Last updated: October 30, 2025
In August, the enchanting island of Vieques, Puerto Rico experiences warm weather, with temperatures typically reaching a maximum of 31°C (88°F) and an average of 28°C (82°F), while the nights bring a refreshing minimum of 25°C (77°F). This month is characterized by a significant amount of rainfall, with 111 mm (4.4 in) of precipitation spread over 24 days, resulting in a humid environment with levels around 80%. Visitors can expect a mix of sunny and showery days, making it essential to embrace both the tropical warmth and the occasional tropical downpour.
In August, Vieques, Puerto Rico, experiences warm and inviting temperatures, with minimums averaging around 25°C (77°F) and maximums peaking at 31°C (88°F). This month represents the height of summer, showcasing a consistent trend of warmth that begins in May. The average temperature climbs to a comfortable 28°C (82°F), encouraging both locals and visitors to indulge in sun-soaked adventures. Notably, August stands out with its slightly higher maximums compared to the preceding months, ensuring that the island’s stunning beaches and vibrant outdoor activities remain a popular draw. With evenings that still linger in warmth, the atmosphere is perfect for enjoying picturesque sunsets and tropical nights, all while reflecting the island's idyllic charm.
In August, Vieques, Puerto Rico, experiences a notable peak in precipitation, with an average of 111 mm (4.4 inches) of rain falling over 24 days. This increase marks one of the highest monthly totals, closely following July’s deluge of 110 mm. As summer progresses, the trend illustrates a gradual rise in rainfall, peaking in late summer and early fall, reflecting the island's tropical climate. This heightened precipitation also sets the stage for even wetter conditions in September, which averages 154 mm (6.0 inches). Overall, August serves as a critical transition point in Vieques’s weather patterns, bridging the relative dryness of the earlier months to the intense rain of the autumn period.
In August, Vieques, Puerto Rico experiences a notable peak in humidity at 80%, matching the levels seen in July. This summer high reflects the island's warm tropical climate, where humidity tends to rise steadily from 74% in March to this summer climax. As the season nears its end, humidity levels begin to gradually decrease, slipping to 79% in September. Overall, the consistent humidity throughout the year, hovering around mid to high seventies, underscores the lush, vibrant environment that characterizes Vieques, making it a uniquely serene tropical escape.
In August, Vieques, Puerto Rico experiences an extreme UV Index of 13, with a burn time of just 10 minutes—a continuation of the high levels felt throughout the summer months. This trend marks a significant contrast from the cooler months, where January and November see much more moderate indices of 9, categorized as very high. The persistent extreme values from February through August emphasize the importance of sun protection during this season, setting the stage for September's peak at an alarming UV Index of 14. As such, it's crucial for visitors and residents alike to stay informed and take necessary precautions against sun exposure. For real-time updates on UV levels, check the Vieques UV Index.
UV Risk Categories
August in Vieques, Puerto Rico, showcases a delightful continuation of summer sunshine, boasting 349 hours of radiant daylight. This month maintains a strong position within the year’s sunny lineup, comfortably nestled amidst the peak summer months of May (357 hours) and July (354 hours). Interestingly, the sunlight begins to wane slightly as the season progresses, but August still benefits from lingering warmth and vibrant days, making it a perfect time for outdoor adventures. Following the summer's high, September sees a decrease to 318 hours, hinting that autumn's arrival is just around the corner. Overall, Vieques offers a sun-soaked experience throughout the year, but August shines as a standout month for those craving that golden glow.
August in Vieques, Puerto Rico, brings a 39% chance of sunny weather, making it one of the more overcast months of the year. This trend follows a gradual decline from the sunnier months of late spring, peaking in February and November with sun probabilities over 60%. By mid-summer, the sunshine dips considerably, as evidenced by a 23% chance in June and 43% in July. As the summer winds down, September slightly rebounds to 49%, hinting at a brighter transition into autumn. While August may not offer the sunniest skies, it certainly still possesses its allure, inviting travelers to enjoy the lush scenery and vibrant culture regardless of the cloud cover.
