Last updated: August 28, 2025
July in Ha Long, Vietnam is characterized by warm temperatures and high humidity, with daily highs reaching a sweltering 36°C (98°F) and an average temperature around 29°C (85°F). Visitors can expect a comfortable night with lows averaging 25°C (77°F). However, the weather is also marked by significant rainfall, with 287 mm (11.3 in) of precipitation spread across 24 days, making it one of the wetter months of the year. With humidity levels hovering around 90%, travelers should be prepared for a tropical experience, blending warmth with frequent, refreshing showers.
In July, Ha Long, Vietnam experiences a warm embrace, with temperatures ranging from a minimum of 25°C (77°F) to a peak of 36°C (98°F). This month marks a notable elevation in warmth, as the average temperature reaches a balmy 29°C (85°F), creating a sultry atmosphere perfect for exploration. The trend of increasing summer heat continues from the previous months, following June's high temperatures, and sets the stage for vibrant summertime activities. With humidity levels rising, July emphasizes the region's tropical characteristics, inviting visitors to enjoy its stunning landscapes while staying hydrated and cool.
In July, Ha Long, Vietnam experiences a significant increase in precipitation, with an impressive total of 287 mm (11.3 in), making it one of the wettest months of the year. This rainfall is distributed over 24 days, indicating a trend towards prolonged, albeit lighter, rain events compared to the intense downpours that characterize the following month of August, which skyrockets to 521 mm (20.5 in). The steady rise from January's modest 28 mm to July's peak highlights the transition into the monsoon season, where moisture-laden clouds dominate the region. As the summer weather intensifies, not only do the sheer volumes of rainfall increase, but the number of rainy days also rises, culminating in a lush, green landscape that defines Ha Long's stunning scenery during this time.
In Ha Long, Vietnam, July marks the peak of humidity, with a staggering 90% recorded, creating a sweltering atmosphere that can be quite overwhelming for visitors. This month follows a steady upward trend from June's 81%, reflecting not only the intensifying heat of summer but also the lush tropical environment that characterizes this coastal paradise. As the year progresses, humidity levels fluctuate, starting from a relatively comfortable 66% in January and peaking mid-year, with August barely trailing at 89%. The consistent increase leading into the summer months highlights Ha Long's tropical monsoon climate, where the moist air shapes both the weather and the experiences of those exploring its stunning limestone karsts and vibrant marine ecosystem. As the season advances into fall, humidity gradually declines, settling at a more moderate 82% in September.
In July, Ha Long experiences an extreme UV Index of 13, signaling the need for heightened sun protection during outdoor activities, with a burn time as short as 10 minutes. This month continues a trend established earlier in the year, as the UV Index has remained notably high, particularly from March through October, where it peaks at 13 from April to August. Such levels necessitate careful planning to avoid harmful exposure, making it critical for visitors to stay informed and prepared. This trend underscores Ha Long's reputation for its intense tropical sun, emphasizing the importance of sun safety measures. For more detailed information, you can visit the Ha Long UV Index.
UV Risk Categories
July in Ha Long, Vietnam, basks in an impressive 299 hours of sunshine, a continuation of the region's bright summer streak. Following a vibrant June, which captured 297 hours of sun, the warmth persists, marking July as one of the sunniest months of the year. As we transition into the latter half of summer, the sunshine begins to wane slightly in August, dropping to 266 hours, yet the lingering summer glow makes July an ideal time for exploration and outdoor adventures. The trend of increasing sunlight from the cooler months of January through May illustrates the peak of sunny delight in mid-summer, making Ha Long's July a radiant highlight in the seasonal calendar.
In Ha Long, Vietnam, the likelihood of sunny weather in July dips to 23%, setting it apart as one of the more overcast months. This trend aligns with the overall decrease in sunny days as summer progresses, peaking in May at 31% before falling sharply in June. Interestingly, July's sunless skies are in stark contrast to the rising chances seen earlier in the year, particularly in February when it reaches a promising 51%. As the rainy season approaches, visitors can expect a blend of cloudy days, with occasional bright spells, suggesting that while July may not boast the sunniest weather, it still holds its unique charm for those daring to explore its scenic beauty.
