| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 22.8° | 9.2° | — | — | 94 |
| February | 25.2° | 11.8° | — | — | 94 |
| March | 28.6° | 15.3° | — | — | 88 |
| April | 31.4° | 18.4° | — | — | 76 |
| May | 34.1° | 21.9° | — | — | 66 |
| June | 36.6° | 23.7° | — | — | 56 |
| July | 37° | 24.4° | — | — | 54 |
| August | 37.9° | 24.1° | — | — | 50 |
| September | 35.1° | 22° | — | — | 62 |
| October | 32.2° | 17.8° | — | — | 73 |
| November | 27.1° | 13.5° | — | — | 94 |
| December | 23.5° | 10.2° | — | — | 94 |
January in Ciudad Río Bravo averages a daily high of 22.8°C with nights around 9.2°C. Comfortable conditions for being outdoors all day.
February in Ciudad Río Bravo averages a daily high of 25.2°C with nights around 11.8°C. Comfortable conditions for being outdoors all day.
March in Ciudad Río Bravo averages a daily high of 28.6°C with nights around 15.3°C. Comfortable conditions for being outdoors all day.
April in Ciudad Río Bravo averages a daily high of 31.4°C with nights around 18.4°C. Comfortable conditions for being outdoors all day.
May in Ciudad Río Bravo averages a daily high of 34.1°C with nights around 21.9°C. Generally workable, with some weather to plan around.
June in Ciudad Río Bravo averages a daily high of 36.6°C with nights around 23.7°C. Generally workable, with some weather to plan around.
July in Ciudad Río Bravo averages a daily high of 37°C with nights around 24.4°C. Demanding conditions — pack for it and plan indoor options.
August in Ciudad Río Bravo averages a daily high of 37.9°C with nights around 24.1°C. Demanding conditions — pack for it and plan indoor options.
September in Ciudad Río Bravo averages a daily high of 35.1°C with nights around 22°C. Generally workable, with some weather to plan around.
October in Ciudad Río Bravo averages a daily high of 32.2°C with nights around 17.8°C. Generally workable, with some weather to plan around.
November in Ciudad Río Bravo averages a daily high of 27.1°C with nights around 13.5°C. Comfortable conditions for being outdoors all day.
December in Ciudad Río Bravo averages a daily high of 23.5°C with nights around 10.2°C. 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 Río Bravo peaks at 94.
Based on 30 years of records, November–March scores highest for comfort in Ciudad Río Bravo, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 37.9°C.
January is the wettest, averaging —mm of rain across roughly — wet days.
January is the coolest month, with average daily highs around 22.8°C.