Weather in Cayman Islands for September 2027
In general, the average temperature in Cayman Islands 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.
Cayman Islands in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 246.6 mm.
Is September a good time to visit Cayman Islands? check out the best time to travel to Cayman Islands page.
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Cayman Islands Weather September
What’s the Weather Like in Cayman Islands This September?
Temperatures trend during September in Cayman Islands
September weather in Cayman Islands day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 29° /28° | 4.9 mm | 8 | |
| 2 Sept. |  Patchy rain possible | 29° /28° | 1.8 mm | 8 | |
| 3 Sept. | Patchy rain possible | 30° /28° | 0.6 mm | 6 | |
| 4 Sept. | Light rain | 30° /28° | 2.7 mm | 6 | |
| 5 Sept. | Light rain | 29° /28° | 5.1 mm | 7 | |
| 6 Sept. | Light rain | 30° /28° | 5.5 mm | 7 | |
| 7 Sept. | Patchy rain possible | 30° /29° | 1.4 mm | 7 | |
| 8 Sept. | Light rain | 30° /29° | 3.5 mm | 8 | |
| 9 Sept. |  Moderate rain | 31° /28° | 10.8 mm | 7 | |
| 10 Sept. | Light rain | 31° /29° | 3.7 mm | 7 | |
| 11 Sept. | Patchy rain possible | 30° /28° | 2 mm | 6 | |
| 12 Sept. | Patchy rain possible | 30° /28° | 0.8 mm | 8 | |
| 13 Sept. |  Overcast | 30° /29° | 0.3 mm | 8 | |
| 14 Sept. | Patchy rain possible | 30° /29° | 2.1 mm | 9 | |
| 15 Sept. | Patchy rain possible | 31° /29° | 1.2 mm | 8 | |
| 16 Sept. | Patchy rain possible | 30° /28° | 1.5 mm | 7 | |
| 17 Sept. | Patchy rain possible | 31° /28° | 1.4 mm | 8 | |
| 18 Sept. | Light rain | 30° /28° | 5.6 mm | 6 | |
| 19 Sept. |  Heavy rain at times | 30° /28° | 9.1 mm | 5 | |
| 20 Sept. | Heavy rain at times | 29° /27° | 10 mm | 5 | |
| 21 Sept. | Moderate rain | 30° /28° | 13.9 mm | 5 | |
| 22 Sept. |  Moderate or heavy rain shower | 29° /27° | 9.4 mm | 5 | |
| 23 Sept. | Moderate rain | 29° /28° | 20.5 mm | 5 | |
| 24 Sept. |  Heavy rain | 29° /27° | 48 mm | 5 | |
| 25 Sept. | Heavy rain | 29° /28° | 34.8 mm | 5 | |
| 26 Sept. | Moderate rain | 29° /28° | 17.7 mm | 5 | |
| 27 Sept. | Patchy rain possible | 30° /28° | 1.9 mm | 8 | |
| 28 Sept. | Moderate rain | 29° /28° | 12.4 mm | 6 | |
| 29 Sept. | Moderate or heavy rain shower | 29° /27° | 7 mm | 5 | |
| 30 Sept. | Light rain | 30° /28° | 7.1 mm | 6 | |
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Guide for Cayman Islands in September
In the Cayman Islands, September marks the transition from the peak of the summer season to the beginning of the fall season. At the beginning of the month, the weather in the Cayman Islands is typically warm and humid, with average temperatures ranging from 28° to 31°.
The sea temperatures are also quite warm, making it an ideal time for water activities such as snorkeling and diving. However, there is a higher chance of experiencing brief showers or thunderstorms during this time, as it is the tail end of the wet season.
By the end of September, the weather in the Cayman Islands begins to show signs of the approaching fall season. The temperatures start to gradually decrease, with average highs around 30° and lows around 26°.
The humidity also begins to lessen, providing a more comfortable environment for outdoor activities. The sea conditions remain favorable for water sports and beach outings, with water temperatures remaining warm and inviting.
Overall, September in the Cayman Islands offers a mix of warm temperatures, occasional showers, and decreasing humidity as the month progresses, making it a great time to enjoy the island's natural beauty and outdoor attractions.