In Ha Long, Vietnam, July shines brightly with 13 hours of daylight, mirroring the previous months of May and June. This trend of extended daylight hours in the heart of summer allows for ample time to explore the breathtaking landscapes and vibrant culture of the region. What’s particularly notable is the gradual rise from January’s crisp 10 hours to the longest days of summer, showcasing a steady increase in sunlight as the year progresses. As August approaches, there’s a slight dip in daylight to 12 hours, signaling a gentle transition toward the cooler months. This rhythm of daylight enhances the allure of Ha Long, inviting visitors to bask in its beauty throughout the summer.
In July, Ha Long experiences a gentle average wind speed of 2.7 m/s (6 mph), a slight dip from the more invigorating breezes of the earlier summer months. This moderate wind reflects a seasonal trend where the humidity begins to rise, creating a more tranquil atmosphere ideal for leisure activities on the water. The preceding months, particularly May and June, bring a refreshing 3.7 m/s (8 mph) wind, offering invigorating conditions for sailing and exploration. As the summer progresses, the winds tend to soften, with August mirroring July's calm, emphasizing a transition towards the quieter, more serene side of Ha Long's summer charm before the winds pick up again in October.
Weather in Ha Long varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Ha Long, focusing on differences in temperature, rainfall, humidity, and UV levels.
In July, the weather is characterized by much warmer temperatures, with minimums around 25°C (77°F) and maximums soaring up to 36°C (98°F). The month is also marked by high humidity at 90% and significant rainfall, averaging 287 mm (11.3 in) over 24 days. In contrast, January offers a cooler climate, featuring an average temperature of 18°C (64°F) with minimums of 8°C (46°F) and maximums reaching 26°C (80°F). Additionally, January experiences far less precipitation, totaling only 28 mm (1.1 in) over just 5 days and a lower humidity level of 66%. For more information, you can visit Ha Long weather in January.
July and February present starkly contrasting weather patterns. In July, temperatures can soar with a minimum of 25°C (77°F), averaging around 29°C (85°F) and reaching a maximum of 36°C (98°F). This period is also characterized by high humidity at 90% and significant rainfall, with 287 mm (11.3 in) spread over 24 days. In contrast, February offers much cooler temperatures, ranging from a minimum of 7°C (45°F) to an average of 18°C (65°F) and a maximum of 27°C (80°F). The month sees considerably less precipitation, only 36 mm (1.4 in) over 7 days, and a lower humidity level of 71%. For more detailed information about February weather, you can check Ha Long weather in February.
July and March present a stark contrast in weather conditions. In July, temperatures range from a minimum of 25°C (77°F) to a scorching maximum of 36°C (98°F), with an average of 29°C (85°F). This month is characterized by high humidity at 90% and substantial rainfall, accumulating 287 mm (11.3 in) over 24 days, indicating a very wet and sultry environment. Conversely, March offers milder temperatures, with a minimum of 14°C (57°F) and a maximum of 31°C (88°F), resulting in a pleasant average of 21°C (71°F). Precipitation is significantly lower, at 52 mm (2.0 in) across 15 days, and humidity sits at a comfortable 69%. For more details on the conditions in March, you can visit Ha Long weather in March.
In July, the weather is significantly warmer and more humid compared to April, with average temperatures reaching 29°C (85°F) and a maximum of 36°C (98°F). This month also experiences heavy rainfall, totaling 287 mm (11.3 in) over 24 days, resulting in a stifling humidity level of 90%. In contrast, April offers a more moderate climate, with temperatures ranging from a minimum of 14°C (58°F) to a maximum of 33°C (91°F) and a much lighter precipitation of 91 mm (3.6 in) across 15 days. The lower humidity of 64% in April makes it a more comfortable time for outdoor activities. For more details on the weather in this month, you can visit Ha Long weather in April.
In comparing the weather between July and May, July tends to be hotter, with an average temperature of 29°C (85°F) and a minimum of 25°C (77°F), while May's average is slightly lower at 27°C (81°F) with a minimum of 19°C (66°F). Both months experience the same maximum temperature of 36°C (98°F). However, July sees significantly more rainfall, accumulating 287 mm (11.3 in) over 24 days, compared to May's 184 mm (7.2 in) over 19 days. Additionally, humidity levels are higher in July at 90%, compared to May's 73%. For more detailed insights on May weather, you can check Ha Long weather in May.
