Last updated: August 27, 2025
In May, Phra Nakhon Si Ayutthaya, Thailand experiences a warm climate characterized by a maximum temperature reaching 40°C (104°F) and an average of 30°C (87°F). Nights bring a mild minimum of 23°C (74°F), providing some relief from the daytime heat. This month is also marked by significant rainfall, totaling 166 mm (6.5 inches) spread across approximately 21 days, creating a humid environment with an average humidity level of 76%. Visitors should brace for both heat and moisture, making it essential to stay hydrated and plan activities accordingly.
In May, Phra Nakhon Si Ayutthaya experiences a blend of warmth and humidity, as temperatures linger between a minimum of 23°C (74°F) and a maximum of 40°C (104°F). The average temperature remains steady at 30°C (87°F), mirroring the preceding months of April and March, which also showcase a trend of rising warmth. As the region transitions further into the hot season, the escalating heat reaches its peak, signaling the onset of the true Thai summer, where outdoor activities may be best enjoyed during the cooler parts of the day. This pattern sets the stage for the sweltering months ahead, making May a pivotal point in the annual temperature cycle of this historic city.
May marks a significant turning point in the rainfall patterns of Phra Nakhon Si Ayutthaya, Thailand, as it experiences a dramatic increase in precipitation. With an impressive 166 mm (6.5 in) of rain falling over 21 days, May sets the stage for the forthcoming monsoon season. This month sees a substantial jump from April's already robust 100 mm (4.0 in), signaling a shift toward wetter weather. Following the trend of increasing rainfall, May is a precursor to the even heavier rains that arrive in June and July, highlighting a pattern where the region becomes increasingly drenched as summer progresses. The frequency of rainy days ramps up notably, preparing the landscape for the lush greenery that accompanies the peak rainy months ahead.
As May arrives in Phra Nakhon Si Ayutthaya, the humidity levels soar to 76%, marking a significant rise from the drier months of the year. Following a relatively comfortable April at 51%, the shift to May heralds the onset of the wet season, which kicks off a trend of escalating humidity that peaks in the subsequent months. June sees humidity reaching 83%, and by August, it escalates to a steamy 85%. This dramatic leap not only sets the stage for the sweltering summer but also highlights the region's tropical climate, where lush greenery thrives amidst high moisture levels. The humid conditions of May not only signal the approach of the rainy season but also invite locals and visitors alike to embrace the vibrant natural beauty that flourishes under such humidity.
In May, Phra Nakhon Si Ayutthaya continues to experience an extreme UV Index of 13, maintaining the high levels established in the months prior. With a critical burn time of just 10 minutes, this month emphasizes the need for sun protection, as the sun’s rays remain intensely harmful. Following a trend from January through April, where UV levels peaked at 14, the slight dip to 13 in May does not lessen the urgency to safeguard your skin. Notably, as temperatures rise into the summer months, maintaining awareness of UV exposure becomes essential. For more insights and updates on UV conditions, visit Phra Nakhon Si Ayutthaya UV Index.
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May in Phra Nakhon Si Ayutthaya, Thailand, shines with 320 hours of sunshine, making it a beautiful bridge between the radiant days of April and the slower pace of June. This month sees a slight dip from the vibrant peak of March, which boasted an impressive 333 hours, yet it remains a highlight in the early summer months. As the warm season progresses, May offers a balance of sunlight that invites locals and visitors alike to explore the rich history and culture of this UNESCO World Heritage site. With pleasant weather and ample daylight, it's an ideal time to experience the stunning ruins and lush landscapes that define Ayutthaya.
In Phra Nakhon Si Ayutthaya, Thailand, the likelihood of enjoying sunny weather in May is relatively low, with only a 34% chance of sunshine. This decline follows a trend seen from the previous months, where February boasts an impressive 79% chance, ushering in sunnier days as the year begins. However, as temperatures rise towards the peak of summer, such as in April with its drastic drop to 18%, the outlook for clear skies continues to diminish through June and July, where chances fall to 16% and 10%, respectively. This suggests that while May may see some sun, it is typically overshadowed by an increasing likelihood of rain, marking a shift toward the wetter season.
