Last updated: August 21, 2025
August in Hainan, China typically brings a warm tropical climate, with maximum temperatures reaching 29°C (85°F) and an average temperature of 20°C (69°F). Despite the pleasant warmth, temperatures can occasionally dip to a cool 6°C (42°F). This month also sees significant precipitation, totaling around 183 mm (7.2 in) over approximately 17 days, contributing to the region's high humidity levels at 87%. Visitors should prepare for a mix of sun and rain, making it essential to embrace both the vibrant summer heat and the refreshing tropical showers.
In Hainan, China, August offers a pleasant reprieve from the summer heat, with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 29°C (85°F). The average temperature settles around 20°C (69°F), creating a comfortable atmosphere ideal for outdoor activities. This month contrasts sharply with the frigid start of the year, where January plunges to a minimum of -38°C (-36°F). As the seasons progress, a noticeable warming trend is evident: from January's bitter cold to May's blossoming warmth, where temperatures climb above 30°C (86°F). By August, the climate stabilizes, offering a balance between the heat of summer months like July and the cooling transition towards autumn. The gradual rise and peak in temperatures hint at Hainan’s unique climatic shifts, making it a captivating destination for those seeking a summer escape.
In August, Hainan, China experiences its peak precipitation, recording 183 mm (7.2 in) of rain over 17 days. This significant rise in rainfall follows a steady increase from the drier months at the beginning of the year. Notably, August's precipitation is higher than the previous month, July, which already boasts substantial rainfall at 175 mm (6.9 in), indicating that Hainan's monsoon season is in full swing. The trend shows a clear escalation in wet weather as the summer progresses, with precipitation gradually intensifying from only 5 mm in January to this summer peak. This surge not only underscores the region's tropical climate but also points to the importance of August as a crucial month for water replenishment in Hainan's ecosystems.
In August, Hainan, China, experiences its peak humidity, reaching a notable 87%. This increase is part of a general trend throughout the summer months, where humidity levels surge dramatically, starting at 63% in March and climbing steadily through June and July. Following August’s peak, humidity begins to decline in September, settling at 85%, and continues to drop into the cooler months. The contrast between the high summer humidity and the relatively drier winter months is quite striking, highlighting Hainan's tropical climate and making August a particularly sultry time of year.
In August, the UV Index in Hainan, China remains notably high at 8, categorizing the exposure as very high with a burn time of only 15 minutes. This trend reflects a continuation of the intense sunlight experienced in the previous summer months, as July recorded an even higher index of 9. As the summer progresses into August, residents and visitors alike should take extra precautions to protect their skin from harmful UV rays, particularly since a decline in index value is expected in September. The shift from lower exposure categories in the earlier months of the year to this peak period emphasizes the importance of sun safety measures. For more detailed insights into UV levels throughout the year, visit Hainan UV Index.
UV Risk Categories
August in Hainan, China, shines brightly, offering 285 hours of glorious sunshine. As summer peaks, residents and visitors alike relish the warmth, though it marks a slight dip from the month's record-high July, which boasts 341 hours. This trend reflects a gradual decline in sunshine hours as the year transitions towards fall. Starting from 182 hours in January, the increase in sunlight throughout the spring and early summer highlights Hainan's charm as a sun-soaked paradise. The steady yet gradual decrease into autumn, with 284 hours anticipated in September, still promises plenty of radiant days, making August the perfect time to soak up the last vestiges of summer before the cooler months set in.
In Hainan, China, the chance of sunny weather sees a notable decline as summer progresses. August marks a particularly challenging month for sun-seekers, with only a 33% likelihood of clear skies. This dip follows a steady decrease from July's already low 27%, reflecting the region's trend toward increased rainfall during the peak summer months. While this period is often associated with vibrant summer activities, visitors might find themselves facing cloudy days more than they would in the earlier months of the year. As the calendar turns to September, the chances of sunshine slowly rise again, emphasizing the seasonal variations that define Hainan’s unique climate.
