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Weather in Asunción for September 2025

Your guide to Asunción weather in September - trends and predictions

    Temperatures

  • The forecast for the first days of September 2025 in Asunción predicts a temperature of 31.6 °C, which is slightly above the historical average.

  • In general, the average temperature in Asunción at the beginning of September is 27.1 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 35 °C by the end of September.

    • Rain 🌧️

  • The climate of Asunción in September is notably wet, with an average of 12 rainy days, and a total of 73.2 mm of precipitation.

Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
34°/19°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
50 %
Avg humidity

Asunción Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
32°
2
Patchy rain possible
36°
3
Patchy rain possible
38°
4
Moderate rain
37°
5
Patchy rain possible
16°
6
Overcast
16°
7
Patchy rain possible
15°
8
Patchy rain possible
29°
9
Sunny
31°
10
Sunny
38°
11
Patchy rain possible
41°
12
Patchy rain possible
42°
13
Overcast
23°
14
Partly cloudy
22°
15
Sunny
27°
16
Sunny
33°
17
Sunny
37°
18
Sunny
37°
19
Partly cloudy
38°
20
Sunny
34°
21
Sunny
42°
22
Sunny
45°
23
Sunny
46°
24
Sunny
45°
25
Sunny
43°
26
Partly cloudy
34°
27
Patchy rain possible
22°
28
Overcast
29°
29
Cloudy
35°
30
Sunny
37°

Temperatures trend during September in Asunción

See the weather trend as well as the moving average line

September weather in Asunción day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 32° /19° 3.1 mm 1.5
2 Sept. Patchy rain possible
Patchy rain possible
 36° /19° 0.4 mm 1.2
3 Sept. Patchy rain possible
Patchy rain possible
 38° /20° 3.4 mm 0.2
4 Sept. Moderate rain
Moderate rain
 37° /21° 6.1 mm 7
5 Sept. Patchy rain possible
Patchy rain possible
 16° /13° 2 mm 5
6 Sept. Overcast
Overcast
 16° /12° 0 mm 4
7 Sept. Patchy rain possible
Patchy rain possible
 15° /11° 0.9 mm 4
8 Sept. Patchy rain possible
Patchy rain possible
 29° /12° 1.1 mm 6
9 Sept. Sunny
Sunny
 31° /18° 0 mm 7
10 Sept. Sunny
Sunny
 38° /19° 0 mm 8
11 Sept. Patchy rain possible
Patchy rain possible
 41° /25° 0.8 mm 8
12 Sept. Patchy rain possible
Patchy rain possible
 42° /23° 0.3 mm 8
13 Sept. Overcast
Overcast
 23° /14° 1 mm 6
14 Sept. Partly cloudy
Partly cloudy
 22° /14° 1.9 mm 6
15 Sept. Sunny
Sunny
 27° /12° 0.5 mm 8
16 Sept. Sunny
Sunny
 33° /14° 0 mm 9
17 Sept. Sunny
Sunny
 37° /19° 0 mm 9
18 Sept. Sunny
Sunny
 37° /19° 0.7 mm 9
19 Sept. Partly cloudy
Partly cloudy
 38° /20° 0.9 mm 10
20 Sept. Sunny
Sunny
 34° /20° 1.8 mm 9
21 Sept. Sunny
Sunny
 42° /22° 0.1 mm 10
22 Sept. Sunny
Sunny
 45° /27° 0 mm 11
23 Sept. Sunny
Sunny
 46° /27° 0 mm 12
24 Sept. Sunny
Sunny
 45° /28° 0 mm 11
25 Sept. Sunny
Sunny
 43° /24° 0 mm 10
26 Sept. Partly cloudy
Partly cloudy
 34° /16° 1.2 mm 9
27 Sept. Patchy rain possible
Patchy rain possible
 22° /12° 0.3 mm 6
28 Sept. Overcast
Overcast
 29° /12° 0 mm 7
29 Sept. Cloudy
Cloudy
 35° /18° 0 mm 9
30 Sept. Sunny
Sunny
 37° /21° 0 mm 10
Next
Important Notice
Our weather forecast for Asunción 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 Asunción forecast closer to your planned date for the most up-to-date weather information.
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Asunción in September - FAQ

What are the expected maximum and minimum temperatures in Asunción during September?
Expect warm days with temperatures around 34°, cooling to mild conditions of 19° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Asunción during September?
Moderate rainfall is anticipated in Asunción during September, with a total of 73.2 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Asunción during September?
The average wind speed in Asunción during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Asunción

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

UV exposure in Asunción during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Asunción?

Get accurate weather forecasts for Asunción, located at latitude -25.286 and longitude -57.647. Stay updated with localized weather information tailored for Asunción.

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