Last updated: August 21, 2025
August in Sylhet, Bangladesh, is characterized by high temperatures and significant precipitation, creating a unique and vibrant atmosphere. With a maximum temperature reaching 37°C (99°F) and an average of 28°C (84°F), the warm days can feel intense. The minimum temperature holds steady at 25°C (76°F), offering some relief during the nights. August sees an impressive 749 mm (29.5 in) of rainfall over 30 days, contributing to the lush greenery the region is renowned for. The humidity levels soar to a sweltering 90%, making it feel even hotter and more tropical. This month paints a vivid picture of Sylhet’s monsoon season, drawing in nature lovers and adventure seekers alike.
In August, Sylhet, Bangladesh, experiences a notable shift in temperatures, where the minimum rises to a mild 25°C (76°F) and the average hovers around 28°C (84°F). This month finds itself at the height of warmth, with highs reaching 37°C (99°F), matching the hot streak seen in July. The weather remains humid, characteristic of the rainy monsoon season, keeping the region lush and vibrant. Overall, August offers a blend of tropical heat and moisture, indicative of the patterns that define Sylhet's dynamic climate throughout the year, as it transitions from the sweltering peak of summer into the slightly cooler months ahead.
In August, Sylhet experiences a significant precipitation spike, with 749 mm (29.5 in) of rainfall recorded over 30 days. This month continues the region's trend of heavy rainfall established in the preceding months, particularly following the peaks in June (816 mm) and July (895 mm). The data reveals a distinct pattern of monsoonal influence, where the arrival of the wet season culminates in a dramatic increase in precipitation, nurturing the lush landscapes of this area. As the year progresses into September, this deluge slowly tapers off to 466 mm (18.3 in), indicating the transition towards drier months while still maintaining a noteworthy amount of rainfall. This consistent rainfall not only shapes the climate but also supports the rich biodiversity and agriculture that characterize Sylhet.
In August, Sylhet, Bangladesh, experiences a significant peak in humidity, reaching 90%, which is emblematic of the monsoon season's grip on the region. Following a steady rise from July's already high 91%, this month continues the trend of high humidity that begins in June at 86%. Notably, April marks the transition into this moist climate, as humidity drops to its lowest at 47% before steadily climbing back to the high levels typical of summer. As the year progresses, humidity consistently hovers in the upper ranges, with only a slight decrease during the winter months. This pattern highlights Sylhet's lush, vibrant landscapes shaped by its consistently high humidity, particularly during the summer months.
In August, Sylhet, Bangladesh experiences a UV Index of 13, classified as extreme, with a dangerously short burn time of just 10 minutes. This trend is consistent with the preceding months of June and July, which also recorded a UV Index of 13 and 14 respectively, indicating a peak season for UV radiation. Interestingly, the UV Index tends to rise sharply beginning in March, escalating from a high of 6 in January to its extreme summer levels, while it starts to taper off gently in the autumn months. As you enjoy the sunny August days, be mindful of the intense sun exposure—wear protective clothing and sunscreen! For more detailed insights on UV levels throughout the year, check out Sylhet UV Index.
UV Risk Categories
In August, Sylhet experiences a delightful 247 hours of sunshine, making it a pleasant summer month for residents and visitors alike. While this is slightly lower than the summer peaks of March and April, it still contributes to a robust total of sunny days throughout the year. The trend reveals a gradual decline in sunshine hours from the early summer months—most notably from a high of 333 hours in March to 222 hours in July. As the region transitions into the rainy season with September following closely at 262 hours, August serves as a gentle reminder of summer's lingering warmth before the autumn rains set in. Overall, Sylhet's yearly sunshine patterns highlight a beautiful ebb and flow, making each month unique and inviting.
The likelihood of sunny weather in August in Sylhet, Bangladesh, takes a sharp dive, dropping to a mere 5% chance of sunshine. This trend starkly contrasts with the earlier months of the year, particularly January and February, which enjoy sunny probabilities of 87% and 85%, respectively. As we progress through the spring into the monsoon season, the chances plummet, with July and August being the least favorable months for sun seekers. This stark decline highlights a significant shift from the early year’s vibrant sunshine, making August one of the dreariest months in Sylhet in terms of weather. By September, there is a slight uptick to 19%, suggesting that while August is typically gloomy, a return to more favorable conditions is just around the corner.
