Weather in Buenos Aires 🇦🇷
Monthly weather averages & travel planning
March
Avg Temp
25°C
Rain Days
8 days
Sun Hours
10 hrs
Humidity
70%
South America › 🇦🇷 Argentina › Buenos Aires
Updated: March 2026
Is March a Good Time to Visit Buenos Aires?
8/10
Excellent
March is a excellent time to visit Buenos Aires (8/10). With 10 daily sunshine hours and only 8 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 5th sunniest of the year in Buenos Aires. Beach and outdoor-focused visitors will find March ideal, though hotel prices reflect demand and popular sites get crowded by mid-morning. Buenos Aires Fashion Week takes place this month, adding cultural value for those planning around it. The main practical note: Buenos Aires's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: book accommodation at least 6-8 weeks ahead, as popular hotels fill quickly during March. Purchasing skip-the-line tickets for major attractions in advance saves meaningful time. If you have flexibility, arriving a few days before or after peak weekends reduces both crowds and prices noticeably.
vs February:27°C avg high
Based on 30-year climate normals (1991 to 2020), March in Buenos Aires averages 25°C by day and 18°C overnight, a range that places it firmly in the warmer tier of the annual calendar. The month records approximately 10 sunshine hours per day and 100mm of total rainfall across 8 wet days, giving it a sunshine-to-rain ratio that is broadly workable for most itineraries.
25°C
77°F
Avg High
18°C
64°F
Avg Low
8 days
100 mm total
Rain Days
10h
per day avg
Sunshine
70%
Moderate
Humidity
Temperature in Buenos Aires in March
The 7°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 70%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Wind averages 22 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 77°F average high, 64°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature Trends
High
Low
Rainfall (mm)
0-20 mm21-50 mm51-100 mm100+ mm
What to Wear in Buenos Aires in March
Morning18°CBefore the day warms up
Afternoon25°CPeak daytime temperature
Evening21°CAfter sunset cools down
Packing for Buenos Aires in March means dressing for 25°C days and 18°C evenings. A light cotton tee with a casual overshirt works well at 25°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 18°C, a modest 7°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues.
Local tip: Layers are more practical than a single heavy garment in Buenos Aires. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
Events in Buenos Aires in March
Buenos Aires Fashion Week
CulturalMarch
Latin America's biggest fashion event showcases Argentine and international designers. Public runway shows take place in the Puerto Madero waterfront district.
Buenos AiresWhat to Pack for Buenos Aires in March
Based on 25°C average highs and 8 rainy days
- Light layers for morning and evening
- Breathable T-shirts and comfortable trousers
- UV-protective sunglasses
- SPF 30+ sunscreen
- Comfortable walking shoes (a second pair lets the first air out overnight)
- Universal travel adapter
- Small day pack for city exploration
- Reusable water bottle
Best Activities in Buenos Aires in March
- Explore outdoor markets and street food stallsMid-morning (10am-12pm)At 25°C, the temperature is ideal for extended walking without overheating
- Guided walking tour of the historic centreMorning or late afternoonComfortable temperatures allow several hours on foot without fatigue
- Visit rooftop viewpoints and observation decksGolden hour (1 hour before sunset)Warm clear evenings provide exceptional visibility for panoramic photography
- Day trip to the surrounding countryside or coastFull day (depart by 8am)March is reliably dry enough for rural day trips without weather risk
- Afternoon in a world-class museum or galleryAfternoon (2-5pm)Pairs well with outdoor morning activities and provides a mid-day rest from sightseeing
- Coffee-house or traditional cafe culture experienceMid-morning or post-lunchA cultural ritual in this region that rewards slow appreciation regardless of weather
- Evening live music, theatre, or opera performanceEvening shows typically at 7-9pmConsistent evening temperatures make getting to and from evening venues comfortable
- Attend Buenos Aires Fashion WeekCheck specific event datesA once-yearly event that defines this city in this month and draws visitors from around the world
- Try the seasonal farmer's market for local produce and street foodSaturday morning markets typically 8am-1pmMarch seasonal produce is at peak availability, offering dishes not found at other times of year
Why is Buenos Aires warm in March?
