Last updated: August 21, 2025
Idukki, India, experiences a dynamic September, characterized by a maximum temperature of 29°C (85°F) and a soothing average of 23°C (74°F). The month brings a refreshing minimum temperature of 18°C (65°F), creating a pleasant atmosphere amidst the lush greenery. Rainfall is significant, with an impressive 353 mm (13.9 in) recorded over 27 days, contributing to the area's vibrant ecosystems. The high humidity level of 85% enhances the tropical feel, making September a month of abundant natural beauty and fertile landscapes in this breathtaking region.
As September arrives in Idukki, India, the temperatures reflect a gentle transition from the monsoon season. With a minimum of 18°C (65°F) and a maximum reaching 29°C (85°F), the weather remains mild and comfortable. The average temperature holds steady at 23°C (74°F), echoing the patterns established in the preceding months. While the maximum temperature dips slightly from the peak summer highs, the consistent warmth and humidity from earlier rainfalls still linger in the air, creating a lush and vibrant atmosphere. This month marks a period of rejuvenation in nature, as Idukki prepares for the drier season ahead and invites both residents and visitors to bask in its serene climate.
September in Idukki, India, marks a significant transition in the monsoon season, with precipitation totaling 353 mm (13.9 in) over approximately 27 days of rainfall. This month continues the trend of heavy showers characteristic of the region, following August's peak of 502 mm (19.8 in). The rainfall in September, while slightly reduced from the previous month, remains substantial and essential for replenishing water resources and supporting local agriculture. Interestingly, the rainfall pattern in Idukki illustrates an overall crescendo during the monsoon months, with averages steadily increasing from January's modest 63 mm (2.5 in) to the late summer's highs. These trends highlight Idukki's vital connection to seasonal rains, providing a lush landscape and sustaining the ecosystem throughout this period.
In September, Idukki experiences a slight dip in humidity, measuring at 85%. This marks a transition from the peak humidity levels of the monsoon months, specifically August, which boasts a high of 87%. As the region shifts towards the drier months of October and November, this reduction in humidity signifies the gradual retreat of the monsoon season. Notably, the overall trend from June to September reveals a steady climb in humidity, reaching a maximum of 86% in July before beginning to taper off. This consistent atmospheric moisture, particularly during the mid-summer months, illustrates Idukki's lush and vibrant climate, shaping its rich biodiversity and captivating landscapes.
As September rolls into Idukki, the UV Index remains relentlessly high at 14, categorizing it as extreme and demanding cautious sun exposure. This trend mirrors the previous months of August and May, where similar peaks were recorded, indicating that the region continues to experience intense solar radiation during this time of year. With a burn time of just 10 minutes, residents and visitors alike should prioritize sun safety measures. Throughout the year, Idukki demonstrates a consistent pattern of high UV levels that require vigilance, especially from January through September. Embrace the beauty of Idukki, but stay informed and protected; for more details, check out the Idukki UV Index.
UV Risk Categories
As September rolls into Idukki, the region basks in 289 hours of glorious sunshine, marking a gentle transition from the vibrant summer months. While the sun's embrace in September is slightly less intense than the peak of 336 hours seen in March, it still offers a delightful warmth. This time of year feels like a soft exhale after the humid rains of July and August, where sunshine dipped to 288 and 267 hours, respectively. The steady decline in sunlight hours from early spring through the monsoon hints at nature's rhythm, yet September maintains a sweet balance, with just enough light to invigorate the lush landscapes. As October approaches, Idukki will enjoy a brief dip in daylight to 275 hours, but September stands out as a perfect moment of moderate brightness, inviting both relaxation and adventure among its picturesque hills.
In Idukki, India, the likelihood of sunny weather takes a notable dip in September, where it stands at just 9%. This marks a continuation of the region's trend towards cloudier skies that begins in the summer months, with July and August showcasing even slimmer chances of sunshine. Following a peak in February at 60%, the sunshine probability steadily declines, emphasizing the transition into the monsoon season. As September unfolds, the landscape is typically laden with moisture and overcast skies, offering a stark contrast to the brighter months earlier in the year. Thus, while Idukki offers a beautiful retreat year-round, visitors should prepare for a higher chance of rain rather than radiant sunshine in September.
