Last updated: August 27, 2025
Experience the weather of That Phanom, Thailand in May, where temperatures can soar to a maximum of 39°C (103°F), creating a warm and inviting atmosphere. The average temperature hovers around a comfortable 29°C (84°F), while refreshing lows can dip to 17°C (62°F), offering a pleasant reprieve during the evenings. May is characterized by significant precipitation, with 168 mm (6.6 in) of rainfall over approximately 20 days, contributing to the region's lush greenery. With humidity levels at 65%, the air carries a tropical essence, enhancing the vibrant spirit of this enchanting destination.
In May, That Phanom, Thailand experiences a gentle transition towards the warmest months of the year. With minimum temperatures rising to 17°C (62°F) and reaching a peak of 39°C (103°F), the climate remains quite warm and inviting. The average temperature hovers around 29°C (84°F), which is consistent with the rising heat that begins in April. The trend towards warmer evenings becomes noticeable, as the previous months give way to the sultry summer days ahead. As the weather warms, May offers a perfect opportunity to enjoy the vibrant outdoor culture of Thailand, making it a great time for both locals and travelers alike.
May marks a significant turning point in That Phanom, Thailand, with precipitation soaring to 168 mm (6.6 in) over approximately 20 days. This sharp increase in rainfall compared to previous months signals the arrival of the wet season, where the skies open up just in time for the lush greenery to flourish. Following a gradual ascent from 4 mm (0.1 in) in January to 67 mm (2.6 in) in April, May's deluge is akin to a natural awakening, fueling the landscape's growth and vibrancy. As the monsoon season progresses into June — which further adds to the rainfall totals at 191 mm (7.5 in) — the month of May beautifully bridges the transition, promising a rich tapestry of life as it sets the stage for even wetter days ahead.
As the warm winds of May sweep into That Phanom, Thailand, humidity begins to climb significantly, reaching 65%—a notable increase from the drier months preceding it. This spike marks a transition into the wetter season, as the days grow hotter and the air thickens with moisture. Following May, humidity continues its upward trajectory, peaking in the summer months of August and July at a staggering 92% and 90%, respectively. The increasing trend from May onward signifies the onset of the monsoon, where humidity remains high into the fall. Observing this shift not only highlights the changing climate but also prepares visitors for the lush landscapes that flourish under these conditions.
May in That Phanom, Thailand, continues the trend of extreme UV exposure, boasting a UV Index of 14. While the intensity remains high, it's slightly lower than April's peak of 15, yet still demands caution, with a burn time of just 10 minutes. This month, along with nearby June and July, exemplifies the relentless sunshine typical of the region as temperatures rise. As you bask in the beauty of That Phanom, ensure you take adequate precautions against the sun’s rays and stay informed by checking the That Phanom UV Index for daily updates.
UV Risk Categories
May in That Phanom, Thailand, enjoys a delightful 305 hours of sunshine, seamlessly continuing the sunny trend established in the preceding months. Following the peak of 322 hours in March, the sunshine hours gradually transitioned through April, contributing to a warm ambiance that invites outdoor exploration. Although June sees a slight dip to 280 hours, the overall pattern highlights May as a vibrant month where the skies are often clear, making it perfect for enjoying the lush landscapes and local culture. This consistent availability of sunshine reinforces That Phanom’s reputation as a charming destination, celebrating the warmth of the Thai sun throughout the spring.
As May approaches in That Phanom, Thailand, the likelihood of sunny weather dips significantly, with only a 41% chance of sunshine compared to the preceding months. This decline follows a trend observed from the peak of 84% in February to the much lower 38% in April, indicating a shift towards the rainy season. The onset of June brings an even steeper drop to just 17%, highlighting May as a transitional month where occasional bursts of sun might emerge amidst increasing cloud cover and humidity. Travelers should prepare for unpredictability, as the joy of sunny rays becomes less certain in this time of year.
In That Phanom, Thailand, the progression of daylight throughout the year reveals an intriguing pattern. Starting in January and February, residents enjoy a consistent 11 hours of daylight, providing a gentle introduction to the year's light cycle. As March arrives, daylight extends to 12 hours, continuing into April and May, creating a vibrant atmosphere as the region transitions into spring. Moving into the summer months of June and July, daylight peaks at 13 hours, offering long, sun-soaked days ideal for outdoor activities. However, as August and September arrive, daylight decreases back to 12 hours, heralding the onset of the autumn season. By October, the sun begins to set earlier, leading to a return to 11 hours of daylight that persists through November and December. This rhythmic ebb and flow of daylight not only enriches the local environment but also shapes the cultural and daily activities of the community.
