Rosario monthly weather forecast
Monthly weather forecast for Rosario. ℃ Average temperatures % Humidity, precipitation ️ Sunrise and sunset ️ Wind direction and speed
22 May 2026, Friday
+4°C / +12°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+6°C
6.4
85%
1028
01:00
+6°C
5.8
87%
1028
02:00
+6°C
6
89%
1028
03:00
+5°C
6.2
90%
1028
04:00
+5°C
5.7
91%
1028
05:00
+4°C
5.3
92%
1027
06:00
+4°C
5.2
93%
1027
07:00
+4°C
5.3
93%
1027
08:00
+4°C
4.8
94%
1027
09:00
+6°C
6.6
91%
1028
10:00
+7°C
4.9
82%
1028
11:00
+9°C
5.3
75%
1028
12:00
+11°C
5.9
68%
1028
13:00
+12°C
5.6
61%
1027
14:00
+12°C
5.4
57%
1026
15:00
+12°C
4.9
56%
1026
16:00
+12°C
5.3
57%
1025
17:00
+12°C
6.3
59%
1025
18:00
+10°C
4.2
71%
1025
19:00
+9°C
3.5
78%
1025
20:00
+8°C
2.5
81%
1025
21:00
+7°C
2.1
85%
1025
22:00
+7°C
3.5
87%
1026
23:00
+6°C
5.6
89%
1026
23 May 2026, Saturday
+4°C / +14°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+6°C
5.9
88%
1026
01:00
+6°C
6.1
88%
1026
02:00
+5°C
5.4
90%
1026
03:00
+5°C
4.9
91%
1025
04:00
+5°C
4.5
92%
1025
05:00
+5°C
5.8
94%
1024
06:00
+4°C
6.3
94%
1024
07:00
+4°C
5.9
94%
1024
08:00
+4°C
6.2
95%
1025
09:00
+6°C
8.4
92%
1025
10:00
+8°C
6.3
86%
1025
11:00
+10°C
6.5
76%
1025
12:00
+12°C
8.2
65%
1025
13:00
+13°C
8.7
59%
1024
14:00
+13°C
8.3
57%
1023
15:00
+14°C
8.1
57%
1022
16:00
+13°C
8
58%
1021
17:00
+13°C
8.8
61%
1021
18:00
+11°C
5.8
74%
1021
19:00
+10°C
7
79%
1021
20:00
+9°C
6.7
81%
1021
21:00
+8°C
5.8
82%
1021
22:00
+8°C
6.4
85%
1021
23:00
+8°C
7.7
86%
1021
24 May 2026, Sunday
+6°C / +16°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+8°C
8.3
87%
1021
01:00
+8°C
7.8
88%
1020
02:00
+8°C
7.5
87%
1020
03:00
+7°C
6.1
89%
1020
04:00
+7°C
6.6
92%
1019
05:00
+6°C
6
94%
1019
06:00
+6°C
5
95%
1019
07:00
+7°C
7.4
96%
1019
08:00
+7°C
6.5
97%
1019
09:00
+8°C
8.2
96%
1020
10:00
+10°C
6.1
91%
1020
11:00
+12°C
6.1
82%
1020
12:00
+14°C
7.2
74%
1019
13:00
+15°C
10.8
60%
1019
14:00
+16°C
9.4
58%
1018
15:00
+16°C
8.8
59%
1017
16:00
+15°C
8.9
62%
1017
17:00
+15°C
8
63%
1017
18:00
+13°C
0.4
73%
1017
19:00
+11°C
2
79%
1017
20:00
+10°C
4.7
84%
1017
21:00
+10°C
4.1
86%
1017
22:00
+9°C
4.8
87%
1017
23:00
+9°C
5.3
89%
1017
25 May 2026, Monday
+7°C / +16°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+9°C
3.8
89%
1018
01:00
+9°C
4.5
91%
1018
02:00
+9°C
4.9
93%
1018
03:00
+9°C
5
94%
1017
04:00
+8°C
4.7
95%
1017
05:00
+8°C
1.8
97%
1017
06:00
+8°C
1
98%
