Last updated: August 21, 2025
Mettupalayam experiences a dynamic September, characterized by a maximum temperature reaching 32°C (91°F), with an average of 25°C (78°F), and a low of 21°C (70°F). This month is notably marked by heavy rainfall, accumulating around 233 mm (9.2 in), spread over approximately 25 days, making it one of the wettest periods of the year. The humidity levels soar to an average of 87%, creating a lush and vibrant atmosphere. For those navigating the weather in this charming South Indian town, expect a blend of warmth and moisture, typical of the monsoon season.
In September, Mettupalayam experiences a gentle transition as temperatures begin to cool slightly from the sweltering summer months. With minimums averaging around 21°C (70°F) and maximums reaching up to 32°C (91°F), the weather remains comfortably warm, ideal for outdoor activities. The average temperature hovers at 25°C (78°F), providing a pleasant relief from the heat of the preceding months. This time of year signifies a shift toward the rainy season, where the lush landscapes come alive, making it a picturesque backdrop against the mellow temperatures. As September unfolds, Mettupalayam presents a delightful blend of warmth and freshness, inviting both locals and travelers to enjoy its serene charm.
In September, Mettupalayam experiences a notable shift in precipitation patterns, receiving 233 mm (9.2 in) of rainfall over 25 days. This is a substantial decline from the peak monsoon months of July and August, yet it remains significant, marking the third-highest rainfall of the year. This month acts as a bridge, still capturing the essence of the monsoon season while hinting at the gradual transition into drier months. Following the torrential downpours of the summer, September’s rains contribute to lush landscapes, as the region gears up for the onset of October, where slightly increased precipitation is expected. In this rhythm of rainfall, Mettupalayam illustrates how its climate is deeply influenced by the monsoon cycle, with September serving as a pivotal point in this water-rich narrative.
In Mettupalayam, India, September continues the trend of high humidity established in the preceding months. With humidity levels reaching 87%, the atmosphere remains thick and muggy, mirroring the conditions of July and August. This peak in humidity corresponds with the monsoon season, where the lush landscape thrives but also poses challenges for comfort and outdoor activities. Following this humid month, the levels are projected to slightly decrease in October, dropping to 84%, offering a brief respite before the humidity starts to rise again in the closing months of the year. Overall, September's consistency in high humidity emphasizes the dramatic climatic fluctuations typical of the region, making it a notable month for residents and visitors alike.
In September, Mettupalayam experiences a UV Index of 14, categorizing it as extreme with a quick burn time of just 10 minutes. This marks a continuation of a trend seen over the preceding months, where the UV Index remained consistently high at 13 or 14 from March to August. With summer's lingering intensity, residents and visitors alike should be vigilant about sun protection. As the year progresses into October, a slight dip to 12 is expected, but the tendency for extreme UV radiation remains strong. For more insights into the UV levels throughout the year, check out the detailed information here: Mettupalayam UV Index.
UV Risk Categories
September in Mettupalayam, India, brings a delightful shift in sunshine, with 289 hours of bright, sunny days that perfectly cap off the monsoon season. Although this figure is slightly lower than the peak sunshine recorded in March (339 hours), it is consistent with the cloudier months that precede it, like the previous July (290 hours) and August (276 hours). Interestingly, September maintains a harmonious balance, providing warmth and light without the intensity of the peak summer months. As the year unfolds, visitors can appreciate a gradual increase in daylight hours leading into October, which also records 289 hours of sunshine, weaving a tapestry of bright days that transition seamlessly into the cooler months ahead.
In Mettupalayam, India, September brings a notable decline in sunny weather, with the chance of clear skies plummeting to just 15%. This marks a stark contrast from the warmer months, where the chances soar—73% in March and a relatively high 64% in February. As the monsoon season takes hold, the sun becomes a rarer sight, following a trend of diminishing sunlight that begins in late spring and continues through the summer. After September, the likelihood of sunshine remains low, dropping further to 11% in October and November, before a slight bounce back to 61% in December. Thus, if you’re hoping for sunny days, you might want to plan your visit to Mettupalayam outside of the monsoon season.
