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Weather in Bayamón for September 2026

Your guide to Bayamón weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Bayamón has been nearly identical to the historical average, with a temperature of 31.4 °C (showing only a slight deviation of 0 °C).

  • Expect cooler weather in the next days in Bayamón with the forecast suggesting a temperature of 30.6 °C, lower than the historical average.

  • In general, the average temperature in Bayamón at the beginning of September is 31.6 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 31.3 °C by the end of September.

    • Rain 🌧️

  • The climate of Bayamón in September is notably wet, with an average of 14 rainy days, and a total of 225.5 mm of precipitation.

Average dry days
16
Dry days
Average rainy days
14
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/26°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Bayamón Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Partly cloudy
32°
2
Patchy rain possible
31°
3
Patchy rain possible
32°
4
Partly cloudy
32°
5
Cloudy
31°
6
Overcast
32°
7
Heavy rain at times
31°
8
Patchy rain possible
31°
9
Patchy rain possible
31°
10
Patchy rain possible
31°
11
Light rain shower
31°
12
Partly cloudy
32°
13
Partly cloudy
31°
14
Partly cloudy
32°
15
Partly cloudy
32°
16
Partly cloudy
32°
17
Thundery outbreaks possible
30°
18
Patchy rain possible
31°
19
Partly cloudy
31°
20
Patchy rain possible
32°
21
Patchy rain possible
32°
22
Patchy rain possible
32°
23
Patchy rain possible
31°
24
Patchy rain possible
31°
25
Patchy rain possible
31°
26
Patchy rain possible
30°
27
Sunny
33°
28
Cloudy
32°
29
Patchy rain possible
31°
30
Patchy rain possible
31°

Temperatures trend during September in Bayamón

See the weather trend as well as the moving average line

September weather in Bayamón day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 32° /25° 4.2 mm 8
2 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 2.6 mm 7
3 Sept. Patchy rain possible
Patchy rain possible
 32° /25° 0.7 mm 9
4 Sept. Partly cloudy
Partly cloudy
 32° /25° 0.6 mm 7
5 Sept. Cloudy
Cloudy
 31° /26° 5.2 mm 6
6 Sept. Overcast
Overcast
 32° /25° 0.8 mm 6
7 Sept. Heavy rain at times
Heavy rain at times
 31° /25° 11.2 mm 7
8 Sept. Patchy rain possible
Patchy rain possible
 31° /26° 4.4 mm 7
9 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 7.4 mm 7
10 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 7.8 mm 6
11 Sept. Light rain shower
Light rain shower
 31° /25° 3.2 mm 6
12 Sept. Partly cloudy
Partly cloudy
 32° /25° 1 mm 7
13 Sept. Partly cloudy
Partly cloudy
 31° /25° 1.7 mm 7
14 Sept. Partly cloudy
Partly cloudy
 32° /25° 4.8 mm 6
15 Sept. Partly cloudy
Partly cloudy
 32° /25° 4.7 mm 6
16 Sept. Partly cloudy
Partly cloudy
 32° /26° 3.8 mm 6
17 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 30° /26° 13.8 mm 6
18 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 2.3 mm 6
19 Sept. Partly cloudy
Partly cloudy
 31° /25° 2.2 mm 6
20 Sept. Patchy rain possible
Patchy rain possible
 32° /25° 22.2 mm 6
21 Sept. Patchy rain possible
Patchy rain possible
 32° /25° 23.5 mm 6
22 Sept. Patchy rain possible
Patchy rain possible
 32° /25° 0.9 mm 7
23 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 11.9 mm 8
24 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 3.1 mm 8
25 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 24.8 mm 8
26 Sept. Patchy rain possible
Patchy rain possible
 30° /26° 19.6 mm 7
27 Sept. Sunny
Sunny
 33° /26° 0.8 mm 10.9
28 Sept. Cloudy
Cloudy
 32° /27° 1.8 mm 11
29 Sept. Patchy rain possible
Patchy rain possible
 31° /26° 1 mm 11.2
30 Sept. Patchy rain possible
Patchy rain possible
 31° /26° 1.7 mm 10.5
Next
Important Notice
Our weather forecast for Bayamón 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 Bayamón forecast closer to your planned date for the most up-to-date weather information.
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Bayamón in September - FAQ

What are the expected maximum and minimum temperatures in Bayamón during September?
During September, expect a variety of temperatures with highs around 31° and lows near 26°, suitable for diverse activities and preferences.

How much rainfall should be expected in Bayamón during September?
Significant rainfall exceeding 225.5 mm is expected in Bayamón during September, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Bayamón during September?
The average wind speed in Bayamón during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Bayamón

Explore the daily rainfall trends and prepare for Bayamóns September weather 💧
Typically, Bayamón has 14 rainy days in September with a total of 225.5 mm of rainfall.

UV exposure in Bayamón during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for Bayamón, located at latitude 18.399 and longitude -66.156. Stay updated with localized weather information tailored for Bayamón.

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