Last updated: August 21, 2025
In Haikou, China, May greets visitors with a delightful blend of warmth and occasional rain, showcasing a maximum temperature of 32°C (91°F) and an average of 20°C (69°F). Spotlighting the month’s variability, minimum temperatures can drop to a refreshing 7°C (46°F), appealing to those seeking respite from the heat. Rainfall is not uncommon, with an average of 65 mm (2.6 in) spread across about 8 days, contributing to the region's 62% humidity. This combination of temperatures and precipitation creates a dynamic May experience, perfectly suited for exploring Haikou’s vibrant landscapes.
In May, Haikou, China, begins to warm up significantly, showcasing a transition into late spring. With minimum temperatures around 7°C (46°F) and average highs reaching 32°C (91°F), the month is characterized by comfortable days and cooler nights. This pattern marks a noteworthy shift from the cooler months of January through April, where temperatures steadily rose. By the end of May, not only do the maximum temperatures hover around 32°C (91°F), making it perfect for outdoor activities, but there's also a noticeable increase in humidity, signaling the approach of summer. Overall, May serves as a delightful prelude to the sultry days ahead, inviting both locals and visitors to enjoy the vibrant atmosphere of Haikou.
In May, Haikou experiences a significant uptick in precipitation, with 65 mm (2.6 in) of rainfall spread over 8 days. This marks a slight increase from April's total of 64 mm, indicating the onset of the region’s wetter season. As spring fades into summer, the rain becomes more frequent, foreshadowing the experience of heavier downpours in the months that follow—like June's staggering 201 mm (7.9 in). The consistent rainfall in May plays a crucial role in nurturing the lush landscapes of Haikou, as the city transitions into the more humid and stormy days that characterize its summer months.
As spring transitions into the warm embrace of summer, May in Haikou, China, experiences a noticeable shift in humidity, averaging 62%. This marks a rise from the drier conditions of April, which recorded a lower 44%. The humidity begins to climb steadily as the month unfolds, paving the way for the intense, tropical wetness that characterizes the subsequent summer months. In contrast, colder months like January and February show much lower humidity levels at 58% and 65%, respectively. As the city prepares for the peak summer humidity that can soar above 80%, May serves as a crucial bridge, hinting at the sultry weather that residents will soon need to embrace.
As summer approaches, May in Haikou, China, marks a notable peak in UV exposure, registering a UV Index of 15. This extreme rating indicates that sun protection is essential, with a burn time of just 10 minutes before skin damage could occur. Notably, this trend of rising UV levels began in February and has continued through April, foreshadowing the intensity that peaks in May and carries into the hotter months. With June following closely at a UV Index of 14, residents and visitors alike should be aware of the increasing risk from harmful rays. It's crucial to take precautions during these months, ensuring that skin is protected against the sun's intensity. For more detailed insights, check out Haikou UV Index.
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May brings a delightful peak of sunshine to Haikou, China, with an impressive 333 hours of bright daylight, making it one of the sunniest months of the year. Following a steady ascent from January’s 225 hours, sunshine hours rise consistently through the spring, peaking in May before tapering off in the summer months. Notably, the transition from March's 322 hours to April's 300 hours hints at a brief dip, yet the optimism of May shines through as it outperforms both its predecessors and the subsequent summer months, like June’s 296 hours. This upward trend not only paints a picture of the sunny disposition of Haikou but also invites residents and visitors alike to bask in the vibrant outdoor activities that May has to offer.
In Haikou, China, the likelihood of enjoying sunny weather fluctuates significantly throughout the year. Notably, March stands out with a remarkable 76% chance of sunshine, while May sees a dip to 50%, indicating more variability as the summer months approach. Following May, the chance of sun plummets, with June experiencing only a 17% likelihood, plunging even further into the summer months of July and August. This trend suggests that while May still offers a decent chance for sunny days, the region transitions toward a wetter season, making it a unique time for those seeking a balance of sun and mild temperatures.
In Haikou, China, daylight duration experiences a distinct progression throughout the year, reflecting the transition from winter to summer. January begins with a modest 10 hours of daylight, gradually increasing to 11 hours in February. As spring unfolds, March and April enjoy an even longer 12 hours of luminous skies, creating a sense of anticipation for the warmer months ahead. May marks the beginning of summer, with daylight peaking at a delightful 13 hours, a duration that persists through June and July. Following this sun-soaked peak, daylight gently tapers back to 12 hours in August and returns to 11 hours in October. The cycle concludes with the shorter winter months, where November and December see daylight again capped at 10 hours. This pattern highlights the rhythmic beauty of Haikou’s seasonal changes, inviting locals and visitors alike to revel in the sun's embrace.
