5-day weather forecast Buenos Aires 21-03-2026

Weather forecast Buenos Aires Saturday 21 March 21.03.2026: patchy rain possible, temperature from 17 °C to 25 °C.

Precipitation probability 100%. Wind up to 7.89 m/s (gusts 11.31 m/s). Air humidity 75–96%, atmospheric pressure 752–759 mm Hg, UV index up to 5.2.

Sunrise 06:56
Sunset 19:09

Chart

Table

Type of temperature:

°C

°F

← Fri, 20 Mar

Sat, 21 Mar, 2026

Sun, 22 Mar →

Forecast from 17 °C to 25 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	22	22	22	22	22	22	22	22	22	22	22	23	24	25	25	23	22	21	19	18	18	18	17	17
Precipitation (mm/hr)	1.46	0.02	0	0.01	0	0	0	0	0.03	0.02	0.03	0.01	0.01	0.03	0.21	0.62	0.22	0.01	0	0	0	0	0	0

Cloud cover

Cloud cover
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	100	91	80	96	85	71	58	57	100	100	100	87	55	73	93	100	100	94	87	29	20	12	4	0

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	6.39	7.69	7.69	7.69	7.11	5.61	5.69	5.61	7	6.11	6.11	6.19	5.19	4.11	3.19	5	7.39	7.89	6.69	5.19	4.89	5.19	5	5.31
Wind gust (m/s)	9.39	11.31	11.19	11.28	10.33	8.14	8.39	8.17	9.97	8.33	8.11	8.03	6.64	5.47	4.56	7.33	10.89	10.61	8.67	6.89	6.53	7.03	6.78	7.25

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	96	95	94	92	92	91	91	91	90	89	88	82	77	75	77	89	91	90	88	86	86	85	82	80

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	754	754	754	754	753	752	754	753	755	755	755	755	755	755	754	755	755	755	756	757	757	758	759	759

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0	0	0.4	1.4	2.2	2.2	2.6	5.2	1.3	0.9	1.6	1	0.3	0	0	0	0	0

← Fri, 20 Mar

Sat, 21 Mar, 2026

Sun, 22 Mar →

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.

Learn more about our methodology →