In June, temperatures are slightly cooler than in July, with a minimum of 23°C (74°F) and an average of 30°C (86°F), while July sees a minimum of 25°C (77°F) with an average of 29°C (85°F). Interestingly, July experiences more precipitation, totaling 287 mm (11.3 in) over 24 days, compared to June's 240 mm (9.4 in) across 20 days. Additionally, humidity levels are higher in July at 90%, compared to 81% in June. For more insights into June weather specifics, you can check Ha Long weather in June.
July and August exhibit quite similar temperatures, with July having a slightly higher average of 29°C (85°F) compared to August's 28°C (83°F). Both months experience maximum temperatures peaking at 36°C (97°F), indicating consistently hot weather. However, August sees a significant increase in precipitation, totaling 521 mm (20.5 in) over 28 days, compared to July's 287 mm (11.3 in) over 24 days. Humidity is also comparable, with July at 90% and August at 89%, suggesting that both months are characterized by a heavy, humid atmosphere. For more details on the weather during this time, you can refer to Ha Long weather in August.
In July, the weather is typically hotter and more humid, with minimum temperatures averaging around 25°C (77°F) and maximum temperatures reaching up to 36°C (98°F). This month also sees considerable rainfall, with an average precipitation of 287 mm (11.3 in) spread over 24 days, resulting in a high humidity of 90%. In contrast, September brings slightly cooler temperatures, with a minimum of 22°C (72°F) and a maximum of 35°C (95°F). While September still experiences some rain, the total precipitation decreases to 256 mm (10.1 in) over 23 days, and humidity levels drop to a more comfortable 82%. For more specific insights into September weather, you can check Ha Long weather in September.
In comparing the weather of July and October, July showcases much higher temperatures, with an average of 29°C (85°F) and peaks reaching up to 36°C (98°F). In contrast, October sees a milder average temperature of 25°C (77°F) and maximum temperatures around 34°C (94°F). Additionally, July experiences significantly more rainfall, with 287 mm (11.3 in) over 24 days, while October has 204 mm (8.0 in) spread across just 16 days. Humidity levels also drop from a sticky 90% in July to a more comfortable 77% in October, making this later month feel much more pleasant. For those interested in specific conditions, you can find more details at Ha Long weather in October.
In July, the weather is characterized by high temperatures, with minimums reaching 25°C (77°F) and maximums peaking at 36°C (98°F), making it quite hot and humid with an average of 29°C (85°F). The month experiences significant rainfall, totaling 287 mm (11.3 in) over 24 days, resulting in a stifling humidity of 90%. In contrast, November offers a much milder climate, where temperatures range from a minimum of 12°C (54°F) to a maximum of 30°C (86°F), with an average of 22°C (73°F). Precipitation drops dramatically to 43 mm (1.7 in) over just 9 days and humidity decreases to a more comfortable 72%. For more insights, you can check Ha Long weather in November.
In July, the weather is characterized by high temperatures, with a minimum of 25°C (77°F), an average of 29°C (85°F), and a maximum reaching up to 36°C (98°F). The month also sees significant precipitation, totaling 287 mm (11.3 in) over 24 days, and high humidity levels around 90%. In contrast, December offers a much cooler climate, with temperatures ranging from a minimum of 8°C (46°F) to an average of 18°C (66°F) and a maximum of 28°C (82°F). Precipitation during this month is considerably lower at 31 mm (1.2 in) over just 6 days, and the humidity drops to a more comfortable 71%. For a detailed comparison of December weather in Ha Long, you can check this link: Ha Long weather in December.
In July, Ha Long experiences a distinctly warm and humid climate, setting it apart from other months. With average temperatures hovering around 29°C (85°F), the heat can reach its peak at 36°C (98°F), making it one of the hottest months of the year. The high humidity, often reaching 90%, creates a sultry atmosphere, compounded by the frequent rain, as July sees precipitation on nearly 24 days with a total of 287 mm (11.3 in). This combination of heat and moisture underscores the tropical nature of Ha Long during this time, making it a unique yet challenging month for visitors. For more detailed insights on the climate throughout the year, check out Ha Long Climate.