Last updated: January 18, 2025
Bangkok, Thailand, experiences a tropical savanna climate classified under the Köppen-Geiger system as Aw, characterized by distinct wet and dry seasons. Temperatures in the city reveal a wide spectrum, with a minimum of 14°C (57°F) recorded in December and soaring to a maximum of 40°C (105°F) in May. The average temperature comfortably rests at 29°C (84°F), underscoring the city's warm, humid conditions throughout the year. This climate profile significantly influences the lifestyle and activities of Bangkok's residents as well as its vibrant ecosystem.
Bangkok's temperature patterns exhibit a clear seasonal progression, marked by a gradual warming from the cooler months of December and January, when temperatures range from a minimum of 14°C (57°F) to a maximum of 35°C (95°F). As February approaches, the temperatures begin to rise, culminating in the peak heat of April and May, where maximums can reach 40°C (105°F). The consistent averages of around 30°C (86°F) during these months reflect the intense warmth characteristic of the pre-monsoon season. Following this heat, June introduces a slight cooling trend with average temperatures stabilizing around 30°C (86°F) but accompanied by increased humidity and rainfall, signaling the onset of the monsoon season. By October, temperatures begin to taper off, returning to the more moderate averages of late fall, ultimately leading back to the cooler months where temperatures can dip to their yearly low of 14°C (57°F) in December. Overall, Bangkok experiences distinct seasonal fluctuations, with sweltering heat dominating the mid-year months and cooler, more pleasant conditions emerging as the year comes to a close.
Precipitation in Bangkok follows a defined seasonal pattern, with the year beginning relatively dry. January and February are the driest months, receiving only 29 mm (1.1 in) and 15 mm (0.6 in) of rain, respectively, typically over just a few days. However, as March approaches, rainfall begins to increase significantly, culminating in the onset of the rainy season, which officially starts in April. During the transition months of April and May, precipitation escalates dramatically, with April recording 110 mm (4.3 in) and May 147 mm (5.8 in). This increase is indicative of the city’s shift from the dry season to a more humid climate, as the average number of rainy days rises to 19 in May.
As the monsoon period progresses, June through September sees the highest rainfall totals, peaking in September with 251 mm (9.9 in) spread over approximately 24 days. This torrential rain is characteristic of the southwest monsoon, bringing frequent and intense downpours. October also experiences substantial precipitation at 245 mm (9.6 in). Following this wet phase, a notable decrease in rainfall occurs by November and December, with only 59 mm (2.3 in) and 24 mm (0.9 in), respectively. This seasonal shift, thus, reveals Bangkok's tropical climate, highlighting a sharp contrast between the prolonged wet season and relatively dry cooler months.
Bangkok enjoys a vibrant sunshine profile that reveals distinct seasonal trends throughout the year. Starting from January, the year begins with 251 hours of sunshine, which gradually increases to 298 hours in February. As March approaches, the city experiences a significant leap to 335 hours of sunlight, marking it as the peak month for sunshine. This trend continues through April and May, where sunshine hours hold steady at 321 hours, highlighting the dry and sunny pre-monsoon period that encourages outdoor activities and tourism.
However, as the city transitions into the rainy season, sunshine hours begin to gradually decline from June onward, registering 301 hours in June and dropping to 288 hours in July. The decrease continues through August and September, reaching a low of 267 hours in September, coinciding with the peak of monsoon rains. Interestingly, October sees a slight rebound with 286 hours of sunshine, indicating a gradual drying out of conditions. The year wraps up with a resurgence in sunshine, as November and December report 295 hours and 316 hours, respectively, signaling a return to clearer skies and cooler temperatures. This cyclical pattern provides insight into how Bangkok's tropical climate influences both sunshine availability and overall weather conditions throughout the year.
Bangkok experiences notably high UV Index levels throughout the year, reflecting its tropical climate and proximity to the equator. January begins the year with a UV Index of 10, classified as very high, indicating a burn time of just 15 minutes for unprotected skin. As the months progress, February sees a jump to a UV Index of 12, categorizing it as extreme and further decreasing the safe exposure time to 10 minutes. From March to May, the UV Index remains at its peak, consistently reaching 14, which emphasizes the urgent need for protection against harmful rays during this period.
The extreme UV levels persist even as the monsoon season approaches; June's UV Index dips slightly to 13 but returns to 14 during July and August. This high risk of sunburn continues into September, before tapering off to 12 in October. As the year draws to a close, November and December see a return to very high levels with UV Index readings of 10 and 9, respectively. Overall, Bangkok's UV Index trends underscore the importance of sun safety and protective measures, especially during the intense summer months, when exposure times are critically low.
