Last updated: August 28, 2025
In May, Sa Pa, Vietnam experiences a dynamic climate, characterized by a maximum temperature reaching up to 34°C (93°F) and an average of 23°C (74°F), providing a warm atmosphere for visitors. However, the region also sees a significant amount of precipitation, totaling 172 mm (6.8 in) spread over 26 days, creating lush landscapes that are emblematic of this area. With an average humidity of 69%, the environment can feel quite humid, adding to the vibrant charm of Sa Pa's stunning vistas. Whether you're trekking through terraced rice fields or enjoying the local culture, May offers a unique blend of warmth and rejuvenating rain.
In May, Sa Pa, Vietnam, experiences delightful temperatures that mark the transition into summer. With minimums around 13°C (56°F) and averages rising to 23°C (74°F), the days become warmer and more inviting, while the maximums reach a sizzling 34°C (93°F). This month stands out as the time when temperatures begin to peak compared to the previous months, showcasing a significant leap from April's figures. As the region sheds the coolness of early spring, May invites visitors to explore its lush landscapes in comfortable warmth, setting the stage for vibrant outdoor adventures and breathtaking views. Travelers can embrace the flourishing scenery, knowing that the pleasant climate offers the perfect backdrop for trekking and cultural experiences alike.
In Sa Pa, Vietnam, May marks a significant peak in precipitation, with 172 mm (6.8 in) of rain falling over approximately 26 days. This underscores a shift from the lighter showers of early spring, as the region transitions into the lush, wet landscape characteristic of the monsoon season. The rainfall in May sets the stage for the even more substantial deluges that follow in June and July, where totals soar to 303 mm (11.9 in) and 350 mm (13.8 in), respectively. The increase not only highlights May as a pivotal month for precipitation but also emphasizes the region's verdant transformation, making it an ideal time for nature enthusiasts to witness the vibrant blooming of flora amidst the rhythmic dance of raindrops.
As May arrives in Sa Pa, Vietnam, the weather begins to shift toward the more humid side of the spectrum, with humidity levels reaching 69%. This uptick marks a notable increase from April's 53%, setting the stage for the wet season ahead. Generally, humidity in Sa Pa tends to rise steadily from spring into summer, with June and July witnessing peak conditions at 83% and a sweltering 90% respectively. Such trends emphasize Sa Pa's transition from the refreshing, cooler months of early spring, where humidity is more manageable, to the lush, moisture-laden environment typical of summer. Travelers should prepare for the invigorating, albeit damp, atmosphere that May brings, as the region's verdant landscapes flourish under the humidity's embrace.
As May unfolds in Sa Pa, Vietnam, the UV Index escalates to an extreme level of 15, indicating a significant increase in sun exposure risk. With a burn time of just 10 minutes, this month marks the peak intensity of UV radiation, reminiscent of the preceding months of March and April, which also registered a high index of 13. The trends highlight a consistent pattern throughout the late spring, with UV levels remaining in the extreme category until July. As outdoor activities become more inviting, it's crucial to stay aware and protect your skin. For further details on UV exposure considerations in Sa Pa, check out the Sa Pa UV Index.
UV Risk Categories
In May, Sa Pa, Vietnam, basks in a remarkable 315 hours of sunshine, marking it as the sunniest month of the year. This notable increase in brightness is a part of a pleasing trend, where the hours of sunlight gradually rise from the depths of winter, starting with a modest 180 hours in January. As spring unfolds, sunshine hours climb steadily, peaking in May before tapering off slightly in the summer months. This delightful month not only signifies a vibrant transition but also invites travelers to experience the breathtaking landscapes of Sa Pa bathed in golden light, making it a prime time for adventure and exploration.
In Sa Pa, Vietnam, the likelihood of sunny weather in May stands at 33%, mirroring the sunshine chances in both January and April. This moderate probability indicates a consistent pattern of overcast conditions typical for this region during the early months of the year. The sunniest month is March, boasting a peak likelihood of 45%, followed by a notable drop in sunny days as the rainy season approaches in June, where the forecast plummets to just 10%. As the year progresses, it becomes increasingly evident that if you’re seeking sun in Sa Pa, your best bet is to visit between January and March, with May offering only a glimpse of brighter skies before the summer rains set in.
