August Weather in West Bay, Cayman Islands

Last updated: August 21, 2025

In August, West Bay, Cayman Islands, experiences a tropical climate characterized by warm temperatures and notable humidity. Daily highs reach a comfortable 30°C (86°F), with an average around 29°C (84°F), while nighttime lows dip to a mild 25°C (77°F). This month also brings a fair share of rain, with 105 mm (4.1 in) of precipitation spread across 16 days, contributing to the humidity levels averaging 75%. Visitors can expect lush landscapes and vibrant marine life, making August an ideal time for both relaxation and adventure amidst the island's serene beauty.

August Temperature in West Bay

In August, West Bay, Cayman Islands, experiences its warmest temperatures of the year, with minimums around 25°C (77°F) and averages soaring to 29°C (84°F). The maximums reach a balmy 30°C (86°F), perfectly complementing the vibrant atmosphere of summer. This trend of rising temperatures reflects a gradual warming from the earlier months; the region builds from a mild 26°C (78°F) in January to peak during August. Expect plenty of sunshine and humidity, making it an ideal time for beach lovers and water sport enthusiasts to enjoy the azure waters and golden sands. As the summer continues, the warmth remains inviting, encouraging visitors to bask in the tropical paradise that is West Bay.

August Weather in West Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in West Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In West Bay, August typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec787978808182838383828179
Data source: Temperature data for West Bay generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in West Bay

In August, West Bay, Cayman Islands experiences a notable uptick in precipitation, with 105 mm (4.1 in) of rainfall spread over 16 days. This marks a significant increase compared to the previous months, particularly after the drier spell of July, which recorded only 55 mm (2.2 in). As the summer progresses, August serves as a bridge into the wetter season, hinting at the impending rainfall typical of the fall months. The increased frequency of rainy days demonstrates a shift in the weather pattern, laying the groundwork for a robust rainy season ahead, as the island approaches October, which often sees even higher precipitation levels. This growth in moisture not only refreshes the lush landscapes of the Cayman Islands but also sets the stage for a vibrant biodiversity as the ecosystem thrives.

August Precipitation Trends in West Bay

The chart displays monthly precipitation patterns in West Bay, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In West Bay, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec39242025130875510510225517546
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in West Bay

August in West Bay, Cayman Islands, brings a consistent humidity level of 75%, mirroring the patterns observed in the preceding months. The humidity remains relatively stable throughout the summer, with July showcasing a slight uptick before settling back in line with September's levels. This trend illustrates the region's tropical climate, characterized by high moisture content, especially as the year progresses towards the fall. Notably, as autumn approaches, a gradual increase in humidity is seen in November and December, climbing to 78%, offering a subtle reminder of the island’s lush, vibrant environments highly influenced by its humid conditions.

August Average Humidity in West Bay

This chart illustrates the average monthly humidity levels in West Bay, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in West Bay is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%74%75%73%74%75%75%75%75%78%78%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in West Bay

In August, West Bay, Cayman Islands, experiences an extreme UV Index of 12, with a burn time of just 10 minutes. This month continues the trend set from the previous months of June and July, where the index also reached 12. The high UV levels in summer peak during this period, emphasizing the importance of sun protection, especially when the sun is at its strongest. As the year progresses, a notable decline in UV levels occurs, transitioning from the extreme category in the summer months to the very high levels in November and December. For those planning outdoor activities, it's crucial to stay informed about the UV Index to ensure safety and minimize skin damage. For more details, check out the West Bay UV Index.

Maximum UV Index Levels in West Bay for August

The chart shows the monthly maximum UV Index (UVI) for West Bay in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in West Bay typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec910121313131212121198
Data source: West Bay August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in West Bay

August in West Bay, Cayman Islands, continues the trend of abundant sunshine that defines the summer months. With 335 hours of sunshine, it closely follows the peak of July, which boasts the highest at 348 hours. As the year progresses, the sunlight hours transition seamlessly from the vibrant 342 hours in May to the still generous 321 hours in June. While August's sunshine slightly dips from July, it remains well above the average of 299 hours seen from the beginning of the year, establishing it as a prime time for beachgoers and sun seekers alike. As September approaches, the island still enjoys a healthy 322 hours, hinting at the lingering warmth of summer before the gradual shift into autumn.