In August, Hainan basks in approximately 14 hours of daylight, a slight decline from the peak summer months of June and July, which enjoy consistent 15-hour days. This gradual reduction in daylight mirrors the transition into late summer, where the island begins to shift towards the shorter days of autumn. As the year progresses, daylight hours steadily diminish, starting from a mere 8 hours in January, rising through the spring, and reaching a high of 15 hours in the vibrant summer months. The overall trend showcases Hainan's inviting extended daylight during the warmer months, making it a sought-after destination for sun seekers and nature lovers alike.
In Hainan, China, August brings a gentle breeze with an average wind speed of 2.9 m/s (7 mph), reflecting a slight uptick from the previous months. This transitional summer month showcases a pattern where wind speeds peak in April at 4.0 m/s (9 mph), followed by a gradual decline through the warmer months of May to July. After the lightest winds of the summer, August experiences a subtle resurgence, aligning closely with the wind patterns of October and November. As the year progresses, the winds remain relatively consistent, with most months hovering around the 3.0 m/s (7 mph) mark, creating a pleasant atmosphere ideal for both relaxing beach strolls and invigorating water sports.
Weather in Hainan varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Hainan, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present strikingly different weather patterns. In August, temperatures range from a mild 6°C (42°F) at night to a warm average of 20°C (69°F) and can peak at a hot 29°C (85°F) during the day. This month is also marked by high humidity at 87% and significant rainfall, with 183 mm (7.2 in) falling over an average of 17 days. In stark contrast, January experiences frigid temperatures, with lows plummeting to -38°C (-36°F) and an average temperature of -20°C (-4°F), peaking at just -3°C (27°F). The winter month is much drier, receiving only 5 mm (0.2 in) of precipitation over a single day and with a lower humidity of 75%. For a closer look at weather conditions in January, you can check out Hainan weather in January.
August and February present stark contrasts in weather conditions. August sees milder temperatures ranging from a minimum of 6°C (42°F) to a maximum of 29°C (85°F), accompanied by significant rainfall totaling 183 mm (7.2 in) over 17 days, resulting in high humidity levels of 87%. In contrast, February is characterized by much colder temperatures, with lows plummeting to -33°C (-27°F) and highs only reaching up to 8°C (47°F). Precipitation is minimal in February, with just 6 mm (0.2 in) recorded over a single day, and humidity levels are lower at 70%. For more detailed information, you can refer to Hainan weather in February.
The weather in August is notably warmer and more humid compared to March. In August, temperatures range from a minimum of 6°C (42°F) to a maximum of 29°C (85°F), with an average of 20°C (69°F) and high humidity at 87%. Meanwhile, March experiences much colder conditions, with temperatures dropping as low as -31°C (-23°F) and averaging -3°C (26°F), peaking at 17°C (63°F). Furthermore, August sees significant precipitation, with 183 mm (7.2 in) over 17 days, while March has minimal rainfall of just 13 mm (0.5 in) across 3 days. For more detailed information about March weather, you can visit Hainan weather in March.
August and April present contrasting weather patterns, showcasing the transition from the cooler beginnings of spring to the warmth of late summer. In April, temperatures can fluctuate significantly, with a minimum of -9°C (16°F), an average of 7°C (44°F), and a maximum reaching 25°C (78°F). The month experiences relatively low precipitation, totaling 32 mm (1.3 in) over just 4 days, accompanied by a humidity level of 59%. In stark contrast, August is much warmer, with a minimum temperature of 6°C (42°F), an average of 20°C (69°F), and a maximum of 29°C (85°F). This month sees considerably more rainfall, accumulating 183 mm (7.2 in) over 17 days, and the humidity rises to a high 87%. For a deeper insight into the weather variations, you can check out this link: Hainan weather in April.
August and May present notably different weather characteristics. In August, temperatures range from a minimum of 6°C (42°F) to a maximum of 29°C (85°F), with an average of 20°C (69°F). The month is marked by high humidity at 87% and significant rainfall, totaling 183 mm (7.2 in) over 17 days. In contrast, May boasts a broader temperature range from a chilly 0°C (33°F) to a warm 31°C (89°F), with a lower average of 14°C (58°F). This month experiences much less precipitation, with only 72 mm (2.8 in) over 11 days and lower humidity at 61%. For more detailed information, you can visit Hainan weather in May.
