Last updated: August 21, 2025
In January, Sylhet, Bangladesh experiences a mild and pleasant climate, with maximum temperatures reaching up to 29°C (84°F) and an average of 17°C (63°F). The month is characterized by cooler nights, where temperatures can drop to a minimum of 6°C (44°F), providing a refreshing contrast. Although the region generally remains dry, it receives a modest 6 mm (0.2 in) of precipitation over the course of just one day, contributing to the lush landscapes for which Sylhet is renowned. With an average humidity of 76%, visitors can enjoy the crisp air while basking in the beauty of this enchanting locale during the winter season.
In January, Sylhet, Bangladesh experiences a notable transition into the cooler months, with temperatures ranging from a brisk 6°C (44°F) at night to a comfortable maximum of 29°C (84°F) during the day, resulting in an average of 17°C (63°F). As the month unfolds, a gradual warming trend becomes evident; February sees minimums rise to 9°C (49°F) and averages climbing to 19°C (67°F). The weather continues to warm through the spring months, peaking in March with daytime highs of 34°C (93°F), signaling the approach of the hot season. April and May further amplify this warmth, showcasing maximum temperatures that consistently flirt with the 30s°C. This pattern illustrates a clear progression from cool, crisp days to the sultry warmth characteristic of the region as it gears up for its humid summer months.
In January, Sylhet experiences a notably dry start to the year, with only 6 mm (0.2 in) of precipitation falling over a mere single day. This minimal rainfall sets the stage for the subsequent months where precipitation significantly increases. As the seasons transition, February sees a slight uptick to 28 mm (1.1 in) over three days, while the onset of March brings more substantial rainfall at 117 mm (4.6 in) across nine days. The real deluge begins in April, with a dramatic rise to 503 mm (19.8 in), peaking in the monsoon months of June and July, when Sylhet receives a staggering 816 mm (32.1 in) and 895 mm (35.2 in), respectively. This trend highlights a stark contrast between January’s parched conditions and the lush, rain-soaked months that follow, underscoring the region's dynamic climatic shifts throughout the year.
In January, Sylhet, Bangladesh experiences a relatively high humidity level at 76%, making it the perfect time to feel the lingering effects of the monsoon season. As the year progresses into February, humidity begins to dip slightly to 69%, signaling a gradual shift towards drier conditions. This trend continues, with March and April witnessing even lower humidity levels of 53% and 47% respectively, creating a stark contrast to the typically muggy summer months. However, as the calendar turns to May, humidity surges back up to 79%, heralding the arrival of the pre-monsoon season. The months from June to August see peak humidity levels, soaring as high as 91% in July, enveloping the region in a tropical embrace. Following the monsoon, humidity remains consistently high through September to November, with only minor fluctuations around 88-89%, before tapering off slightly in December to 86%. Thus, Sylhet's humidity paints a vivid picture of the region's tropical climate, with a clear rhythm of wetness shaping each month.
In January, Sylhet, Bangladesh experiences a UV Index of 6, categorized as high, which means it’s important to take precautions if you're outdoors for more than 25 minutes. This trend continues into February with the UV Index increasing slightly to 7, maintaining the same burn time. As March rolls in, the UV levels spike dramatically, reaching a very high level of 9, reducing safe sun exposure time down to just 15 minutes. April further intensifies this trend with a peak UV Index of 10, and the extreme values of May through July, where the Index hits 13 to 14, indicating an extreme risk of harm from unprotected sun exposure—limited to just 10 minutes. By August and September, the levels drop slightly but remain dangerous at 13, before tapering off in the later months. As the year wraps up, October arrives with a 10 and November sees an 8, concluding the year with a return to a high UV Index of 6 in December. For comprehensive details on UV exposure in Sylhet, you can refer to the Sylhet UV Index.
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January in Sylhet, Bangladesh, welcomes the year with 245 hours of sunshine, laying the groundwork for a gradual increase in daylight as winter gives way to spring. By February, sunlight climbs to 288 hours, hinting at the warmer days ahead. As March strides in with 333 hours, it's clear that spring is fully blossoming, offering the brightest month of the year. Although April and May see a slight decline with 308 and 311 hours respectively, they still retain ample sunshine, ushering in summer's warmth. A noticeable dip occurs in July, where sunshine drops to 222 hours, marking the height of the monsoon season. However, the clouds begin to part by August, recovering to 247 hours. The trend continues into September with 262 hours, before October and November return to sunnier days, boasting 301 and 296 hours respectively. By December, the sun again graces Sylhet for 296 hours, closing the year on a warm note. This rhythm of sunlight encapsulates the diverse seasons of Sylhet, making each month unique yet connected under the vibrant Bangladeshi sky.
