Last updated: April 17, 2025
Khulna, Bangladesh exhibits a tropical climate categorized under the Köppen-Geiger climate classes Aw (tropical savanna) and Am (tropical monsoon). The region experiences a remarkable temperature range, with a minimum of 7°C (45°F) in January, rising to an average of 26°C (79°F) throughout the year. The peak intensity of heat occurs in April, where maximum temperatures can soar to 40°C (105°F), underscoring the significant seasonal variation and the impact of monsoonal patterns on local weather conditions. The interplay of these climatic elements plays a crucial role in shaping the ecological and economic landscape of Khulna.
In Khulna, Bangladesh, temperature patterns exhibit a distinct seasonal cycle, characterized by both cooler and warmer periods throughout the year. January marks the coldest month, with minimum temperatures dropping to 7°C (45°F), while average temperatures gradually rise through February to about 21°C (70°F). The transition into spring brings a significant warming trend, with March and April reaching maximum temperatures of 39°C (103°F) and 40°C (105°F), respectively. As the monsoon season approaches in May, temperatures stabilize around 29°C (85°F), accompanied by high humidity. The summer months of June and July maintain warm averages of 30°C (85°F) and 29°C (85°F), but maximum temperatures slightly dip to the upper 30s°C. By late summer and into early autumn, from August to October, the temperatures remain consistent, averaging around 29°C (85°F), before cooling down again in November and December, as the year ends with minimums falling back to 9°C (49°F). This cycle illustrates the region's tropical climate dynamics, shaped by the interplay of seasonal variations.
In Khulna, January experiences a minimum temperature of 10°C (50°F) and peaks at 39°C (102°F) in April, while Bagerhat records a slightly cooler minimum of 9°C (49°F) in January, also reaching 39°C (102°F) in April. Jessore has the lowest January minimum at 8°C (46°F), with a maximum temperature of 39°C (103°F) during the same month. For more detailed insights, you can explore the monthly temperatures in Khulna, Bagerhat, and Jessore through the provided links: monthly temperatures in Khulna, monthly temperatures in Bagerhat, and monthly temperatures in Jessore.
Khulna, Bangladesh experiences pronounced seasonal variations in precipitation, heavily influenced by the monsoon climate. The early part of the year, particularly January and February, sees minimal rainfall, totaling just 5 mm (0.2 in) and 9 mm (0.4 in) respectively, indicating a relatively dry period. As the region transitions into spring, precipitation begins to rise, with March recording 38 mm (1.5 in), followed by a substantial increase in April to 122 mm (4.8 in). The onset of the monsoon in May marks a sudden spike in rainfall, reaching 207 mm (8.2 in), and continues to escalate, peaking in June with an impressive 365 mm (14.4 in).
The high levels of precipitation persist through the summer months, with July and August also experiencing significant rainfall at 358 mm (14.1 in) and 300 mm (11.8 in), respectively. As the monsoon season wanes in September, rainfall decreases to 230 mm (9.0 in), followed by a gradual decline in October (166 mm or 6.5 in) and an even drier November and December, both receiving 45 mm (1.8 in). This precipitation pattern is accompanied by the number of rainy days peaking in June and July, with 25 and 28 days respectively, which dramatically contrasts with the almost dry months of January and February. Overall, Khulna's precipitation trends underscore the challenges and significance of monsoonal rains, vital for sustaining the region’s agriculture and water resources.
In Khulna, Bangladesh, the humidity levels display a distinctive pattern throughout the year, reflecting the region's tropical climate. Beginning with a more comfortable 55% in January, humidity steadily decreases, reaching a low of 31% in April. However, as the pre-monsoon heat rises, May sees a jump to 57%. The monsoon season, from June to September, brings a dramatic increase in moisture, peaking at an astonishing 86% in September. Following this peak, humidity gradually declines but remains relatively high, ending the year at 68% in December. This trend showcases Khulna's transition from dry to humid conditions, underscoring the significant impact of the monsoon on the local climate.
In Khulna, Bangladesh, sunshine duration exhibits a notable seasonal trend, marking a steady increase from the winter months into spring and early summer. January begins with 240 hours of sunshine, gradually rising as February approaches 284 hours. March sees this trend continue, delivering 326 hours, which sets the stage for the warmer months. Despite a slight dip in April to 322 hours, the sunshine hours peak in May at 327 hours, providing a vibrant atmosphere just before the onset of the monsoon season. This increase in sunlight during the spring months plays a crucial role in agricultural activities as farmers prepare for the rainy season.
As the monsoon clouds gather in June, sunshine hours decrease to 273 hours, a trend that persists into July and September, with both months recording 272 and 273 hours of sunlight, respectively. The post-monsoon months show a slight recovery, with sunshine duration reaching 286 hours in October and 284 hours in November. December sees a modest decline to 275 hours, rounding off the year with reduced sunlight but still maintaining a relatively bright climate compared to the earlier monsoon months. Overall, the sunshine patterns in Khulna not only highlight the region's climatic shifts but also underscore the importance of sunlight in supporting local agriculture and daily life throughout the year.