In That Phanom, Thailand, the month of May marks a relative lull in wind activity, with an average wind speed dropping to 1.7 m/s (4 mph). This trend is consistent with the gradual decrease observed from April's 2.0 m/s to May, highlighting the calming effects of the approaching rainy season. As spring transitions into summer, the wind speeds then pick up slightly in June to 2.6 m/s, suggesting a shift in atmospheric conditions. Notably, the annual pattern showcases a peak in wind speeds during the later months, with January and December featuring the strongest gusts at 3.4 m/s and 3.5 m/s, respectively. Thus, while May offers a quieter breeze, it sets the stage for the fluctuations that characterize the Thai climate throughout the year.
Weather in That Phanom varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in That Phanom, focusing on differences in temperature, rainfall, humidity, and UV levels.
In May, temperatures soar with a minimum of 17°C (62°F), averaging 29°C (84°F), and peaking at a scorching 39°C (103°F). This month also brings considerable rainfall, with around 168 mm (6.6 in) of precipitation spread over 20 days, contributing to a humidity level of 65%. In stark contrast, January features much milder conditions, with temperatures ranging from a minimum of 9°C (48°F) to an average of 23°C (74°F) and a maximum of 35°C (95°F). The rainfall is minimal in January, with only 4 mm (0.1 in) over a single day and a lower humidity of 59%. For a detailed look at the weather in January, visit That Phanom weather in January.
May and February offer quite distinct weather experiences. May welcomes warmer temperatures, ranging from a minimum of 17°C (62°F) to a scorching maximum of 39°C (103°F) and an average of 29°C (84°F). The month also sees significant rainfall, with 168 mm (6.6 in) over 20 days, contributing to higher humidity levels at 65%. In contrast, February features milder temperatures, with a minimum of 12°C (53°F) and a maximum of 37°C (99°F), along with a comfortable average of 24°C (75°F). Notably, February experiences minimal precipitation, totaling just 10 mm (0.4 in) over only 1 day, resulting in lower humidity at 54%. For further details on February weather, you can check That Phanom weather in February.
In comparing the weather between May and March, May presents notably warmer temperatures, with an average of 29°C (84°F) compared to March's 27°C (81°F). The maximum temperatures in May can reach up to 39°C (103°F), slightly higher than March's peak of 38°C (101°F). However, May is also significantly wetter, experiencing 168 mm (6.6 in) of precipitation over 20 days, while March sees only 36 mm (1.4 in) of rain over just 6 days. Additionally, humidity levels increase in May to 65%, compared to the lower 45% in March, giving May a distinctly more muggy feel. For more detailed information about March weather, you can refer to That Phanom weather in March.
In comparing the weather between April and May, both months exhibit warm temperatures, but May tends to be slightly more humid and wetter. April features minimum temperatures around 16°C (61°F) and averages 28°C (84°F), with a maximum of 40°C (104°F). In contrast, May's temperatures range from a minimum of 17°C (62°F) to a maximum of 39°C (103°F), with an average of 29°C (84°F). Precipitation also differs significantly; April receives only 67 mm (2.6 inches) across 10 days, while May experiences a much heavier rainfall of 168 mm (6.6 inches) over 20 days. Additionally, the humidity in April is notably lower at 40%, compared to 65% in May. For further insights on April weather, check out That Phanom weather in April.
May and June weather exhibit some notable differences. In May, temperatures range from a minimum of 17°C (62°F) to a maximum of 39°C (103°F), with an average of 29°C (84°F). The month sees a significant amount of rainfall, totaling 168 mm (6.6 in) over 20 days, combined with a humidity level of 65%. In contrast, June starts off warmer with a minimum temperature of 24°C (75°F) and a slightly lower maximum of 37°C (98°F), maintaining the same average of 29°C (84°F). Rainfall increases in June to 191 mm (7.5 in) across 23 days, and humidity rises to 82%, making it feel more tropical. For a detailed look at June weather, check out That Phanom weather in June.
