Last updated: August 21, 2025
Discover the charming September weather of Saint Thomas Mount, India, where temperatures fluctuate between a maximum of 34°C (93°F) and a minimum of 25°C (77°F), with an average hovering around 29°C (84°F). This month sees a considerable precipitation of 126 mm (5.0 in) over 19 days, contributing to the region's lush greenery. Humidity levels remain high at 81%, creating a tropical atmosphere that envelops visitors. Whether you're exploring the historic mount or simply enjoying the scenic views, September offers a unique blend of warmth and refreshing rain that defines this vibrant location.
In September, temperatures at Saint Thomas Mount, India begin to reflect the transition toward milder conditions as the monsoon winds down. With a minimum of 25°C (77°F) and an average reaching 29°C (84°F), it's a comfortable month for outdoor activities. The maximum temperature peaks at 34°C (93°F), bringing a slight decline from the sweltering summer months, yet still offering warmth typical of the region. This gradual cooling trend, following the sultry summer, makes September a welcoming time for visitors and locals alike, as the lush surroundings thrive with renewed life from the recent rains.
September marks a significant peak in precipitation for Saint Thomas Mount, India, with an impressive 126 mm (5.0 in) of rainfall over 19 days. This month follows a pattern established during the monsoon season, where rainfall steadily increases from June's 64 mm (2.5 in) to August's 125 mm (4.9 in). The precipitation not only reflects the arrival of the southwest monsoon but also sets the stage for even heavier rains in October, which averages 169 mm (6.7 in). Notably, September's rainfall is both abundant and consistent, mirroring the trend of increasing precipitation that characterizes the region in this time of year. As the month transitions into October, the rhythm of the rain illustrates the dynamic interplay between the seasons, contributing to the lush landscape that defines this part of India.
In September, Saint Thomas Mount experiences a humidity level of 81%, marking a slight dip from the peak of 83% seen in the preceding months of April and May. This month positions itself within a generally humid climate, as indicated by the consistent levels throughout the year, typically ranging from 76% to 83%. After the summer months, when humidity tends to escalate, September shares similar levels with July and June, hinting at the slow transition into the drier months ahead. This ongoing humidity reflects the region's tropical characteristics, maintaining a muggy atmosphere even as the monsoon season begins to wane, with October's forecast showing a promising decline to 79%.
As September rolls in, Saint Thomas Mount experiences a consistent UV Index of 13, categorizing it as extreme. This means that the risk of harm from unprotected sun exposure remains significant, with a burn time of just 10 minutes. This trend continues from August and reflects the region's overall high UV intensity during the peak months. Unlike the earlier months of the year, where the UV Index fluctuated, September maintains this elevated level, urging residents and visitors alike to take protective measures when outdoors. For more detailed information on UV levels throughout the year, visit Saint Thomas Mount UV Index.
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As the calendar turns to September in Saint Thomas Mount, India, the sun continues to grace the region with its warm embrace, delivering 293 hours of sunshine. While this marks a slight dip from the sunniest summer months, its brightness holds steady against previous peaks. The transition into autumn sees a decrease compared to the vibrant highs of May and March, which topped the charts with over 350 hours. Nevertheless, September shines brighter than the monsoon months of July and August, fostering a delightful climate that ushers in the change of season. This pattern underscores a steady rhythm of sunshine throughout the year, with September's golden rays encouraging outdoor exploration before the cooler months arrive.
In Saint Thomas Mount, India, September marks a notable shift in weather patterns, as the likelihood of sunny days drops to just 13%. This is a stark contrast to the sun-drenched days of February, where the chance of sunshine soars to 70%. As the monsoon season peaks, the skies tend to be overcast, leading to a dramatic plunge in sunny weather compared to the dry months preceding it. The transition from the consistently brighter months earlier in the year—like March and April, with chances of sun at 69% and 61% respectively—highlights September's role as a bridge into the rain-laden final quarter of the year. As the month progresses, residents and visitors alike may find themselves longing for the return of sunnier days, typically emerging in October, where the likelihood climbs again to 26%.
