Last updated: October 30, 2025
September in Dehra Dun showcases a warm and humid climate, with maximum temperatures reaching 33°C (91°F) and an average of 26°C (79°F). The month brings considerable rainfall, totaling 242 mm (9.5 in) over approximately 23 days, leading to a high humidity level of 83%. As the monsoon season transitions, the lush greenery thrives, making this a vibrant time for nature and a refreshing experience for residents and visitors alike.
As September rolls into Dehra Dun, the temperatures begin to shift, offering a delightful transition from the summer heat. With minimums hovering around 18°C (65°F) and maximums peaking at 33°C (91°F), the month presents a comfortable average of 26°C (79°F). This is a noticeable drop from the sweltering highs of August, where temperatures often soared above 34°C (93°F). The month’s warmth is complemented by a refreshing breeze, making it an ideal time for outdoor activities and exploring the lush landscapes that the region has to offer. As the city gradually prepares for the cooler months ahead, September stands out as an inviting blend of summer's remnants and autumn's promise.
In September, Dehra Dun experiences a significant drop in precipitation compared to the hefty rains of July and August, accumulating 242 mm (9.5 in) of rainfall over 23 days. This month marks a transition from the torrential monsoon season, where the region is drenched in nearly 385 mm (15.2 in) in August, signaling the gradual withdrawal of rains. Although September continues to see frequent showers, the intensity and volume are noticeably lighter, contributing to a more balanced and refreshing climate. This shift not only aids in alleviating excess moisture but also sets the stage for the drier months ahead, making September a pivotal point in Dehra Dun's meteorological calendar.
In Dehra Dun, India, September marks a transition into a more humid climate, with levels averaging around 83%. Following the peak of August's 89% humidity, there is a slight decline but still a noticeable stickiness in the air. This month typically heralds the end of the monsoon season, as the humidity begins to gradually decrease, mirroring the overall trend observed from summer into autumn. While July and August maintain high humidity levels due to monsoonal rains, the subsequent months often see a shift, with October's humidity dropping to 76%. This pattern reflects a gradual easing from the intense moisture of summer towards the drier months ahead, although the lingering humidity in September keeps the atmosphere rich and vibrant.
As September rolls in, Dehra Dun experiences a very high UV Index of 10, marking a slight decline from the peak months of summer. This month reflects a transition, as the exposure category remains intense, necessitating caution with a burn time of just 15 minutes. Following the extreme levels observed in July and August, the drop in UV Index signals a welcome relief, though sun safety remains paramount. As the monsoon recedes, residents should be mindful of the still elevated UV exposure, especially when enjoying outdoor activities. For more insights on solar intensity throughout the year, check the Dehra Dun UV Index.
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As September rolls into Dehra Dun, the golden glow of sunshine remains a prominent feature, with the city basking in an impressive 314 hours of sunlight this month. This marks a slight decline from the preceding peak in May, where sunshine reached a yearly high of 372 hours, but it continues a strong trend of bright days following the wetter monsoon months. With the warmth of September sun, locals enjoy a refreshing transition into autumn, where the daylight hours gradually start to decrease. This month showcases a consistent pattern, still holding on to the generous light that characterizes the summer, bridging beautifully into the cooler October days ahead, expected to offer 326 hours of sunlight. The enduring presence of sunshine not only lifts spirits but also enhances the vibrant landscape of Dehra Dun, making it a delightful time for outdoor activities in this picturesque region of India.
In Dehra Dun, India, the likelihood of sunny weather in September takes a notable dip, with a mere 39% chance of sunshine. This trend is part of a broader pattern where the summer months, particularly July and August, experience significantly reduced sunlight due to the monsoon season. Following this gloomy stretch, September's relatively low sunshine probability contrasts sharply with the much brighter October, which boasts an impressive 82% chance of clear skies. As the year progresses from the rainy months into autumn, Dehra Dun transitions back into sunnier and more vibrant weather, making September a transitional period that hints at the brighter days to come.