In May, temperatures begin to rise with a minimum of 17°C (62°F) and averaging around 29°C (84°F), peaking at 39°C (103°F). However, the month sees considerable rainfall, totaling 168 mm (6.6 in) over 20 days and experiencing 65% humidity. By July, the weather shifts significantly: the minimum temperature rises to 24°C (75°F), with an average of 28°C (83°F) and a maximum of 36°C (97°F). Rainfall increases dramatically to 394 mm (15.5 in) spread over 26 days, accompanied by higher humidity levels at 90%. This shift indicates not only warmer nights but also a wetter mid-year compared to May. For a detailed overview, check out That Phanom weather in July.
May and August both present warm temperatures, but with notable differences in weather patterns. In May, temperatures range from a minimum of 17°C (62°F) to a maximum of 39°C (103°F), with an average of 29°C (84°F). The humidity level is moderate at 65%, and rainfall amounts to 168 mm over 20 days. In contrast, August sees higher minimum temperatures at 22°C (72°F) and a more comfortable average of 28°C (82°F), combined with a maximum of 35°C (95°F). However, August is significantly wetter, boasting 351 mm of precipitation over 28 days and a higher humidity level of 92%. For a detailed look at the weather in August, you can visit That Phanom weather in August.
May and September present distinct weather profiles, showcasing the transition from late spring to early autumn. In May, temperatures range from a minimum of 17°C (62°F) to a blistering maximum of 39°C (103°F), with an average temperature of 29°C (84°F). This month experiences 168 mm (6.6 in) of precipitation over 20 days, accompanied by a humidity level of 65%. In contrast, September sees slightly milder temperatures, with a minimum of 22°C (72°F) and a maximum of 35°C (95°F), averaging around 28°C (82°F). However, it also brings increased rainfall, totaling 259 mm (10.2 in) over 24 days, and a higher humidity level of 86%. As such, while May is characterized by hotter days, September's weather is marked by more consistent rainfall and higher humidity. For more details, check out That Phanom weather in September.
In May, temperatures soar, with averages reaching up to 29°C (84°F) and maximums peaking at 39°C (103°F), creating a hot and somewhat humid environment, with 65% humidity. This month also experiences considerable rainfall, totaling 168 mm (6.6 inches) over 20 days. In contrast, October brings slightly milder conditions, with average temperatures around 27°C (80°F) and maximums at 35°C (96°F). Although October has a similar amount of precipitation at 156 mm (6.1 inches), it spans just 13 days, and humidity rises to 80%. For more details on October weather, you can check out That Phanom weather in October.
In May, the weather is significantly warmer, with temperatures ranging from a minimum of 17°C (62°F) to a scorching maximum of 39°C (103°F), and an average of 29°C (84°F). This month also sees considerable rainfall, with 168 mm (6.6 in) of precipitation over 20 days, contributing to a humidity level of 65%. In contrast, November experiences milder temperatures, with a minimum of 16°C (61°F) and a maximum of 36°C (97°F), averaging around 25°C (78°F). Rainfall is much lighter in November, totaling just 22 mm (0.9 in) over three days, accompanied by a higher humidity of 72%. For more details on November weather conditions, you can check That Phanom weather in November.
In comparing the weather between May and December, it is evident that May is a much hotter and wetter month. The average temperature in May reaches a peak of 29°C (84°F), with maximums soaring up to 39°C (103°F). In contrast, December offers a more moderate climate, with an average temperature of 23°C (73°F) and max temperatures around 35°C (95°F). Additionally, May sees considerable precipitation, with 168 mm (6.6 inches) of rainfall over approximately 20 days, while December is notably dry with only 6 mm (0.2 inches) of rain occurring just once throughout the month. Humidity levels are quite similar, hovering around 65% in May and 66% in December. For more detailed information about December weather, you can visit That Phanom weather in December.
As May graces That Phanom, it ushers in a transition marked by soaring temperatures and increased humidity, setting it apart from the milder months. With maximum temperatures occasionally reaching a blistering 39°C (103°F) and an average of 29°C (84°F), the heat is palpable. Unlike the drier months, May also sees increased precipitation, evidenced by the 20 rainy days that contribute to the total of 168 mm (6.6 in) of rainfall. This blend of warmth and moisture creates a unique, tropical atmosphere, making May a distinct time in That Phanom's climate landscape. For more detailed insights, check out That Phanom Climate.