1017
07:00
+7°C
1.9
99%
1018
08:00
+7°C
4
100%
1018
09:00
+8°C
4
99%
1019
10:00
+10°C
3.9
98%
1019
11:00
+12°C
3.3
93%
1020
12:00
+13°C
1.5
89%
1020
13:00
+13°C
1.5
87%
1020
14:00
+15°C
2.1
81%
1019
15:00
+16°C
5.6
75%
1018
16:00
+16°C
7.1
72%
1018
17:00
+16°C
6.9
73%
1018
18:00
+14°C
3.1
83%
1018
19:00
+13°C
1.7
87%
1019
20:00
+11°C
2.1
91%
1019
21:00
+11°C
2.7
94%
1020
22:00
+10°C
3.5
96%
1020
23:00
+9°C
4.2
98%
1021
26 May 2026, Tuesday
+7°C / +16°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+9°C
4.8
99%
1021
01:00
+8°C
5
100%
1021
02:00
+8°C
5.2
100%
1021
03:00
+7°C
5.5
100%
1021
04:00
+7°C
5.9
100%
1021
05:00
+7°C
6.4
100%
1020
06:00
+7°C
6.6
99%
1020
07:00
+7°C
6.3
99%
1021
08:00
+7°C
5.8
98%
1021
09:00
+7°C
4.8
97%
1022
10:00
+8°C
3.2
96%
1022
11:00
+10°C
1.8
95%
1023
12:00
+12°C
1.8
91%
1023
13:00
+13°C
1.6
83%
1022
14:00
+15°C
0.7
72%
1021
15:00
+16°C
0.6
67%
1021
16:00
+15°C
1.5
69%
1021
17:00
+14°C
2.7
74%
1020
18:00
+13°C
3.6
80%
1020
19:00
+12°C
3.8
84%
1020
20:00
+11°C
3.6
87%
1021
21:00
+10°C
3.5
90%
1021
22:00
+10°C
3.5
91%
1021
23:00
+9°C
3.6
91%
1021
27 May 2026, Wednesday
+7°C / +18°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+9°C
3.5
93%
1021
01:00
+9°C
3.1
95%
1021
02:00
+8°C
2.7
97%
1020
03:00
+8°C
2.4
99%
1020
04:00
+7°C
2.6
100%
1020
05:00
+7°C
3.1
100%
1019
06:00
+7°C
3.3
100%
1019
07:00
+7°C
3.6
100%
1020
08:00
+7°C
4
100%
1020
09:00
+7°C
4.3
98%
1021
10:00
+9°C
4.3
94%
1021
11:00
+11°C
3.8
90%
1022
12:00
+13°C
3.7
86%
1022
13:00
+15°C
4.1
79%
1021
14:00
+17°C
4.6
72%
1021
15:00
+18°C
4.8
68%
1020
16:00
+17°C
4.1
71%
1020
17:00
+16°C
3.9
78%
1020
18:00
+15°C
4.4
84%
1021
19:00
+14°C
5.3
88%
1021
20:00
+13°C
6.1
91%
1022
21:00
+12°C
6.6
93%
1022
22:00
+11°C
6.6
94%
1022
23:00
+11°C
6.5
94%
1022
28 May 2026, Thursday
+8°C / +18°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+10°C
6.5
94%
1022
01:00
+10°C
5.8
96%
1022
02:00
+9°C
4.7
98%
1022
03:00
+9°C
4
100%
1022
04:00
+9°C
6.1
98%
1020
05:00
+8°C
5.7
99%
1021
06:00
+8°C
5
100%
1021
07:00
+8°C
4.5
100%
1021
08:00
+8°C
4.1
100%
1021
09:00
+9°C
4
99%
1021
10:00
+10°C
4.1
94%
1020
11:00
+11°C
4.6
87%
1020
12:00
+13°C
5.3
80%
1020
13:00
+15°C
6.1
73%
1019
14:00
+17°C
6.5
69%
1019
15:00
+18°C
6.9
67%
1018
16:00
+18°C
6.8
68%
1018
17:00
+17°C
6.7
71%
1018
18:00
+16°C
6.5
76%
1018
19:00
+14°C
6.5
82%
1018
20:00
+13°C
6.6
87%
1018
21:00
+12°C
6.6
91%
1018
