May Weather in Phaya Thai, Thailand

Last updated: August 27, 2025

May in Phaya Thai, Thailand brings a mix of intense heat and high humidity, with temperatures soaring to a maximum of 40°C (103°F) and an average of around 30°C (87°F). As the month progresses, humidity levels peak at 80%, creating a feeling of mugginess in the air. This is also the start of the rainy season, as evidenced by the 142 mm (5.6 in) of rainfall spread over 19 days, making it essential for residents and visitors to prepare for both heat and sudden downpours. Whether you're exploring vibrant streets or seeking shelter from a rainstorm, May in Phaya Thai offers a unique experience marked by its dynamic weather.

May Temperature in Phaya Thai

In May, Phaya Thai, Thailand, begins to transition into the sweltering summer months, showcasing an increasing warmth that is characteristic of the season. With nighttime temperatures rising to a minimum of 23°C (74°F) and daytime highs reaching a striking 40°C (103°F), the region experiences one of its hottest months. The average temperature remains consistent at 30°C (87°F), mirroring the mild averages seen since January. As April already hinted at the heat to come, May further solidifies the trend, becoming a harbinger of the intense warmth that defines the upcoming summer. Travelers are advised to stay hydrated and seek shade during the hottest parts of the day, making the most of this vibrant season while enjoying the bustling life of this dynamic city.

May Weather in Phaya Thai: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Phaya Thai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Phaya Thai, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec808285868686858584838280
Data source: Temperature data for Phaya Thai generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Phaya Thai

In May, Phaya Thai experiences a significant uptick in precipitation, with a total of 142 mm (5.6 in), marking it as one of the wettest months of the year. This increase is reflected in the 19 rainy days, suggesting that the region transitions fully into the rainy season. Compared to earlier months like April, which saw 107 mm (4.2 in) over 12 days, May’s combination of a higher rainfall amount and frequency indicates a more sustained period of wet weather. As the monsoon season progresses, this trend continues, leading into even rainier months ahead, such as July and August. Thus, May serves as a pivotal point in Phaya Thai's climatic rhythm, heralding the intense downpours typical of the summer months.

May Precipitation Trends in Phaya Thai

The chart displays monthly precipitation patterns in Phaya Thai, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Phaya Thai, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec2914441071421121591632452506124
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Phaya Thai

As May arrives in Phaya Thai, Thailand, the sweltering heat begins to intertwine with the increasing humidity, which surges to a notable 80%. This marks a significant leap from the 70% recorded in April, heralding the onset of the region's rainy season. The trend is clear: as the year progresses, humidity escalates, peaking in the summer months of July and August, where it reaches a staggering 86% and 88% respectively. May essentially serves as a transitional phase, where the lush green landscapes are nurtured by the boost in moisture, paving the way for the vibrant natural beauty that defines Thailand during its wet season. As temperatures climb, residents and visitors alike should be prepared for the thick, humid air that envelops the city, making hydration and light clothing essential for comfort.

May Average Humidity in Phaya Thai

This chart illustrates the average monthly humidity levels in Phaya Thai, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Phaya Thai is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%58%61%70%80%85%86%88%87%83%78%70%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Phaya Thai

In May, Phaya Thai, Thailand, experiences a UV Index of 14, categorized as extreme, with a burn time of just 10 minutes. This pattern of elevated UV exposure begins as early as February and persists through several months, peaking in March and May at the same index level. Such data highlights a trend of intense sun exposure during the spring to early summer months, making sun safety a crucial consideration for residents and visitors alike. As temperatures rise and outdoor activities increase, it's essential to stay informed about UV levels. For a detailed understanding of UV levels throughout the year, check out the complete guide at Phaya Thai UV Index.

Maximum UV Index Levels in Phaya Thai for May

The chart shows the monthly maximum UV Index (UVI) for Phaya Thai in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Phaya Thai typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1012141314131414131298
Data source: Phaya Thai May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Phaya Thai

In Phaya Thai, Thailand, May brings a delightful continuation of abundant sunshine, contributing 321 hours of bright daylight. This month follows a trend of increasing sunshine, peaking in March with 336 hours before slightly tapering off in April and May. While May's numbers remain strong, they reflect a gradual shift as the rainy season approaches, evidenced by the subsequent drop to 302 hours in June. Overall, the sun-soaked conditions of May create a vibrant atmosphere, encouraging outdoor activities and exploration, while hinting at the seasonal transitions ahead. With longer daylight hours during the earlier months, May serves as a beautiful bridge into the lush, green landscape that the rains will soon nourish.