In August, Vieques, Puerto Rico experiences a delightful 12 hours of daylight, a continuation of the sunny streak that peaks in the summer months. Following the longest days of June and July, which both boast an impressive 13 hours, August marks a gentle transition back to the slightly shorter days of early fall. This pattern reflects a consistent trend where daylight remains abundant for most of the year, gradually varying between 11 to 13 hours. The warmth of summer lingers, encapsulating the island in beautiful golden hues, making August an ideal time for both relaxation and exploration under the sun.
In August, Vieques, Puerto Rico, experiences a delightful average wind speed of 5.4 m/s (12 mph), blending comfort with a refreshing breeze. This month sees a slight dip from the peak July winds of 6.1 m/s (14 mph) but maintains a steady flow reminiscent of the spring months. The consistent wind patterns throughout the summer create an inviting atmosphere for outdoor activities, while the calmed breezes in September signal a transition toward the quieter fall months, with winds easing to 3.8 m/s (9 mph). Overall, August stands as a beautiful bridge in the climate, where the warm island sun meets the gentle caress of the summer winds, inviting visitors to embrace the natural charm of Vieques.
Weather in Vieques varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Vieques, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of August to January, August consistently showcases hotter temperatures, with a minimum of 25°C (77°F) and an average of 28°C (82°F), peaking at 31°C (88°F). In contrast, January offers slightly cooler temperatures, with a minimum of 22°C (71°F), an average of 25°C (77°F), and a maximum of 29°C (84°F). Precipitation also varies significantly between the two months, as August experiences a heavy 111 mm (4.4 in) spread over 24 days, while January sees only 49 mm (1.9 in) over 15 days. Humidity levels are slightly higher in August at 80% compared to January's 76%. For more detailed insights, you can check Vieques weather in January.
August and February present contrasting weather patterns, reflecting the changes of the seasons. In August, temperatures are warmer, with minimums around 25°C (77°F) and averaging 28°C (82°F), peaking at 31°C (88°F). This month also sees significant rainfall, with 111 mm (4.4 in) of precipitation over 24 days and an average humidity of 80%. In contrast, February offers a milder climate, with temperatures ranging from a minimum of 21°C (71°F) to an average of 25°C (77°F) and a maximum of 28°C (83°F). February experiences less rainfall, totaling 52 mm (2.1 in) spread over 19 days, and slightly lower humidity at 75%. For more detailed insights on February weather, you can visit Vieques weather in February.
The weather in August is typically warm and humid, with minimum temperatures around 25°C (77°F) and averages reaching 28°C (82°F), peaking at 31°C (88°F). August also brings higher precipitation, averaging 111 mm (4.4 inches) over approximately 24 days, which contributes to a humidity level of about 80%. In contrast, March presents slightly cooler temperatures, with minimums at 22°C (72°F) and averages of 25°C (77°F), peaking at 28°C (83°F). Rainfall in March is lower, totaling around 63 mm (2.5 inches) over 18 days, and the humidity is more comfortable at 74%. For more details, you can check the Vieques weather in March.
Comparing the weather in August and April reveals distinct differences in temperature and precipitation. In August, the temperatures are generally warmer, with minimums around 25°C (77°F) and maximums reaching up to 31°C (88°F), while April has slightly cooler temperatures, ranging from a minimum of 22°C (73°F) to a maximum of 29°C (85°F). Additionally, August experiences more rainfall, averaging 111 mm (4.4 in) across 24 days, compared to April’s 55 mm (2.2 in) over 17 days. Humidity levels are also higher in August at 80%, compared to 75% in April, making the summer month feel even more tropical. For more information on April weather, check out Vieques weather in April.