The UV Index in Khulna, Bangladesh, displays significant seasonal variation, reflecting the intensity of sunlight throughout the year. Starting in January with a UV Index of 6, categorized as high, individuals are advised to limit sun exposure to 25 minutes to avoid skin damage. As the region transitions into February and March, the UV Index escalates to 8 and 10, respectively, classified as very high. This increase underscores the growing intensity of sunlight as temperatures rise, necessitating protective measures when outdoors, particularly during peak hours.
As the summer sun reaches its zenith, UV Index values peak in May, June, July, and August, consistently rated as extreme with values up to 14. During this period, individuals can only safely remain in the sun for about 10 minutes without protection, highlighting the importance of sun safety. September sees a slight moderation with a UV Index of 13, followed by a gradual decline in October to 11, and returning to very high levels in November at 8. By December, the UV Index decreases to 6 once more, coinciding with a return to the high exposure category. This cyclical pattern emphasizes the critical need for UV protection measures, especially during the summer months when the risk of harm from sun exposure is greatest.
UV Risk Categories
In Khulna, Bangladesh, daylight duration exhibits a striking annual pattern, commencing with approximately 10 hours in January. As the year progresses into February, daylight increases to 11 hours, marking the slow but steady transition toward longer days. The arrival of spring sees March rise further to 12 hours, maintaining this duration through April. May signals the onset of peak daylight, stretching to 13 hours, a trend that continues into June and July, providing ample sunlight during the warmer months, crucial for agricultural activities and daily life.
As summer wanes, daylight duration begins to taper off from August, with the days shortening back to 12 hours. This gradual decrease persists into September and October, where daylight is recorded at 12 and 11 hours respectively. By November, daylight falls back to 11 hours, and finally returns to 10 hours in December, completing the cycle. This rhythm of increasing and decreasing daylight not only marks the changing seasons in Khulna but also influences local lifestyles, culture, and agricultural practices throughout the year.
Bagerhat, Bangladesh experiences a tropical climate characterized by warm temperatures and significant rainfall throughout the year. January starts with cooler temperatures averaging around 18°C (65°F), while April and May see highs reaching up to 39°C (102°F). The monsoon season peaks from June to August, bringing heavy rainfall, with June averaging 367 mm (14.5 in). Despite the rain, sunshine is abundant, particularly from March to May, with over 330 hours of sun each month. For more detailed information, visit Bagerhat climate.
The climate in Jessore, Bangladesh, is characterized by a tropical monsoon pattern, featuring considerable temperature variation throughout the year. January sees cooler temperatures with lows around 8°C (46°F) and maxing at 30°C (86°F), while April and May bring warmer conditions, peaking at 39°C (103°F) and 38°C (101°F) respectively. Precipitation is notably high from April to June, reaching up to 350 mm (13.8 in) in June, marking the peak of the monsoon season. Despite the heavy rains, ample sunshine persists, with March and May enjoying over 320 hours of sunlight. For detailed information, visit Jessore climate.
Khulna, Bangladesh experiences a tropical climate characterized by warm temperatures and significant rainfall, particularly during the monsoon season from June to September. The temperature ranges from a cooler 10°C (50°F) in January to a peak of 39°C (102°F) in April. Rainfall varies dramatically, with June and July receiving up to 356 mm (14.0 in), while January has only 4 mm (0.2 in). Despite the rainy months, sunshine is abundant, peaking at 333 hours in May. For detailed climate statistics, visit Khulna climate.
Kushtia, Bangladesh experiences a tropical climate characterized by warm temperatures and significant rainfall, particularly from April to September. January marks the coolest month with temperatures dropping to a minimum of 7°C (46°F), while March to May sees the hottest days, peaking at 38°C (101°F). Rainfall is heaviest in June, averaging 353 mm (13.9 in), contributing to the region's lush landscapes. Throughout the year, sunshine hours remain relatively high, with March receiving the most at 327 hours. For detailed climate insights, visit Kushtia climate.
In conclusion, the climate of Khulna, Bangladesh, is marked by its distinct seasonal variations in temperature, precipitation, sunshine, UV Index, and daylight duration. The region experiences a tropical climate characterized by sweltering summers, particularly from March through July, when temperatures peak and UV Index levels reach extreme categories. Meanwhile, the monsoon season brings significant rainfall and influences daily weather patterns, emphasizing the importance of these climatic factors for local agriculture and livelihoods. Additionally, the fluctuation in daylight hours throughout the year plays a crucial role in daily activities and natural rhythms. Understanding these climatic trends is essential for developing effective strategies for agriculture, health awareness, and sustainable resource management in this vibrant region.