, with mild, quite dry winters (from mid-May to mid-August) and hot, rainy summers (from December to February). In summer, the rains often occur in the form of thunderstorms.
The city is located in the Pampa Argentina, in the province of Santa Fe, at 33 degrees south latitude and 300 km (185 miles) northwest of Buenos Aires. We are on the west bank of the Paraná River, which on the other side widens into an area occupied by swamps and islands.
is mild, there can sometimes be periods a bit cold, especially at night, when the temperature can drop to around freezing or a little below.
Snow in Rosario is extremely rare, however, in July 2007 there was a light snowfall, while the only real snowfall with accumulation occurred in July 1973.
all year round, in fact, the heat records are around 30 °C (86 °F) even in winter, in July and August. On the other hand, from September to February, there can be heat waves, in which the temperature reaches 38/40 °C (100/104 °F).
But the Pampero, the south wind, is able to interrupt the hot and muggy periods, bringing pleasant temperatures (and sometimes even very cool) for two or three days.
It is difficult to find the best time to visit Rosario, also because there can be sudden changes in temperature. Anyway, you can choose the period
, in which both temperature and rainfall are halfway between winter and summer.
Winter, from mid-May to mid-August, is the mildest and driest season of the year, but sometimes it can get cold, especially at night.
In spring, starting from mid-August, it can be very hot, although it depends on the years. Summer is the sunniest season, but it is hot and muggy, and thunderstorms can break out.
. Here are the average temperatures.
January, the warmest month of the year, is generally a warm to hot month. The average temperature is of
24.8 °C, with a minimum of
18.7 °C and a maximum of
30.9 °C.

On the coldest nights of the month, the temperature usually drops to around
11.5 °C. However, it dropped to
8.6 °C in January 2020.

On the warmest days of the month, the temperature usually reaches around
36.5 °C. However, it reached
40.5 °C in January 2006.

Precipitation amounts to
120.7 mm, distributed over 6 days.
The day lasts on average 14 hours and 0 minutes.

There are on average 9.5 hours of sunshine per day. So, the sun shines 68% of the time.
The average humidity is 65%.
The average wind speed is of
12 kph.
February is generally a warm to hot month. The average temperature is of
23.5 °C, with a minimum of
17.7 °C and a maximum of
29.4 °C.

On the coldest nights of the month, the temperature usually drops to around
10.5 °C. However, it dropped to
6.9 °C in February 2003.

On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
39.3 °C in February 2003.

Precipitation amounts to
127.4 mm, distributed over 7 days.
The day lasts on average 13 hours and 10 minutes.

There are on average 8.5 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 70%.
The average wind speed is of
11.2 kph.
March is generally a warm month. The average temperature is of
21.8 °C, with a minimum of
16 °C and a maximum of
27.7 °C.

On the coldest nights of the month, the temperature usually drops to around
8 °C. However, it dropped to
4.2 °C in March 2012.

On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
36.5 °C in March 2020.

Precipitation amounts to
138.4 mm, distributed over 6 days.
The day lasts on average 12 hours and 10 minutes.

There are on average 7.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
10.7 kph.
April is generally a warm month. The average temperature is of
18.2 °C, with a minimum of
12.4 °C and a maximum of
23.9 °C.

On the coldest nights of the month, the temperature usually drops to around
3.5 °C. However, it dropped to
-0.9 °C in April 2016.

On the warmest days of the month, the temperature usually reaches around
31 °C. However, it reached
36 °C in April 2018.

Precipitation amounts to
119.9 mm, distributed over 7 days.
The day lasts on average 11 hours and 10 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
10.9 kph.
May is generally a very mild month. The average temperature is of
14.8 °C, with a minimum of
9.4 °C and a maximum of
20.1 °C.

On the coldest nights of the month, the temperature usually drops to around
0.5 °C. However, it dropped to
-5.7 °C in May 2008.

On the warmest days of the month, the temperature usually reaches around
27.5 °C. However, it reached
32.9 °C in May 1997.

