Last updated: August 21, 2025
In Koch Bihar, India, September unveils a tapestry of warm temperatures and abundant precipitation. With a maximum of 37°C (98°F) and an average of 29°C (84°F), the month remains notably warm, while nighttime temperatures dip to a minimum of 23°C (73°F). Rainfall is prevalent, with 527 mm (20.8 in) collected over 27 days, creating a humid atmosphere, often reaching 93% humidity. This combination of warmth and moisture shapes the vibrant landscapes and dynamic weather patterns characteristic of the region during this time.
In Koch Bihar, India, September marks a transitional phase, where the lingering warmth of summer gradually gives way to cooler months. With minimum temperatures averaging around 23°C (73°F) and maximums reaching up to 37°C (98°F), the days remain warm, yet significantly milder than the peak summer months. The average temperature hovers at a comfortable 29°C (84°F), providing a pleasant atmosphere for outdoor activities. As the monsoon begins to fade, humidity levels drop slightly, making September a more enjoyable month compared to the preceding rainy season. This shifting climate not only enhances the region's natural beauty but also signals a gradual approach toward the refreshing autumn temperatures of October.
September in Koch Bihar, India, experiences a remarkable precipitation total of 527 mm (20.8 in), indicating a continuation of the monsoon season's intensity. While this amount is lower than the peak months of July and August, it still signifies a substantial contribution to the region's annual rainfall, supporting the lush landscapes typical of this time of year. The 27 rainy days in September reflect a slightly reduced frequency compared to the earlier summer months, yet the persistent drizzle and sporadic downpours keep the atmosphere humid and vibrant. Overall, September serves as a bridge between the peak monsoon and the gradual transition to the drier months ahead, maintaining the region's ecological richness until October's expected decrease in rainfall.
September in Koch Bihar, India, is characterized by high humidity levels, which peak at an impressive 93%, mirroring the wettest months of the year. This month stands out in the annual cycle, as the region transitions from the intense moisture of the monsoon season into the slightly drier autumn months. Following the humid July and August, which also register at 93%, September maintains this sticky atmosphere before a gradual decrease begins in October. Notably, the shift from the arid conditions of March and April, with humidity rates dipping as low as 34%, underscores the stark contrast and highlights the region's climatic variability. As the year progresses, Koch Bihar naturally fluctuates between dry spells and high humidity, enriching the local environment and influencing daily life.
As September rolls into Koch Bihar, India, residents and visitors alike should brace for a high UV Index of 11, categorizing this month within the extreme exposure range. This continues the trend of elevated UV levels established over the summer months, peaking with June and July at indices of 12 and 13. The intense sun means you'll need to limit your time outdoors, as the risk of skin damage sharply rises with a burn time of just 10 minutes. Following September, the UV Index decreases to 9 in October, indicating a slight reprieve from the summer's harsh rays. For those planning outdoor activities, it's essential to stay informed and protected; check the latest updates at Koch Bihar UV Index.
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As the seasons transition, September in Koch Bihar brings a warm embrace of sunlight, totaling 254 hours of radiant daylight. This month showcases a gentle decline from the summer highs of May and April, which boasted over 300 hours each, hinting at the impending shift into autumn. Following the relatively cooler and cloudier months of July and June, September finds a comfortable middle ground, maintaining a vibrant atmosphere that's perfect for outdoor activities. With daylight hours gradually increasing again in October, there's a promise of more sunny days ahead, making September a delightful prelude to the festive months that follow.
The likelihood of sunny weather in September in Koch Bihar, India, stands at 26%, a slight uptick from the exceptionally low numbers of the preceding months, July and August, which see almost no sunlight. As the monsoon season fades, September offers a modest chance for clearer skies, yet still falls short compared to the sunnier months of February and November, which boast probabilities above 79%. This transition period marks a gradual return to more favorable weather conditions, making September a time of possibility, albeit one still tempered by the remnants of monsoon clouds. Overall, while the chance of sun in September is notably higher than in the summer months, it remains a modest prospect within the context of the year.