22:00
+12°C
6.4
94%
1018
23:00
+11°C
5.7
95%
1018
29 May 2026, Friday
+9°C / +18°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+10°C
5
96%
1018
01:00
+10°C
4.4
97%
1018
02:00
+10°C
4.1
97%
1019
03:00
+9°C
3.9
98%
1019
04:00
+9°C
4.3
99%
1019
05:00
+9°C
4.9
100%
1019
06:00
+9°C
5.9
100%
1019
07:00
+9°C
7
100%
1019
08:00
+9°C
7.7
100%
1019
09:00
+10°C
8.2
99%
1019
10:00
+11°C
8.3
93%
1019
11:00
+12°C
8.2
83%
1019
12:00
+14°C
8
73%
1019
13:00
+16°C
7.7
65%
1018
14:00
+17°C
7.6
60%
1018
15:00
+18°C
7.4
57%
1018
16:00
+18°C
7.6
58%
1018
17:00
+17°C
8.3
60%
1018
18:00
+16°C
9.6
65%
1018
19:00
+15°C
11.1
71%
1019
20:00
+14°C
12.4
77%
1019
21:00
+13°C
13.1
81%
1019
22:00
+13°C
12.7
85%
1020
23:00
+12°C
11.8
88%
1020
30 May 2026, Saturday
+8°C / +15°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+11°C
10.3
90%
1020
01:00
+10°C
8.8
92%
1020
02:00
+10°C
7.5
93%
1020
03:00
+9°C
6.7
94%
1021
04:00
+9°C
6.7
96%
1021
05:00
+9°C
7
98%
1021
06:00
+9°C
7.8
99%
1022
07:00
+8°C
8.4
99%
1022
08:00
+9°C
9.2
98%
1022
09:00
+9°C
9.4
96%
1022
10:00
+10°C
9.4
91%
1022
11:00
+11°C
9.2
83%
1022
12:00
+12°C
8.9
76%
1022
13:00
+14°C
8.5
69%
1022
14:00
+15°C
8.3
64%
1022
15:00
+15°C
8.2
62%
1022
16:00
+15°C
8.3
62%
1022
17:00
+15°C
8.5
64%
1022
18:00
+14°C
8.9
68%
1023
19:00
+13°C
9.1
72%
1023
20:00
+12°C
9.2
77%
1023
21:00
+11°C
9.2
80%
1023
22:00
+11°C
8.8
83%
1023
23:00
+11°C
8
85%
1023
31 May 2026, Sunday
+9°C / +15°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+10°C
7.1
87%
1023
01:00
+10°C
6.4
89%
1023
02:00
+10°C
5.6
91%
1023
03:00
+9°C
5.1
92%
1023
04:00
+9°C
4.8
93%
1023
05:00
+9°C
4.9
93%
1023
06:00
+9°C
5.2
94%
1023
07:00
+9°C
5.4
93%
1023
08:00
+10°C
5.6
92%
1023
09:00
+10°C
5.6
89%
1023
10:00
+11°C
5.2
83%
1023
11:00
+12°C
4.8
76%
1022
12:00
+13°C
4.1
69%
1022
13:00
+14°C
3.3
63%
1021
14:00
+15°C
2.9
58%
1021
15:00
+15°C
2.5
56%
1020
16:00
+15°C
2.3
58%
1020
17:00
+14°C
2.3
61%
1020
18:00
+13°C
2.5
66%
1020
19:00
+12°C
3.1
72%
1020
20:00
+11°C
3.6
78%
1020
21:00
+10°C
3.6
83%
1020
22:00
+10°C
3.5
86%
1020
23:00
+9°C
2.8
87%
1020
01 June 2026, Monday
+4°C / +15°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+9°C
2.1
88%
1020
01:00
+9°C
1.4
89%
1020
02:00
+9°C
0.8
89%
1020
03:00
+9°C
0.8
90%
1020
04:00
+8°C
0.9
92%
1020
05:00
+7°C
0.9
95%
1020
06:00
+6°C
0.7
98%
1020
07:00
+5°C
0.7
100%
1021
08:00
+4°C
0.9
100%
1021
09:00
+5°C
1.3
99%
