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Grand Cayman weather in September

Thinking about venturing to Grand Cayman this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Grand Cayman in September?

Grand Cayman is a region in Cayman Islands. September in Grand Cayman generally has very warm temperatures, with high precipitation.

You can expect very warm maximum daytime temperatures of around 30°C and nighttime temperatures around 27°C in West Bay. The temperatures mentioned for both day and night are typical averages. However some days might get even hotter. It's best to stay prepared by wearing cloths suitable for the warmth.

September is a rainy month with an average rainfall of around 153 mm in West Bay.

For specific regional insights in Grand Cayman for September, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Grand Cayman climate page.

Where to go in Grand Cayman in September

Find the average weather conditions in September for the most popular destinations in Grand Cayman on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Grand Cayman

What is the weather like in September for the 4 most popular destinations in Grand Cayman?

Average weather in West Bay

In September West Bay generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 27°C and high monthly rainfall. So on average the conditions are tolerable that month.

West Bay
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
28°C 
100 mm 
15 days 
30°C 
27°C 
153 mm 
16 days 
October   >> October
>>  
30°C 
27°C 
224 mm 
17 days 
poor 
Climate in West Bay

Average weather in Gun Bay

In September Gun Bay generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 27°C and high monthly rainfall. So on average the conditions are tolerable that month.

Gun Bay
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
31°C 
28°C 
97 mm 
15 days 
30°C 
27°C 
154 mm 
16 days 
October   >> October
>>  
30°C 
27°C 
223 mm 
17 days 
poor 
Climate in Gun Bay

Average weather in Brinkleys

In September Brinkleys generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 27°C and high monthly rainfall. So on average the conditions are tolerable that month.

Brinkleys
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
31°C 
28°C 
98 mm 
15 days 
30°C 
27°C 
154 mm 
16 days 
October   >> October
>>  
30°C 
27°C 
224 mm 
17 days 
poor 
Climate in Brinkleys

Average weather in George Town

In September George Town generally has very high temperatures with maximum daytime temperatures around 30°C, minimum nighttime temperatures around 27°C and high monthly rainfall. So on average the conditions are tolerable that month.

George Town
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
30°C 
27°C 
99 mm 
15 days 
30°C 
27°C 
152 mm 
16 days 
October   >> October
>>  
30°C 
27°C 
224 mm 
17 days 
poor 
Climate in George Town

Is your destination not in the list? Have a look at other destinations in Grand Cayman, in Cayman Islands.

Is September the best time to visit Grand Cayman?

In our opinion, September is a good time to visit Grand Cayman with overall tolerable weather in West Bay. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, the best visiting conditions can be found in January, February, March, April and December offering mostly perfect weather in West Bay. On the other hand, the weather in October tends to be poor.

Interested in more climate information?

We have much more information about the climate in Grand Cayman. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Cayman Islands? Get detailed historical weather averages for many cities in Cayman Islands.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.