Last updated: August 27, 2025
In May, Bangkok, Thailand experiences a blend of sweltering heat and occasional rainfall, making it one of the more dynamic months of the year. With maximum temperatures reaching up to 40°C (103°F) and an average of 30°C (87°F), visitors should be prepared for a warm climate. The minimum temperature of 23°C (74°F) offers a brief respite in the cooler evenings. However, this month is also characterized by significant humidity, averaging around 80%, which can heighten the sense of discomfort. Rain is quite common during May, with 142 mm (5.6 in) of precipitation spread across 19 days, bringing much-needed relief from the heat. Travelers should pack accordingly to enjoy the vibrant atmosphere of Bangkok while staying comfortable in the fluctuating weather conditions.
As May arrives in Bangkok, temperatures begin to peak, signaling the start of the sweltering summer months. The minimum temperature climbs to a warm 23°C (74°F), while the average temperature holds steady at 30°C (87°F). However, what catches the eye is the maximum temperature, soaring to a stunning 40°C (103°F), marking this month as one of the hottest in the year. This upward trend in temperature from previous months is evident, demonstrating a gradual shift from the milder conditions of April. Visitors and locals alike should prepare for the heat, embracing the vibrant energy of the city as it basks in the sun, making it the perfect time for evening strolls and exploring Bangkok’s bustling night markets.
In May, Bangkok experiences a significant uptick in precipitation, with 142 mm (5.6 in) of rain falling over 19 days, making it one of the wettest months of the year. This marks a striking increase from April's total of 107 mm (4.2 in), highlighting the transition into the monsoon season. The frequency of rainfall in May also intensifies, with nearly two-thirds of the month seeing wet weather. As the city prepares for even heavier downpours in the subsequent months, the lush greenery of Bangkok thrives, painting the urban landscape in vibrant hues. This blend of rain and the tropical climate not only nurtures the local ecology but also invigorates the city’s dynamic atmosphere.
As Bangkok transitions into May, the humidity reaches a noteworthy 80%, marking a distinct rise from the previous months. This increase is part of a broader trend, with humidity steadily climbing since April. In fact, as the hot season peaks, May acts as a precursor to the sultry and muggy conditions that define the subsequent months, such as June and July, where humidity escalates further to 85% and 86%, respectively. It’s clear that May serves as a critical point in Bangkok’s climate, where the air becomes palpably dense, setting the stage for the tropical monsoon season ahead.
In May, Bangkok experiences one of its peak UV Index levels, soaring to 14, which falls under the extreme exposure category. This intensity matches the indexes recorded in March, April, and July, signaling a consistent trend of heightened sun exposure during these months. With a rapid burn time of just 10 minutes, it's crucial for residents and visitors alike to take necessary precautions against harmful UV rays. This pattern persists into the following months, emphasizing the need for proper sun protection strategies. As you plan your outdoor activities, be mindful of the sun's strength—learn more about the UV conditions to stay safe by checking out Bangkok UV Index.
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May in Bangkok shines brightly with 321 hours of sunshine, marking a slight dip from the peak of 336 hours in March, yet remaining vibrant and warm. This month continues the trend of sun-soaked days typical for the region, nestled between the dry season's end and the onset of the rainy season. Following April’s robust 322 hours, May's sunshine is still abundant, ensuring plenty of opportunities for outdoor exploration and cultural experiences. Interestingly, as the year progresses towards the monsoon months, sunshine hours tend to wane, with June bringing 302 hours and July dropping further to 290 hours. Embrace the warmth of May while it lasts, as Bangkok transitions into its lush, verdant rainy season.
In Bangkok, Thailand, May heralds a noticeable shift in weather patterns as the chance of sunny days dips to 33%, marking a stark contrast to the drier months earlier in the year. Following the tail end of a notably sunny February, which boasts a high of 76%, the likelihood of sunny weather trails off significantly by April with only 18% clear skies, and continues to decline into the monsoon season. This trend suggests that while May may still offer some glimpses of sunshine, travelers should be prepared for more cloudy days and potential rain as the city transitions into the wetter months ahead.
