Annual mean 17°C · wettest around April · prevailing wind SE
Warmest
27.7 °C
Coldest
13.0 °C
Wettest
65%
Windiest
5.2 m/s
Prevailing
SE
4.7 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Rosario over the whole year is 17°C. January is the hottest month, with highs of about 28°C; July is the coldest, with lows of about 8°C. Rosario has no sharply defined rainy season: the chance of rain on a given day runs from 25% in July, the driest month, to 47% in April, the wettest. Winds in Rosario are highest in November, averaging 4.1 m/s (15 km/h), and lightest in June, at 3.4 m/s (12 km/h). The prevailing wind is from the SE. The clearest skies in Rosario come in January, when the sky is typically 41% covered; July is the cloudiest month, at 56%.
Month by month Rosario climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
28°C
21°C
27°C
42%
41%
4.0 m/s
50
57
18
February
27°C
20°C
26°C
47%
44%
3.8 m/s
48
50
23
March
25°C
18°C
24°C
45%
45%
3.6 m/s
61
38
38
April
21°C
15°C
19°C
47%
51%
3.5 m/s
74
13
65
May
17°C
11°C
14°C
38%
52%
3.5 m/s
44
2
76
June
14°C
9°C
11°C
26%
52%
3.4 m/s
23
1
70
July
13°C
8°C
10°C
25%
56%
3.5 m/s
17
0
64
August
15°C
9°C
12°C
39%
51%
3.7 m/s
25
2
68
September
17°C
11°C
14°C
31%
53%
3.9 m/s
43
2
76
October
20°C
13°C
17°C
37%
47%
4.0 m/s
59
10
69
November
24°C
17°C
22°C
46%
42%
4.1 m/s
70
27
50
December
26°C
19°C
24°C
44%
41%
4.1 m/s
63
39
37
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Rosario weather by season
Year round, Rosario has days of about 13°C at their warmest in July, its coolest month, and 28°C in January, its warmest; the coolest hours of the day run from 8°C to 21°C through the year, and the average temperature over the year is 17°C around the clock. Rain is most likely around April and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Rosario weather in winterJune to August
High 14°CLow 8°CRain 30%
Winter in Rosario has typical daily highs of about 14°C and lows of about 8°C, with a 30% chance of rain on a given day.
Rosario weather in springSeptember to November
High 20°CLow 14°CRain 38%
Spring in Rosario has typical daily highs of about 20°C and lows of about 14°C, with a 38% chance of rain on a given day.
Rosario weather in summerDecember to February
High 27°CLow 20°CRain 44%
Summer in Rosario has typical daily highs of about 27°C and lows of about 20°C, with a 44% chance of rain on a given day.
Rosario weather in autumnMarch to May
High 21°CLow 15°CRain 43%
Autumn in Rosario has typical daily highs of about 21°C and lows of about 15°C, with a 43% chance of rain on a given day.
When is the rainy season in Rosario?
Rosario has no sharply defined rainy season: the chance of rain on a given day runs from 25% in July, the driest month, to 47% in April, the wettest.
What time of year is Rosario windiest?
Winds in Rosario are highest in November, averaging 4.1 m/s (15 km/h), and lightest in June, at 3.4 m/s (12 km/h). The prevailing wind is from the SE.
What is the average temperature in Rosario year round?
The average temperature in Rosario over the whole year is 17°C. January is the hottest month, with highs of about 28°C; July is the coldest, with lows of about 8°C.