In Sylhet, Bangladesh, January boasts an impressive 87% chance of sunny weather, making it one of the sunniest months of the year. This trend of bright days continues into February, which features an 85% likelihood of sun, before gradually decreasing in March to 75%. As the seasons shift, the probability of sunshine declines more sharply, plummeting to just 40% by May. The monsoon months of June through August are marked by a stark contrast, where the chance of sun drops dramatically to 7%, 4%, and 5%, respectively. However, as the year progresses into autumn, the likelihood begins to recover, with November at 82% and December at 67%. This pattern highlights January's position as a gateway to a winter filled with bright, sunny days before the arrival of the monsoon rains.
In January, Sylhet, Bangladesh experiences a daylight duration of about 10 hours, marking the beginning of a gradual increase that signals the arrival of spring. As the months progress into February and March, daylight expands to 11 and 12 hours, respectively, creating a vibrant atmosphere perfect for outdoor activities. April maintains this 12-hour trend, before May introduces longer days with 13 hours, fostering a lively environment as nature flourishes. The consistency of 13 hours continues through June and July, allowing plenty of time for engaging in various pursuits. However, as summer transitions to fall, daylight begins to recede, with August and September reflecting 12 hours again, followed by a gradual decline to 11 hours in October. Finally, November and December settle back at 10 hours, creating a full circle that showcases the rhythmic dance of daylight throughout the year.
In January, Sylhet, Bangladesh, experiences a gentle breeze with an average wind speed of 1.4 m/s (3 mph), setting a tranquil tone for the start of the year. As the month transitions into February, the wind picks up slightly to 1.5 m/s before reaching its peak in March at 1.8 m/s. However, this increase is fleeting, as the wind settles back to 1.5 m/s in April and gradually returns to the January pace by May. Interestingly, the wind remains consistently mild throughout the summer months, maintaining a steady 1.4 m/s until a slight decrease in September and October. As the year draws to a close, the winds in November and December stabilize back at 1.4 m/s and 1.5 m/s, respectively. Overall, January's breezy calm reflects a broader trend of mild wind patterns throughout the season, creating a serene backdrop for this lush region.
Weather in Sylhet varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Sylhet, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, the weather features milder temperatures with a minimum of 6°C (44°F) and an average of 17°C (63°F), reaching a maximum of 29°C (84°F). The month sees minimal precipitation with just 6 mm (0.2 in) over the course of only one day, and humidity levels are relatively high at 76%. In contrast, February experiences slightly warmer conditions with minimum temperatures rising to 9°C (49°F) and an average of 19°C (67°F), peaking at 30°C (86°F). However, February also brings more rain, totaling 28 mm (1.1 in) over three days, and a decrease in humidity to 69%. For a more detailed look at February's weather, visit Sylhet weather in February.
January and March present a marked contrast in weather conditions. In January, temperatures range from a minimum of 6°C (44°F) to a maximum of 29°C (84°F), with an average of 17°C (63°F) and very low precipitation at just 6 mm (0.2 in) over the course of 1 day, resulting in high humidity at 76%. In contrast, March experiences warmer temperatures, with a minimum of 12°C (54°F) and a maximum of 34°C (93°F), averaging 23°C (74°F). However, March also sees significantly more precipitation, totaling 117 mm (4.6 in) across 9 days, and lower humidity levels at 53%. For more details, you can check out Sylhet weather in March.
January and April present significantly different weather conditions. In January, temperatures range from a cool minimum of 6°C (44°F) to a warm maximum of 29°C (84°F), with average temperatures around 17°C (63°F). Precipitation is minimal, with only 6 mm (0.2 in) over a single day and humidity levels at a high 76%. In stark contrast, April experiences much warmer temperatures with a minimum of 17°C (63°F) and a maximum soaring to 35°C (96°F), averaging 25°C (78°F). However, it also brings substantial rainfall, measuring 503 mm (19.8 in) across 19 days, along with a much lower humidity of 47%. For a detailed look at April weather, visit Sylhet weather in April.
In January, the weather is relatively mild, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 29°C (84°F), and an average temperature of 17°C (63°F). It experiences low precipitation, with only 6 mm (0.2 in) over just one day, resulting in a humidity level of 76%. In contrast, May brings a significant increase in warmth, with temperatures ranging from a minimum of 20°C (68°F) to a scorching maximum of 36°C (98°F), averaging around 27°C (80°F). However, May is also marked by heavy rainfall, totaling 520 mm (20.5 in) over 27 days, and slightly higher humidity at 79%. For more details, you can check Sylhet weather in May.
