Rosario hourly weather forecast

Hourly 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


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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