In Saint Thomas Mount, India, the daylight duration exhibits a clear and consistent pattern throughout the year. Starting from January and February, residents enjoy a steady 11 hours of daylight, which gradually extends to a peak of 12 hours from March through September. This consistent exposure to daylight during the warmer months fosters an inviting atmosphere for outdoor activities and exploration. As October rolls in, the daylight begins to taper off again to 11 hours, mirroring the earlier months, before settling into the winter’s shorter days. This rhythmic shift not only highlights the tropical climate's stability but also enhances the vibrant lifestyle of the region.
In September, the winds in Saint Thomas Mount, India, maintain a gentle pace, averaging 3.5 m/s (8 mph), similar to both its preceding and succeeding month, August and October. This steady wind speed reflects a trend observed since May, where wind speeds began to climb, peaking in June at 4.2 m/s (9 mph). Interestingly, the breeze tends to soften slightly as the year transitions into the cooler months, hinting at a dynamic seasonal shift. As September greets the region with its familiar breeziness, it invites both locals and visitors to enjoy the balmy atmosphere, evoking a sense of calm before the winds begin to wane in the autumn months.
Weather in Saint Thomas Mount varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Saint Thomas Mount, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January showcase contrasting weather patterns. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 34°C (93°F), with an average of 29°C (84°F). This month is characterized by high humidity at 81% and substantial rainfall, totaling 126 mm (5.0 in) spread over 19 days. In stark contrast, January offers a milder climate with temperatures dipping lower; the minimum is 20°C (68°F) and the maximum reaches 30°C (86°F), averaging 25°C (78°F). Additionally, January sees significantly less precipitation, with only 32 mm (1.3 in) occurring over just 5 days, and humidity remains moderate at 76%. For those interested in more details, see Saint Thomas Mount weather in January.
September weather is characterized by warmer temperatures, with a minimum of 25°C (77°F) and an average of 29°C (84°F), peaking at a maximum of 34°C (93°F). The month also sees significant rainfall, totaling 126 mm (5.0 in) over 19 days, coupled with high humidity at 81%. In contrast, February experiences milder conditions, with a minimum temperature of 20°C (68°F), an average of 26°C (79°F), and a maximum of 31°C (88°F). Precipitation is minimal in February, amounting to only 10 mm (0.4 in) over just 1 day, and humidity is slightly lower at 76%. For more details on February weather, you can check Saint Thomas Mount weather in February.
When comparing the weather in September and March, it is evident that both months exhibit warm temperatures and high humidity levels of 81%. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 34°C (93°F), with an average of 29°C (84°F). This month is characterized by significant rainfall, receiving about 126 mm (5.0 in) over 19 days. In contrast, March presents slightly lower temperatures, with a minimum of 22°C (72°F) and a maximum of 35°C (95°F), averaging 28°C (83°F). Additionally, March is much drier, registering only 6 mm (0.2 in) of precipitation over just 1 day. For a more detailed look at March weather, you can visit Saint Thomas Mount weather in March.
In comparing the weather between September and April, both months experience warm temperatures, but April tends to be slightly hotter overall. The average temperature in April reaches 30°C (86°F), compared to September's 29°C (84°F). While both months have a minimum temperature of around 25°C (77°F), April's maximum can climb as high as 35°C (96°F), surpassing September's 34°C (93°F). Precipitation also differs significantly: September sees a substantial 126 mm (5.0 in) of rain over 19 days, whereas April is much drier with only 8 mm (0.3 in) falling over just 1 day. Humidity levels are quite similar, hovering around 81% in September and 83% in April. For more details on April weather, visit Saint Thomas Mount weather in April.
When comparing the weather in September and May, September tends to be slightly cooler, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 34°C (93°F). In contrast, May sees higher temperatures, with averages reaching a minimum of 26°C (78°F) and maximums up to 38°C (100°F). Additionally, September experiences significantly more rainfall, with 126 mm (5.0 in) over 19 days, while May remains relatively dry with only 13 mm (0.5 in) across just 3 days. Humidity levels are similar, with September at 81% and May slightly higher at 83%. For more specific insights into May weather, you can refer to Saint Thomas Mount weather in May.