Monthly Sunshine Duration in West Bay: August Highlighted

The August sunshine duration represents the total number of hours West Bay experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec247h299h337h341h342h321h348h335h322h294h290h303h
Data source: West Bay August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in West Bay During August

In West Bay, Cayman Islands, August tends to be one of the less sunny months of the year, with a chance of sun at just 47%. This decrease follows a relatively bright July, which experiences a 51% likelihood of sunshine. The weather in August marks a contrast to the sun-soaked earlier months, such as February, which boasts a 79% chance of clear skies. Notably, as summer transitions into autumn, the trend shows a gradual decline in sunny days, with the chance of sunshine dipping further in September and October. While August still offers plenty of warm weather, visitors may want to embrace the possibility of clouds and prepare for those delightful tropical showers!

Percentage of Sunny Days in August in West Bay

The chart illustrates the percentage of sunny days in West Bay throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often West Bay experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec56%79%78%62%73%39%51%47%52%45%36%70%
Data source: West Bay August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in West Bay in August

In August, West Bay, Cayman Islands, enjoys about 12 hours of daylight, marking a slight decrease from the previous months of June and July, which each basked in a full 13 hours of sunshine. This month still maintains a generous amount of daylight, especially compared to the earlier half of the year, where the duration gradually increased from 11 hours in January and February to 12 hours in March and April. As summer peaks, August provides a perfect balance of sunshine, hinting at the gradual transition toward shorter days in the coming months. September follows suit with a similar 12 hours of daylight, ensuring that the warm, sun-kissed days linger just a bit longer before ushering in the autumn season.

Average Daylight Hours in West Bay for August

The chart illustrates the variation in daylight duration in West Bay throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 5m11h 30m12h 2m12h 35m13h 2m13h 16m13h 8m12h 44m12h 12m11h 40m11h 12m10h 58m
Data source: West Bay daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in West Bay

August in West Bay, Cayman Islands, brings a gentle breeze with an average wind speed of 5.9 m/s (13 mph). This is slightly higher than the summer months of June and July, which both see wind speeds of 5.8 m/s (13 mph). As the year progresses, a noticeable decline occurs in September and October, where winds drop to 4.6 m/s (10 mph) and 4.7 m/s (10 mph) respectively. This trend reflects a seasonal fluctuation, with the wind picking up again in November at 6.0 m/s (13 mph) and reaching its peak in December at 7.2 m/s (16 mph). Overall, August offers a pleasant balance, making it an enjoyable time for outdoor activities while hinting at the refreshing winds to come in the following months.

Average August Wind Speed in West Bay

The chart displays monthly wind speed patterns in West Bay, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec6.76.96.56.55.65.85.85.9 m/s4.64.76.07.2
Data source: West Bay August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in West Bay Compares to Other Months

Weather in West Bay varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in West Bay, focusing on differences in temperature, rainfall, humidity, and UV levels.

In August, the weather is typically warmer, with average temperatures reaching around 29°C (84°F) and a maximum of 30°C (86°F), compared to January's milder averages of 26°C (78°F) and a max of 28°C (82°F). August also sees more precipitation, with about 105 mm (4.1 in) falling over approximately 16 days, while January experiences significantly less rainfall at 39 mm (1.5 in) over 11 days. Despite both months having similar humidity levels—75% in August and 77% in January—August tends to feel more oppressive due to the higher temperatures and more frequent rain. For a detailed look at January's weather, you can check West Bay weather in January.

When comparing the weather in August and February, August tends to be hotter and more humid. The minimum temperature in August is 25°C (77°F), with an average of 29°C (84°F) and a maximum of 30°C (86°F). In contrast, February features slightly cooler temperatures, with a minimum of 21°C (70°F), an average of 26°C (79°F), and a maximum of 27°C (81°F). Additionally, August experiences significantly more rainfall, with 105 mm (4.1 in) over 16 days, compared to February’s 24 mm (1.0 in) over just 8 days. Despite the difference in precipitation, humidity remains similar, with August at 75% and February slightly lower at 76%. For more information on February weather, you can visit West Bay weather in February.

In comparing the weather of August and March, we find distinct contrasts in temperature and precipitation patterns. August boasts a higher temperature range, with averages reaching around 29°C (84°F) and peaks of 30°C (86°F), while March presents milder conditions, averaging 26°C (79°F) and maxing out at 27°C (82°F). Additionally, August experiences significantly more rainfall, with 105 mm (4.1 in) over 16 days, compared to March's much drier total of just 19 mm (0.8 in) across 6 days. Humidity levels remain fairly similar, with August at 75% and March at 74%. For a more detailed look at March weather in West Bay, you can visit West Bay weather in March.

