| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 18.6° | 4.9° | 11.5mm | 3.2 | 89 |
| February | 21.4° | 7.5° | 11mm | 3.9 | 92 |
| March | 25.5° | 12° | 27.1mm | 4.6 | 91 |
| April | 29.5° | 16° | 36.1mm | 4.8 | 80 |
| May | 32.9° | 20.6° | 78.2mm | 6.7 | 63 |
| June | 35.9° | 23.8° | 53.1mm | 4.8 | 55 |
| July | 36.9° | 24.8° | 32.1mm | 3.8 | 53 |
| August | 37.1° | 24.8° | 74.9mm | 4.4 | 51 |
| September | 33.5° | 21.8° | 66.7mm | 5.4 | 63 |
| October | 28.6° | 16.6° | 55.3mm | 5.4 | 83 |
| November | 22.6° | 10.4° | 22.7mm | 4.3 | 91 |
| December | 18.8° | 5.5° | 13mm | 3.8 | 89 |
January in Ciudad Acuña averages a daily high of 18.6°C with nights around 4.9°C. Expect roughly 3.2 wet days totalling 11.5mm. Comfortable conditions for being outdoors all day.
February in Ciudad Acuña averages a daily high of 21.4°C with nights around 7.5°C. Expect roughly 3.9 wet days totalling 11mm. Comfortable conditions for being outdoors all day.
March in Ciudad Acuña averages a daily high of 25.5°C with nights around 12°C. Expect roughly 4.6 wet days totalling 27.1mm. Comfortable conditions for being outdoors all day.
April in Ciudad Acuña averages a daily high of 29.5°C with nights around 16°C. Expect roughly 4.8 wet days totalling 36.1mm. Comfortable conditions for being outdoors all day.
May in Ciudad Acuña averages a daily high of 32.9°C with nights around 20.6°C. Expect roughly 6.7 wet days totalling 78.2mm. Generally workable, with some weather to plan around.
June in Ciudad Acuña averages a daily high of 35.9°C with nights around 23.8°C. Expect roughly 4.8 wet days totalling 53.1mm. Generally workable, with some weather to plan around.
July in Ciudad Acuña averages a daily high of 36.9°C with nights around 24.8°C. Expect roughly 3.8 wet days totalling 32.1mm. Demanding conditions — pack for it and plan indoor options.
August in Ciudad Acuña averages a daily high of 37.1°C with nights around 24.8°C. Expect roughly 4.4 wet days totalling 74.9mm. Demanding conditions — pack for it and plan indoor options.
September in Ciudad Acuña averages a daily high of 33.5°C with nights around 21.8°C. Expect roughly 5.4 wet days totalling 66.7mm. Generally workable, with some weather to plan around.
October in Ciudad Acuña averages a daily high of 28.6°C with nights around 16.6°C. Expect roughly 5.4 wet days totalling 55.3mm. Comfortable conditions for being outdoors all day.
November in Ciudad Acuña averages a daily high of 22.6°C with nights around 10.4°C. Expect roughly 4.3 wet days totalling 22.7mm. Comfortable conditions for being outdoors all day.
December in Ciudad Acuña averages a daily high of 18.8°C with nights around 5.5°C. Expect roughly 3.8 wet days totalling 13mm. Comfortable conditions for being outdoors all day.
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. Ciudad Acuña peaks at 92.
Based on 30 years of records, November–March scores highest for comfort in Ciudad Acuña, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 37.1°C.
May is the wettest, averaging 78.2mm of rain across roughly 6.7 wet days.
January is the coolest month, with average daily highs around 18.6°C.