In Sa Pa, Vietnam, the length of daylight evolves beautifully throughout the year, showcasing a gradual increase during the first half. Starting with approximately 10 hours in January, each month brings an additional hour, peaking at 13 hours by May. As spring transitions into summer, these longer days persist, fostering vibrant outdoor activities and explorations in the stunning landscapes. However, starting in late summer, daylight begins to wane slightly, tapering back to 12 hours in August and continuing to decline gradually into the winter months. This elegant rhythm of light not only marks the changing seasons but also enhances the region’s lush natural beauty, making Sa Pa an enchanting destination year-round.
As spring transitions into summer, May in Sa Pa, Vietnam, showcases a consistent breeze with an average wind speed of 1.3 m/s (3 mph). This marks a subtle rise from the slightly lower speeds of the preceding months, creating a refreshing atmosphere that complements the blooming landscape. The wind remains gentle but steady, reminiscent of the months that precede it, with only minor fluctuations noted in April and June. Overall, May's winds are emblematic of a harmonious transition, gently ushering in warmer days while maintaining the serene charm that Sa Pa is renowned for.
Weather in Sa Pa varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Sa Pa, focusing on differences in temperature, rainfall, humidity, and UV levels.
In May, temperatures in Sa Pa range from a minimum of 13°C (56°F) to a maximum of 34°C (93°F), with an average of 23°C (74°F). This month is marked by frequent rain, totaling 172 mm (6.8 in) over approximately 26 days, contributing to a humidity level of 69%. In contrast, January offers cooler weather, with temperatures varying from a minimum of 2°C (35°F) to a maximum of 26°C (78°F) and an average of 14°C (57°F). Precipitation in January is lower, at 101 mm (4.0 in) over about 13 days, along with a relative humidity of 57%. For more details on January weather in Sa Pa, you can check this link: Sa Pa weather in January.
The comparison between May and February weather reveals distinct seasonal differences. May typically features much warmer temperatures, with a minimum of 13°C (56°F) and an average of 23°C (74°F), reaching highs of up to 34°C (93°F). In contrast, February is significantly cooler, with a minimum temperature of 4°C (39°F) and an average of 14°C (58°F), peaking at 27°C (82°F). Furthermore, May experiences higher precipitation, accumulating 172 mm (6.8 in) over 26 days, while February sees less rainfall, totaling 88 mm (3.5 in) over 17 days. The humidity levels are slightly higher in May at 69%, compared to February's 67%, adding to the overall warmth of the late spring month. For more specific details about February weather in this region, you can visit Sa Pa weather in February.
In comparing the weather of May and March, May generally presents warmer temperatures, with a minimum of 13°C (56°F) and an average of 23°C (74°F), reaching up to a maximum of 34°C (93°F). In contrast, March starts cooler, featuring a minimum of 10°C (50°F), an average of 18°C (65°F), and a maximum of 30°C (86°F). Both months experience quite a bit of rain, with May receiving 172 mm over 26 days and March slightly less at 162 mm over 22 days. Additionally, May has higher humidity levels at 69%, compared to March's 58%. For a more detailed view of weather patterns during March, you can check Sa Pa weather in March.
In comparing the weather conditions of April and May, a noticeable increase in temperature is evident in May, with a minimum of 13°C and an average of 23°C, compared to April's 8°C minimum and average of 20°C. Although May features only slightly higher maximum temperatures at 34°C, it sees a marked decrease in precipitation days—26 days in May versus 21 days in April. Interestingly, April experiences higher total rainfall at 218 mm despite its shorter rainy season, contributing to the lower humidity of 53% compared to May’s 69%. For more details on April weather, you can check Sa Pa weather in April.
May and June weather in Sa Pa exhibit distinct differences. In May, temperatures range from a minimum of 13°C (56°F) to a maximum of 34°C (93°F), with an average of 23°C (74°F). The month sees significant rainfall, with 172 mm (6.8 in) of precipitation spread over 26 days and a humidity level of 69%. In contrast, June experiences warmer temperatures, with a minimum of 18°C (65°F) and a maximum of 31°C (89°F), averaging 24°C (75°F). However, it also brings increased rainfall, totaling 303 mm (11.9 in) over 29 days, and a higher humidity of 83%. For more detailed information, check out Sa Pa weather in June.
