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Grand Cayman Weather in October: Rain, Temperatures

Grand Cayman weather in October
Average high temperature and rainfall for Grand Cayman in October. © 2023 Scott S. Bateman

Grand Cayman weather in October is likely to be very wet for anyone taking a western Caribbean cruise that includes a stop in the Cayman Islands.

What makes a Caribbean cruise risky in October is the fact that that month is one of the two peak months for bad weather during the annual Caribbean hurricane season.

Historically, the Cayman Islands are not immune to getting their share of tropical storms and the effects of nearby hurricanes.

The following numbers come from 30-year averages for Grand Cayman and the Cayman Islands. The actual totals will vary from year to year.

Grand Cayman Rainfall in October

October is the worst month of the year on average for rainfall in Grand Cayman, which is a bit unusual because September is the worst for most other destinations.

Total rainfall for the month is about 8.5 inches, according to the Cayman Islands National Meteorology Service. It is one of the highest in the Caribbean. In contrast, the Caymans receive less than two inches from January through April.

The total number of days it rains is 19, which also is one of the highest in the region.

January through March have 10-12 rain days and April has only seven.

Grand Cayman Temperatures in October

This video explains Caribbean weather in October and which islands are the best and worst to visit for weather.

Full-Screen Version | YouTube Caribbean Channel
At least it should be warm for anyone brave enough to visit Grand Cayman in October.

The average high temperature for Grand Cayman in October is 91 degrees Fahrenheit or nearly 33 Celsius, according to the Cayman Islands National Meteorology Service. The island’s high temperature hovers between 90 and 92 degrees Fahrenheit from May through November.

The average low temperature is only 72 degrees Fahrenheit or about 22 Celsius, which is cooler than most other destinations for nighttime weather in October.

Seawater temperatures should still feel comfortable enough for swimming, especially in the afternoons.

• Grand Cayman weather in
January, February, March, April, May, June, July, August, September, October, November, December

Whether to Go

In a word, don’t. October is the worst month of the year for weather in Grand Cayman.

Cruises that include a stop there are far fewer in number during October because of the risk of bad weather.

The best and only reason to go is if the weather forecast shows decent weather coming out of the Atlantic Ocean in the coming days and there is an opportunity to get a last-minute deal at a resort or hotel or on a cruise.

It is also worth mentioning that a single day of bad weather won’t ruin a vacation in the Caribbean.

But multiple days of rain and heavy cloud cover will certainly take away the shine.

Scott S. Bateman is a professional journalist who has traveled widely throughout the Caribbean and the Americas. He is the author of four books about cruising in the Caribbean, Alaska and Mexican Riviera.
September 21, 2023

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