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Weather in Mendoza for September 2025

Your guide to Mendoza weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Mendoza is cooler than usual, with temperatures averaging 14.4 °C, this is -3.3 °C below the typical seasonal average.

  • The forecast for the upcoming days in Mendoza predicts a temperature of 20.7 °C, which is slightly above the historical average.

  • In general, the average temperature in Mendoza at the beginning of September is 16.3 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24 °C by the end of September.

    • Rain 🌧️

  • Precipitation in Mendoza during September is a rare event, with an average of fewer than 2 rainy days.

Average dry days
30
Dry days
Average rainy days
0
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/10°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
28 %
Avg humidity

Mendoza Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
17°
2
Sunny
22°
3
Sunny
13°
4
Sunny
13°
5
Partly cloudy
16°
6
Sunny
16°
7
Sunny
17°
8
Sunny
18°
9
Sunny
23°
10
Sunny
22°
11
Sunny
17°
12
Sunny
20°
13
Sunny
25°
14
Sunny
18°
15
Sunny
22°
16
Sunny
23°
17
Sunny
24°
18
Sunny
28°
19
Sunny
20°
20
Sunny
17°
21
Patchy rain possible
10°
22
Patchy rain possible
15°
23
Sunny
20°
24
Sunny
22°
25
Sunny
23°
26
Sunny
23°
27
Sunny
23°
28
Sunny
22°
29
Sunny
28°
30
Sunny
27°

Temperatures trend during September in Mendoza

See the weather trend as well as the moving average line

September weather in Mendoza day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 17° /5° 0 mm 6
2 Sept. Sunny
Sunny
 22° /9° 0 mm 7
3 Sept. Sunny
Sunny
 13° /6° 0 mm 5
4 Sept. Sunny
Sunny
 13° /6° 0 mm 5
5 Sept. Partly cloudy
Partly cloudy
 16° /7° 0 mm 6
6 Sept. Sunny
Sunny
 16° /8° 0 mm 6
7 Sept. Sunny
Sunny
 17° /9° 0 mm 6
8 Sept. Sunny
Sunny
 18° /10° 0 mm 6
9 Sept. Sunny
Sunny
 23° /11° 0 mm 7
10 Sept. Sunny
Sunny
 22° /11° 0 mm 7
11 Sept. Sunny
Sunny
 17° /9° 0 mm 6
12 Sept. Sunny
Sunny
 20° /10° 0 mm 7
13 Sept. Sunny
Sunny
 25° /12° 0 mm 1.6
14 Sept. Sunny
Sunny
 18° /10° 0 mm 1.7
15 Sept. Sunny
Sunny
 22° /10° 0 mm 1.7
16 Sept. Sunny
Sunny
 23° /13° 0 mm 1.9
17 Sept. Sunny
Sunny
 24° /15° 0 mm 0.1
18 Sept. Sunny
Sunny
 28° /15° 0 mm 7
19 Sept. Sunny
Sunny
 20° /15° 0 mm 6
20 Sept. Sunny
Sunny
 17° /11° 0 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
 10° /8° 2.7 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 15° /7° 1 mm 4
23 Sept. Sunny
Sunny
 20° /10° 0 mm 5
24 Sept. Sunny
Sunny
 22° /11° 0 mm 6
25 Sept. Sunny
Sunny
 23° /13° 0 mm 6
26 Sept. Sunny
Sunny
 23° /15° 0 mm 6
27 Sept. Sunny
Sunny
 23° /10° 0 mm 7
28 Sept. Sunny
Sunny
 22° /13° 0 mm 7
29 Sept. Sunny
Sunny
 28° /15° 0 mm 8
30 Sept. Sunny
Sunny
 27° /17° 0 mm 8
Next
Important Notice
Our weather forecast for Mendoza in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Mendoza forecast closer to your planned date for the most up-to-date weather information.
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Mendoza in September - FAQ

What are the expected maximum and minimum temperatures in Mendoza during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Mendoza during September?
Rainfall in Mendoza during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Mendoza during September?
The average wind speed in Mendoza during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Mendoza

Explore the daily rainfall trends and prepare for Mendozas September weather 💧

UV exposure in Mendoza during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Mendoza
Select a province for an accurate weather forecast
Departamento de Guaymallén

Quick links

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Location coordinates Where is Mendoza?

Get accurate weather forecasts for Mendoza, located at latitude -32.891 and longitude -68.827. Stay updated with localized weather information tailored for Mendoza.

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