5-day weather forecast Buenos Aires Sep 23, 2026
18°Weather forecast Buenos Aires today Sep 23, 2026: overcast, temperature from 8 °C to 18 °C.
Precipitation probability 20%. Wind up to 6.5 m/s (gusts 12.5 m/s). Air humidity 39–72%, atmospheric pressure 760–766 mm Hg, UV index up to 7.6.
5 days at a glance — tap a day to open it
Sunrise 06:41
Sunset 18:50
Sunset 18:50
Waxing Gibbous95% illuminated
Moonrise 16:15 · Moonset 05:09
Moonrise 16:15 · Moonset 05:09
Chart
Table
Wed, Sep 23, 2026
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Overcast | 10 °C | 14% | 100% | 59% | 766 mm Hg | N 10° 3.5 (4.61) m/s | 0 |
| 01:00 | Overcast | 9 °C | 16% | 100% | 63% | 765 mm Hg | NNE 14° 4.39 (6.11) m/s | 0 |
| 02:00 |  Clear | 9 °C | 6% | 16% | 65% | 765 mm Hg | N 4° 4.5 (6.83) m/s | 0 |
| 03:00 | Overcast | 8 °C | 17% | 100% | 66% | 764 mm Hg | N 5° 4.69 (8.14) m/s | 0 |
| 04:00 | Overcast | 8 °C | 17% | 100% | 66% | 765 mm Hg | N 1° 4.19 (7.89) m/s | 0 |
| 05:00 | Overcast | 8 °C | 18% | 100% | 67% | 764 mm Hg | N 1° 4.89 (8.89) m/s | 0 |
| 06:00 | Overcast | 8 °C | 20% | 100% | 72% | 764 mm Hg | NNW 347° 4.5 (9.39) m/s | 0 |
| 07:00 | Overcast | 8 °C | 19% | 100% | 71% | 764 mm Hg | NNW 343° 4.81 (10) m/s | 0 |
| 08:00 | Overcast | 8 °C | 18% | 100% | 68% | 764 mm Hg | NNW 347° 5.19 (10.83) m/s | 0.4 |
| 09:00 | Overcast | 10 °C | 15% | 100% | 62% | 765 mm Hg | NNW 346° 5.39 (9.61) m/s | 1.5 |
| 10:00 | Overcast | 11 °C | 13% | 100% | 55% | 765 mm Hg | NNW 348° 5.19 (7.56) m/s | 2.9 |
| 11:00 |  Cloudy | 13 °C | 8% | 77% | 47% | 765 mm Hg | NNW 345° 5.19 (7.42) m/s | 5.1 |
| 12:00 |  Sunny | 15 °C | 1% | 5% | 40% | 764 mm Hg | N 355° 4.89 (6.64) m/s | 6.3 |
| 13:00 | Sunny | 16 °C | 1% | 5% | 40% | 763 mm Hg | NNE 12° 5.31 (6.75) m/s | 7.6 |
| 14:00 |  Partly cloudy | 17 °C | 2% | 28% | 39% | 761 mm Hg | NNE 17° 5.61 (6.92) m/s | 6.9 |
| 15:00 | Overcast | 18 °C | 10% | 100% | 39% | 761 mm Hg | N 10° 5.89 (7.5) m/s | 4.6 |
| 16:00 | Overcast | 18 °C | 10% | 100% | 42% | 760 mm Hg | N 9° 6.11 (7.81) m/s | 2.8 |
| 17:00 | Overcast | 18 °C | 11% | 100% | 45% | 760 mm Hg | N 10° 6.39 (8.61) m/s | 1.3 |
| 18:00 | Overcast | 17 °C | 12% | 100% | 49% | 760 mm Hg | N 3° 6.5 (9.42) m/s | 0.3 |
| 19:00 | Overcast | 16 °C | 13% | 100% | 54% | 761 mm Hg | N 357° 5.39 (10) m/s | 0 |
| 20:00 | Overcast | 15 °C | 14% | 100% | 57% | 761 mm Hg | N 359° 5 (11.11) m/s | 0 |
| 21:00 | Overcast | 15 °C | 15% | 100% | 61% | 761 mm Hg | N 356° 4.69 (11.5) m/s | 0 |
| 22:00 | Overcast | 14 °C | 15% | 100% | 63% | 761 mm Hg | N 354° 4.5 (11.42) m/s | 0 |
| 23:00 | Overcast | 14 °C | 16% | 100% | 64% | 761 mm Hg | NNW 347° 5.39 (12.5) m/s | 0 |
Wed, Sep 23, 2026
Frequently asked questions about the 5-day weather in Buenos Aires
What will the weather be like in Buenos Aires over the next 5 days?
Over the next 5 days in Buenos Aires the temperature is expected to range from about 8 to 25 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
On which of the next 5 days will it rain in Buenos Aires?
The chance of rain in Buenos Aires over the next 5 days reaches 34%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
How accurate is the 5-day weather forecast for Buenos Aires?
A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.
Which of the next 5 days in Buenos Aires will be the warmest and which the coolest?
Over the next 5 days the temperature in Buenos Aires ranges from about 8 to 25 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in Buenos Aires over the next 5 days?
Over the next 5 days the wind in Buenos Aires picks up to 8 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in Buenos Aires is best for a walk or a trip?
For a walk or a trip, pick the days with the lowest chance of rain (up to 34%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for Buenos Aires?
The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.
Will I need an umbrella or sunscreen in Buenos Aires this week?
Rain reaches a 34% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 7.6; sunscreen is worth it from about 3 upwards.
Buenos Aires on the map
Data Sources & Methodology
Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.