In August, Sylhet, Bangladesh enjoys approximately 12 hours of daylight, continuing a trend established in the preceding months. After a steady increase from just 10 hours in January, daylight reaches its peak with 13 hours during the summer months of May through July. As August rolls in, the duration slightly diminishes, reflecting the gradual transition towards the end of summer. This pattern of daylight duration not only marks the changes in seasons but also highlights the region's rich climatic variability, with longer days inviting vibrant festivities and outdoor activities throughout the summer. As autumn approaches in September, daylight will stabilize once more at 12 hours, offering a balance between summer's exuberance and the cooler months ahead.
In August, the winds in Sylhet, Bangladesh maintain a gentle consistency, with an average speed of 1.4 m/s (3 mph), mirroring the conditions seen throughout the summer months. This stable breeze carries a soothing quality, offering a brief, refreshing respite from the humid heat that typically envelops the region at this time of year. As the monsoon season inches towards its conclusion, the wind speed remains modest, showcasing a subtle decline as September approaches. Overall, the wind patterns in Sylhet reflect a serene rhythm, inviting moments of tranquility amid the lush, vibrant landscapes characteristic of this picturesque locale.
Weather in Sylhet varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Sylhet, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present starkly contrasting weather conditions. In August, temperatures range from a minimum of 25°C (76°F) to a scorching maximum of 37°C (99°F), with an average temperature of 28°C (84°F). This month is characterized by high humidity at 90% and significant rainfall, totaling 749 mm (29.5 inches) over 30 days. In contrast, January boasts much cooler temperatures, with a minimum of 6°C (44°F) and a maximum of 29°C (84°F), averaging around 17°C (63°F). Precipitation is minimal during this time, with only 6 mm (0.2 inches) falling on just one day, and humidity levels are lower at 76%. For more details, you can check this link: Sylhet weather in January.
August and February present a stark contrast in weather patterns. In August, temperatures soar with a minimum of 25°C (76°F) and can reach highs of 37°C (99°F), making it the hottest month of the year. The humidity is notably high at 90%, contributing to a feeling of intense heat, and it sees significant rainfall, with 749 mm (29.5 in) of precipitation spread across 30 days. In contrast, February offers a much cooler climate, with temperatures ranging from a low of 9°C (49°F) to a pleasant average of 19°C (67°F) and a maximum of 30°C (86°F). Rainfall is minimal at just 28 mm (1.1 in) over 3 days, and humidity is lower at 69%, creating a more comfortable atmosphere. For more details on February weather, please visit Sylhet weather in February.
When comparing the weather in August and March, a striking contrast emerges in temperature, precipitation, and humidity levels. August is significantly warmer, with average temperatures reaching 28°C (84°F) and maximums soaring up to 37°C (99°F). The humidity is also at a high 90%, making it feel even hotter, while the region experiences substantial rainfall, averaging 749 mm (29.5 in) over 30 days. In contrast, March boasts milder conditions, with temperatures ranging from a minimum of 12°C (54°F) to an average of 23°C (74°F) and maximums of 34°C (93°F). Additionally, March is much drier, receiving only 117 mm (4.6 in) of precipitation over 9 days, with a more comfortable humidity level of 53%. For more detailed insights into the weather in March, you can visit Sylhet weather in March.
August and April present contrasting weather patterns. In August, temperatures range from a minimum of 25°C (76°F) to a maximum of 37°C (99°F), with an average of 28°C (84°F). This month also experiences high humidity at 90% and significant rainfall of 749 mm (29.5 in) over 30 days, making it one of the wettest months of the year. In contrast, April has milder temperatures that range from a minimum of 17°C (63°F) to a maximum of 35°C (96°F), with an average temperature of 25°C (78°F). The precipitation in April totals 503 mm (19.8 in) across 19 days, and the humidity is considerably lower at 47%. For a detailed look at how April weather unfolds, visit Sylhet weather in April.
In comparing the weather between August and May, August typically experiences higher temperatures and humidity. While the average temperature in August hovers around 28°C (84°F), it reaches a maximum of 37°C (99°F) with a notable humidity level of 90%. In contrast, May sees slightly lower temperatures, with an average of 27°C (80°F) and a maximum of 36°C (98°F), coupled with a more moderate humidity of 79%. Precipitation is considerably heavier in August, amassing 749 mm (29.5 in) over 30 days, compared to May's 520 mm (20.5 in) spread over 27 days. This makes August not only warmer but also wetter than May. For more detailed information, you can check Sylhet weather in May.
