Rosario monthly weather forecast

Monthly weather forecast for Rosario. ℃ Average temperatures % Humidity, precipitation ️ Sunrise and sunset ️ Wind direction and speed

17 July 2026, Friday
+17°C / +22°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+20°C
13.2
90%
993
01:00
+19°C
11.2
92%
993
02:00
+19°C
8.9
93%
993
03:00
+19°C
10
94%
992
04:00
+19°C
10.5
94%
992
05:00
+19°C
1.2
93%
992
06:00
+17°C
3.6
97%
992
07:00
+18°C
10.6
98%
992
08:00
+17°C
10.1
94%
992
09:00
+17°C
11.1
95%
994
10:00
+17°C
3.4
95%
994
11:00
+18°C
7.2
98%
995
12:00
+19°C
4.5
93%
994
13:00
+21°C
3.5
85%
994
14:00
+22°C
7.9
77%
993
15:00
+21°C
5.5
78%
993
16:00
+22°C
3.5
77%
993
17:00
+22°C
6.8
78%
993
18:00
+20°C
5.9
86%
994
19:00
+19°C
6.4
89%
996
20:00
+19°C
10.4
90%
996
21:00
+17°C
4.6
92%
997
22:00
+17°C
5.2
94%
998
23:00
+17°C
12.3
95%
997
18 July 2026, Saturday
+15°C / +18°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+17°C
9.3
95%
997
01:00
+16°C
3
96%
999
02:00
+16°C
6.6
98%
998
03:00
+15°C
1.7
97%
998
04:00
+16°C
8
98%
997
05:00
+16°C
8.8
98%
997
06:00
+16°C
12.9
98%
996
07:00
+16°C
10.8
99%
996
08:00
+16°C
12.3
99%
997
09:00
+16°C
10.5
99%
998
10:00
+16°C
15.2
99%
998
11:00
+16°C
14.8
97%
999
12:00
+17°C
18.5
98%
998
13:00
+18°C
9.4
91%
999
14:00
+17°C
13.9
95%
998
15:00
+18°C
13.8
95%
999
16:00
+18°C
16.8
95%
997
17:00
+18°C
15.9
89%
998
18:00
+17°C
9.3
91%
999
19:00
+16°C
4.6
96%
1001
20:00
+16°C
10.6
96%
1001
21:00
+16°C
10.9
95%
1002
22:00
+16°C
10.8
96%
1002
23:00
+16°C
10.5
96%
1003
19 July 2026, Sunday
+13°C / +16°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+15°C
14.1
97%
1003
01:00
+15°C
13.4
97%
1003
02:00
+14°C
7.4
97%
1004
03:00
+14°C
12.1
97%
1003
04:00
+14°C
14.2
98%
1003
05:00
+14°C
12.3
97%
1003
06:00
+13°C
13.3
97%
1003
07:00
+13°C
13.3
96%
1003
08:00
+13°C
15.6
96%
1004
09:00
+13°C
13.6
94%
1004
10:00
+13°C
12.3
90%
1004
11:00
+13°C
12
87%
1004
12:00
+14°C
14.3
83%
1004
13:00
+15°C
14.8
80%
1003
14:00
+16°C
17
76%
1002
15:00
+16°C
15.6
76%
1001
16:00
+16°C
17.6
73%
1001
17:00
+16°C
16.6
72%
1001
18:00
+16°C
12.4
75%
1002
19:00
+15°C
16.6
77%
1002
20:00
+14°C
18.7
80%
1002
21:00
+14°C
15.9
81%
1002
22:00
+14°C
16.5
83%
1002
23:00
+13°C
16.8
85%
1002
20 July 2026, Monday
+10°C / +15°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+13°C
16.3
87%
1002
01:00
+13°C
14.3
89%
1001
02:00
+13°C
11.5
89%
1001
03:00
+13°C
9.6
91%
1000
04:00
+13°C
10.2
93%
1000
05:00
+12°C
12.4
95%
1001
06:00
+12°C
14
96%
1001
07:00
+12°C
12.7
97%
1002
08:00
+12°C
10
97%
1003
09:00
+12°C
9
96%
1003
10:00
+12°C
10.6
94%
1004
11:00
+12°C
14
91%
1004
12:00
+13°C
16.5
87%
1004
13:00
+14°C
17.1
81%
1004
14:00
+15°C
18.3
75%
1004
15:00
+15°C
20.6
71%
1005
16:00
+15°C
22.9
70%
1005
17:00
+14°C
25.2
69%
1006
18:00
+13°C
26.2
70%
1006
19:00
+12°C
25.6
71%
1007
20:00
+11°C
23.9
73%
1008
21:00
+11°C
21.4
74%
1009
22:00
+11°C
17.2
77%
1009
23:00
+10°C
12.3
80%
1010
21 July 2026, Tuesday
+8°C / +12°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+10°C
9
82%
1011
