. Comfortable conditions for being outdoors all day.
October in Jaén averages a daily high of 22.9°C with nights around 14.2°C. Expect roughly 6.7 wet days totalling 47mm. Comfortable conditions for being outdoors all day.
November in Jaén averages a daily high of 16°C with nights around 8.9°C. Expect roughly 7.9 wet days totalling 62.8mm. Generally workable, with some weather to plan around.
December in Jaén averages a daily high of 13.3°C with nights around 6.4°C. Expect roughly 8.7 wet days totalling 68.8mm. 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. Jaén peaks at 88.
Based on 30 years of records, April–June scores highest for comfort in Jaén, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 34.2°C.
December is the wettest, averaging 68.8mm of rain across roughly 8.7 wet days.
January is the coolest month, with average daily highs around 12.4°C.