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West Bay Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit West Bay.
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Climate overview of West Bay
West Bay, Grand Cayman, Cayman Islands, has a stable climate with little temperature variation across the year. Average daytime temperatures hover around 29°C (84°F), peaking in August at 30°C (86°F) and dipping in January to 27°C (81°F).
The city receives considerable rainfall, with around 1055 mm (42 in) annually. October is the wettest month. It has a distinct dry season from January to April. July is the sunniest month, averaging 10.7 hours of sunshine per day.
West Bay Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in West Bay - and find the best time to visit.
Monthly Temperature in West Bay
With minimal seasonal shifts, West Bay experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a very warm 30°C (86°F) in August to a comfortable 27°C (81°F) in the coolest month, January.
Nights vary from 28°C (82°F) in August to around 25°C (77°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in West Bay
West Bay has a notably wet climate with abundant precipitation, recording 1055 mm (42 in) of rainfall per year. The climate in West Bay shows significant variation throughout the year. Expect heavy rainfall in October, the wettest month, with an average of 224 mm (8.8 in) of precipitation over 17 rainy days.
In contrast, the driest month February offers drier and sunnier days, with around 23 mm (0.9 in) of rainfall over 8 rainy days. For more details, please visit our West Bay Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in West Bay
West Bay offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between July (10.7 hours daily) and November (7.0 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Georgetown, Cayman Islands (9 KM, 5 Miles).
Daily hours of sunshine
Data from: Georgetown, Cayman Islands (9 KM, 5 Miles).
Water Temperature in West Bay
The mean water temperature over the year ranges from 27°C (81°F) in January to 30°C (86°F) in August.
Water temperature over the year
Data from: Georgetown, Cayman Islands (9 KM, 5 Miles).
Humidity in West Bay by Month
The relative humidity is high throughout the year in West Bay.
The city experiences its highest humidity in September, reaching 79%. In March, the humidity drops to its lowest level at 75%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Georgetown, Cayman Islands (9 KM, 5 Miles).
Best Time to Visit West Bay
For comfortable weather, consider visiting West Bay in January, February, March, April and December. Conditions are usually least favourable in October.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
excellent
Feb
excellent
Mar
excellent
Apr
excellent
May
very good
Jun
mixed
Jul
good
Aug
mixed
Sep
mixed
Oct
very wet
Nov
very good
Dec
excellent
- Best overall: January, February, March, April and December
- Warmest weather: May, June, July, August, September and October
- Most sunshine: July
- Fewest rainy days: February, March and April
- Best for swimming: Any time of year. The sea stays pleasantly warm year-round.
- Wettest months: August, September, October and November, when rainfall is highest.
- Seasonal pattern: A distinct dry season from January to April
Frequently asked questions about the climate in West Bay
What is the best time to visit West Bay?
January, February, March, April and December typically offer the most optimal weather in West Bay. In contrast, October tends to have less optimal conditions. West Bay has a distinct dry season from January to April.
What temperatures can I expect in West Bay?
Daytime highs range from 27°C (81°F) in January to 30°C (86°F) in August. Nighttime lows range from 25°C (77°F) to 28°C (82°F). Temperatures stay relatively stable year-round.
How much rain does West Bay get?
Annual rainfall is around 1055 mm (42 in). October is the wettest month with 224 mm (8.8 in), while February is the driest with 23 mm (0.9 in).
How sunny is West Bay?
West Bay receives around 3,050 hours of sunshine per year. July is the sunniest month with 322 hours, while November is the cloudiest with just 210 hours. Overall, West Bay enjoys abundant sunshine.
West Bay 3-Day Forecast
West Bay on the map
West Bay is highlighted - select any city to see its climate.
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