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Weather in Cancún for September 2025

Your guide to Cancún weather in September - trends and predictions

    Temperatures

  • So far, September 2025 in Cancún is slightly warmer than the historical average by 1.5 °C.

  • The forecast for the next days in Cancún predicts temperatures to be around 31 °C, close to the historical average.

  • In general, the average temperature in Cancún at the beginning of September is 31.3 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 30.6 °C by the end of September.

    • Rain 🌧️

  • Cancún experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 328.1 mm.

Average dry days
2
Dry days
Average rainy days
28
Rainy days
Average snowy days
0
Snow days
Average temperatures
30°/26°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
78 %
Avg humidity

Cancún Weather September

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

Temperatures trend during September in Cancún

See the weather trend as well as the moving average line

September weather in Cancún day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 31° /26° 5.1 mm 7
2 Sept. Patchy rain possible
Patchy rain possible
 32° /26° 2.3 mm 7
3 Sept. Moderate rain at times
Moderate rain at times
 32° /26° 3.6 mm 7
4 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /26° 5.6 mm 7
5 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 2 mm 7
6 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /26° 2.7 mm 7
7 Sept. Cloudy
Cloudy
 31° /26° 2 mm 7
8 Sept. Light rain shower
Light rain shower
 31° /26° 6.4 mm 7
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /26° 10 mm 7
10 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /25° 15.2 mm 7
11 Sept. Patchy rain possible
Patchy rain possible
 31° /26° 2.1 mm 7
12 Sept. Cloudy
Cloudy
 31° /26° 0.5 mm 7
13 Sept. Partly cloudy
Partly cloudy
 31° /26° 3.9 mm 7
14 Sept. Partly cloudy
Partly cloudy
 33° /25° 0 mm 2.5
15 Sept. Patchy rain possible
Patchy rain possible
 33° /26° 3.3 mm 2.4
16 Sept. Heavy rain
Heavy rain
 31° /25° 28.2 mm 1.5
17 Sept. Moderate rain
Moderate rain
 30° /25° 7.5 mm 0.6
18 Sept. Moderate rain
Moderate rain
 30° /25° 5.2 mm 0
19 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 0.6 mm 6
20 Sept. Patchy rain possible
Patchy rain possible
 30° /26° 2.6 mm 6
21 Sept. Patchy rain possible
Patchy rain possible
 32° /26° 1.3 mm 6
22 Sept. Moderate rain
Moderate rain
 27° /24° 6.6 mm 6
23 Sept. Patchy rain possible
Patchy rain possible
 28° /25° 4.1 mm 6
24 Sept. Moderate rain
Moderate rain
 30° /27° 6 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
 31° /26° 5 mm 6
26 Sept. Patchy rain possible
Patchy rain possible
 31° /27° 0.3 mm 6
27 Sept. Patchy rain possible
Patchy rain possible
 31° /27° 0.3 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 31° /25° 2.2 mm 7
29 Sept. Partly cloudy
Partly cloudy
 30° /25° 3.2 mm 7
30 Sept. Moderate rain at times
Moderate rain at times
 30° /25° 9.5 mm 6
Next
Important Notice
Our weather forecast for Cancún 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 Cancún forecast closer to your planned date for the most up-to-date weather information.
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Cancún in September - FAQ

What are the expected maximum and minimum temperatures in Cancún during September?
During September, expect a variety of temperatures with highs around 30° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cancún during September?
Significant rainfall exceeding 328.1 mm is expected in Cancún during September, occurring over more than 28 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Cancún during September?
The average wind speed in Cancún during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

Cancún water temperatures in September

The average water temperature of the Caribbean Sea near Cancún in September is 27.8 °C. Temperatures remain fairly consistent throughout the month.

What is the water temperature in Cancún in September?
The average water temperature in Cancún in September is 27.8 °C.
Can you swim in Cancún in September?
Ideal conditions for families and casual swimmers. You can stay in for long swims or reef explorations with no thermal protection required.

September rainfall patterns in Cancún

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

UV exposure in Cancún during September

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

Quick links

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Location coordinates Where is Cancún?

Get accurate weather forecasts for Cancún, located at latitude 21.174 and longitude -86.847. Stay updated with localized weather information tailored for Cancún.

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