In Bangkok, Thailand, the daylight duration exhibits interesting seasonal patterns throughout the year. From January to February, the city enjoys a consistent 11 hours of daylight, creating a gentle transition into spring. As March arrives, daylight begins to stretch to 12 hours, signaling the approach of warmer months. This extension continues through April and remains steady from May to September, providing ample sunlight to bask in the tropical warmth. As the year progresses into October, the daylight once again shortens, returning to 11 hours and continuing this trend until December. Overall, the sunlight experience in Bangkok highlights a dynamic balance between consistent daylight and seasonal changes, fostering the vibrant life of this bustling metropolis.
In Bangkok, Thailand, the winds in May are characterized by a gentle average speed of 2.4 m/s (5 mph), mirroring the slightly breezier conditions seen in February. As the sweltering heat of April gives way to the onset of the rainy season, the wind patterns remain relatively stable. This month stands out amidst a transition, depicting a blend of calm and refreshing air, notably before the winds pick up in June and July, where they reach 3.0 m/s (7 mph). Overall, May serves as a pleasant interlude, balancing warmth with serene breezes that keep the city’s atmosphere inviting as it prepares for the impending monsoons.
Weather in Bangkok varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Bangkok, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between May and January, it’s clear that May tends to be much warmer and more humid. Average temperatures in May reach up to 30°C (87°F), with a high of 40°C (103°F), accompanied by high humidity levels at 80%. Additionally, May experiences significant precipitation, averaging 142 mm (5.6 in) over 19 days. In contrast, January offers cooler temperatures, with an average of 27°C (81°F) and a maximum of 35°C (94°F). Notably, January is much drier, with only 29 mm (1.1 in) of precipitation over just 3 days and lower humidity at 59%. For a more detailed view, you can check out Bangkok weather in January.
When comparing the weather in May and February, significant differences emerge in temperature, precipitation, and humidity. In May, temperatures soar with a minimum of 23°C (74°F) and can reach up to 40°C (103°F), averaging around 30°C (87°F). Additionally, May experiences much higher humidity at 80% and significant rainfall, with 142 mm (5.6 in) over 19 days. In stark contrast, February has milder temperatures, ranging from a minimum of 19°C (66°F) to a maximum of 35°C (96°F), with an average of 28°C (82°F). The month also sees considerably less rainfall, totaling only 14 mm (0.5 in) over 3 days, and lower humidity at 58%. For more detailed information, you can check out Bangkok weather in February.
In comparing the weather of May and March, it becomes evident that May tends to be hotter and more humid. May boasts a minimum temperature of 23°C (74°F) and averages around 30°C (87°F), with maximum temperatures reaching up to 40°C (103°F). In contrast, March has similar average highs of 30°C (86°F) but peaks at a slightly cooler 37°C (99°F). Additionally, May experiences significantly more rainfall, with 142 mm (5.6 in) over 19 days, compared to March's 44 mm (1.7 in) over just 5 days. This results in a much higher humidity level of 80% in May, compared to March’s 61%. For more detailed information, you can visit Bangkok weather in March.
In comparing the weather of May and April, it is evident that May tends to be slightly warmer, with minimum temperatures around 23°C (74°F) compared to April's 21°C (70°F). Both months have the same average temperature of 30°C (87°F), but May reaches a higher maximum temperature of 40°C (103°F) versus April's 38°C (100°F). In terms of precipitation, May experiences more rain, with 142 mm (5.6 in) over 19 days, while April records 107 mm (4.2 in) over 12 days, making May a wetter month overall. Furthermore, the humidity is higher in May at 80%, compared to April's 70%. For more details, you can check Bangkok weather in April.
May and June weather in Bangkok show some notable similarities and differences. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 40°C (103°F), with an average of 30°C (87°F). Conversely, in June, the temperatures are slightly warmer at a minimum of 25°C (78°F) and a maximum of 37°C (99°F), while maintaining the same average of 30°C (86°F). Precipitation in May is higher at 142 mm (5.6 in) over 19 days, compared to June's 112 mm (4.4 in) spread over 22 days. Additionally, humidity levels also see a slight increase in June at 85% compared to 80% in May. For more detailed insights, visit Bangkok weather in June.
