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Weather in Guaratinguetá for September 2026

Your guide to Guaratinguetá weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Guaratinguetá has been significantly cooler than historical averages by 7.3 °C, with average temperature of 21.8 °C.

  • The forecast for the next days in Guaratinguetá predicts a temperature of 24.5 °C, which is cooler than the historical average.

  • In general, the average temperature in Guaratinguetá at the beginning of September is 28.4 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 28.1 °C by the end of September.

    • Rain 🌧️

  • With an average of 5 rainy days, Guaratinguetá experiences minimal rainfall in September.

Average dry days
25
Dry days
Average rainy days
5
Rainy days
Average snowy days
0
Snow days
Average temperatures
32°/13°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
58 %
Avg humidity

Guaratinguetá Weather September

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

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
 29° /12° 7.1 mm 6
2 Sept. Patchy rain possible
Patchy rain possible
 27° /11° 0.8 mm 7
3 Sept. Sunny
Sunny
 30° /10° 0 mm 8
4 Sept. Sunny
Sunny
 32° /13° 0 mm 9
5 Sept. Sunny
Sunny
 32° /13° 0.1 mm 8
6 Sept. Partly cloudy
Partly cloudy
 25° /12° 2.8 mm 6
7 Sept. Sunny
Sunny
 24° /11° 3.6 mm 6
8 Sept. Mist
Mist
 29° /12° 0.5 mm 7
9 Sept. Sunny
Sunny
 31° /14° 11.2 mm 7
10 Sept. Sunny
Sunny
 30° /13° 11.3 mm 6
11 Sept. Overcast
Overcast
 32° /13° 3.6 mm 7
12 Sept. Sunny
Sunny
 30° /13° 3.1 mm 7
13 Sept. Sunny
Sunny
 27° /14° 3.7 mm 6
14 Sept. Sunny
Sunny
 29° /13° 8 mm 6
15 Sept. Mist
Mist
 28° /12° 1.8 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
 19° /12° 1.3 mm 7.4
17 Sept. Patchy rain possible
Patchy rain possible
 18° /12° 0.6 mm 7
18 Sept. Overcast
Overcast
 21° /12° 0.1 mm 8.9
19 Sept. Overcast
Overcast
 23° /13° 0 mm 8.7
20 Sept. Overcast
Overcast
 27° /14° 10.9 mm 10.5
21 Sept. Overcast
Overcast
 24° /19° 0.1 mm 6
22 Sept. Overcast
Overcast
 26° /19° 0.1 mm 8
23 Sept. Light rain shower
Light rain shower
 24° /17° 6.8 mm 6
24 Sept. Sunny
Sunny
 25° /18° 5 mm 7
25 Sept. Sunny
Sunny
 27° /20° 0 mm 8
26 Sept. Sunny
Sunny
 31° /21° 0 mm 9
27 Sept. Overcast
Overcast
 32° /17° 0 mm 9
28 Sept. Light rain shower
Light rain shower
 26° /16° 7.6 mm 8
29 Sept. Patchy rain possible
Patchy rain possible
 20° /16° 2.6 mm 5
30 Sept. Mist
Mist
 36° /13° 0 mm 10
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 32°, cooling to mild conditions of 13° 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 13.7 mm over approximately 5 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 12 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 💧
Typically, Guaratinguetá has 5 rainy days in September with a total of 13.7 mm of rainfall.

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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