In Idukki, India, the month of September continues the trend of consistent daylight, offering a generous 12 hours of sunshine each day. This pattern reflects the region's stable daylight duration, which peaks at 12 hours from March to August before gently tapering to 11 hours in the cooler months of October through December. The persistence of twelve hours in September signifies the tail end of the monsoon season when rainy days give way to clearer skies, allowing residents and visitors to enjoy the rich natural beauty of the landscape under ample sunlight.
As September arrives in Idukki, India, the gentle whispers of the wind begin to calm, settling at an average speed of 1.9 m/s (4 mph). Following the peak breezes of July, which reached 2.6 m/s (6 mph), and the slightly firm gusts of August at 2.0 m/s (5 mph), September showcases a transition into more tranquil conditions. This subtle decrease not only reflects the shifting seasons but also suggests a moment of pause before the winds lower once again in October. Overall, the patterns illustrate a rise in wind speed through the mid-year months, followed by a gentle tapering off as the landscape prepares for the quieter days ahead.
Weather in Idukki varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Idukki, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present notably different weather patterns. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 29°C (85°F), while the average remains around 23°C (74°F). However, this month is also characterized by high humidity at 85% and significant rainfall, totaling 353 mm (13.9 in) over an average of 27 days. Conversely, January experiences slightly cooler temperatures, with a minimum of 15°C (60°F) and a maximum of 33°C (91°F), but still maintains the same average of 23°C (74°F). The month sees much less precipitation, with only 63 mm (2.5 in) over just 6 days, and lower humidity at 70%. This makes January a much drier and less humid month compared to September. For more specific details, you can check Idukki weather in January.
September and February present contrasting weather patterns. September boasts warm temperatures, with averages around 23°C (74°F) and maximums reaching up to 29°C (85°F). However, it is also characterized by high humidity at 85% and significant rainfall, totaling 353 mm over 27 days. In stark contrast, February enjoys slightly cooler average temperatures of 24°C (76°F) and can soar to highs of 34°C (94°F). Meanwhile, it experiences much lower precipitation, with only 26 mm over just 5 days and a drop in humidity to 64%. For detailed insights, you can check out Idukki weather in February.
In comparing the weather patterns of September and March, it's evident that both months offer distinct climatic conditions. September enjoys milder temperatures with a minimum of 18°C (65°F) and an average of 23°C (74°F), reaching a maximum of 29°C (85°F). However, it is also marked by high precipitation, with 353 mm (13.9 in) of rain over 27 days and a humidity level of 85%. In contrast, March experiences warmer conditions, with a minimum temperature of 19°C (66°F) and an average of 26°C (78°F), peaking at a scorching 36°C (96°F). Additionally, March sees significantly reduced rainfall at 105 mm (4.1 in) across 13 days and lower humidity at 66%. For a more detailed look at March weather, you can visit Idukki weather in March.
September and April present distinct weather patterns, with April generally being warmer and drier. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 29°C (85°F), accompanied by significant rainfall totaling 353 mm (13.9 in) over 27 days and high humidity at 85%. Conversely, April boasts higher temperatures, with a minimum of 19°C (67°F) and a maximum soaring to 36°C (97°F), while experiencing much less precipitation at 175 mm (6.9 in) across 26 days, alongside a lower humidity level of 71%. For more detailed insights into April weather, you can refer to Idukki weather in April.
When comparing the weather in September and May, several key differences emerge. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 29°C (85°F), with an average of 23°C (74°F). The month experiences significant rainfall, totaling 353 mm (13.9 in) across 27 days, contributing to a high humidity level of 85%. In contrast, May sees slightly higher temperatures, with a minimum of 19°C (67°F) and a maximum of 33°C (92°F), averaging 24°C (76°F). Although May has slightly less precipitation at 341 mm (13.4 in), it occurs over 29 days, resulting in lower humidity at 77%. For more detailed information about the weather in May, check Idukki weather in May.