When comparing the weather in August and June, both months experience high temperatures, but August tends to be slightly warmer, with minimum temperatures around 25°C (76°F) compared to June's 23°C (73°F). The average temperatures for both months are similar, hovering around 28°C (82°F), but August reaches higher maximums of 37°C (99°F) versus June's 35°C (96°F). In terms of precipitation, June has a higher rainfall total of 816 mm (32.1 in) over 29 days, while August records 749 mm (29.5 in) over 30 days. Additionally, humidity levels are marginally higher in August at 90%, compared to June's 86%. For a more detailed look at the weather in June, you can check Sylhet weather in June.
In comparing the weather between July and August, both months exhibit similar maximum and average temperatures, with highs reaching up to 37°C (99°F) and averages around 28°C (84°F). However, July tends to be slightly cooler with a minimum of 23°C (73°F), compared to August's minimum of 25°C (76°F). July also sees more rainfall, accumulating 895 mm (35.2 in) over 30 days, whereas August has a total precipitation of 749 mm (29.5 in) during the same number of days. Humidity remains high in both months, with July slightly higher at 91% compared to August's 90%. For more detailed insights into Sylhet's weather specifically in July, you can refer to Sylhet weather in July.
August and September experience similar warm temperatures, with August recording a minimum of 25°C (76°F), an average of 28°C (84°F), and a maximum of 37°C (99°F), while September boasts a slightly lower minimum of 24°C (75°F), an average of 28°C (83°F), and a maximum of 37°C (98°F). However, August is notably wetter, with a significant precipitation level of 749 mm (29.5 in) spread over 30 days compared to September's 466 mm (18.3 in) over 26 days. The humidity remains high in both months, with August at 90% and September slightly lower at 89%. For more details on September weather, you can visit Sylhet weather in September.
In August, the weather is characterized by higher temperatures, with a minimum of 25°C (76°F), an average of 28°C (84°F), and a maximum reaching up to 37°C (99°F). This month is also marked by heavy rainfall, with a staggering 749 mm (29.5 in) of precipitation spread across 30 days, resulting in a humidity level of 90%. In contrast, October brings a noticeable drop in temperatures, with a minimum of 18°C (64°F), an average of 27°C (80°F), and a maximum of 36°C (98°F). The month sees significantly less rainfall, totaling 247 mm (9.7 in) over just 16 days, leading to slightly lower humidity at 89%. For more detailed insights into October's weather, you can visit Sylhet weather in October.
August and November present stark contrasts in weather conditions. In August, temperatures soar with a minimum of 25°C (76°F) and can reach a scorching maximum of 37°C (99°F), coupled with high humidity levels of 90%. The month is also defined by significant rainfall, averaging 749 mm (29.5 in) over 30 days, creating a truly tropical atmosphere. In contrast, November offers a much milder climate with temperatures ranging from a comfortable minimum of 14°C (57°F) to a pleasant maximum of 32°C (89°F). Additionally, it experiences minimal precipitation, only 20 mm (0.8 in) over just 3 days, and slightly lower humidity at 88%. For more details, you can check Sylhet weather in November.
The weather in August is characterized by high temperatures, with a minimum of 25°C (76°F), an average of 28°C (84°F), and a sweltering maximum of 37°C (99°F). This month also sees significant rainfall, totaling 749 mm (29.5 in) over 30 days, coupled with high humidity levels at 90%. In contrast, December experiences much cooler temperatures, with a minimum of 10°C (50°F) and an average of 19°C (66°F), reaching a maximum of 29°C (85°F). Precipitation is minimal in December, with only 40 mm (1.6 in) over just 2 days and a slightly lower humidity at 86%. For further details, you can check Sylhet weather in December.
August in Sylhet is characterized by its intense heat and high humidity, setting it apart from other months. With maximum temperatures soaring around 37°C and a muggy 90% humidity, the weather can feel quite oppressive. This month also brings substantial rainfall, with nearly 749 mm falling over 30 days, making it the wettest time of the year. As a result, August’s climate creates a vibrant yet challenging atmosphere, significantly different from the drier months that precede it. To learn more about weather patterns year-round, check out Sylhet Climate.