As September unfolds in Dehra Dun, India, daylight begins to wane, offering approximately 12 hours of sunlight—a gentle transition from the sun-kissed days of summer. After peaking at 14 hours in June, the daylight duration gradually recedes, reflecting the shift towards autumn. This month marks a harmonious midpoint between the extended sunlit hours of summer and the shorter days ahead in October, which offers just 11 hours. The trend showcases a rhythmic cycle of increased and decreased daylight throughout the year, highlighting nature's predictable ebb and flow as seasons change.
As September arrives in Dehra Dun, the winds settle into a gentle rhythm, reflecting a summer that has begun to wane. With an average wind speed of 1.2 m/s (3 mph), this month witnesses a slight decrease compared to the warmer months of April and March, which boast breezier days at 2.5 m/s (6 mph) and 2.1 m/s (5 mph), respectively. The light winds of September, akin to a soft whisper, create a tranquil atmosphere, perfectly suited for leisurely strolls through the city's picturesque landscapes. In contrast, the wind speeds in the months preceding September are notably higher, suggesting a gradual transition towards the calm and cooler days of autumn. As the year progresses towards October, the winds remain soft but may start to pick up again, reminding us that change is always just a gentle gust away.
Weather in Dehra Dun varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Dehra Dun, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January exhibit stark contrasts in weather conditions. September is characterized by warm temperatures, with a minimum of 18°C (65°F) and an average of 26°C (79°F), peaking at 33°C (91°F). This month also sees considerable rainfall, with 242 mm (9.5 in) spread over 23 days and high humidity at 83%. In contrast, January experiences a much cooler climate, with temperatures ranging from a minimum of 2°C (37°F) to an average of 11°C (52°F), and a maximum of 23°C (74°F). Precipitation is significantly lower during this month, totaling only 50 mm (2.0 in) over just 5 days, and the humidity is notably lower at 76%. For more detailed information about January weather, you can check Dehra Dun weather in January.
September and February present stark contrasts in weather. In September, temperatures range significantly, with a minimum of 18°C (65°F) and a high of 33°C (91°F), contributing to an average of 26°C (79°F). This month is characterized by high humidity at 83% and substantial rainfall, with 242 mm (9.5 in) of precipitation occurring over 23 days. In contrast, February experiences much cooler temperatures, with a minimum of 2°C (37°F) and an average of 14°C (58°F), peaking at 29°C (85°F). February sees significantly less rainfall, only 45 mm (1.8 in) over 5 days, and slightly lower humidity at 78%. To explore more about February weather, visit Dehra Dun weather in February.
In September, the weather is characterized by warm temperatures, with a minimum of 18°C (65°F) and an average of 26°C (79°F), reaching highs of 33°C (91°F). However, this month also experiences significant rainfall, with 242 mm (9.5 in) over 23 days, leading to high humidity levels of 83%. In contrast, March offers a noticeably cooler atmosphere, with temperatures ranging from a minimum of 5°C (41°F) to an average of 19°C (67°F) and peaking at 35°C (95°F). Precipitation is much lower in March, totaling only 38 mm (1.5 in) across 6 days, and humidity is slightly reduced at 76%. For more detailed insights, check out Dehra Dun weather in March.
When comparing the weather in September and April, notable differences emerge. September experiences a warmer average temperature of 26°C (79°F) with peak highs reaching 33°C (91°F), while April boasts a milder average of 24°C (76°F), with highs potentially soaring to 37°C (98°F). In terms of rainfall, September is significantly wetter, receiving 242 mm (9.5 in) across 23 days, whereas April sees only 37 mm (1.5 in) over just 7 days. Additionally, humidity levels are higher in September at 83%, compared to 67% in April, making the former both warmer and more humid. For more specific insights into April's weather, you can visit Dehra Dun weather in April.
When comparing the weather in September and May, we notice distinct differences in temperature and precipitation patterns. September temperatures range from a minimum of 18°C (65°F) to a maximum of 33°C (91°F), with an average of 26°C (79°F) and high humidity at 83%. This month is characterized by significant rainfall, with about 242 mm (9.5 in) of precipitation over 23 days. In contrast, May presents slightly warmer conditions, with temperatures ranging from a minimum of 16°C (61°F) to a scorching maximum of 39°C (103°F), and an average of 27°C (81°F). May experiences much lower precipitation of only 39 mm (1.5 in) over 10 days and a lower humidity level of 58%. For a more detailed look at May weather, visit Dehra Dun weather in May.