In May, the coastal city of Haikou, China experiences a gentle average wind speed of 3.7 m/s (8 mph), marking a slight increase from the calmer breezes of previous months. This uptick suggests a transition into a more dynamic weather pattern as spring approaches its end. Compared to the cooler March, which boasts the month's highest gusts at 4.2 m/s (9 mph), May's winds offer a softer caress ideal for outdoor activities. Following this peak, winds begin to taper off through the summer months of June and July, where they dip to around 2.5 m/s (6 mph) and 2.2 m/s (5 mph) respectively. Overall, May serves as a refreshing bridge between the brisk winds of early spring and the more tranquil summer air, inviting residents and visitors alike to revel in the mild and inviting breezes.
Weather in Haikou varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Haikou, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present contrasting weather conditions, reflecting the transition from spring to summer versus mid-winter. In May, temperatures range from a minimum of 7°C (46°F) to a maximum of 32°C (91°F), with an average temperature of 20°C (69°F), accompanied by 65 mm (2.6 in) of precipitation over about 8 days and a humidity level of 62%. In stark comparison, January sees a chillier climate, where temperatures drop to a minimum of -2°C (29°F) and rise to a maximum of 21°C (70°F), averaging at 10°C (50°F). The precipitation in January is lower, at 39 mm (1.5 in) over just 4 days, and the humidity is slightly lower at 58%. For more detailed information, visit Haikou weather in January.
May weather is characterized by warmer temperatures, with an average of 20°C (69°F) and highs reaching up to 32°C (91°F). This month sees more precipitation at 65 mm (2.6 in) over approximately 8 days, contributing to a relatively humid environment with an average humidity of 62%. In contrast, February features cooler temperatures, with an average of just 11°C (53°F) and maximums of 24°C (75°F). Precipitation is much lighter at 20 mm (0.8 in) over 3 days, and humidity levels are slightly higher at 65%. For more specific insights on February, you can check Haikou weather in February.
In comparing the weather between March and May, May generally enjoys warmer temperatures, with averages reaching around 20°C (69°F) compared to March's cooler average of 16°C (61°F). Additionally, while May can see maximum temperatures soar up to 32°C (91°F), March's highs cap at 29°C (84°F). Rainfall is considerably higher in May, with approximately 65 mm (2.6 in) over 8 days, in contrast to March’s modest 25 mm (1.0 in) spread over just 5 days. Furthermore, the humidity in May is notably greater at 62%, compared to March's more comfortable 44%. For more details, you can check Haikou weather in March.
May generally showcases warmer temperatures compared to April, with an average of 20°C (69°F) as opposed to April's average of 18°C (64°F). The maximum temperature in May reaches up to 32°C (91°F), slightly exceeding April's high of 31°C (88°F). Both months experience similar levels of precipitation, with May receiving 65 mm (2.6 in) and April 64 mm (2.5 in), although they share the same frequency of rainy days at 8. Humidity, however, is noticeably higher in May at 62%, compared to April's 44%, indicating a muggier atmosphere. For more detailed information on April weather, you can check out Haikou weather in April.
May and June present notable differences in weather patterns. In May, temperatures range from a minimum of 7°C (46°F) to a maximum of 32°C (91°F), with an average of 20°C (69°F). This month experiences moderate precipitation of 65 mm (2.6 in) over about 8 days and maintains a humidity level of 62%. In contrast, June sees a higher minimum temperature of 13°C (56°F) and a similar maximum of 31°C (87°F), with an average temperature of 21°C (71°F). However, it is significantly wetter, receiving 201 mm (7.9 in) of rainfall across 20 days, and the humidity rises to 82%. For more details, you can check Haikou weather in June.