In January, the weather is mild with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 29°C (84°F) and an average of 17°C (63°F). The month experiences minimal precipitation, with only 6 mm (0.2 in) recorded over just 1 day, along with a humidity level of 76%. In contrast, June brings significantly warmer temperatures, with a minimum of 23°C (73°F), an average of 28°C (82°F), and a maximum of 35°C (96°F). However, it is also characterized by heavy rainfall, accumulating up to 816 mm (32.1 in) across 29 days, and a slightly higher humidity level of 86%. For more detailed information, you can check Sylhet weather in June.
In January, the weather is characterized by milder temperatures, ranging from a minimum of 6°C (44°F) to a maximum of 29°C (84°F), with an average of 17°C (63°F). Precipitation is minimal, with only 6 mm (0.2 in) occurring over just one day and humidity levels at a comfortable 76%.
In stark contrast, July showcases a much warmer climate, with temperatures soaring between 23°C (73°F) and 37°C (99°F), averaging 28°C (83°F). The month is also marked by significant rainfall, totaling 895 mm (35.2 in) over 30 days, contributing to a higher humidity level of 91%. For more insights on how the weather in Sylhet during July affects daily life, check out Sylhet weather in July.
In January, the weather is considerably milder, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 29°C (84°F) and only a slight precipitation of 6 mm (0.2 in) over just one day. Conversely, August experiences significantly warmer temperatures, with a minimum of 25°C (76°F) and highs reaching up to 37°C (99°F). Notably, August is marked by heavy rainfall, accumulating 749 mm (29.5 in) over nearly the entire month, resulting in high humidity levels around 90%. For more details, you can check Sylhet weather in August.
January and September exhibit stark contrasts in weather patterns. In January, temperatures range from a cooler 6°C (44°F) to a warm 29°C (84°F), with an average of 17°C (63°F) and minimal precipitation of just 6 mm (0.2 in) over a single day. The humidity levels are moderate at 76%. In contrast, September is significantly warmer; temperatures vary from a minimum of 24°C (75°F) to a scorching maximum of 37°C (98°F), with an average temperature of 28°C (83°F). Rainfall is substantial during this month, totaling 466 mm (18.3 in) and occurring on 26 days, contributing to higher humidity levels at 89%. For more detailed information, visit Sylhet weather in September.
In January, the weather is notably milder, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 29°C (84°F) and an average of 17°C (63°F). This month enjoys relatively low precipitation, with just 6 mm (0.2 in) over 1 day and a humidity level of 76%. In contrast, October brings significantly warmer conditions, with temperatures that hover between a minimum of 18°C (64°F) and a scorching maximum of 36°C (98°F), averaging 27°C (80°F). The rainfall in October is substantial, totaling 247 mm (9.7 in) across 16 days, and humidity rises to 89%. For a detailed look at the weather patterns, visit Sylhet weather in October.
When comparing the weather in January and November, it is evident that November tends to be warmer and wetter. In January, temperatures range from a minimum of 6°C (44°F) to a maximum of 29°C (84°F), with an average of 17°C (63°F) and only 6 mm (0.2 in) of precipitation over a single day. On the other hand, November shows a minimum temperature of 14°C (57°F) and can reach up to 32°C (89°F), averaging 23°C (73°F), with a higher total precipitation of 20 mm (0.8 in) across three days. Additionally, humidity levels are noticeably higher in November at 88%, compared to 76% in January. For more details, check out Sylhet weather in November.
In January, the weather is slightly cooler with temperatures ranging from a minimum of 6°C (44°F) to an average of 17°C (63°F) and reaching a maximum of 29°C (84°F). The month sees minimal precipitation of just 6 mm (0.2 in) over only one day, contributing to a humidity level of 76%. In contrast, December is warmer overall, with temperatures varying from a minimum of 10°C (50°F) to an average of 19°C (66°F) and peaking at 29°C (85°F). December experiences significantly more rainfall, accumulating 40 mm (1.6 in) over two days, and has higher humidity at 86%. For more details, you can check Sylhet weather in December.
In January, Sylhet experiences a refreshing transition compared to the hotter months that precede it. With a maximum temperature of 29°C, this month offers a comfortable warmth, underlying an average of 17°C, which is much cooler than the peak temperatures of the summer. The minimal precipitation of just 6 mm over one day signifies a relatively dry start to the year, allowing for clearer skies and fewer disruptions. Additionally, the humidity level of 76% adds a pleasant crispness to the air, making it a favorable time for outdoor activities. For a closer look at the overall weather patterns, visit Sylhet Climate.