The month in detail
What to expect in September
Spring marks the start of the good season in Rosario. Temperatures rise (70°F) and tourists have not yet arrived en masse. Rain risk remains low (14% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if November (8.9/10) remains theoretically better.
September ranks 5 out of 12 months in Rosario. Compared to August: +5°F daytime.
This month's conditions
What it's like in September
UV index
6 · moderate
protect during midday hours
Feels like
dry air
9°
Daylight
11.8h of daylight
Air quality
good
AQI 27
Compare
Is September the right month?
The best month in Rosario is November (8.9/10), 0.9 pt higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Rosario
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Rosario
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a city break.
Country · Argentina
🗣️LanguageSpanish
💶CurrencyArgentine Peso ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘCheap · 2/5
🌡️ Climate
🌍Climate typeTemperate
📈Climate trend ⓘ+1.48°F/decade
🔥Hottest monthJanuary · 88°F
❄️Coolest monthJune · 61°F
🌧️Rainiest month ⓘApril · 24%
🏛️ City break
📅Tourist peak seasonJune → August
☔Indoor sights ⓘYear-round
🚇Public transportGood
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Rosario ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
ArgentinaTemperate climate with a 8.9 → 5.8 gap between best and worst month. 10 years of ERA5 data to choose by project.
32.95°S · 60.64°W
Questions
Frequently asked questions
What is the best time to visit Rosario?
November is the best month with 81°F highs, 61°F lows, 8.9h of sunshine and 17.0% rainy days. The months of November & December offer comparable conditions.
How many hours of sunshine does Rosario get in November?
Rosario averages 8.9 sunshine hours per day in November. It is the sunniest month with a climate score of 8.4/10.
What is the rainiest month in Rosario?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Rosario in November?
In November, overnight lows reach 61°F, while afternoon highs average 81°F.
Is Rosario good in winter?
In winter (December-February), Rosario scores 6.6/10 on average — Acceptable conditions for cultural visits.. The best month overall remains November with a score of 8.4/10.
When should you avoid Rosario?
January is the most difficult month to visit Rosario, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Do you need sun protection in Rosario in September?
The average UV index reaches 6 in September in Rosario (moderate), with about 11.8h of daylight. Protect during midday hours.