Precipitation amounts to
57.7 mm, distributed over 4 days.
The day lasts on average 10 hours and 25 minutes.

There are on average 5.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of
10.7 kph.
June is generally a mild month. The average temperature is of
11.6 °C, with a minimum of
6.2 °C and a maximum of
17 °C.

On the coldest nights of the month, the temperature usually drops to around
-3 °C. However, it dropped to
-6.7 °C in June 2017.

On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
29 °C in June 2005.

Precipitation amounts to
28.3 mm, distributed over 3 days.
The day lasts on average 10 hours and 0 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.

There are on average 5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of
11.3 kph.
July, the coldest month of the year, is generally a mild month. The average temperature is of
10.7 °C, with a minimum of
4.9 °C and a maximum of
16.5 °C.

On the coldest nights of the month, the temperature usually drops to around
-3.5 °C. However, it dropped to
-8.4 °C in July 2020.

On the warmest days of the month, the temperature usually reaches around
25.5 °C. However, it reached
31.6 °C in July 2008.

Precipitation amounts to
23 mm, distributed over 3 days.
The day lasts on average 10 hours and 10 minutes.

There are on average 5.5 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of
12.2 kph.
August is generally a mild month. The average temperature is of
12.8 °C, with a minimum of
6.3 °C and a maximum of
19.2 °C.

On the coldest nights of the month, the temperature usually drops to around
-2.5 °C. However, it dropped to
-7.8 °C in August 1995.

On the warmest days of the month, the temperature usually reaches around
28.5 °C. However, it reached
35 °C in August 1996.

Precipitation amounts to
35.3 mm, distributed over 3 days.
The day lasts on average 11 hours and 0 minutes.

There are on average 6.5 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 69%.
The average wind speed is of
13.2 kph.
September is generally a very mild month. The average temperature is of
15.1 °C, with a minimum of
8.7 °C and a maximum of
21.5 °C.

On the coldest nights of the month, the temperature usually drops to around
0 °C. However, it dropped to
-3.4 °C in September 2019.

On the warmest days of the month, the temperature usually reaches around
30.5 °C. However, it reached
37.3 °C in September 2013.

Precipitation amounts to
48 mm, distributed over 4 days.
The day lasts on average 11 hours and 55 minutes.

There are on average 6.5 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 65%.
The average wind speed is of
14.7 kph.
October is generally a warm month. The average temperature is of
18.3 °C, with a minimum of
12.3 °C and a maximum of
24.3 °C.

On the coldest nights of the month, the temperature usually drops to around
4 °C. However, it dropped to
0.6 °C in October 1999.

On the warmest days of the month, the temperature usually reaches around
32.5 °C. However, it reached
38 °C in October 2014.

Precipitation amounts to
118.7 mm, distributed over 8 days.
The day lasts on average 13 hours and 0 minutes.

There are on average 7 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 67%.
The average wind speed is of
15.3 kph.
November is generally a warm month. The average temperature is of
21.2 °C, with a minimum of
15 °C and a maximum of
27.5 °C.

On the coldest nights of the month, the temperature usually drops to around
8 °C. However, it dropped to
1.8 °C in November 1992.

On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
39.4 °C in November 2020.

Precipitation amounts to
108.2 mm, distributed over 7 days.
The day lasts on average 13 hours and 50 minutes.

There are on average 9 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 63%.
The average wind speed is of
14.5 kph.
December is generally a warm to hot month. The average temperature is of
23.6 °C, with a minimum of
17.3 °C and a maximum of
29.8 °C.

On the coldest nights of the month, the temperature usually drops to around
10.5 °C. However, it dropped to
6.2 °C in December 2010.

On the warmest days of the month, the temperature usually reaches around
36 °C. However, it reached
39.6 °C in December 1995.

Precipitation amounts to
127.9 mm, distributed over 8 days.
The day lasts on average 14 hours and 20 minutes. So the days are long. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.

There are on average 9.5 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 63%.
The average wind speed is of
13 kph.