September and June present contrasting weather patterns. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 33°C (91°F), with an average of 26°C (79°F). This month sees significant rainfall, with 242 mm (9.5 in) of precipitation spread over 23 days, resulting in higher humidity levels at 83%. In contrast, June features slightly higher temperatures, with a minimum of 19°C (66°F) and a maximum of 40°C (103°F), averaging 28°C (83°F). Precipitation is significantly lower, totaling 75 mm (3.0 in) over just 15 days and accompanied by a more moderate humidity of 60%. For a closer look at June weather in Dehra Dun, you can visit Dehra Dun weather in June.
September generally experiences milder temperatures compared to July, with average highs reaching 33°C (91°F) as opposed to July's hotter maximum of 37°C (99°F). Despite having lower maximum temperatures, September is characterized by higher humidity at 83% and more consistent rainfall, averaging 242 mm over 23 days, compared to July's 374 mm spread over 28 days. This results in a more humid feel during September, making it a bit stickier despite the warm days. Overall, July is hotter and wetter, while September offers slightly cooler temperatures but higher humidity and rainfall frequency. For more details, check Dehra Dun weather in July.
In comparing the weather of September and August, September experiences slightly milder temperatures, with a minimum of 18°C (65°F) and a maximum of 33°C (91°F), while August is warmer, especially with a minimum of 22°C (72°F) and a maximum of 34°C (93°F). However, September sees significantly higher precipitation levels, with total rainfall of 242 mm (9.5 in) over 23 days, compared to August's 385 mm (15.2 in) over 30 days. Humidity is also somewhat lower in September at 83%, compared to August's higher 89%. For more detailed insights, you can check Dehra Dun weather in August.
September and October showcase a noticeable shift in weather patterns. In September, temperatures are more elevated, with a minimum of 18°C (65°F) and an average high of 33°C (91°F), but the month is marked by significant rainfall, totaling 242 mm (9.5 in) over 23 days and high humidity at 83%. In contrast, October experiences cooler temperatures, with a minimum of 10°C (51°F) and an average high of 32°C (90°F). Precipitation decreases substantially to just 20 mm (0.8 in) over 3 days, and humidity drops to 76%, making October a drier month overall. For more details, you can check Dehra Dun weather in October.
In comparing the weather between September and November, there's a noticeable contrast in temperature and humidity levels. September typically experiences warmer conditions with minimum temperatures around 18°C (65°F) and average highs reaching 33°C (91°F), coupled with high humidity levels at 83%. This month is quite wet, with precipitation occurring on 23 days, totaling 242 mm (9.5 in). In stark contrast, November brings cooler temperatures, with minimums dropping to 6°C (43°F) and average highs around 28°C (83°F). The humidity decreases significantly to 63%, and the month is much drier, receiving only 9 mm (0.4 in) of rain over just 2 days. For more specific details, you can check Dehra Dun weather in November.
In September, the weather is characterized by warm temperatures, with a minimum of 18°C (65°F), an average of 26°C (79°F), and a maximum reaching 33°C (91°F). This month also sees significant precipitation, totaling 242 mm (9.5 in) over 23 days, contributing to high humidity levels at 83%. In stark contrast, December offers a cooler climate with temperatures ranging from a chilly 1°C (34°F) at night to a mild maximum of 24°C (76°F), averaging 12°C (54°F). Precipitation drops considerably to just 25 mm (1.0 in) across only 2 days, and humidity levels decrease to 62%. For more detailed insights, check Dehra Dun weather in December.
As the monsoon begins to wane, September in Dehra Dun presents a unique blend of warm temperatures and significant rainfall, setting it apart from other months. With average highs reaching 26°C (79°F) and humidity soaring to 83%, the air carries a palpable weight, contrasting sharply with the cooler, drier conditions that follow later in the year. The city experiences nearly 23 days of precipitation, resulting in vibrant greenery and a refreshing atmosphere. This transitional period makes September an exciting yet humid time to explore Dehra Dun. To delve deeper into the region's climate nuances, check out the full details here: Dehra Dun Climate.