In Mettupalayam, India, the month of September continues a trend of consistent daylight, with the sun gracing the skies for 12 hours each day. This stable pattern emerges after the longer days of summer in April through August, which also boasted 12 hours of daylight. As the year transitions into October, residents can anticipate a slight decrease in daylight hours, dipping back to 11 hours. Overall, September's twilight hours echo the enduring warmth of summer, illuminating a harmonious rhythm of nature as it gently shifts towards the cooler months ahead.
In September, the winds in Mettupalayam, India blow steadily at an average speed of 1.9 m/s (4 mph), mirroring the breezy conditions of the preceding months. This consistency is a hallmark of late summer, as the wind begins to gently stir the transition from the vibrant heat of summer to the milder embrace of autumn. Interestingly, the wind speed in September holds steady with the previous two months, reflecting a period of relative calm before a gradual decrease towards October. This subtle shift in wind dynamics not only marks the seasonal change but also sets the stage for the cooler months ahead, when average speeds dip further, emphasizing the tranquil yet transformative nature of September in this picturesque region.
Weather in Mettupalayam varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Mettupalayam, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather conditions. In September, temperatures range from a minimum of 21°C (70°F) to a maximum of 32°C (91°F), with an average of 25°C (78°F). This month experiences considerable rainfall, with 233 mm (9.2 in) spread over 25 days, and humidity peaks at a high 87%. In contrast, January enjoys milder temperatures, with a minimum of 16°C (62°F), an average of 23°C (74°F), and a maximum of 31°C (89°F). The precipitation is significantly lower, at just 35 mm (1.4 in) over 5 days, and humidity drops to a more comfortable 64%. For more specifics on January weather, you can check out Mettupalayam weather in January.
September and February showcase contrasting weather patterns, highlighting the shift from late summer to early winter. In September, temperatures range from a minimum of 21°C (70°F) to a maximum of 32°C (91°F), with an average of 25°C (78°F). This month also sees significant rainfall, with 233 mm (9.2 in) of precipitation occurring over 25 days and a high humidity level of 87%. In contrast, February presents milder conditions, with temperatures dipping slightly to a minimum of 16°C (62°F) and reaching up to 34°C (93°F), averaging around 24°C (76°F). Remarkably, February experiences only 9 mm (0.4 in) of precipitation over just a single day, accompanied by a more comfortable humidity level of 57%. For a closer look at February weather, you can explore Mettupalayam weather in February.
In comparing the weather between September and March, there are notable differences in temperature and precipitation. September experiences a humid climate with an average temperature of 25°C (78°F), peaking at a high of 32°C (91°F). It is also a significantly wetter month, receiving 233 mm (9.2 in) of rainfall over approximately 25 days, resulting in high humidity levels of 87%. In contrast, March has a warmer average temperature of 27°C (81°F) and can soar to a maximum of 36°C (97°F), but it is much drier, with only 15 mm (0.6 in) of precipitation over just 3 days and lower humidity at 57%. For more details on March weather, check out Mettupalayam weather in March.
In comparing the weather between September and April, we see notable differences in temperature and precipitation patterns. September typically experiences cooler temperatures, with averages around 25°C (78°F) and a maximum of 32°C (91°F), but it also brings significant rainfall, recording 233 mm (9.2 in) over approximately 25 days, coupled with high humidity levels of 87%. In contrast, April showcases warmer conditions, with an average temperature of 29°C (84°F) and maximum temperatures reaching as high as 37°C (99°F). Furthermore, April is relatively dry, receiving just 19 mm (0.8 in) of rain across 4 days, and features lower humidity at 68%. For a more detailed look at April's weather, you can refer to Mettupalayam weather in April.
In comparing the weather of September and May, September tends to be slightly cooler, with average temperatures ranging from a minimum of 21°C (70°F) to a maximum of 32°C (91°F). The month experiences significant rainfall, accumulating around 233 mm (9.2 in) over approximately 25 days, resulting in high humidity levels of 87%. In contrast, May is hotter, featuring higher average temperatures with a minimum of 21°C (70°F) and peaking at 38°C (100°F). Additionally, May sees much less rainfall, totaling about 67 mm (2.6 in) over just 12 days, leading to a lower humidity level of 81%. For more details on May's weather, you can visit Mettupalayam weather in May.