When comparing the weather in August and June, we see distinct differences in temperature and precipitation patterns. August features a more moderate temperature range, with average temperatures around 20°C (69°F) and maximums reaching 29°C (85°F). In contrast, June can get quite warm, with maximum temperatures soaring to 36°C (97°F) and an average of 19°C (67°F). Regarding precipitation, August is wetter, receiving 183 mm (7.2 in) over 17 days, while June has less rainfall at 126 mm (4.9 in) across 15 days. Additionally, humidity tends to be higher in August at 87%, compared to June's 79%. For a closer look at June's climate, you can visit Hainan weather in June.
In comparing the weather between August and July, we see notable differences in temperature and precipitation patterns. August presents a cooler climate, with average temperatures ranging from a minimum of 6°C (42°F) to a maximum of 29°C (85°F), while July enjoys warmer averages, with temperatures ranging from 13°C (57°F) to a maximum of 34°C (93°F). Both months experience similar precipitation levels, with August slightly higher at 183 mm (7.2 in) compared to July's 175 mm (6.9 in). Additionally, humidity remains high in both months, with August at 87% and July at 84%. For detailed insights on July's weather conditions, you can visit Hainan weather in July.
August and September exhibit distinct differences in weather patterns. In August, temperatures range from a minimum of 6°C (42°F) to a maximum of 29°C (85°F), with an average of 20°C (69°F). The month experiences significant rainfall, accumulating 183 mm (7.2 in) across 17 days, and humidity hovers at a high 87%. In contrast, September sees a drop in the average temperature to 15°C (59°F), with minimums dipping to 0°C (33°F) and maximums reaching 28°C (83°F). Precipitation decreases considerably to 103 mm (4.1 in) over only 9 days, and humidity remains relatively constant at 85%. For more information, check out Hainan weather in September.
In comparing the weather between August and October, one can observe a notable shift in temperatures and precipitation. August features a warmer climate, with average temperatures around 20°C (69°F) and maximums reaching up to 29°C (85°F), alongside significantly higher humidity at 87%. In contrast, October experiences a much cooler environment, where temperatures can dip as low as -10°C (15°F) and average around 6°C (42°F). Remarkably, October also sees a dramatic reduction in precipitation, with only 22 mm (0.9 in) over 4 days, compared to August's 183 mm (7.2 in) spread over 17 days. For those interested in exploring more about October weather specifics, you can check out Hainan weather in October.
August and November present a stark contrast in weather conditions. In August, temperatures typically range from a mild 6°C (42°F) at night to a warm 29°C (85°F) during the day, accompanied by high humidity at 87% and significant rainfall of 183 mm (7.2 in) over 17 days. In contrast, November experiences a much colder climate, with temperatures plunging to a minimum of -25°C (-14°F) and averaging -6°C (21°F), while the maximum only reaches 14°C (57°F). Precipitation dramatically decreases to just 22 mm (0.9 in) over 4 days, and humidity drops to 61%. This shift from warm, wet August days to the frigid and drier conditions of November highlights the changing seasons. For more on weather specifics, you can visit Hainan weather in November.
August and December showcase starkly contrasting weather conditions. In August, temperatures range from a mild minimum of 6°C (42°F) to a warm maximum of 29°C (85°F), with an average of 20°C (69°F). The month is characterized by high humidity at 87% and considerable rainfall, totaling 183 mm (7.2 in) over 17 days. In contrast, December experiences frigid temperatures, with a chilling minimum of -32°C (-26°F) and an average of -18°C (0°F), peaking at just 6°C (43°F). Precipitation drops significantly to only 9 mm (0.3 in) across 2 days, and humidity decreases to 60%. For more details on December weather, you can refer to Hainan weather in December.
As August settles over Hainan, the weather becomes distinctly warmer and more humid compared to the previous months, creating an atmosphere that is both lush and vibrant. With temperatures consistently reaching up to 29°C (85°F) and averaging around 20°C (69°F), visitors can expect a more tropical experience. This month also brings about a notable increase in rainfall, with 183 mm (7.2 in) of precipitation spread across about 17 days, contributing to the island's lush landscapes. The humidity peaks at an average of 87%, making the air feel rich and invigorating. For those looking to explore everything the island has to offer despite the rain, understanding the nuances of August weather is essential. For more detailed insights, check out our guide on Hainan Climate.