In May, the weather tends to be warmer overall, with average temperatures ranging from a minimum of 7°C (46°F) to a maximum of 32°C (91°F) and an average of 20°C (69°F). The month experiences relatively moderate rainfall, totaling 65 mm (2.6 in) over approximately 8 days and humidity levels at 62%. In contrast, July sees a more humid environment with temperatures that only slightly vary, ranging from a minimum of 14°C (58°F) to a maximum of 29°C (84°F), while maintaining the same average of 21°C (69°F). However, July is significantly wetter, accumulating 271 mm (10.7 in) of precipitation over 26 days, leading to a much higher humidity level of 89%. For more detailed insights, check out Haikou weather in July.
May and August present distinct weather patterns. In May, temperatures range from a comfortable minimum of 7°C (46°F) to a maximum of 32°C (91°F), with an average of 20°C (69°F). The month sees moderate precipitation at 65 mm (2.6 in) over about 8 days, and humidity levels are a manageable 62%.
In contrast, August feels significantly warmer and wetter. The minimum temperature rises to 16°C (60°F), while the average is only slightly higher at 21°C (70°F), and the maximum dips to 29°C (85°F). However, this month is characterized by heavy rainfall, totaling 268 mm (10.5 in) across 26 days, leading to a high humidity level of 90%. This stark difference in rainfall and humidity makes August feel much more oppressive than May. For more details, you can check Haikou weather in August.
When comparing May and September weather, it’s clear that September tends to be more humid and wetter. In May, temperatures range from a minimum of 7°C (46°F) to a maximum of 32°C (91°F), with an average of 20°C (69°F) and only 65 mm (2.6 in) of precipitation over 8 days. In contrast, September experiences slightly higher minimum and maximum temperatures, ranging from 11°C (52°F) to 28°C (82°F), but with significantly more rainfall, totaling 161 mm (6.3 in) across 22 days. This increase in precipitation and humidity, which reaches 87% in September, makes the month feel quite different compared to the warmer and drier conditions of May. For a more detailed look at September weather patterns, visit Haikou weather in September.
In comparing the weather between May and October, May generally experiences warmer temperatures with an average high of 32°C (91°F) compared to October's 26°C (78°F). May also sees a lower frequency of rain, with only 8 days of precipitation and 65 mm (2.6 inches) total, while October has more rainy days (17) and higher total precipitation at 89 mm (3.5 inches). Additionally, October tends to be more humid, with an average humidity of 81%, compared to May's 62%. Overall, while May is warmer and drier, October presents a cooler and wetter climate that may influence outdoor activities. For more detailed insights, you can check Haikou weather in October.
May presents a warm and vibrant atmosphere characterized by temperatures ranging from a minimum of 7°C (46°F) to a maximum of 32°C (91°F), with an average of 20°C (69°F). This month sees an average precipitation of 65 mm (2.6 in) over approximately 8 days, and the humidity levels sit at a relatively moderate 62%. In contrast, November experiences cooler temperatures, with a minimum of 5°C (40°F), an average of 13°C (56°F), and a maximum of 24°C (75°F). Precipitation drops to 32 mm (1.3 in) over 6 days, and humidity increases to a higher level of 82%. The differences in temperature and humidity highlight the transition from spring warmth in May to the cooler, more humid conditions of November. For more detailed climate information, you can refer to Haikou weather in November.
May and December present contrasting weather conditions. In May, temperatures range from a minimum of 7°C (46°F) to a maximum of 32°C (91°F), with an average of 20°C (69°F), all accompanied by moderate humidity at 62%. The month sees about 65 mm (2.6 in) of precipitation across 8 days, indicating a relatively wet transition into summer. In contrast, December experiences cooler temperatures, with a minimum of -1°C (30°F) and an average of only 10°C (50°F), peaking at 21°C (69°F). It is drier than May, receiving only 23 mm (0.9 in) of precipitation over just 4 days, while humidity slightly increases to 73%. For a more detailed outlook, check Haikou weather in December.
As May sets in, Haikou experiences a delightful transition into warmer weather, with temperatures reaching a peak that significantly surpasses those of the preceding months. With an average temperature hovering around 20°C, this month marks the onset of milder conditions, bringing a refreshing escape from the cooler spring vibes. However, the rise in temperature also brings along increased humidity, averaging 62%, adding a touch of tropical warmth to the atmosphere. Although precipitation becomes more frequent, with eight rainy days, the overall rainfall of 65 mm is moderate, allowing for plenty of sunshine in between. For those planning a visit, May offers a vibrant taste of Haikou’s climate that truly distinguishes it from the cooler, drier months. Discover more about what to expect year-round at Haikou Climate.