May and July exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 13°C (56°F) to a maximum of 34°C (93°F), with an average of 23°C (74°F). The month is characterized by significant rainfall, accumulating to 172 mm (6.8 in) across 26 days and a humidity level of 69%. In contrast, July presents warmer conditions with minimum temperatures of 20°C (68°F) and a maximum of 32°C (90°F), while maintaining an average temperature of 24°C (75°F). Rainfall is considerably higher in July, totaling 350 mm (13.8 in) over 30 days, leading to increased humidity levels of 90%. For more detailed insights into the weather during this month, visit Sa Pa weather in July.
May and August present distinct weather patterns, with May typically being warmer and drier compared to August. In May, temperatures range from a mild 13°C (56°F) to a peak of 34°C (93°F), accompanied by an average precipitation of 172 mm (6.8 in) spread over 26 days and a humidity level of 69%. Conversely, August sees higher humidity at 90%, with temperatures varying from a minimum of 20°C (68°F) to a maximum of 31°C (89°F). However, it is significantly wetter, with precipitation amounting to 455 mm (17.9 in) over 29 days. For more details on the August weather, you can refer to Sa Pa weather in August.
May and September exhibit notable differences in weather patterns while maintaining similar average temperatures. May typically sees a minimum temperature of 13°C (56°F) and a maximum of 34°C (93°F), with average conditions around 23°C (74°F). In contrast, September starts slightly warmer at a minimum of 15°C (59°F) but peaks at a lower maximum of 31°C (88°F), still averaging 23°C (74°F). While May experiences 172 mm (6.8 in) of precipitation over 26 days, September records a higher rainfall of 208 mm (8.2 in) across 25 days, accompanied by increased humidity at 81%, compared to 69% in May. For more detailed insights, you can visit Sa Pa weather in September.
May and October present distinct weather patterns. In May, temperatures typically range from a minimum of 13°C (56°F) to a maximum of 34°C (93°F), with an enjoyable average of 23°C (74°F). However, it's also the wettest month, receiving 172 mm (6.8 in) of precipitation over 26 days, alongside a humidity level of 69%. In contrast, October sees slightly cooler temperatures with a minimum of 12°C (54°F), an average of 20°C (69°F), and a maximum of 29°C (84°F). This month receives a bit more rainfall, totaling 178 mm (7.0 in) across 21 days, and experiences higher humidity at 75%. For further insights on October's climate, visit Sa Pa weather in October.
In comparing the weather between May and November, May is characterized by warmer temperatures, with nighttime lows averaging around 13°C (56°F) and daytime highs reaching up to 34°C (93°F). The month is also quite wet, receiving approximately 172 mm (6.8 in) of precipitation over 26 days, resulting in a humidity level of 69%. In contrast, November experiences cooler temperatures, with minimums around 8°C (47°F) and maximums peaking at 27°C (80°F), showcasing a much milder climate. The precipitation drops significantly to about 66 mm (2.6 in) spread over 14 days, and humidity increases slightly to 74%. For more specific details, you can check out Sa Pa weather in November.
May and December present strikingly different weather patterns. In May, temperatures range from a minimum of 13°C (56°F) to a maximum of 34°C (93°F), with an average of 23°C (74°F). This month is characterized by significant rainfall, accumulating 172 mm (6.8 in) over 26 days, contributing to a humid environment with 69% humidity. In contrast, December offers a cooler climate, with temperatures dipping to a minimum of 2°C (36°F) and reaching a maximum of 26°C (78°F), averaging 14°C (57°F). Rainfall is less frequent, totaling 65 mm (2.6 in) across just 10 days, while humidity remains constant at 69%. For more detailed insights, you can explore Sa Pa weather in December.
In May, Sa Pa transforms with a blend of warmer temperatures and increased humidity, making it noticeably different from the cooler months that precede it. As the maximum temperatures rise to around 34°C, visitors can expect a vibrant atmosphere, although the frequent rainfall—spanning 26 days—adds a refreshing twist to the sunny days. The average temperature hovers near a pleasant 23°C, allowing for comfortable exploration despite the occasional shower. Travelers are encouraged to embrace this lush, verdant season, as the landscape flourishes under the 69% humidity and nourishing rains. For a deeper understanding of what to expect, take a look at the full details on the Sa Pa Climate.