The best times to visit Rosario for ideal weather are
March 5th to June 3rd
August 27th to November 11th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Rosario Travel Guide
Weather in Rosario
Average temperatures in Rosario vary greatly. Considering humidity, temperatures feel very nice much of the year, but hot in the summer and cold in the winter with a fair chance of precipitation about half of the year. The area is somewhat temperate — in the 45th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Rosario, the hottest months are January, December, and then February. See average monthly temperatures below. The warmest time of year is generally late January where highs are regularly around 91.2°F (32.9°C) with temperatures rarely dropping below 67.2°F (19.6°C) at night.
Rosario Temperatures (Fahrenheit)
Rosario Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Rosario Perceived Temperature (F)
Rosario Perceived Temperature (C)
Average Rosario Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Rosario are June, July, and then August. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid June. For example, on the week of June 18th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late January and early February with an average of 2 days of significant precipitation the week of January 29th.
When can you find snow in Rosario? Weather stations report very large amounts of snow likely to be deepest around June, especially close to early June. The best time to ski (if at all) in Rosario is often around around June 4th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
The graph below shows the % chance of rainy and snowy days in Rosario.
Snow on the Ground
The graph below shows the average snow on the ground in Rosario (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Rosario has some very humid months, with other comfortably humid months. The least humid month is November (54% relative humidity), and the most humid month is May (70.3%).
Wind in Rosario is usually calm. The windiest month is October, followed by September and November. October’s average wind speed of around 8 knots (9.2 MPH or 14.7 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early November where average top sustained speeds reach 15.4 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Rosario.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||6.3||Light breeze||12.5||Significant breeze|
|Feb||5.9||Light breeze||11.8||Significant breeze|
|Mar||5.4||Light breeze||11.2||Significant breeze|
|Apr||5.2||Light breeze||11.3||Significant breeze|
|May||5.3||Light breeze||10.8||Significant breeze|
|Jun||5.5||Light breeze||11||Significant breeze|
|Jul||6||Light breeze||11.8||Significant breeze|
|Aug||7.1||Gentle breeze||13.5||Significant breeze|
|Sep||7.9||Gentle breeze||13.7||Significant breeze|
|Oct||8||Gentle breeze||14.3||Significant breeze|
|Nov||7.5||Gentle breeze||14.2||Significant breeze|
|Dec||6.7||Light breeze||13.8||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Rosario?
Our best data indicates this area is generally safe. As of Mar 17, 2019 there are no travel advisories or warnings for Argentina; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Jan 16, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Rosario, Argentina is January, followed by February and October. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Rosario in June. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Rosario Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 85.1°F (29.5°C) and 65.3°F (18.5°C) with colder temperatures in the later months. Rain is somewhat common with 3 to 7 days of significant precipitation per month. Fall is fairly slow for tourism, which makes it a good time for those looking for deals.
Winter (June through August)
The middle-year months have cold weather with high temperatures that are comfortable. These months see the least precipitation with 1 to 2 days of precipitation per month. June – August is the slowest season for tourism in Rosario, so lodging and other accommodations may cost less than usual.
Spring (September through November)
Spring daily highs range from 85.7°F (29.8°C) and 70.8°F (21.6°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 5 to 7 days per month. Tourism is the second busiest during these months due to the weather, so hotels may be slightly higher priced.
Summer (December through February)
Weather is perfect this time of year in Rosario to be enjoyable for warm weather travelers. The average high during this season is between 91.2°F (32.9°C) and 82.6°F (28.1°C). On average, it rains or snows a fair amount: 6 to 8 times per month. These times of year are the busiest with tourists.