7-day weather forecast for Buenos Aires
7-day weather forecast for Buenos Aires: 8°C, Clear sky, Humidity 85%, Wind 8 km/h.
Buenos Aires sits at 34.6° south latitude, in the subtropics, 18 m above sea level, in the America/Argentina/Buenos_Aires time zone. Over the week ahead highs range from 15° to 21° and lows from 7° to 15°, averaging 15°.
Forecast rainfall totals 12 mm, and 2 of the seven days carry a chance above 50%. Today the sun rises at 06:07 and sets at 19:10: 13:03 of daylight.
| Conditions | high | low | rain | Wind | UV index | |
|---|---|---|---|---|---|---|
| Today | Overcast | 15° | 7° | 0% | 11 km/h | 8 |
| Tomorrow | Light drizzle | 16° | 10° | 66% | 13 km/h | 8 |
| Tue, Oct 20 | Overcast | 18° | 11° | 20% | 17 km/h | 8 |
| Wed, Oct 21 | Rain showers | 18° | 13° | 59% | 19 km/h | 8 |
| Thu, Oct 22 | Light drizzle | 21° | 14° | 20% | 14 km/h | 8 |
| Fri, Oct 23 | Overcast | 20° | 15° | 24% | 16 km/h | 4 |
| Sat, Oct 24 | Overcast | 19° | 14° | 35% | 24 km/h | 4 |
Weather data by Open-Meteo (ECMWF, GFS, ICON models and national weather services). Updated every 15 minutes.
Weather in Buenos Aires month by month
The table gathers the 2016-2025 climate normals for Buenos Aires: average highs and lows, total rainfall and number of rainy days for each month of the year.
Buenos Aires has an annual mean temperature of 17.8°. The warmest month is January, when highs sit around 28.6°; the coldest is July, with average lows of 7.6°. The 21° gap between those two ends of the calendar is the measure of how much the year swings here.
Rainfall totals about 1,014 mm a year, spread over roughly 94 rainy days. The wettest month is March, averaging 138.1 mm across 9 days; the driest is June, with 49.2 mm.
| Month | Average high | Average low | Rainfall | Rainy days |
|---|---|---|---|---|
| January | 28.6° | 21° | 74.9 mm | 9 |
| February | 27.8° | 20.4° | 85.2 mm | 7 |
| March | 25° | 18.5° | 138.1 mm | 9 |
| April | 21.3° | 15° | 114.9 mm | 9 |
| May | 17.2° | 11.1° | 89.3 mm | 7 |
| June | 14.6° | 8.2° | 49.2 mm | 7 |
| July | 13.8° | 7.6° | 70.9 mm | 8 |
| August | 15.8° | 8.7° | 61.7 mm | 6 |
| September | 18.2° | 11° | 73.2 mm | 6 |
| October | 21.1° | 13.4° | 89.2 mm | 9 |
| November | 24.7° | 16.6° | 84.3 mm | 9 |
| December | 27.4° | 19.1° | 83.2 mm | 8 |
When to visit Buenos Aires
For travellers who plan around the weather, September and November/December tend to be the most comfortable stretch: average highs between 18.2° and 27.4° and rainfall below the yearly average.
What to expect each month
- In January, highs sit near 28.6° and lows near 21°, with about 74.9 mm of rain over 9 days.
- In February, highs sit near 27.8° and lows near 20.4°, with about 85.2 mm of rain over 7 days.
- In March, highs sit near 25° and lows near 18.5°, with about 138.1 mm of rain over 9 days.
- In April, highs sit near 21.3° and lows near 15°, with about 114.9 mm of rain over 9 days.
- In May, highs sit near 17.2° and lows near 11.1°, with about 89.3 mm of rain over 7 days.
- In June, highs sit near 14.6° and lows near 8.2°, with about 49.2 mm of rain over 7 days.
- In July, highs sit near 13.8° and lows near 7.6°, with about 70.9 mm of rain over 8 days.
- In August, highs sit near 15.8° and lows near 8.7°, with about 61.7 mm of rain over 6 days.
- In September, highs sit near 18.2° and lows near 11°, with about 73.2 mm of rain over 6 days.
- In October, highs sit near 21.1° and lows near 13.4°, with about 89.2 mm of rain over 9 days.
- In November, highs sit near 24.7° and lows near 16.6°, with about 84.3 mm of rain over 9 days.
- In December, highs sit near 27.4° and lows near 19.1°, with about 83.2 mm of rain over 8 days.
Recorded extremes
Across 2016-2025, the thermometer reached 38.9° at the top of the series and fell to -1.4° at the bottom. These are observed values, not averages: they show what the city has actually faced.
Normals computed from the ERA5 reanalysis (Copernicus/ECMWF), 2016-2025 series.
FAQ
What is the temperature in Buenos Aires right now?
It is 8°C in Buenos Aires right now, with clear sky. It feels like 5°C.
Will it rain in Buenos Aires today?
The peak chance of rain today is 0%, with about 0 mm expected.
What will the weather be tomorrow in Buenos Aires?
Tomorrow the high is 16° and the low 10°, with light drizzle.
Where does the data come from and how often is it updated?
Data comes from the ECMWF, GFS and ICON models and national weather services via Open-Meteo, updated every 15 minutes.
What is the warmest month in Buenos Aires?
The warmest month is January, with average highs of 28.6° and lows of 21°.
Does it rain a lot in Buenos Aires?
The city gets about 1,014 mm a year over 94 rainy days. The wettest month is March, with 138.1 mm.
When is the best time to visit Buenos Aires?
On weather grounds, September and November/December combine the most agreeable temperatures with below-average rainfall.