March brings the first meaningful shift toward cooler conditions in Buenos Aires, as the sun angle drops and day length shortens. Temperatures averaging 25°C by day and 18°C overnight are still comfortable by most standards, but the trend is clearly downward. At 35 degrees south latitude, autumn light has a particular quality: lower in the sky and warmer in tone, it gives the city a photogenic quality quite different from summer. Conditions remain excellent for outdoor activity, and crowds thin compared to the summer peak. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Frequently Asked Questions
Buenos Aires in March
In March, Buenos Aires experiences average highs of 25°C (77°F) and lows of 18°C (64°F). Expect around 8 rainy days and 10 hours of sunshine per day, with humidity averaging 70%. The 7°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 6, so sun protection is advisable on clear days.
Buenos Aires typically sees 8 rainy days in March, with total precipitation of around 100mm. Rain is moderate and manageable. Showers tend to pass quickly, and a light rain layer or foldable umbrella is sufficient protection for most days. For context, the driest month in Buenos Aires typically sees 4-6 fewer rain days than March.
Pack light layers, a light jacket for evenings, comfortable walking shoes, and sunscreen for Buenos Aires in March. Daytime temperatures of 25°C are pleasant, but the evening drop to 18°C means a jacket is essential if you plan to be out after dark. Rain is infrequent with only 8 wet days, so a light rain layer is optional. Comfortable walking shoes are a priority given the amount of ground most visitors cover.
Yes, March is an excellent time to visit Buenos Aires. With 10 daily sunshine hours and only 8 rainy days, conditions are ideal for sightseeing and outdoor activities. Temperatures averaging 25°C during the day are comfortable for long walks and outdoor dining. This is peak travel season, so booking accommodation in advance and arriving at popular attractions early in the morning helps avoid the busiest periods.
The average high temperature in Buenos Aires in March is 25°C (77°F), and the average low is 18°C (64°F). The mean daily temperature is approximately 22°C (71°F). The day-to-night range of 7°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Buenos Aires is generally January. January offers the most sunshine at 12 hours per day and only 7 rainy days. Average temperatures reach 28°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around January gives you the best chance of dry, bright weather.
March is shoulder or low season in Buenos Aires, meaning fewer tourists and generally lower prices than peak months. With 10 sunshine hours and 8 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In March, Buenos Aires suits a range of activities thanks to mild temperatures around 25°C. Mix of indoor and outdoor activities works well given the moderate chance of rain. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 10 hours of sunshine, parks and waterfront walks are particularly enjoyable.
March ranks 5th sunniest of the year in Buenos Aires, with an average 10 daily sunshine hours. The driest months are January, May, and June. January is the hottest month (28°C avg high); July is the coolest (13°C). From here, temperatures fall 4°C into April. Compared to last month (February: 27°C high, 8 rain days), March is cooler and equally dry. March sits in the middle of the annual sunshine ranking for Buenos Aires, offering a reasonable balance of good weather and manageable crowds.
Year-Round Climate
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 28°C | 20°C | 7 | 12h | View |
| February | 27°C | 20°C | 8 | 11h | View |
| March | 25°C | 18°C | 8 | 10h | View |
| April | 21°C | 15°C | 8 | 9h | View |
| May | 17°C | 12°C | 7 | 8h | View |
| June | 14°C | 9°C | 7 | 7h | View |
| July | 13°C | 8°C | 7 | 7h | View |
| August | 16°C | 9°C | 7 | 8h | View |
| September | 17°C | 11°C | 7 | 9h | View |
| October | 20°C | 13°C | 10 | 10h | View |
| November | 24°C | 16°C | 8 | 11h | View |
| December | 27°C | 19°C | 8 | 12h | View |
January
7 rain days, 12h sun
28°20°
February
8 rain days, 11h sun
27°20°
March
8 rain days, 10h sun
25°18°
April
8 rain days, 9h sun
21°15°
May
7 rain days, 8h sun
17°12°
June
7 rain days, 7h sun
14°9°
July
7 rain days, 7h sun
13°8°
August
7 rain days, 8h sun
16°9°
September
7 rain days, 9h sun
17°11°
October
10 rain days, 10h sun
20°13°
November
8 rain days, 11h sun
24°16°
December
8 rain days, 12h sun
27°19°
Other Months in Buenos Aires
Plan Your Trip to Buenos Aires
Data Sources for Buenos Aires
Climate normals represent 30-year averages (1991-2020). Individual years may vary.