Monthly Sunshine Duration in Phaya Thai: May Highlighted

The May sunshine duration represents the total number of hours Phaya Thai experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec251h299h336h322h321h302h290h280h268h287h294h316h
Data source: Phaya Thai May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Phaya Thai During May

In Phaya Thai, Thailand, May presents a notable downturn in sunny weather, with a 33% chance of clear skies, starkly contrasting the preceding months. After enjoying a relatively bright February at 76%, the chances of sunshine plummet as April fades, revealing an 18% likelihood, just before the rainy season takes hold. Following May, the prospects diminish even further, with June and July seeing a mere 17% and 11% chance of sun, respectively. This trend highlights May as a transitional month, where the vibrant sunshine of earlier in the year gives way to the impending monsoon, making it a time where the sun's rays become a rare delight.

Percentage of Sunny Days in May in Phaya Thai

The chart illustrates the percentage of sunny days in Phaya Thai throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Phaya Thai experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec58%76%57%18%33%17%11%9%10%14%29%63%
Data source: Phaya Thai May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Phaya Thai in May

In Phaya Thai, Thailand, May marks the continuation of a delightful trend in daylight duration. With 12 hours of daylight, May aligns with the months that precede it, establishing a consistent pattern that begins in March and lasts through August. The transition from the earlier months of the year showcases a gradual increase in daylight, reaching peak brightness during the mid-year months before tapering off again in October. This rhythmic cycle not only enhances the natural beauty of the region but also influences the lifestyle and activities of its residents. As the days grow longer, there's a palpable sense of vibrancy and energy in the air, inviting both locals and visitors to embrace the charm of outdoor experiences.

Average Daylight Hours in Phaya Thai for May

The chart illustrates the variation in daylight duration in Phaya Thai throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 24m11h 40m12h 2m12h 25m12h 45m12h 54m12h 49m12h 33m12h 11m11h 48m11h 28m11h 19m
Data source: Phaya Thai daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Phaya Thai

In May, the winds in Phaya Thai, Thailand maintain a gentle rhythm, with an average speed of 2.4 m/s (5 mph). This slight uptick from the calmer winds of April reflects a common trend as the region transitions into the wetter months. Notably, March and June stand out with higher wind speeds of 3.0 m/s (7 mph), suggesting that the brief reprieve from the wind in the hotter season is followed by a return to breezier days. The overall pattern shows a delightful oscillation between tranquil and brisk conditions throughout the year, with May fitting snugly into this moderate spectrum, inviting residents and visitors alike to enjoy the serene air as summer approaches.

Average May Wind Speed in Phaya Thai

The chart displays monthly wind speed patterns in Phaya Thai, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.43.01.92.4 m/s3.02.72.62.02.02.22.6
Data source: Phaya Thai May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Phaya Thai Compares to Other Months

Weather in Phaya Thai varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Phaya Thai, focusing on differences in temperature, rainfall, humidity, and UV levels.

May and January present stark contrasts in weather. In May, temperatures soar with a minimum of 23°C (74°F) and an average high of 30°C (87°F), occasionally reaching a scorching 40°C (103°F). The month is also marked by high humidity at 80% and significant rainfall, averaging 142 mm (5.6 in) over 19 days. In contrast, January boasts cooler temperatures, with a minimum of 16°C (61°F) and an average high of 27°C (81°F), peaking at 35°C (94°F). This month experiences substantially less rainfall, averaging only 29 mm (1.1 in) over just 3 days, and a lower humidity level of 59%. For more detailed insights into January weather, visit Phaya Thai weather in January.

When comparing May and February weather, May tends to be significantly warmer and more humid. The minimum temperature in May is 23°C (74°F), with an average of 30°C (87°F) and a maximum hitting 40°C (103°F). In contrast, February experiences milder temperatures, with a minimum of 19°C (66°F), an average of 28°C (82°F), and a maximum of 35°C (96°F). Additionally, May is much wetter, receiving 142 mm (5.6 in) of precipitation over 19 days, while February sees only 14 mm (0.5 in) over just 3 days. This leads to a significant difference in humidity levels as well, with May at 80% compared to February's 58%. For more details, you can check Phaya Thai weather in February.

In comparing the weather between May and March, we can see notable differences. May boasts higher maximum temperatures, reaching up to 40°C (103°F), while March's peak tops off at 37°C (99°F). Both months share a similar average temperature of approximately 30°C (86°F), but May experiences significantly more precipitation, with 142 mm (5.6 in) over 19 rainy days compared to March's moderate 44 mm (1.7 in) spread over just 5 days. Additionally, humidity levels are higher in May at 80%, contrasting with March's 61%. For more insights, check out Phaya Thai weather in March.

In comparing the weather between April and May, both months experience warm average temperatures of around 30°C (87°F). However, May tends to be hotter, with maximum temperatures reaching up to 40°C (103°F), compared to April's peak of 38°C (100°F). Additionally, May is significantly wetter, recording 142 mm (5.6 in) of precipitation over 19 days, while April sees less rain, with 107 mm (4.2 in) over 12 days. Humidity levels also rise in May to 80%, compared to 70% in April, resulting in a more humid atmosphere. For more detailed insights, you can check Phaya Thai weather in April.