01:00
+10°C
9.1
84%
1011
02:00
+10°C
11
86%
1013
03:00
+10°C
12.5
87%
1013
04:00
+10°C
12.7
87%
1013
05:00
+9°C
13.9
86%
1013
06:00
+9°C
15.5
86%
1013
07:00
+9°C
15.1
86%
1014
08:00
+8°C
13.7
86%
1014
09:00
+8°C
13
85%
1015
10:00
+9°C
13.6
82%
1015
11:00
+10°C
14.8
78%
1015
12:00
+10°C
15.3
74%
1015
13:00
+11°C
14.7
72%
1014
14:00
+12°C
13.3
70%
1014
15:00
+12°C
12.1
69%
1014
16:00
+12°C
10.7
67%
1014
17:00
+12°C
9.4
66%
1014
18:00
+12°C
8.2
67%
1014
19:00
+12°C
6.9
70%
1015
20:00
+11°C
5.9
74%
1016
21:00
+11°C
5.5
78%
1016
22:00
+10°C
6.6
80%
1017
23:00
+10°C
8.5
80%
1017
22 July 2026, Wednesday
+7°C / +14°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+9°C
9.5
82%
1017
01:00
+8°C
8.6
85%
1017
02:00
+8°C
6.7
89%
1017
03:00
+7°C
5.4
91%
1017
04:00
+10°C
10.7
84%
1014
05:00
+10°C
10.9
85%
1014
06:00
+10°C
10.9
86%
1013
07:00
+10°C
11
87%
1013
08:00
+10°C
11.1
87%
1013
09:00
+10°C
11.1
86%
1012
10:00
+11°C
10.8
83%
1012
11:00
+11°C
10.3
80%
1012
12:00
+12°C
10.1
76%
1011
13:00
+13°C
9.7
72%
1011
14:00
+14°C
9.5
70%
1010
15:00
+14°C
9.1
69%
1010
16:00
+14°C
8.9
70%
1010
17:00
+14°C
8.8
73%
1010
18:00
+13°C
8.8
78%
1010
19:00
+12°C
8.9
83%
1010
20:00
+11°C
8.8
88%
1010
21:00
+11°C
8.5
91%
1010
22:00
+11°C
7.5
93%
1010
23:00
+11°C
6.2
93%
1010
23 July 2026, Thursday
+10°C / +16°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+11°C
5
92%
1010
01:00
+11°C
4.4
91%
1010
02:00
+11°C
4.5
90%
1010
03:00
+11°C
5.2
90%
1010
04:00
+10°C
5.8
90%
1011
05:00
+10°C
6.6
91%
1011
06:00
+10°C
7.2
92%
1011
07:00
+10°C
7.8
93%
1011
08:00
+10°C
8.2
92%
1011
09:00
+10°C
8.2
89%
1011
10:00
+11°C
8
84%
1011
11:00
+12°C
7.7
77%
1010
12:00
+14°C
7.1
70%
1010
13:00
+15°C
6.7
64%
1010
14:00
+16°C
6.3
59%
1010
15:00
+16°C
6
58%
1010
16:00
+16°C
5.8
59%
1010
17:00
+15°C
5.8
62%
1010
18:00
+14°C
5.6
68%
1011
19:00
+13°C
5.5
74%
1011
20:00
+12°C
5.4
80%
1011
21:00
+11°C
5.1
85%
1012
22:00
+10°C
4.8
87%
1012
23:00
+10°C
4.3
89%
1012
24 July 2026, Friday
+8°C / +18°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+9°C
3.8
90%
1012
01:00
+9°C
3.5
91%
1012
02:00
+9°C
3.4
92%
1012
03:00
+9°C
3.6
92%
1012
04:00
+9°C
4.2
94%
1012
05:00
+8°C
4.7
96%
1012
06:00
+8°C
5.4
98%
1012
07:00
+8°C
6.1
98%
1013
08:00
+9°C
6.8
98%
1013
09:00
+9°C
7.2
96%
1012
10:00
+10°C
7.7
91%
1012
11:00
+12°C
8.9
84%
1011
12:00
+14°C
10.6
76%
1010
13:00
+15°C
12.5
70%
1009
14:00
+17°C
14
65%
1009
15:00
+17°C
14.4
63%
1008
16:00
+18°C
13.6
64%
1008
17:00
+17°C
11.8
66%
1008
18:00
+16°C
9.6
71%
1008
19:00
+15°C
7.4
76%
1008
20:00
+15°C
5.5
81%
1008
21:00
+14°C
4.2
84%
1008
22:00
+14°C
3
86%
1009
23:00
+14°C
1.3
87%
1009
25 July 2026, Saturday
+13°C / +20°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+13°C
1.4
88%
1009
01:00
+13°C
3.2
89%
1009
02:00
+13°C
4.9
89%
1009
03:00
+13°C
6
90%
1009
04:00
+13°C
6.5
91%
1009
05:00
+13°C
6.6
93%
1010
06:00
+13°C
6.4
95%
1010
07:00
+13°C
5.9
95%
1010
08:00
+13°C
5.6
95%
1010
09:00
+13°C
5.3
93%
1010
10:00
+14°C
5
88%
1010
11:00
+15°C
4.5
80%
1010
12:00
+16°C
4.1