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In Bangkok, the daylight duration exhibits a relatively stable pattern throughout the year, reflecting the city's tropical climate and proximity to the equator. January and February each enjoy about 11 hours of daylight, marking the shorter days at the outset of the year. As spring approaches, March heralds a slight increase, with daylight extending to 12 hours. This increase in daylight continues consistently through April, May, and across the summer months of June, July, and August, maintaining the 12-hour mark, which is typical for tropical regions.
As the year progresses into September, daylight duration remains steady at 12 hours, illustrating the seasonal consistency typical of Bangkok’s climate. However, a gradual decrease begins in October as daylight returns to 11 hours. November and December follow suit, also at 11 hours, rounding out the year with shorter days. This balance of daylight hours provides a stable rhythm for daily life in Bangkok, allowing both residents and visitors to enjoy the natural light throughout most of the year.
The climate in Bang Rak, Thailand, is characterized by warm temperatures and distinct wet and dry seasons. January sees a comfortable range with temperatures from 16°C to 35°C and relatively low precipitation of 29 mm. However, from April to October, temperatures remain high, peaking at 40°C in May, while rainfall intensifies, particularly in September and October with over 245 mm. Sunshine is abundant year-round, particularly in February and March with up to 336 hours. For more details, visit Bang Rak climate.
Bangkok, Thailand experiences a tropical savanna climate marked by high temperatures and significant rainfall throughout the year. The average temperatures range from a minimum of 15°C (59°F) in December to a maximum of 40°C (103°F) in May, with an overall annual average around 30°C (86°F). Rainfall peaks between May and October, with September and October receiving the highest amounts, exceeding 240 mm (9.4 in). Conversely, January and February are drier months, recording less than 30 mm (1.2 in) of precipitation. For more information, visit Bangkok climate.
Chatuchak, Thailand experiences a tropical climate characterized by high temperatures and distinct wet and dry seasons. From January to March, temperatures range from a comfortable 16°C (61°F) to 37°C (99°F), while April and May see peaks up to 40°C (103°F) with increased rainfall. The rainy season runs from June to October, with September and October receiving the highest precipitation, approximately 245 mm (9.6 in) and 250 mm (9.9 in), respectively. Sunshine is abundant year-round, peaking in March with around 336 hours. For more detailed information, visit Chatuchak climate.
The climate in Don Mueang, Thailand, is characterized by a tropical pattern with warm temperatures year-round. January sees temperatures ranging from a cool 16°C (61°F) to a hot 35°C (96°F), while peak temperatures occur in April and May, reaching up to 39°C (103°F) and 40°C (105°F), respectively. The wettest months are typically from May to September, with September experiencing the highest rainfall of 264 mm (10.4 in). Sunshine hours are abundant, particularly in February and March, which receive over 300 hours of sunshine. For more details, visit Don Mueang climate.
Dusit, Thailand experiences a tropical climate characterized by warm temperatures and distinct wet and dry seasons. January to March sees pleasant conditions with average temperatures ranging from 27°C (81°F) to 30°C (86°F), while reaching its hottest in April and May with maximums up to 40°C (103°F). The rainy season peaks between July and September, with September receiving the highest precipitation at 245 mm (9.6 in). Despite the rainfall, Dusit enjoys substantial sunshine year-round, particularly in February with 299 hours. For more detailed information, visit Dusit climate.
The climate in Huai Khwang, Thailand is characterized by warm temperatures and distinct wet and dry seasons. January marks the cooler months with average temperatures around 27°C (81°F), while April to October sees hotter days peaking at 38°C (100°F) and significant rainfall, particularly in September and October with around 245 mm (9.6 in) and 250 mm (9.9 in), respectively. The region enjoys ample sunshine from January to March, ranging from 251 to 336 hours, making it ideal for outdoor activities during these months. For more detailed information, visit Huai Khwang climate.
Khlong Toei, Thailand experiences a tropical climate characterized by hot temperatures and distinct wet and dry seasons. Average monthly temperatures range from 27°C (81°F) in the cooler months to around 30°C (86°F) in the warmer months. The area sees significant rainfall, particularly from May to October, with September and October receiving the highest precipitation levels at 245 mm and 250 mm respectively. Sunshine is abundant, with February and March boasting over 300 hours of sunlight. For more detailed climate information, visit Khlong Toei climate.