In May, temperatures in Bangkok range from a minimum of 23°C (74°F) to a maximum of 40°C (103°F), with an average temperature of 30°C (87°F). The month experiences significant precipitation as well, with 142 mm (5.6 in) of rain over 19 days and an average humidity of 80%. In comparison, July sees slightly warmer nights with a minimum temperature of 25°C (78°F) and a more moderate maximum of 37°C (99°F), averaging out at 29°C (85°F). However, July experiences even higher rainfall, totaling 159 mm (6.2 in) over 26 days, and increased humidity at 86%. For more detailed information, you can visit Bangkok weather in July.
In May, the weather is characterized by high temperatures, with a minimum of 23°C (74°F) and an average of 30°C (87°F), while it can reach up to a scorching 40°C (103°F). The month also experiences significant rainfall, with 142 mm (5.6 in) spread across 19 days and humidity levels around 80%. In contrast, August brings slightly warmer nights with a minimum temperature of 25°C (77°F) and a lower average temperature of 29°C (85°F), peaking at 37°C (99°F). Precipitation increases to 163 mm (6.4 in) over 23 days and humidity rises to 88%. For more detailed information about August weather, visit Bangkok weather in August.
In May, temperatures in Bangkok typically range from a minimum of 23°C (74°F) to a maximum of 40°C (103°F), with an average temperature of 30°C (87°F). The month experiences significant rainfall, averaging 142 mm (5.6 in) over 19 days, coupled with high humidity levels at 80%. In contrast, September sees slightly warmer temperatures, with a minimum of 24°C (76°F) and a maximum of 36°C (97°F), but with a lower average of 29°C (84°F). Rainfall is considerably higher, totaling 245 mm (9.6 in) over 24 days, and humidity increases to 87%. For more detailed information, visit Bangkok weather in September.
In comparing the weather of May and October, both months experience similar minimum temperatures, hovering around 23°C (74°F). However, May tends to be hotter on average, with daily temperatures reaching an average of 30°C (87°F) and a maximum of 40°C (103°F). In contrast, October sees slightly cooler averages at 29°C (84°F) and a maximum of 35°C (96°F). Precipitation levels are notably higher in October, with 250 mm (9.9 in) of rain falling over 21 days, compared to May's 142 mm (5.6 in) over 19 days. Humidity also remains high in both months, with October slightly higher at 83% compared to May's 80%. For more details, you can check Bangkok weather in October.
May typically experiences warmer temperatures than November, with daily averages reaching up to 30°C (87°F) and maximums soaring to 40°C (103°F). In contrast, November has a milder climate, averaging 28°C (83°F) and peaking at 35°C (95°F). Additionally, May tends to be much wetter, receiving 142 mm (5.6 in) of rain over 19 days, whereas November enjoys significantly less rainfall at 61 mm (2.4 in) across just 9 days. Humidity levels remain fairly similar, with May at 80% and November slightly lower at 78%. For more detailed information, visit Bangkok weather in November.
In May, the weather is characterized by high temperatures, with a minimum of 23°C (74°F) and an average of 30°C (87°F), peaking at a scorching 40°C (103°F). The month is also marked by significant rainfall, totaling 142 mm (5.6 in) over about 19 days, along with high humidity levels at 80%. In contrast, December brings milder conditions, with temperatures ranging from a minimum of 15°C (59°F) to an average of 27°C (80°F), and a maximum of 35°C (95°F). Precipitation drastically decreases to just 24 mm (0.9 in) over only 2 days, and humidity also drops to 70%. The shift from May's heat and humidity to December's cooler and drier climate is quite pronounced, making December a more comfortable time to visit. For more details on December weather, you can visit Bangkok weather in December.
As May unfolds in Bangkok, the city experiences a unique blend of intense heat and humidity that sets it apart from other months. With temperatures soaring to maximums around 40°C (103°F), the average warmth remains a sweltering 30°C (87°F), while the nighttime brings only slight relief. Rainfall becomes more prevalent, with 19 days of precipitation contributing to a total of 142 mm (5.6 in), making May one of the wetter months. The 80% humidity often intensifies the heat, creating a dense atmosphere that can leave visitors feeling drenched. For those curious about the broader patterns to expect throughout the year, a deeper dive into the city's climate can be found in our detailed guide: Bangkok Climate.