Last updated: August 28, 2025
August in Cat Ba, Vietnam is characterized by warm temperatures and high humidity, making it a quintessential summer month. With maximum temperatures reaching up to 34°C (93°F) and an average of 29°C (85°F), the weather prompts visitors to embrace the tropical climate. The month sees minimum temperatures around 25°C (78°F), offering a warm escape. However, prepare for rain, as 25 days of precipitation contribute to a staggering total of 567 mm (22.3 in) throughout the month, resulting in a lush, verdant landscape. The humidity, averaging an intense 89%, enhances the tropical feel but might challenge those not accustomed to such conditions. Whether you're exploring the stunning landscapes or enjoying the vibrant culture, August in Cat Ba promises an unforgettable experience.
In August, Cat Ba, Vietnam, experiences a warm embrace with temperatures comfortably settling between 25°C (78°F) at night and rising to a sizzling 34°C (93°F) during the day. The average temperature remains a balmy 29°C (85°F), making this month one of the hottest of the year. Following the trends of July, August showcases a steady warmth that encourages beachgoers and adventurers to explore the stunning landscapes. As summer peaks in this enchanting island destination, the humidity increases, adding a tropical feel to the vibrant atmosphere. Whether basking in the sun or seeking shade, August promises a quintessential Vietnamese summer experience that delights all who visit.
August proves to be a month of dramatic precipitation in Cat Ba, Vietnam, with an astonishing 567 mm (22.3 in) of rain, marking it as the wettest month of the year. This deluge occurs over 25 days, setting the stage for a stark contrast to the drier months earlier in the year, such as January and February, which see only 34 mm (1.3 in) and 36 mm (1.4 in), respectively. The increasing trend is palpable as rainfall begins to intensify in the spring and peaks spectacularly in mid-summer. Following the patterns established in July with 325 mm (12.8 in), August's substantial rainfall emphasizes the region's shift into its peak wet season, ultimately leading to a decline as the year progresses into September and October. This notable increase not only highlights August's climatic significance but also illustrates the dynamic weather patterns that define life in Cat Ba throughout the year.
In August, Cat Ba, Vietnam experiences a high humidity level of 89%, making it one of the stickiest months of the year. This peak follows a significant rise in humidity from July's sweltering 90%, showcasing the island's tropical climate in full effect during the summer. The trend throughout the year indicates that humidity levels are generally higher during the mid-year months, with June kicking off the wet season at 81%. Following August, humidity gradually declines toward September, which still holds a relatively high 82%. As the year progresses into the cooler months, humidity tapers off, with levels dropping to 77% in October, highlighting the transition into a more comfortable climate.
In August, Cat Ba experiences its peak UV index of 13, categorized as extreme exposure, meaning you may only have 10 minutes before the sun starts causing skin damage. This trend of high UV levels begins in March and persists through the summer months, with the same extreme value carrying into September. Such consistently elevated UV indices highlight the importance of sun protection for locals and visitors alike during this time. As you enjoy the beautiful beaches and stunning landscapes of Cat Ba, remember to stay vigilant against harmful UV rays. For more information, visit Cat Ba UV Index.
UV Risk Categories
In August, Cat Ba, Vietnam basks in a delightful 262 hours of sunshine, showcasing the island's beautiful summer allure. This month marks a slight dip from the peak brightness of May's 312 hours, yet still offers ample sunshine compared to the earlier months of the year. As spring transitions into summer, sunshine hours steadily increased from January’s modest 179 hours, reaching a vibrant peak in late spring. Though August might see fewer rays than its predecessors in April, June, and July, it still maintains a robust sunshine presence, making it an ideal time for beachgoers and outdoor enthusiasts to explore the stunning landscapes and vibrant marine life. As summer begins to wane, the following months, particularly September, continue to deliver generous sunlight, ensuring that Cat Ba remains a sun-drenched paradise well into the fall.
August in Cat Ba, Vietnam, is characterized by a notably low chance of sunny weather, sitting at just 14%. This trend is part of a broader pattern that sees a gradual decline in sunshine from June through August, with July peaking slightly at 25% before dropping. In contrast, the earlier months of the year, like January and February, offer more promising prospects for sunny days, reaching 46% and 59% respectively. As summer reaches its zenith during August, travelers should be prepared for potential overcast skies and occasional showers, making this month less favorable for those seeking sun-soaked adventures.