In Phra Nakhon Si Ayutthaya, Thailand, the daylight duration experiences a captivating pattern throughout the year. Starting at 11 hours in January and February, daylight begins to increase as spring approaches, reaching 12 hours in March. This extended daylight continues through April, May, and into the summer months, remaining consistent at 12 hours until September. As the season transitions to autumn, daylight once again reduces, tapering off to 11 hours from October through December. This rhythm of longer days during the warmer months and shorter days in the cooler seasons highlights the region's unique climate and seasonal shifts.
In Phra Nakhon Si Ayutthaya, May brings a mild average wind speed of 2.2 m/s (5 mph), mirroring January’s gentle breezes. This month stands out as a transition point, with a notable increase in wind intensity as the year progresses into the hotter months. While the winds begin to pick up slightly from April's low of 1.8 m/s (4 mph), they remain relatively tranquil, setting the stage for June's more dynamic wind patterns at 3.0 m/s (7 mph). With consistent breezes throughout the month, May offers a comfortable experience for those exploring Ayutthaya’s rich cultural heritage, allowing visitors to enjoy both the historical sights and the soothing winds that gracefully dance through the ancient ruins.
Weather in Phra Nakhon Si Ayutthaya varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Phra Nakhon Si Ayutthaya, focusing on differences in temperature, rainfall, humidity, and UV levels.
In May, the weather becomes significantly warmer and more humid compared to January. With average temperatures ranging from a minimum of 23°C (74°F) to a maximum of 40°C (104°F), May experiences a peak heat index along with high humidity levels at 76%. Additionally, it sees more precipitation, averaging 166 mm (6.5 in) over 21 days, making it one of the wetter months of the year. In stark contrast, January enjoys milder temperatures, with averages ranging from a minimum of 16°C (61°F) to a maximum of 36°C (96°F) and much lower humidity at 50%. It also sees significantly less rain, with only 17 mm (0.7 in) of precipitation over just 3 days. For a detailed comparison, you can check Phra Nakhon Si Ayutthaya weather in January.
When comparing the weather in May and February, May tends to be significantly warmer and more humid. In May, the minimum temperature is 23°C (74°F), with an average high reaching 40°C (104°F), whereas February enjoys milder temperatures, ranging from a minimum of 18°C (65°F) to a maximum of 37°C (98°F). Additionally, May experiences much higher precipitation, totaling 166 mm (6.5 in) over 21 days, contrasted with February's minimal rainfall of just 12 mm (0.5 in) over only 3 days. The humidity in May is notably higher at 76%, compared to February's 47%. For more detailed weather patterns, you can check Phra Nakhon Si Ayutthaya weather in February.
In comparing the weather conditions of May and March, both months experience similar average temperatures, with May slightly warmer, peaking at 40°C (104°F) compared to March's maximum of 39°C (102°F). However, May is characterized by significantly higher precipitation, recording 166 mm (6.5 in) over 21 days, while March sees only 47 mm (1.8 in) over just 5 days, resulting in much drier conditions. Additionally, humidity levels in May are notably higher at 76%, compared to 41% in March. For a detailed look at the weather in March, you can visit Phra Nakhon Si Ayutthaya weather in March.
In comparing the weather of April and May, both months experience high temperatures, with averages around 31°C (87°F) in April and 30°C (87°F) in May. However, May is characterized by a slightly higher minimum temperature of 23°C (74°F) compared to April's 20°C (68°F). Notably, May sees significantly more rainfall, accumulating 166 mm (6.5 in) over 21 days, while April has only 100 mm (4.0 in) over 15 days. Additionally, humidity levels soar in May at 76%, contrasting with April's more comfortable 51%. For a detailed look at April's weather patterns, check out Phra Nakhon Si Ayutthaya weather in April.
May and June showcase a gradual transition in weather patterns. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 40°C (104°F), with an average around 30°C (87°F). This month experiences a significant amount of precipitation, totaling 166 mm (6.5 in) over 21 days, alongside a humidity level of 76%.
In contrast, June sees slightly warmer minimum temperatures at 25°C (77°F) and a maximum of 39°C (102°F), while the average remains stable at 30°C (86°F). The rainfall decreases to 135 mm (5.3 in), occurring over 22 days, with humidity levels rising to 83%. This combination makes June a bit more humid, albeit with slightly less precipitation than May. For a detailed look at June's conditions, check Phra Nakhon Si Ayutthaya weather in June.
