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Weather in Guaratinguetá for September 2025

Your guide to Guaratinguetá weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Guaratinguetá is cooler than usual, with temperatures averaging 29.2 °C, this is -3.1 °C below the typical seasonal average.

  • The forecast for the next days in Guaratinguetá predicts a temperature of 26.9 °C, which is cooler than the historical average.

  • In general, the average temperature in Guaratinguetá at the beginning of September is 31.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.7 °C by the end of September.

    • Rain 🌧️

  • With an average of 4 rainy days, Guaratinguetá experiences minimal rainfall in September.

Average dry days
26
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
34°/14°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
52 %
Avg humidity

Guaratinguetá Weather September

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

Temperatures trend during September in Guaratinguetá

See the weather trend as well as the moving average line

September weather in Guaratinguetá day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 31° /11° 0 mm 8
2 Sept. Sunny
Sunny
 30° /12° 0 mm 8
3 Sept. Sunny
Sunny
 32° /9° 0 mm 9
4 Sept. Sunny
Sunny
 33° /11° 0 mm 10
5 Sept. Partly cloudy
Partly cloudy
 34° /12° 0 mm 10
6 Sept. Partly cloudy
Partly cloudy
 29° /13° 0 mm 8
7 Sept. Sunny
Sunny
 31° /13° 0 mm 9
8 Sept. Sunny
Sunny
 33° /14° 0 mm 9
9 Sept. Sunny
Sunny
 35° /13° 0 mm 9
10 Sept. Sunny
Sunny
 33° /11° 0 mm 9
11 Sept. Overcast
Overcast
 35° /11° 0 mm 9
12 Sept. Sunny
Sunny
 33° /12° 0 mm 9
13 Sept. Sunny
Sunny
 30° /14° 0.2 mm 8
14 Sept. Sunny
Sunny
 34° /13° 0 mm 9
15 Sept. Mist
Mist
 33° /12° 0 mm 8
16 Sept. Patchy rain possible
Patchy rain possible
 32° /12° 0.4 mm 2
17 Sept. Partly cloudy
Partly cloudy
 32° /13° 0 mm 2.3
18 Sept. Partly cloudy
Partly cloudy
 34° /14° 0 mm 2.4
19 Sept. Patchy rain possible
Patchy rain possible
 36° /14° 0.3 mm 2.2
20 Sept. Patchy rain possible
Patchy rain possible
 37° /17° 0.2 mm 0.3
21 Sept. Sunny
Sunny
 38° /19° 0 mm 8
22 Sept. Patchy rain possible
Patchy rain possible
 37° /21° 1.3 mm 7
23 Sept. Patchy rain possible
Patchy rain possible
 21° /11° 0.6 mm 5
24 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 0.1 mm 5
25 Sept. Moderate rain
Moderate rain
 14° /13° 6.7 mm 4
26 Sept. Moderate rain
Moderate rain
 13° /12° 8.2 mm 4
27 Sept. Patchy rain possible
Patchy rain possible
 15° /12° 2.3 mm 4
28 Sept. Patchy rain possible
Patchy rain possible
 23° /12° 0.1 mm 5
29 Sept. Patchy rain possible
Patchy rain possible
 24° /13° 0.2 mm 5
30 Sept. Mist
Mist
 35° /13° 0 mm 9
Next
Important Notice
Our weather forecast for Guaratinguetá 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 Guaratinguetá forecast closer to your planned date for the most up-to-date weather information.
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Guaratinguetá in September - FAQ

What are the expected maximum and minimum temperatures in Guaratinguetá during September?
Expect warm days with temperatures around 34°, cooling to mild conditions of 14° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Guaratinguetá during September?
Expect minimal rainfall in Guaratinguetá during September, with a total of 11.9 mm over approximately 4 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Guaratinguetá during September?
The average wind speed in Guaratinguetá during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Guaratinguetá

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

UV exposure in Guaratinguetá during September

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

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Location coordinates Where is Guaratinguetá?

Get accurate weather forecasts for Guaratinguetá, located at latitude -22.816 and longitude -45.193. Stay updated with localized weather information tailored for Guaratinguetá.

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