In May, temperatures typically 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). This month experiences significant rainfall, with 142 mm (5.6 in) of precipitation over 19 days and humidity levels around 80%. In contrast, June sees slightly warmer nights with a minimum temperature of 25°C (78°F) and a lower maximum of 37°C (99°F), while the average remains steady at 30°C (86°F). Rainfall in June is less intense, totaling 112 mm (4.4 in) over 22 days, and humidity increases to about 85%. For more detailed information about June weather, you can check Phaya Thai weather in June.

In comparing the weather between May and July, we see a slight increase in minimum temperatures, with July's lows at 25°C (78°F) compared to May's 23°C (74°F). The average temperature in May is marginally higher at 30°C (87°F) versus July’s 29°C (85°F), while July experiences slightly cooler maximum temperatures, peaking at 37°C (99°F) compared to May’s 40°C (103°F). Both months are characterized by considerable rainfall, with May receiving 142 mm (5.6 in) over 19 days and July seeing increased precipitation of 159 mm (6.2 in) over 26 days. The humidity rises from 80% in May to 86% in July, contributing to a more oppressive atmosphere as summer progresses. For more specific details on weather patterns in the region, you can check Phaya Thai weather in July.

In comparing May and August weather, May experiences slightly higher average temperatures, with a range between 23°C (74°F) and 40°C (103°F), while August sees a minimum of 25°C (77°F) and a maximum of 37°C (99°F). Precipitation is also a factor, with May receiving 142 mm (5.6 in) over 19 days, compared to August's 163 mm (6.4 in) spread over 23 days. Furthermore, humidity levels peak in August at 88%, slightly higher than May’s 80%. This combination of warmer temperatures and increased humidity makes August feel more oppressive. For more details on August weather conditions in this area, you can visit Phaya Thai weather in August.

In comparing the weather in May and September, May experiences a slightly warmer climate, with average temperatures reaching 30°C (87°F) and maximums peaking at 40°C (103°F). However, it also sees considerable precipitation, with about 142 mm (5.6 in) falling over 19 days and a humidity level of 80%. In contrast, September is typically cooler, with average temperatures around 29°C (84°F) and maximums of 36°C (97°F). This month also has more rainfall, accumulating 245 mm (9.6 in) over 24 days and a higher humidity level of 87%. If you want to learn more about specific weather conditions in September, check out Phaya Thai weather in September.

In May, the weather tends to be hotter and more humid, with average temperatures reaching up to 30°C (87°F) and maximums soaring to 40°C (103°F). The month experiences significant rainfall, with a total precipitation of 142 mm (5.6 in) over approximately 19 days, contributing to the high humidity level of 80%. In contrast, October sees a slight drop in temperature, with averages around 29°C (84°F) and maximums of up to 35°C (96°F). However, it also has a higher total precipitation of 250 mm (9.9 in) spread over about 21 days, leading to a humidity level of 83%. For more detailed weather information, you can check Phaya Thai weather in October.

In May, the weather tends to be significantly warmer, with average temperatures reaching up to 30°C (87°F) and maximums peaking at 40°C (103°F). This month also experiences high humidity levels at 80% and considerable rainfall of 142 mm (5.6 in) over 19 days. In contrast, November offers a more moderate climate, with average temperatures around 28°C (83°F) and maximums of 35°C (95°F). The precipitation drops to 61 mm (2.4 in) spread over just 9 days, accompanied by slightly lower humidity at 78%. For a detailed look at November's weather, visit Phaya Thai weather in November.

May and December present contrasting weather patterns. In May, temperatures range from a minimum of 23°C (74°F) to a scorching maximum of 40°C (103°F), with an average temperature of 30°C (87°F). The month is characterized by high humidity levels at 80% and significant rainfall, totaling 142 mm (5.6 in) over 19 days. In stark contrast, December enjoys milder temperatures, with a minimum of 15°C (59°F), an average of 27°C (80°F), and a maximum of 35°C (95°F). Rainfall is minimal, with only 24 mm (0.9 in) occurring over just 2 days, accompanied by lower humidity at 70%. For more details, check out Phaya Thai weather in December.

Compare Phaya Thai's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Phaya Thai

May in Phaya Thai brings a noticeable shift in weather, characterized by higher temperatures and increased humidity compared to the preceding months. With average highs reaching a sweltering 30°C (87°F), the sweltering heat can be quite intense, especially as the city experiences frequent rainfall, totaling around 142 mm over 19 days. This combination of warmth and moisture contributes to a tropical atmosphere, setting the stage for the lush greenery that follows as the rainy season approaches. For more insights into what to expect throughout the year, check out Phaya Thai Climate.