In Koch Bihar, India, the daylight duration throughout the year showcases a fascinating rhythm influenced by changing seasons. As January kicks off with 10 hours of daylight, the days progressively lengthen, reaching a peak of 13 hours from May to August, inviting a vibrant atmosphere. However, as summer wanes into September, daylight begins to taper off slightly, returning to 12 hours. This transition marks the start of a gradual decline as the days contract again through October and November, ultimately settling back at 10 hours by December. This cyclical pattern not only highlights the region's climatic shifts but also sets the stage for seasonal activities and variations in daily life.
In Koch Bihar, India, September brings a noticeable shift in the wind, with average speeds dipping to 1.5 m/s (3 mph), marking a gentle lull compared to the summer months. This decline follows a gradual increase in wind strength from January to April, where speeds steadily rose from 1.7 m/s (4 mph) to 2.5 m/s (6 mph). However, as the monsoon recedes, the winds taper off, echoing the quieter atmosphere of early autumn. The trend suggests a transition toward calmness in the air, as nature prepares for the cooler months ahead, with wind speeds only slightly picking up in October. Overall, September offers a serene backdrop where quiet winds whisper tales of seasonal change.
Weather in Koch Bihar varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Koch Bihar, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January offer a stark contrast in weather conditions. September boasts warm temperatures, with a minimum of 23°C (73°F) and an average of 29°C (84°F), reaching highs of up to 37°C (98°F). This month also experiences significant rainfall, with 527 mm (20.8 in) over 27 days, accompanied by high humidity at 93%. In contrast, January brings cooler, more temperate weather, featuring a minimum of 6°C (44°F) and an average of 17°C (63°F), peaking at 29°C (84°F). Precipitation is minimal, with only 6 mm (0.2 in) over just 2 days and a decrease in humidity to 59%. For more details on January weather in this region, visit Koch Bihar weather in January.
September and February present a striking contrast in weather conditions. In September, temperatures soar with a minimum of 23°C (73°F), averaging 29°C (84°F) and peaking at 37°C (98°F). This month also sees significant rainfall, with 527 mm (20.8 in) of precipitation over 27 days and high humidity levels at 93%. In contrast, February offers a much cooler atmosphere, with minimum temperatures dropping to 9°C (49°F), averaging at 19°C (67°F), and reaching a maximum of 31°C (87°F). February is characterized by minimal precipitation, with just 25 mm (1.0 in) over 3 days and a lower humidity of 61%. For more detailed insights into February weather, check out Koch Bihar weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a minimum of 23°C (73°F) to a scorching maximum of 37°C (98°F), with an average of 29°C (84°F). The month is characterized by high humidity at 93% and significant rainfall, totaling 527 mm (20.8 in) over 27 days. In stark contrast, March features milder temperatures, with a minimum of 12°C (54°F), an average of 24°C (75°F), and a maximum of 36°C (98°F). Precipitation is considerably lower in March, at just 71 mm (2.8 in) over 9 days, and humidity is much more comfortable at 38%. For more detailed insights into March weather, visit Koch Bihar weather in March.
In comparing the weather of September and April, September experiences significantly higher temperatures, with a minimum of 23°C (73°F) and an average of 29°C (84°F), compared to April's milder minimum of 16°C (61°F) and an average of 26°C (79°F). Both months share a maximum temperature of 37°C (98°F), but September is notably more humid with a humidity level of 93%, while April's humidity is a much drier 34%. Precipitation also varies greatly, as September receives 527 mm (20.8 in) over 27 days, making it a much wetter month than April, which has only 190 mm (7.5 in) of rain over 18 days. For further details, you can refer to Koch Bihar weather in April.
In comparing the weather of September and May, September tends to be warmer and more humid. With average temperatures reaching 29°C (84°F) and maximums of 37°C (98°F), it remains consistently hot, whereas May has slightly lower averages of 27°C (80°F) and maximums of 36°C (97°F). Rainfall is more substantial in September, totaling 527 mm (20.8 in) over 27 days, compared to May's 470 mm (18.5 in) over 28 days. Additionally, while September's humidity averages a high 93%, May enjoys a much drier atmosphere at 60%. For a closer look at May weather conditions, you can check Koch Bihar weather in May.