1021
10:00
+6°C
2.1
93%
1021
11:00
+8°C
3
85%
1021
12:00
+10°C
4.3
76%
1021
13:00
+12°C
5.4
69%
1021
14:00
+14°C
6.3
64%
1021
15:00
+15°C
6.9
62%
1021
16:00
+15°C
7
63%
1021
17:00
+14°C
6.9
66%
1022
18:00
+13°C
6.5
71%
1022
19:00
+12°C
5.9
77%
1022
20:00
+10°C
5.8
83%
1023
21:00
+10°C
5.7
87%
1023
22:00
+9°C
6
89%
1024
23:00
+9°C
6.9
91%
1024
02 June 2026, Tuesday
+7°C / +13°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+10°C
7.6
91%
1024
01:00
+10°C
8.5
91%
1025
02:00
+10°C
9.2
91%
1025
03:00
+10°C
9.5
91%
1025
04:00
+10°C
9.5
92%
1026
05:00
+9°C
9.4
93%
1026
06:00
+8°C
9.2
95%
1027
07:00
+7°C
8.8
96%
1027
08:00
+7°C
8.3
96%
1028
09:00
+7°C
7.7
94%
1028
10:00
+8°C
7.2
88%
1028
11:00
+9°C
6.6
80%
1027
12:00
+10°C
6.2
71%
1027
13:00
+12°C
6.1
65%
1027
14:00
+13°C
6.3
60%
1026
15:00
+13°C
6.4
58%
1026
16:00
+13°C
6.4
59%
1026
17:00
+12°C
6.1
63%
1026
18:00
+11°C
5.6
69%
1026
19:00
+10°C
5
76%
1026
20:00
+8°C
4.6
83%
1026
21:00
+8°C
4.4
88%
1026
22:00
+7°C
4.3
91%
1026
23:00
+7°C
4.1
93%
1026
03 June 2026, Wednesday
+6°C / +14°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+6°C
4.1
94%
1026
01:00
+6°C
4.6
95%
1026
02:00
+6°C
5
95%
1026
03:00
+6°C
5.5
95%
1026
04:00
+6°C
6
96%
1027
05:00
+6°C
6.5
98%
1027
06:00
+6°C
7.2
98%
1027
07:00
+6°C
7.8
99%
1028
08:00
+6°C
8.2
97%
1028
09:00
+7°C
8.5
94%
1028
10:00
+8°C
8.6
88%
1028
11:00
+9°C
9
80%
1027
12:00
+11°C
9.3
72%
1027
13:00
+12°C
9.8
65%
1026
14:00
+13°C
10
60%
1026
15:00
+14°C
9.8
58%
1026
16:00
+14°C
9.1
59%
1026
17:00
+13°C
7.7
62%
1026
18:00
+13°C
6.3
67%
1026
19:00
+12°C
5.6
73%
1026
20:00
+11°C
5.6
78%
1026
21:00
+10°C
5.7
83%
1026
22:00
+10°C
5.5
86%
1026
23:00
+9°C
5.2
88%
1026
04 June 2026, Thursday
+7°C / +16°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+8°C
4.9
89%
1025
01:00
+8°C
4.9
90%
1025
02:00
+8°C
5.3
91%
1025
03:00
+7°C
5.9
92%
1025
04:00
+7°C
6.4
93%
1025
05:00
+7°C
6.9
95%
1025
06:00
+7°C
7.4
97%
1025
07:00
+7°C
8
98%
1025
08:00
+7°C
8.5
97%
1025
09:00
+8°C
8.8
94%
1024
10:00
+9°C
9.1
88%
1024
11:00
+10°C
9.3
80%
1023
12:00
+12°C
9.6
72%
1023
13:00
+14°C
9.7
64%
1022
14:00
+15°C
9.9
59%
1021
15:00
+16°C
9.9
57%
1021
16:00
+16°C
9.5
58%
1020
17:00
+15°C
8.6
61%
1020
18:00
+14°C
8
67%
1020
19:00
+12°C
7.7
73%
1020
20:00
+11°C
7.5
79%
1020
21:00
+10°C
7.4
84%
1019
22:00
+10°C
7
87%
1019
23:00
+10°C
6.5
89%
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.