In Cat Ba, Vietnam, August offers a pleasant 12 hours of daylight, making it a perfect time to explore the island's stunning landscapes. As summer peaks, the daylight duration slightly tapers from the 13-hour stretch of the preceding months, signaling the transition towards autumn. The trend throughout the year showcases a gradual increase in daylight from 11 hours in January to a high of 13 hours from May to July, before gently declining as the year progresses. This consistent rhythm of daylight provides an inviting atmosphere for outdoor adventures, allowing visitors to fully embrace the vibrant beauty of Cat Ba's natural environment.
In August, Cat Ba, Vietnam experiences a mild and refreshing breeze, with an average wind speed of 4.4 m/s (10 mph). This gentle wind is characteristic of late summer, creating a pleasant atmosphere for outdoor activities. Notably, the wind speeds in August show a slight increase from the preceding months, aligning with a general upward trend observed from May to July. This progressive rise peaks in October at 6.0 m/s (13 mph), suggesting that while August remains inviting, the transitional months leading into fall bring even brisker conditions. Overall, this pattern underscores Cat Ba's dynamic coastal climate, where the winds play a vital role in shaping the island's allure throughout the year.
Weather in Cat Ba varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Cat Ba, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present starkly contrasting weather conditions. August is characterized by high temperatures, with a minimum of 25°C (78°F) and an average of 29°C (85°F), reaching as high as 34°C (93°F). This month is also marked by significant rainfall, totaling 567 mm (22.3 in) across approximately 25 days, resulting in high humidity levels at 89%. In contrast, January offers a much cooler climate, with temperatures ranging from a minimum of 10°C (50°F) to an average of 18°C (65°F), peaking at 24°C (75°F). Precipitation in January is minimal, with just 34 mm (1.3 in) over about 7 days and lower humidity at 66%. For more detailed information, you can check Cat Ba weather in January.
August and February present stark contrasts in weather conditions. August is characterized by high temperatures, with a minimum of 25°C (78°F) and an average of 29°C (85°F), peaking at 34°C (93°F). The month is also marked by significant rainfall, receiving 567 mm (22.3 in) over 25 days, and high humidity levels at 89%. In contrast, February offers a much cooler climate, with temperatures ranging from a minimum of 9°C (49°F) to an average of 18°C (65°F) and a maximum of 24°C (75°F). Precipitation is considerably less in February, totaling only 36 mm (1.4 in) over just 7 days, coupled with a lower humidity level of 71%. For a more detailed look, you can explore Cat Ba weather in February.
In August, the weather is characterized by high temperatures, with nightly lows around 25°C (78°F) and averages reaching 29°C (85°F), peaking at a sweltering 34°C (93°F). The month is also marked by significant rainfall, totaling 567 mm (22.3 in) over 25 days, coupled with high humidity levels of 89%, creating a muggy atmosphere. In contrast, March presents much milder conditions, with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 27°C (80°F) and an average of 21°C (70°F). Rainfall is much less pronounced, with only 50 mm (2.0 in) over 13 days and a comfortable humidity level of 69%. For more detailed weather insights, you can visit Cat Ba weather in March.
When comparing the weather in August and April, it's clear that August is significantly warmer and wetter. August boasts an average temperature of 29°C (85°F), with humidity levels reaching 89% and experiencing heavy rainfall totaling 567 mm (22.3 in) over 25 days. In contrast, April offers a milder climate with an average temperature of 24°C (75°F), lower humidity at 64%, and much less precipitation at 84 mm (3.3 in) across just 11 days. This makes April a much drier and more comfortable month compared to the sweltering and humid conditions typical of August. For more detailed insights into April weather, you can refer to Cat Ba weather in April.
When comparing the weather in August and May, August tends to be significantly warmer and more humid. August has temperatures that range from a minimum of 25°C (78°F) to a maximum of 34°C (93°F), with an average of 29°C (85°F). In contrast, May features slightly cooler temperatures, with a minimum of 20°C (69°F) and a maximum of 33°C (92°F), averaging 27°C (81°F). Additionally, August experiences much higher precipitation levels, with 567 mm (22.3 in) spread across 25 rainy days, compared to May’s 139 mm (5.5 in) over 15 days. The humidity in August is also elevated at 89%, whereas May's humidity is lower at 73%. For more detailed weather insights, you can check Cat Ba weather in May.