Comparing the weather in September and June, we notice several similarities and a few key differences. Both months have an average temperature of 23°C (74°F), with maximum temperatures reaching 29°C (85°F) in September and 29°C (84°F) in June. However, September's minimum temperature is slightly lower at 18°C (65°F), compared to June's 19°C (67°F).
In terms of precipitation, June is wetter, receiving 430 mm (16.9 in) of rain over 29 days, while September sees 353 mm (13.9 in) over 27 days. Humidity levels are also comparable, with September at 85% and June slightly lower at 83%.
For more information on June weather specifics, check this link: Idukki weather in June.
September and July share similar temperature ranges, with both months experiencing average highs of 29°C (85°F) and lows around 18–19°C (65–67°F). However, July is slightly warmer, showcasing a minimum temperature of 19°C (67°F) compared to September's 18°C (65°F). In terms of rainfall, July sees more precipitation with 390 mm (15.3 in) over 29 days, while September receives 353 mm (13.9 in) over 27 days, indicating a marginally drier month. Humidity remains high in both months, with September at 85% and July at 86%, making for a consistently muggy atmosphere. For a more detailed look at July weather specifics, you can refer to Idukki weather in July.
The weather in September is slightly cooler than in August, with minimum temperatures of 18°C (65°F) compared to August's 19°C (67°F). Both months have similar average temperatures around 23°C (73°F), but September enjoys a maximum temperature of 29°C (85°F), slightly warmer than August's 28°C (83°F). However, September experiences significantly less rainfall, with 353 mm (13.9 in) over 27 days, while August sees more precipitation at 502 mm (19.8 in) across 29 days. Humidity levels are also marginally lower in September at 85% compared to 87% in August. For more detailed information on the weather patterns, you can check Idukki weather in August.
In September, the weather features a minimum temperature of 18°C (65°F) and an average of 23°C (74°F), peaking at a maximum of 29°C (85°F). The month experiences significant rainfall, with 353 mm (13.9 in) of precipitation over 27 days and high humidity at 85%. In contrast, October brings slightly warmer conditions, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 30°C (87°F) while maintaining the same average of 23°C (74°F). However, October sees a slight increase in precipitation to 404 mm (15.9 in), also over 27 days, with the humidity dropping slightly to 84%. For more detailed information, you can visit Idukki weather in October.
September and November in Idukki present distinct weather patterns that highlight the transition of seasons. In September, temperatures range from a minimum of 18°C (65°F) to a maximum of 29°C (85°F), with an average of 23°C (74°F). The month experiences heavy rainfall, with a staggering 353 mm (13.9 in) spread over 27 days, contributing to a higher humidity level of 85%.
In contrast, November features slightly warmer temperatures, with a minimum of 18°C (64°F) and a maximum of 30°C (87°F), leading to an average of 24°C (75°F). Precipitation decreases significantly to 249 mm (9.8 in) across 23 days and humidity levels drop slightly to 83%. This comparison reveals that while both months maintain similar temperature ranges, November tends to be drier and less humid. For more detailed insights on November weather conditions, visit Idukki weather in November.
In September, the weather tends to be quite humid with average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 29°C (85°F). The month is also marked by significant rainfall, receiving 353 mm (13.9 in) over 27 days, contributing to a high humidity level of 85%. In contrast, December experiences slightly cooler temperatures, with a minimum of 17°C (62°F) and a maximum of 30°C (86°F), while maintaining a similar average of 23°C (74°F). Notably, December sees significantly less rainfall at 117 mm (4.6 in) over just 14 days, lowering the humidity to 80%. For a more detailed look at weather patterns in December, check out Idukki weather in December.
As September unfolds in Idukki, the weather transforms into a breezy sanctuary amidst a lush, vibrant landscape. With an average temperature hovering around a comfortable 23°C, this month's charm lies in its unmistakable shift towards the rainy season. Frequent downpours, totaling about 353 mm of rainfall over 27 days, blanket the region, elevating humidity levels to a steamy 85%. This stark contrast to the drier preceding months brings a fresh vitality to the flora and fauna, making it a captivating time for nature enthusiasts. For a more detailed overview, explore the Idukki Climate.