Buenos Aires Weather in March
Argentina · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
March in Buenos Aires sees average temperatures ranging from a low of 19.2°C (66.6°F) to a high of 25.6°C (78.1°F), with a mean of 22.2°C (72.0°F). Compared to the annual average of 17.6°C (63.7°F), this month is 4.6°C warmer than the yearly norm. Precipitation averages 166.9mm, making it approximately 92.0mm wetter than the monthly average of 74.0mm. This is the wettest month of the year, with 166.9mm of precipitation and around 13.2 rainy days. The city receives an average of 10.1 hours of sunshine per day during March, with relative humidity averaging 74.2%. Wind speeds reach an average maximum of 23.4 km/h. For travelers, this month offers a temperature experience in Buenos Aires, with wetter-than-average conditions compared to the rest of the year.
If you're planning outdoor activities in Buenos Aires, the seasons are flipped but mild. I ran the Costanera Sur in January (summer): 30°C with 70% humidity, draining but the river breeze helped. March-April is the outdoor sweet spot: 22°C, manageable UV, empty paths. October-November is similarly ideal — jacarandas blooming, 20°C, perfect cycling weather. July (winter) brings 12°C and dampness; running is fine but mornings feel raw. UV peaks dangerously in January (11+); sun protection is mandatory between 10am-4pm. The wind off the Río de la Plata is constant and can be bracing in winter.
March vs Adjacent Months
| Metric | February | March | April |
|---|---|---|---|
| Mean Temp | 23.5°C (74.3°F) | 22.2°C (72.0°F) | 18.0°C (64.4°F) |
| Rainfall | 79.2mm | 166.9mm | 98.9mm |
| Sunshine | 11.5 hrs | 10.1 hrs | 8.8 hrs |
| Humidity | 68.6% | 74.2% | 76.9% |
| Wind | 23.8 km/h | 23.4 km/h | 22.4 km/h |
| Rainy Days | 11.0 | 13.2 | 10.8 |
Seasonal Context
March falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Buenos Aires in March, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Buenos Aires in March?
The average temperature in Buenos Aires during March ranges from 19.2°C (66.6°F) to 25.6°C (78.1°F), with a mean of 22.2°C (72.0°F).
How much does it rain in Buenos Aires in March?
Buenos Aires receives an average of 166.9mm of precipitation in March, spread across approximately 13.2 rainy days. This is the wettest month of the year.
What should I pack for Buenos Aires in March?
Based on March weather data, pack layers including light jackets and t-shirts, plus an umbrella. Rain gear is essential — this month averages 166.9mm of precipitation.
Is March a good time to visit Buenos Aires?
March is a month with challenging conditions. Plan activities carefully and stay hydrated.
Other Months for Buenos Aires
Cities with Similar March Climate (Humid Subtropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: -34.61°, -58.38°. Timezone: America/Argentina/Buenos_Aires. Last updated: 2026-07-30.