In comparing the weather of June and August, both months exhibit warm temperatures, though June tends to have slightly warmer average temperatures, reaching up to 30°C (86°F) compared to August's average of 29°C (85°F). Both months share similar maximum highs, peaking at around 34°C (94°F). However, August is significantly wetter, receiving 567 mm (22.3 in) of precipitation over 25 days, while June sees a much lighter rainfall of 194 mm (7.6 in) across just 15 days. Additionally, humidity levels are higher in August at 89%, compared to 81% in June. For those interested in more details about June conditions, you can check Cat Ba weather in June.
In comparison to July, August experiences slightly higher temperatures, with a minimum of 25°C and a maximum of 34°C, compared to July’s minimum of 26°C and maximum of 33°C. Both months have similar average temperatures of 29°C (85°F). However, August is significantly wetter, recording 567 mm of precipitation over 25 days, while July sees only 325 mm over 21 days. Humidity levels remain high in both months, at 89% for August and 90% for July, contributing to a similarly muggy atmosphere. For more detailed information about July weather, check out Cat Ba weather in July.
August typically experiences hotter weather with an average temperature of 29°C (85°F), peaking at a maximum of 34°C (93°F). It is also the wetter month, with heavy rainfall of 567 mm (22.3 in) over 25 days and high humidity at 89%. In contrast, September brings slightly cooler temperatures, with an average of 29°C (84°F) and a maximum of 33°C (92°F). Rainfall decreases significantly to 312 mm (12.3 in) across 23 days and the humidity drops to 82%. For a more detailed look at the conditions in September, you can check out Cat Ba weather in September.
August weather is characterized by higher temperatures and humidity, with minimums around 25°C (78°F) and averages reaching 29°C (85°F). The month experiences substantial rainfall, totaling 567 mm (22.3 in) over 25 days, contributing to a sticky and humid atmosphere with 89% humidity. In contrast, October sees a drop in temperatures: minimums decrease to 19°C (67°F) and average temperatures settle at 26°C (79°F). Precipitation also diminishes significantly to 284 mm (11.2 in) over 17 days, leading to a more comfortable climate with reduced humidity at 77%. For more details about the weather in October, check out Cat Ba weather in October.
August and November present starkly contrasting weather conditions. In August, temperatures are notably high, with a minimum of 25°C (78°F) and an average of 29°C (85°F), reaching a maximum of 34°C (93°F). This month is also marked by intense rainfall, accumulating 567 mm (22.3 in) over 25 days and high humidity levels at 89%. In contrast, November experiences much cooler temperatures, with a minimum of 14°C (57°F) and an average of 23°C (74°F), peaking at 28°C (83°F). Precipitation drops significantly to 53 mm (2.1 in) over just 10 days, and humidity levels decrease to 72%. These changes make November a more comfortable time for outdoor activities compared to the sweltering and rainy August. For a detailed look at the weather in November, visit Cat Ba weather in November.
August and December present strikingly different weather conditions. In August, temperatures are significantly warmer, ranging from a minimum of 25°C (78°F) to a maximum of 34°C (93°F), with an average temperature of 29°C (85°F). This month is also marked by high humidity at 89% and substantial rainfall, accumulating 567 mm (22.3 in) over 25 days. In contrast, December sees much cooler temperatures, with a minimum of 10°C (50°F) and a maximum of 26°C (80°F), averaging 19°C (67°F). Precipitation drops dramatically to just 42 mm (1.6 in) over 8 days, and humidity decreases to 71%. For a closer look at how December weather unfolds, check out Cat Ba weather in December.
As you explore Cat Ba in August, prepare for warm and humid conditions that set this month apart from others. With average temperatures hovering around 29°C (85°F) and a high of 34°C (93°F), the summer heat is palpable. However, unlike drier months, August brings significant rainfall, with about 25 days of precipitation totaling 567 mm (22.3 in), resulting in lush landscapes. The humidity levels ascend to around 89%, contributing to a tropical atmosphere that can be stifling yet invigorating. For a detailed insight into the climatic patterns throughout the year, check out Cat Ba Climate.