In comparing the weather of August and May, August tends to be slightly warmer with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 31°C (88°F), whereas May's temperatures are a bit cooler, with a minimum of 23°C (74°F) and a maximum of 30°C (87°F). Precipitation levels also differ, with August experiencing more rain at 111 mm (4.4 in) over 24 days compared to May's 74 mm (2.9 in) over 21 days. Additionally, humidity levels are higher in August at 80%, whereas May maintains a lower humidity of 75%. For more detailed information, you can check out the link: Vieques weather in May.
In comparing the weather of August and June, we find that August tends to be slightly warmer, with average temperatures reaching 28°C (82°F) compared to June's average of 27°C (81°F). Both months experience high humidity, but August has a marginally higher level at 80%, compared to June's 77%. Precipitation also increases significantly in August, with 111 mm (4.4 in) over 24 days, whereas June has only 69 mm (2.7 in) spread across 21 days. For more detailed information on June weather conditions, you can explore Vieques weather in June.
In comparing the weather between July and August, both months exhibit similar temperature ranges, with July recording minimum temperatures of 24°C (76°F) and a maximum of 30°C (87°F), while August sees slightly warmer minimums at 25°C (77°F) and a peak of 31°C (88°F). Precipitation is nearly identical, with July receiving 110 mm (4.3 in) and August slightly higher at 111 mm (4.4 in), both spread across 24 days. Humidity remains consistent throughout both months at 80%. For a more detailed look at July's weather, you can check Vieques weather in July.
August and September in Vieques exhibit similar temperature profiles, with both months experiencing minimum temperatures around 25°C (77°F), average highs of 28°C (82°F), and maximum temperatures peaking at 31°C (88°F in August and 89°F in September). However, September tends to be wetter, with total precipitation increasing to 154 mm (6.0 in) compared to August's 111 mm (4.4 in), while both months see rain on approximately 24 days. Humidity is slightly lower in September at 79%, compared to a higher 80% in August. For more details on September weather, you can check this link: Vieques weather in September.
In comparing the weather between August and October, we see some similarities and notable differences. Both months experience warm temperatures, with August averaging around 28°C (82°F) and October slightly cooler at 27°C (81°F). The maximum temperatures are comparable, both reaching up to 31°C (88°F in August and 87°F in October).
However, October tends to be wetter, with a total precipitation of 140 mm (5.5 in) over 22 days, compared to August's 111 mm (4.4 in) over 24 days. Humidity levels also drop slightly in October to 78%, down from 80% in August. For more details about what to expect during this time, check out Vieques weather in October.
In comparing the weather of August and November, one can observe that August tends to be slightly warmer, with average temperatures reaching 28°C (82°F) compared to November's 27°C (80°F). Both months experience similar precipitation levels, with August receiving 111 mm (4.4 in) over 24 days and November recording 112 mm (4.4 in) over 21 days. Humidity levels are also comparable, with August at 80% and November slightly lower at 78%. For a more detailed look at the weather conditions in November, you can check Vieques weather in November.
In comparing the weather of August and December, August is characterized by slightly higher temperatures, with average highs reaching up to 31°C (88°F) compared to December's maximum of 30°C (87°F). However, December experiences a marginally lower minimum temperature of 23°C (74°F) versus August's 25°C (77°F). Precipitation is more frequent in August, with 111 mm (4.4 in) recorded over 24 days, while December sees less rainfall at 68 mm (2.7 in) across 21 days. Additionally, humidity levels are slightly higher in August at 80%, compared to 76% in December. For more detailed insights, you can check Vieques weather in December.
In August, Vieques experiences warm temperatures with an average of around 28°C (82°F), marking it as one of the hotter months of the year. While the daytime can reach up to 31°C (88°F), the humidity levels soar to about 80%, making the heat feel more intense. August is also characterized by increased rainfall, with precipitation occurring on nearly half the days of the month, resulting in about 111 mm (4.4 in) of rain. This combination of high temperatures and frequent showers distinguishes August from other months in Vieques, creating a unique climate that both locals and visitors experience. For more detailed insights into the island's weather, check out Vieques Climate.