In comparing the weather between September and June, both months experience warm temperatures, but June tends to be slightly hotter overall. In June, the average temperature reaches 26°C (80°F), with maximums soaring up to 36°C (98°F), while September has an average temperature of 25°C (78°F) and a maximum of 32°C (91°F). However, September sees higher precipitation, with 233 mm (9.2 in) falling across 25 days compared to June's 196 mm (7.7 in) over 24 days. Both months have high humidity levels, with September at 87% and June at 84%. For more detailed information on June weather specifics, you can refer to Mettupalayam weather in June.
In comparing the weather between September and July, both months share similar minimum temperatures of around 21°C (70°F) and high humidity levels of 87%. However, July tends to be hotter overall, with an average temperature of 26°C (78°F) and maximums reaching up to 35°C (95°F). In contrast, September experiences slightly cooler temperatures, with an average of 25°C (78°F) and maximums of 32°C (91°F). Additionally, July sees more precipitation, accumulating 306 mm (12.1 in) over 27 days, compared to September's 233 mm (9.2 in) across 25 days. For more detailed information, you can check Mettupalayam weather in July.
In comparing the weather of September and August, both months experience similar temperature ranges, with minimums around 21°C (70°F), average temperatures at 25°C (78°F), and maximums reaching up to 32°C (91°F in September and 89°F in August). However, September is slightly drier, receiving 233 mm (9.2 in) of precipitation over 25 days, compared to August's heavier rainfall of 315 mm (12.4 in) over 27 days. Despite the drop in precipitation, humidity remains consistent at 87% for both months, contributing to the warm and muggy conditions typical of this region. For more details on August weather, visit Mettupalayam weather in August.
In September, the weather features a minimum temperature of 21°C (70°F) and an average of 25°C (78°F), with maximums reaching up to 32°C (91°F). This month also sees a significant amount of precipitation, totaling 233 mm (9.2 in) across 25 days, and humidity levels remain high at 87%. In contrast, October offers slightly cooler evenings with a minimum temperature of 19°C (67°F), while maintaining the same average and maximum temperatures as September. However, October experiences an increase in precipitation to 255 mm (10.0 in) over 23 days, accompanied by a slight drop in humidity to 84%. For more detailed insights, check out Mettupalayam weather in October.
September and November showcase distinctly different weather patterns. In September, temperatures range from a minimum of 21°C (70°F) to a maximum of 32°C (91°F), with an average of 25°C (78°F). The month is marked by significant rainfall, totaling 233 mm (9.2 in) over 25 days, accompanied by high humidity at 87%. In contrast, November maintains a similar average temperature of 25°C (77°F) but features slightly cooler minimum temperatures of 18°C (65°F) and a maximum of 32°C (90°F). Precipitation decreases significantly to 141 mm (5.5 in), spread across 18 days, with lower humidity levels at 82%. For more insights, you can check Mettupalayam weather in November.
In September, the weather tends to be quite warm and humid, with average temperatures around 25°C (78°F) and maximums reaching up to 32°C (91°F). The month also experiences significant rainfall, totaling 233 mm (9.2 in) over about 25 days, contributing to a high humidity level of 87%. In contrast, December offers a more temperate climate, with average temperatures dropping to 23°C (74°F) and maximums peaking at 30°C (87°F). Additionally, precipitation decreases dramatically to 78 mm (3.1 in) over just 10 days, and humidity lowers to 76%. For a detailed look at December weather in the region, you can visit Mettupalayam weather in December.
September in Mettupalayam marks a notable shift in climate dynamics, transitioning the atmosphere towards cooler temperatures and heightened precipitation. With maximum temperatures averaging around 32°C (91°F), the month introduces a refreshing dip from the sweltering summer heat, while average conditions settle around 25°C (78°F). The frequent rains, occurring on about 25 days, contribute to a noteworthy humidity level of 87%, enveloping the region in a lush greenery that sets it apart from the dryer preceding months. This blend of warmth and moisture creates an invigorating environment, perfect for outdoor exploration and enjoying the vibrant natural surroundings. For more detailed information, visit Mettupalayam Climate.