72%
1010
13:00
+18°C
3.7
65%
1010
14:00
+19°C
3.6
61%
1010
15:00
+20°C
3.8
59%
1010
16:00
+19°C
4.2
60%
1010
17:00
+19°C
5
63%
1010
18:00
+18°C
6
68%
1011
19:00
+17°C
7.1
74%
1011
20:00
+17°C
8.1
80%
1011
21:00
+16°C
8.7
84%
1011
22:00
+16°C
8.9
87%
1011
23:00
+15°C
9
89%
1011
26 July 2026, Sunday
+12°C / +20°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+15°C
9
90%
1011
01:00
+14°C
8.8
91%
1011
02:00
+14°C
8.5
92%
1011
03:00
+14°C
8.5
93%
1011
04:00
+13°C
8.3
94%
1011
05:00
+13°C
8.1
96%
1011
06:00
+13°C
7.8
97%
1010
07:00
+12°C
7.4
97%
1010
08:00
+12°C
7.1
97%
1010
09:00
+13°C
7
96%
1009
10:00
+13°C
6.8
92%
1009
11:00
+15°C
6.4
86%
1008
12:00
+16°C
6.2
80%
1007
13:00
+18°C
6
75%
1007
14:00
+19°C
6
72%
1006
15:00
+20°C
6
70%
1006
16:00
+20°C
6.1
71%
1006
17:00
+19°C
6.7
73%
1006
18:00
+18°C
7.3
77%
1006
19:00
+17°C
7.8
81%
1007
20:00
+16°C
8.3
85%
1007
21:00
+16°C
8.3
89%
1007
22:00
+15°C
8
91%
1007
23:00
+15°C
7.3
93%
1007
27 July 2026, Monday
+12°C / +18°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+14°C
6.5
94%
1007
01:00
+14°C
5.6
95%
1007
02:00
+13°C
5.1
95%
1006
03:00
+13°C
4.9
96%
1006
04:00
+13°C
5.2
97%
1006
05:00
+12°C
6.1
98%
1006
06:00
+12°C
7.3
100%
1007
07:00
+12°C
8.4
100%
1007
08:00
+12°C
9.6
100%
1007
09:00
+12°C
10.6
97%
1007
10:00
+13°C
11.6
92%
1007
11:00
+14°C
12.6
84%
1006
12:00
+15°C
13.6
76%
1006
13:00
+16°C
14.5
70%
1006
14:00
+17°C
15.1
65%
1006
15:00
+18°C
15.1
63%
1006
16:00
+18°C
14.8
64%
1006
17:00
+17°C
13.8
68%
1006
18:00
+16°C
12.6
73%
1007
19:00
+15°C
11.4
79%
1008
20:00
+14°C
10.3
86%
1008
21:00
+13°C
9.6
90%
1009
22:00
+12°C
9.1
93%
1009
23:00
+12°C
8.8
94%
1010
28 July 2026, Tuesday
+6°C / +14°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+12°C
8.7
95%
1010
01:00
+11°C
8.9
95%
1011
02:00
+11°C
9.2
95%
1011
03:00
+11°C
9.8
95%
1012
04:00
+11°C
10.6
96%
1012
05:00
+11°C
11.6
97%
1013
06:00
+10°C
13
99%
1014
07:00
+10°C
14.4
99%
1015
08:00
+10°C
15.5
97%
1016
09:00
+10°C
16.7
94%
1017
10:00
+11°C
17.4
86%
1018
11:00
+12°C
18.3
77%
1018
12:00
+13°C
19
67%
1018
13:00
+13°C
19.4
58%
1018
14:00
+14°C
19.5
53%
1019
15:00
+14°C
19.3
49%
1019
16:00
+14°C
18.4
49%
1020
17:00
+13°C
16.9
51%
1021
18:00
+12°C
15.2
54%
1022
19:00
+10°C
13.3
58%
1023
20:00
+9°C
11.7
62%
1024
21:00
+8°C
10.4
66%
1025
22:00
+7°C
9.5
68%
1025
23:00
+6°C
8.9
71%
1026
29 July 2026, Wednesday
+4°C / +12°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+5°C
8.1
74%
1026
01:00
+5°C
7.5
76%
1027
02:00
+4°C
6.8
78%
1027
03:00
+4°C
5.9
80%
1027
04:00
+4°C
5
82%
1027
05:00
+4°C
4.1
84%
1027
06:00
+4°C
4
86%
1027
07:00
+4°C
4.3
86%
1026
08:00
+5°C
5.1
86%
1026
09:00
+5°C
5.8
83%
1026
10:00
+6°C
6.5
76%
1025
11:00
+8°C
7.7
67%
1024
12:00
+9°C
9.1
59%
1024
13:00
+10°C
10.7
51%
1023
14:00
+11°C
12.1
46%
1022
15:00
+12°C
12.9
44%
1021
16:00
+12°C
13
45%
1021
17:00
+12°C
12.6
48%
1020
18:00
+11°C
12.1
53%
1020
19:00
+10°C
11.6
58%
1019
20:00
+9°C
11.2
64%
1019
21:00
+8°C
10.7
69%
1019
22:00
+8°C
10.1
72%
1019
23:00
+7°C
9.4
75%
1019