In comparison, the weather in May tends to be warmer than in July, with average temperatures reaching 30°C (87°F) and a maximum of 40°C (104°F). July, on the other hand, has a slightly lower average temperature of 29°C (85°F) and a maximum of 38°C (101°F). Both months experience significant rainfall, with May receiving 166 mm (6.5 in) over 21 days, compared to July's 179 mm (7.1 in) over 26 days. Additionally, July has a higher humidity level of 80%, compared to May's 76%. For more detailed weather information, you can visit Phra Nakhon Si Ayutthaya weather in July.
May and August exhibit notable differences in weather patterns. In May, the temperatures generally range from a minimum of 23°C (74°F) to a maximum of 40°C (104°F), with an average temperature of 30°C (87°F). Precipitation in May totals 166 mm (6.5 in) over 21 days, paired with a humidity level of 76%. In contrast, August sees slightly higher minimum temperatures at 24°C (76°F) and a lower average of 29°C (85°F), peaking at 38°C (101°F). This month experiences greater rainfall, totaling 194 mm (7.6 in) across 25 days, with humidity levels rising to 85%. For a more detailed view on precipitation and temperature specifics, check out Phra Nakhon Si Ayutthaya weather in August.
May and September present distinct weather patterns. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 40°C (104°F), with an average of 30°C (87°F). The month experiences significant rainfall totaling 166 mm (6.5 in) over 21 days, accompanied by a humidity level of 76%. In contrast, September sees slightly higher minimum temperatures at 24°C (76°F) and a lower maximum of 37°C (98°F), with an average temperature of 29°C (84°F). However, it experiences much heavier rainfall, with 279 mm (11.0 in) occurring across 25 days and an increase in humidity to 88%. For a closer look at what to expect, check out Phra Nakhon Si Ayutthaya weather in September.
May and October showcase distinct yet somewhat similar weather patterns. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 40°C (104°F), with an average temperature of 30°C (87°F). This month experiences significant rainfall, averaging 166 mm (6.5 in) over 21 days, coupled with high humidity at 76%. In contrast, October presents a slightly cooler climate, with temperatures ranging from 22°C (71°F) to 37°C (99°F) and an average of 29°C (84°F). It also receives more rainfall, with 212 mm (8.4 in) distributed over 19 days, accompanied by a slightly higher humidity level of 79%. For more detailed insights, you can check Phra Nakhon Si Ayutthaya weather in October.
May and November in Phra Nakhon Si Ayutthaya showcase distinct weather patterns. In May, temperatures range from a minimum of 23°C (74°F) to a maximum of 40°C (104°F), with an average of 30°C (87°F). The month is characterized by high humidity at 76% and substantial precipitation of 166 mm (6.5 in) over 21 days. In contrast, November sees slightly cooler temperatures, with a minimum of 21°C (70°F) and a maximum of 36°C (97°F), averaging around 28°C (83°F). The humidity decreases to 68%, and rainfall is significantly lower at 50 mm (2.0 in) over just 8 days. For more details on November weather, you can check this link: Phra Nakhon Si Ayutthaya weather in November.
May and December present contrasting weather conditions. In May, temperatures soar, with a minimum of 23°C (74°F) and averages reaching as high as 30°C (87°F), peaking at 40°C (104°F). The month is also characterized by significant rainfall, accumulating 166 mm (6.5 in) over 21 days, coupled with high humidity levels of 76%. In contrast, December offers a more temperate climate, with minimum temperatures of 15°C (60°F) and an average of 27°C (81°F), peaking at 36°C (97°F). Precipitation is minimal in December, totaling just 18 mm (0.7 in) over 3 days, and humidity drops to a comfortable 59%. For more details, you can check Phra Nakhon Si Ayutthaya weather in December.
As May rolls in, Phra Nakhon Si Ayutthaya experiences a significant shift in weather patterns compared to previous months. The rising temperatures often peak at a scorching 40°C (104°F), creating a steamy atmosphere that's accompanied by high humidity levels around 76%. This month also marks one of the wetter periods of the year, with 21 days of rainfall contributing to a total precipitation of 166 mm (6.5 in). Visitors should be prepared for the heat and moisture as they explore the historical treasures of this UNESCO World Heritage site. To learn more about the unique climatic conditions of this region, check out Phra Nakhon Si Ayutthaya Climate.