Both September and June share similar warm temperatures, with average highs around 29°C (84°F) and maximums reaching up to 37°C (98°F in September and 99°F in June). However, September experiences slightly higher humidity at 93% compared to June's 83%, making it feel a bit more oppressive. Additionally, September sees significant rainfall with 527 mm (20.8 in) over 27 days, while June has 540 mm (21.3 in) of precipitation across 29 days. For more detailed information, you can check Koch Bihar weather in June.
In comparing the weather in September and July, both months experience high average temperatures around 29°C (84°F), although July typically has slightly higher maximum temperatures, reaching up to 38°C (101°F). September sees a decrease in maximum temperatures to 37°C (98°F) while maintaining a similar minimum of 23°C (73°F). However, September is characterized by significantly less precipitation, receiving 527 mm (20.8 in) over 27 days compared to July's 704 mm (27.7 in) across 30 days, indicating that July is typically wetter. Despite similar humidity levels of 93%, the overall weather experience differs due to the increased rainfall in July. For a closer look at July's weather specifics, you can explore Koch Bihar weather in July.
In comparing the weather between August and September, both months experience high temperatures, with September showcasing a minimum of 23°C (73°F), an average of 29°C (84°F), and a maximum of 37°C (98°F). In contrast, August has slightly warmer temperatures, with a minimum of 25°C (78°F), an average of 29°C (85°F), and a maximum reaching 38°C (100°F). While the humidity remains consistent at 93% for both months, September sees a notable decrease in total precipitation to 527 mm (20.8 in) over 27 days, compared to August’s 618 mm (24.3 in) over 30 days. For a deeper insight into the weather conditions in August, you can explore Koch Bihar weather in August.
In September, the weather is characterized by high temperatures, with a minimum of 23°C (73°F), an average of 29°C (84°F), and a maximum soaring to 37°C (98°F). This month sees substantial rainfall, totaling 527 mm (20.8 in) over 27 days, accompanied by high humidity levels of 93%. In contrast, October experiences a slight cooling, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 36°C (97°F), and an average of 27°C (81°F). Precipitation decreases significantly to 321 mm (12.6 in) over 16 days, and humidity also drops to 88%. For more details on the October weather, visit Koch Bihar weather in October.
September and November present contrasting weather experiences. In September, temperatures are significantly warmer, ranging from a minimum of 23°C (73°F) to a scorching maximum of 37°C (98°F), with an average of 29°C (84°F). The month is also characterized by high humidity at 93% and substantial rainfall, totaling 527 mm (20.8 in) over 27 days, creating a hot and damp atmosphere. In stark contrast, November sees much cooler temperatures, with a minimum of 13°C (55°F) and a maximum of 33°C (92°F), averaging 22°C (73°F). The precipitation drastically drops to just 7 mm (0.3 in) over only 1 day, and humidity decreases to 80%, leading to a much drier and mild environment. For more detailed information, you can check the Koch Bihar weather in November.
The weather in September contrasts sharply with that of December. In September, temperatures range from a minimum of 23°C (73°F) to a maximum of 37°C (98°F), coupled with high humidity at 93% and considerable precipitation of 527 mm (20.8 inches) over 27 days. In stark contrast, December sees much cooler temperatures, with a minimum of 9°C (48°F) and a comfortable average of 18°C (65°F), peaking at 30°C (86°F). Additionally, December is remarkably dry, with only 5 mm (0.2 inches) of precipitation and no rainy days, alongside a lower humidity of 75%. For more details, check out the Koch Bihar weather in December.
As September unfolds in Koch Bihar, the weather offers a unique transition from the sweltering summer to a more temperate climate. With higher humidity levels peaking at 93%, the days are drenched in moisture, prompting a significant increase in rainfall compared to previous months. The average temperature settles around a comfortable 29°C (84°F), providing a welcome break from the extreme heats experienced earlier in the summer. However, the persistent rain—over 27 days with a total precipitation of roughly 527 mm (20.8 in)—creates a vibrant and lush atmosphere, making September distinctly different from the dry, sweltering conditions of the preceding months. To explore more about the climate patterns in this region, you can visit Koch Bihar Climate.