Climate Characteristics of Rosario

General Overview

Rosario features a humid subtropical climate. The city enjoys moderate temperatures throughout much of the year but is known for hot, very humid summers and relatively short, mild winters. Its location on the banks of the Paraná River contributes to high humidity and frequent mists, especially during autumn and winter.

Summer and Rainy Season (November to March)

Summer in Rosario is very hot and often oppressive due to high humidity. Daytime temperatures range between 30°C and 32°C (86-90°F), though heatwaves can easily push them above 35°C (95°F). This is the wettest season, with most rainfall occurring as intense and sudden afternoon or evening thunderstorms.

Winter Season (June to August)

Winter in Rosario is mild and quite pleasant. Daytime temperatures range from 16°C to 18°C (61-64°F), while nighttime lows drop to 7°C (45°F) on average. Snow is an extremely rare event in Rosario, but frost may occur in the early mornings at the peak of the season. Sunny and clear days are very common in winter.

Transition Seasons (April-May and September-October)

Autumn and spring are considered the most beautiful times to visit the city. The weather is balanced and very comfortable for activities along the river (around 22°C to 24°C / 72-75°F). In spring, nature blooms and the air is fresh, while autumn brings clear skies and pleasant evenings.

 

 

 

Weather in Rosario by Month

January

Peak of summer. Very hot and humid. 32°C (90°F) daytime and 20°C (68°F) at night. Sudden thunderstorms are common.

February

Still hot and humid (30°C/86°F daytime). Many sunny days allowing for river beach activities.

March

Start of autumn. Warm and pleasant (28°C/82°F daytime). Humidity begins to decrease gradually.

April

One of the best months. Clear days and a comfortable temperature of 24°C (75°F) daytime.

May

Cool and pleasant autumn (20°C/68°F daytime). Nights become significantly cooler (10°C/50°F).

June

Start of winter. Mild and cool (16°C/61°F daytime and 8°C/46°F at night). Morning mists common near the river.

July

The coldest month. 16°C (61°F) daytime and 7°C (45°F) at night. Mostly sunny days.

August

Slight warming (19°C/66°F daytime). Mostly dry and clear weather.

September

Start of spring. 21°C (70°F) daytime. Renewal and blooming throughout the city.

October

A wonderful month. 25°C (77°F) daytime. Ideal weather for tours and outdoor activities.

November

Warm and wetter spring (28°C/82°F daytime). Humidity rises toward summer.

December

Start of summer. Hot (30°C/86°F daytime). Vibrant city atmosphere leading up to the holidays.

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