In comparing the weather between August and April, we see that both months experience high humidity levels of around 75%, but their temperatures differ slightly. August features a minimum temperature of 25°C (77°F) and an average of 29°C (84°F), while April has a minimum of 24°C (75°F) and an average of 26°C (80°F). Precipitation is significantly higher in August, with 105 mm (4.1 in) over 16 days, compared to just 25 mm (1.0 in) over 7 days in April. This makes August a wetter month, while April tends to be drier and slightly cooler. For more details about April's weather, check out West Bay weather in April.

In comparing August and May weather, both months exhibit warm temperatures, with minimums hovering around 25°C (77°F). However, August tends to be slightly warmer on average, reaching up to 29°C (84°F), while May averages a bit lower at 27°C (81°F). Precipitation levels are noteworthy in both months, with August receiving about 105 mm (4.1 in) over 16 days and May experiencing slightly higher at 130 mm (5.1 in) over 15 days. Humidity in August is marginally higher at 75%, compared to 73% in May, making the former feel a bit more muggy. For more details on the weather specifics, you can check out West Bay weather in May.

In comparing the weather between August and June, both months show similar temperature ranges, with August having slightly higher averages, reaching a maximum of 30°C (86°F) compared to June's 29°C (85°F). August experiences more rainfall, with total precipitation of 105 mm (4.1 in) over 16 days, while June records 87 mm (3.4 in) over 12 days. Additionally, humidity levels are a bit higher in August at 75%, compared to June's 73%. For more details about weather conditions in June, you can check West Bay weather in June.

August tends to be slightly warmer than July, with average temperatures reaching 29°C (84°F) compared to July's 28°C (83°F). Both months share similar minimum and maximum temperatures, but August experiences significantly more precipitation, totaling 105 mm (4.1 in) over 16 days, while July has only 55 mm (2.2 in) over 14 days. Interestingly, humidity remains consistent at 75% for both months, creating a similarly muggy atmosphere. For more details about July's weather, you can visit West Bay weather in July.

August and September present a similar weather profile, with both months characterized by warm temperatures and high humidity levels. In August, the average temperature hovers around 29°C (84°F), reaching a maximum of 30°C (86°F), while September sees a slightly cooler average at 28°C (83°F) but maintains the same maximum temperature. Precipitation is quite comparable as well, with August receiving 105 mm (4.1 in) over 16 days and September slightly less at 102 mm (4.0 in) spread over 18 days. Humidity remains consistent at 75% for both months, ensuring a tropical atmosphere. For a deeper insight into the weather patterns during September, you can check West Bay weather in September.

In August, the weather tends to be quite warm and humid, with average temperatures around 29°C (84°F) and a maximum of 30°C (86°F). The month experiences moderate rainfall, totaling 105 mm (4.1 inches) over approximately 16 days. In contrast, October sees slightly cooler average temperatures of 28°C (82°F) with the same peak at 30°C (86°F). However, it is significantly wetter, with rainfall reaching 254 mm (10.0 inches) over 23 days, while humidity remains consistent at 75%. For more detailed information, you can check West Bay weather in October.

In August, the weather is characterized by warm temperatures, with a minimum of 25°C (77°F) and an average of 29°C (84°F), peaking at around 30°C (86°F). The month sees substantial rainfall, totaling 105 mm (4.1 in) over 16 days, and humidity levels are relatively high at 75%. In contrast, November remains warm but slightly cooler, featuring a minimum temperature of 24°C (76°F) and an average of 27°C (81°F), with maximum temperatures reaching 29°C (84°F). However, November experiences more precipitation, with 174 mm (6.9 in) over 18 days, and a marginal increase in humidity at 78%. For a detailed outlook, check West Bay weather in November.

In August, the weather is typically warmer, with average temperatures reaching 29°C (84°F) and maximums of 30°C (86°F). Higher humidity levels at 75% also contribute to a more tropical feel, alongside significant rainfall totaling 105 mm (4.1 in) over 16 days. In contrast, December offers slightly cooler conditions, with an average temperature of 26°C (80°F) and maximums around 28°C (83°F). The humidity rises to 78%, but precipitation decreases significantly to 46 mm (1.8 in) over just 12 days, making December a drier month overall. For more detailed information, you can check West Bay weather in December.

Compare West Bay's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in West Bay

In August, West Bay experiences its warmest temperatures of the year, with the mercury hovering around a cozy 29°C (84°F). However, this month also marks a notable increase in humidity levels, reaching a sticky 75% that can make the heat feel more intense. Additionally, August is characterized by a higher frequency of rain, with approximately 16 days of precipitation and a total of 105 mm (4.1 in) falling throughout the month. This combination of warmth and moisture sets August apart from the rest of the year, making it essential for visitors and locals alike to stay prepared for both sunny days and sudden showers. For a deeper dive into the region's climate trends, check out West Bay Climate.