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Weather in Grand Cayman for September 2027

Your guide to Grand Cayman weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Grand Cayman at the beginning of September is 29.6 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 29.5 °C by the end of September.

    • Rain 🌧️

  • Grand Cayman in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 246.6 mm.

    • More

  • Is September a good time to visit Grand Cayman? check out the best time to travel to Grand Cayman page.

Average dry days
11
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
30°/28°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Grand Cayman Weather September

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

Temperatures trend during September in Grand Cayman

See the weather trend as well as the moving average line

September weather in Grand Cayman day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain
Light rain
 29° /28° 4.9 mm 8
2 Sept. Patchy rain possible
Patchy rain possible
 29° /28° 1.8 mm 8
3 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 0.6 mm 6
4 Sept. Light rain
Light rain
 30° /28° 2.7 mm 6
5 Sept. Light rain
Light rain
 29° /28° 5.1 mm 7
6 Sept. Light rain
Light rain
 30° /28° 5.5 mm 7
7 Sept. Patchy rain possible
Patchy rain possible
 30° /29° 1.4 mm 7
8 Sept. Light rain
Light rain
 30° /29° 3.5 mm 8
9 Sept. Moderate rain
Moderate rain
 31° /28° 10.8 mm 7
10 Sept. Light rain
Light rain
 31° /29° 3.7 mm 7
11 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 2 mm 6
12 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 0.8 mm 8
13 Sept. Overcast
Overcast
 30° /29° 0.3 mm 8
14 Sept. Patchy rain possible
Patchy rain possible
 30° /29° 2.1 mm 9
15 Sept. Patchy rain possible
Patchy rain possible
 31° /29° 1.2 mm 8
16 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 1.5 mm 7
17 Sept. Patchy rain possible
Patchy rain possible
 31° /28° 1.4 mm 8
18 Sept. Light rain
Light rain
 30° /28° 5.6 mm 6
19 Sept. Heavy rain at times
Heavy rain at times
 30° /28° 9.1 mm 5
20 Sept. Heavy rain at times
Heavy rain at times
 29° /27° 10 mm 5
21 Sept. Moderate rain
Moderate rain
 30° /28° 13.9 mm 5
22 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /27° 9.4 mm 5
23 Sept. Moderate rain
Moderate rain
 29° /28° 20.5 mm 5
24 Sept. Heavy rain
Heavy rain
 29° /27° 48 mm 5
25 Sept. Heavy rain
Heavy rain
 29° /28° 34.8 mm 5
26 Sept. Moderate rain
Moderate rain
 29° /28° 17.7 mm 5
27 Sept. Patchy rain possible
Patchy rain possible
 30° /28° 1.9 mm 8
28 Sept. Moderate rain
Moderate rain
 29° /28° 12.4 mm 6
29 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /27° 7 mm 5
30 Sept. Light rain
Light rain
 30° /28° 7.1 mm 6
Next
Important Notice
Our weather forecast for Grand Cayman 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 Grand Cayman forecast closer to your planned date for the most up-to-date weather information.
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Grand Cayman in September - FAQ

What are the expected maximum and minimum temperatures in Grand Cayman during September?
During September, expect a variety of temperatures with highs around 30° and lows near 28°, suitable for diverse activities and preferences.

How much rainfall should be expected in Grand Cayman during September?
Significant rainfall exceeding 246.6 mm is expected in Grand Cayman during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.

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

September rainfall patterns in Grand Cayman

Explore the daily rainfall trends and prepare for Grand Caymans September weather 💧
Typically, Grand Cayman has 19 rainy days in September with a total of 246.6 mm of rainfall.

UV exposure in Grand Cayman during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Grand Cayman?

Get accurate weather forecasts for Grand Cayman, located at latitude 19.323 and longitude -81.249. Stay updated with localized weather information tailored for Grand Cayman.

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