September 30 is generally a great time to visit Buenos Aires. While there is a slight chance of rain (18%), showers are usually brief. Expect comfortable 19°C weather. Buenos Aires is seeing high visitor numbers, so iconic spots may be busier than usual.
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Essential Travel Info for Buenos Aires
Currency
ARS
$ Argentine peso
Language
Guaraní
+1 more
Driving
Right side
Connect
Cafés and restaurants commonly offer cus...
Safety
High Safety
GPI: 1.911
Buenos Aires Weather Forecast for September 30
"Mild & Comfortable. Expect average highs of 19.3°C. 18% chance of rain."
What to Wear in Buenos Aires in September
Based on historical data for September 30, Buenos Aires typically experiences temperatures between 12.1°C and 19.3°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (18% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Buenos Aires
Smart Suitcase
- Light Jacket
- Long Pants
Average High
19.3°C
Daytime Peak
Average Low
12.1°C
Nighttime Low
Feels Like
19.3°C
🌤️ Feels accurate
Rain Chance
18%
Avg 1.4mm if it rains
Cloud Cover
52%
Overcast
Pressure
1016.5 hPa
Medium volatility
Buenos Aires Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
~ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
06:00 - 10:00
16:00 - 18:00
Type I-II
🔴 26 min to burn
Type III-IV
🟡 39 min to burn
Type V-VI
🟢 65 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
14.3°C
Pleasant
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
❄️ Cold Water Hazard
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Argentina
Flight Traffic
Busy
72/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~97
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Buenos Aires
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:33
☀️ Noon
12:44
🌇 Sunset
18:56
⏱️ Daylight
12h 23m
Wind Speed
24.1 km/h
Moderate wind
Sunshine
9.4 hrs
Direct Sun (Cloud-free)
Humidity
73%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Buenos Aires
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Buenos Aires
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Buenos Aires on September 30 averages 19.3°C with a 18% precipitation probability. Wedding/Outdoor Event Score: 93/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Buenos Aires Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
September 23
18.4°C • 11% rain
Score
99
September 24
18.4°C • 13% rain
Score
99
September 25
18.5°C • 12% rain
Score
99
💡 Moving your event by a few days could significantly improve weather conditions
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📍 Is Buenos Aires Worth Visiting on September 30?
Planning a trip to Buenos Aires on September 30? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 19.3°C with a 18% historical precipitation risk.
✈️ Travel Logistics: Approximately 97 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 8 vaccinations are recommended for Argentina, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 17.6°C (refreshing tonic). Wave conditions are generally lake-like with heights around 0.48m.
📊 Historical Extremes: The hottest September 30 recorded in the last 30 years saw temperatures hit 30.2°C in 2024, while the coldest dropped to 6.2°C in 2023.