Buenos Aires · Argentina · 1995–2024 averages
Buenos Aires weather, month by month. December is the pick.
Thirty years of averages for Buenos Aires, Argentina — how hot it really feels, when the rain arrives, and what the air is like. December comes out on top; July is the one to skip.
The year at a glance
Tap a month for its full breakdown.
December
bestscore 81.4/100Warm, sticky and some rain, with clean air.
- Feels like
- 28°
- warm
- Real temp
- 27°
- mild
- Humidity
- 66%
- sticky
- Rain
- 86mm
- some rain
- Cloud cover
- 38%
- bright
- Air quality
- 38
- clean
- Daylight
- 14.4h
- long days
Month by month, metric by metric
Each strip covers the same twelve months, so you can see where the rain lands and how the air shifts with it.
Feels like
peaks at 30° in January
Real temp
14–28° in the shade across the year
Humidity
66% at its driest, 80% at its most oppressive
Rain
119mm in March, 58mm in June
Cloud cover
37% at its clearest, 55% at its greyest
Air quality
worst in June, cleanest in December
Daylight
9.9h to 14.4h of daylight across the year
Buenos Aires's air, month by month
The air is at its worst in June at 50 AQI (clean), and at its cleanest in December at 38 (clean). The dirtiest months here are also the driest.
Every month in full
All twelve months, all seven measures.
| Month | Feels like | Real temp | Humidity | Rain | Cloud cover | Air quality | Daylight |
|---|---|---|---|---|---|---|---|
| January | 30° warm | 28° warm | 68% sticky | 84mm some rain | 37% bright | 40 clean | 14.2h long days |
| February | 29° warm | 27° mild | 72% sticky | 103mm some rain | 41% bright | 46 clean | 13.3h even |
| March | 26° mild | 25° mild | 74% sticky | 119mm some rain | 41% bright | 44 clean | 12.3h even |
| April | 21° mild | 21° mild | 76% sweaty | 100mm some rain | 46% bright | 41 clean | 11.2h shortish |
| May | 16° cool | 17° cool | 79% sweaty | 73mm dryish | 54% bright | 44 clean | 10.3h shortish |
| June | 12° cold | 14° cool | 80% sweaty | 58mm dryish | 55% mixed | 50 clean | 9.9h short |
| July | 11° cold | 14° cool | 79% sweaty | 73mm dryish | 53% bright | 46 clean | 10.1h shortish |
| August | 14° cool | 16° cool | 77% sweaty | 70mm dryish | 51% bright | 43 clean | 10.9h shortish |
| September | 16° cool | 18° cool | 74% sticky | 76mm some rain | 50% bright | 44 clean | 11.9h shortish |
| October | 20° cool | 21° mild | 73% sticky | 106mm some rain | 50% bright | 40 clean | 13h even |
| November | 24° mild | 24° mild | 69% sticky | 96mm some rain | 43% bright | 39 clean | 13.9h even |
| December | 28° warm | 27° mild | 66% sticky | 86mm some rain | 38% bright | 38 clean | 14.4h long days |
Buenos Aires weather questions
- What is the best time to visit Buenos Aires?
- December scores best across temperature, rain, humidity and air quality — 28° feels-like, 86mm of rain and 66% humidity. July is the month to avoid: 73mm of rain and 46 AQI.
- How hot does Buenos Aires get?
- January is the peak, at 30° feels-like (28° in the shade) — warm. Even in December it reaches 28°.
- When is the rainy season in Buenos Aires?
- March is the wettest month at 119mm, and June the driest at just 58mm.
- Is air quality a problem in Buenos Aires?
- June is the worst month at 50 AQI (clean), and December the best at 38 (clean).
Weather normals from Open-Meteo (ERA5 reanalysis, 1995–2024) and CAMS air quality (2015–2024), licensed CC-BY-4.0. Contains modified Copernicus Climate Change Service information. These are long-run averages, not forecasts — any given year will differ.
Going in December? You won't be the only one.
Suppertime shows you a live map of what other travelers in Buenos Aires are doing tonight. Tap a plan, show up, meet people.