Pathum Wan, Thailand experiences a tropical climate characterized by warm temperatures and significant rainfall. Monthly average temperatures range from 27°C (81°F) in January to 30°C (86°F) in the hotter months of March to May. Rainfall peaks from May to October, with September receiving the highest at 245 mm (9.6 in). The region enjoys considerable sunshine hours, particularly in February and March, reaching up to 336 hours. For more detailed information, visit Pathum Wan climate.
Phaya Thai, Thailand experiences a tropical climate characterized by warm temperatures year-round. January sees temperatures ranging from 16°C (61°F) to 35°C (94°F), while the hottest months are April and May, with maximums reaching up to 40°C (103°F). Rainfall is highest from May to October, peaking in September with 245 mm (9.6 in), while the region enjoys substantial sunshine throughout the year, especially in March (336 hours). The cooler months of December and January receive the least precipitation, offering brighter days. For more detailed information, visit Phaya Thai climate.
Phra Nakhon, Thailand experiences a tropical climate with temperatures ranging from a mild 15°C in December to a hot 40°C in May. The region sees significant rainfall, particularly from July to October, with September and October receiving the highest precipitation, averaging around 245 mm and 250 mm respectively. Sunshine is abundant, with peak hours recorded in March at 336 hours, while January also shines brightly with 251 hours. This climate provides a warm but humid atmosphere throughout the year, making it essential to stay hydrated and protected from the sun. For more detailed information, visit Phra Nakhon climate.
Ratchathewi, Thailand, experiences a tropical climate characterized by warm temperatures year-round, with averages ranging from 27°C (81°F) in January to 30°C (86°F) in the rainy season. Precipitation peaks between May and October, with September receiving the most rainfall at 245 mm (9.6 in). Sunshine hours vary throughout the year, with March having the most sun at 336 hours. The combination of heat and humidity makes it important for visitors to prepare for both sun and rain. For more detailed information, visit Ratchathewi climate.
The climate in Samphanthawong, Thailand, features a tropical monsoon pattern characterized by warm temperatures throughout the year. Average monthly temperatures range from 27°C (81°F) in January to 30°C (86°F) during the warmer months, peaking at 40°C (103°F) in May. Rainfall is heaviest from May to October, with September receiving the most precipitation at 245 mm (9.6 in). Despite the rainy season, Samphanthawong enjoys significant sunshine, particularly in February and March, with over 300 hours of sunlight. For more detailed information, visit Samphanthawong climate.
The climate in Sathon, Thailand is characterized by high temperatures and significant rainfall, particularly from May to October. Average temperatures range from 27°C (81°F) in January to 30°C (86°F) during the hottest months, with peak highs reaching 40°C (103°F) in May. Rainfall is most abundant in September and October, with over 245 mm (9.6 in) recorded in September alone. On the brighter side, Sathon enjoys ample sunshine, particularly in February and March, where it can reach up to 336 hours. For more detailed information, visit Sathon climate.
The climate in Suan Luang, Thailand, features a tropical pattern with warm temperatures throughout the year. Monthly average temperatures range from a low of 27°C (81°F) in January to a peak of 30°C (86°F) in April and May. The rainy season peaks from May to September, with September recording the highest rainfall at 266 mm (10.5 in). Despite the rain, Suan Luang enjoys considerable sunshine, especially in February and March, with over 300 hours of sun. For more detailed information, visit Suan Luang climate.
Thon Buri, Thailand experiences a tropical climate with temperatures ranging from mild to hot throughout the year. January sees cooler temperatures with averages of 27°C (81°F), while May peaks at around 30°C (87°F) but can reach maxima of 40°C (103°F). Rainfall significantly increases from April onwards, peaking in September and October with over 245 mm (9.6 in) of precipitation. Despite the monsoon season, Thon Buri enjoys abundant sunshine, particularly in March with 336 hours. For more detailed information, visit Thon Buri climate.
In conclusion, Bangkok's climate offers a dynamic interplay of temperature, precipitation, sunshine, UV Index, and daylight duration throughout the year. With its tropical savanna classification, the city experiences distinct seasonal changes, characterized by a notable rise in temperatures and rainfall during the monsoon months, alongside a consistent high UV Index that calls for sun safety. The relatively stable daylight duration, fluctuating between 11 to 12 hours, provides a predictable pattern that complements the city's vibrant lifestyle. Understanding these climatic features is essential for residents and visitors alike, as it informs appropriate preparations for outdoor activities and fosters a deeper appreciation of Bangkok's unique meteorological environment.