When comparing the weather in September and June, it's noticeable that both months maintain similar humidity levels at 81%. However, June tends to be hotter, with average temperatures reaching 31°C (88°F) and a maximum of 37°C (99°F), compared to September's average of 29°C (84°F) and max of 34°C (93°F). Additionally, June experiences less rainfall, measuring 64 mm (2.5 in) over 12 days, while September is wetter, receiving 126 mm (5.0 in) over 19 days. For more detailed insights into June weather, you can visit Saint Thomas Mount weather in June.
In comparing the weather between July and September, July tends to be slightly warmer, with average temperatures around 30°C (86°F) and maximums reaching up to 36°C (97°F). In contrast, September sees a slight decrease in average temperature to 29°C (84°F), though it still enjoys warm conditions with a maximum of 34°C (93°F). Both months experience significant humidity, hovering around 80% for July and 81% for September, creating a similar tropical atmosphere. However, September is characterized by a higher precipitation level, averaging 126 mm (5.0 in) over 19 days, compared to July's 107 mm (4.2 in) over 16 days. For a more detailed look into July’s weather, you can visit Saint Thomas Mount weather in July.
In comparing the weather of September and August, we see that both months exhibit similar average temperatures, with September slightly cooler at an average of 29°C (84°F) compared to August’s 29°C (85°F). The maximum temperatures in August reach up to 35°C (95°F), whereas September sees a maximum of 34°C (93°F), making it marginally less intense. Precipitation levels are nearly identical, with September recording 126 mm (5.0 in) and August 125 mm (4.9 in), both occurring over 19 days, contributing to the overall humidity of 81% in September and 82% in August. For more detailed information, you can refer to Saint Thomas Mount weather in August.
September and October showcase a slight shift in weather characteristics. In September, temperatures range from a minimum of 25°C (77°F) to a maximum of 34°C (93°F), with an average of 29°C (84°F). The month also sees considerable rainfall, totaling 126 mm (5.0 in) over 19 days and a humidity level of 81%. In contrast, October brings a marginally cooler average temperature of 28°C (83°F), with a minimum of 24°C (76°F) and a maximum reaching 33°C (93°F). Rainfall increases to 169 mm (6.7 in) spread across 21 days, while humidity decreases slightly to 79%. For more detailed insights into October's weather, you can check Saint Thomas Mount weather in October.
In September, the weather is characterized by higher temperatures, with average highs reaching 34°C (93°F) and a notable level of humidity at 81%. The month experiences considerable rainfall, totaling 126 mm (5.0 in) over 19 days. In contrast, November sees slightly cooler conditions, with average temperatures peaking at 32°C (90°F) and a decrease in humidity to 80%. However, November is significantly wetter, receiving 377 mm (14.9 in) of rain throughout 20 days. For more detailed information, you can explore Saint Thomas Mount weather in November.
In September, weather conditions are generally warmer and more humid, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 34°C (93°F) and an average of 29°C (84°F). The month also sees higher precipitation, averaging 126 mm (5.0 in) over 19 days, contributing to a humidity level of 81%.
In contrast, December offers a slight cooling trend, with temperatures ranging between a minimum of 22°C (71°F) and a maximum of 30°C (87°F), and an average of 26°C (79°F). Precipitation decreases to 109 mm (4.3 in) over just 10 days, leading to a slightly lower humidity of 78%.
For a more detailed look at December weather, please visit Saint Thomas Mount weather in December.
As September unfolds at Saint Thomas Mount, the weather takes on a distinctly moist and warm character, setting it apart from the drier months that precede it. With temperatures reaching a maximum of 34°C and an average around 29°C, it's a time when the heat is felt more intensely. The month also brings significant rainfall, with over 126 mm of precipitation spread across approximately 19 days, contributing to the high humidity level of 81%. This abundant moisture not only cools the air but also invigorates the lush greenery in the region. For a deeper understanding of what to expect throughout the year, be sure to explore the detailed insights on Saint Thomas Mount Climate.