Last updated: August 21, 2025
In September, Thrissur, India, experiences a warm and humid climate characterized by an average temperature of 27°C (80°F), peaking at a maximum of 33°C (92°F). The humidity remains high at 87%, creating a distinctly muggy atmosphere. This month is particularly wet, with precipitation totaling 287 mm (11.3 in) over approximately 26 rainy days, making it one of the wetter periods of the year. Travelers and locals should prepare for moisture-laden air and frequent showers, embodying the rich tropical essence of Thrissur's weather.
In September, Thrissur experiences a subtle transition as the monsoon season begins to wane. The temperatures remain comfortably warm, with minimums around 23°C (74°F) and averages of 27°C (80°F). The maximum temperature peaks at 33°C (92°F), signaling a gradual shift from the cooler, rainy months of July and August. As the city welcomes the onset of fall, residents and visitors can expect a delightful mix of warm days and cooler nights, often accompanied by the refreshing breezes that characterize this time of year, making it an inviting period for exploration and relaxation.
September in Thrissur, India, marks a significant transition in the monsoon season, showcasing a substantial precipitation total of 287 mm (11.3 in) over 26 rainy days. This period typically experiences a dramatic drop from August's peak rainfall, yet it remains wet enough to sustain the lush landscape characteristic of the region. The consistent rainfall this month not only contributes to the overall monsoon totals but also sets the stage for October's similar patterns, with 316 mm (12.4 in) anticipated. As the rains taper off, September serves as a vital bridge between the heaviest monsoon months and the drier spell ahead, highlighting Thrissur's unique climatic rhythm.
September in Thrissur, India, is characterized by high humidity levels, reaching 87%—a figure consistent with the preceding months of July and August. This marks the peak of the monsoon season, when the air is often dense with moisture. From the start of the year, humidity rises steadily, starting at a relatively dry 64% in January and dipping to 57% in February and March. As the months progress, the humidity climbs, particularly during the pre-monsoon and monsoon periods. After September, a gradual decline follows, with October seeing a slight drop to 84%. This pattern illustrates the tropical climate's influence on Thrissur, showcasing the dramatic shift from the cooler, drier months to the intense moisture of the monsoon season.
In September, Thrissur experiences one of its highest UV Index levels, peaking at 14, signaling an extreme exposure category and a rapid burn time of just 10 minutes. This trend highlights a consistent elevation in UV intensity from previous months, particularly as the region transitions out of the monsoon season. The UV Index for September mirrors the peaks observed in April, reinforcing the need for effective sun protection measures throughout the month. As the year progresses, early months show slightly lower indices, yet the urgent call for vigilance against harmful UV rays resonates clearly. For more detailed insights on UV levels and their implications, check out the full report at Thrissur UV Index.
UV Risk Categories
As September rolls into Thrissur, India, the region enjoys a delightful 266 hours of sunshine, a slight dip compared to the vibrant summer months of March and April. After a wetter monsoon season in June and July, the sunshine begins to re-emerge, reflecting a gradual return to clearer skies. This trend marks a transition, with September's sunlight serving as a gentle prelude to the sunnier days of October and November, which promise 272 and 282 hours respectively. Overall, the gradual ebb and flow of daylight hours throughout the year paints a vivid picture of Thrissur's climate, blending warmth and vitality with the rhythm of the seasons.
In Thrissur, India, the likelihood of sunny weather in September paints a rather gloomy picture, with only an 11% chance of sunshine. This aligns with the city’s transition from the monsoon season, where heavy rains dominate the preceding months, notably July and August with mere 7% and 6% sunshine chances, respectively. As the year progresses, the sun begins to re-emerge, notably in the months of October and November, which see slight improvements to 7% and 5%. However, as the calendar turns to December, travelers can rejoice in a much more appealing 77% likelihood of sunny days. Hence, September stands out as a particularly overcast month, reflective of Thrissur's humid monsoonal climate.
In September, Thrissur, India, enjoys a consistent 12 hours of daylight, mirroring the extended daylight seen during the preceding months from March through August. This balance of light signifies a peak in the region's tropical climate, providing ample opportunity for outdoor activities and natural exploration. As the month progresses, daylight begins to wane, leading to a gradual transition into October, where daylight returns to 11 hours. This pattern not only reflects the changing seasons but also emphasizes the relatively stable daylight hours that characterize the region from March to September, creating an inviting atmosphere for both residents and visitors.
In September, Thrissur enjoys a gentle breeze with an average wind speed of 2.0 m/s (5 mph), marking a slight dip from the more spirited gusts of July at 2.5 m/s (6 mph). This month transitions smoothly from the monsoon rains of August, maintaining a comfortable atmosphere as the region shifts towards drier conditions. The wind, though modest compared to the peak of the rainy season, continues to offer a refreshing touch amid the lingering humidity. This seasonal ebb and flow of wind speeds reveals a harmonious rhythm in Thrissur's climate, allowing residents to savor the gentle winds that precede the cooler months, making September a delightful time in this vibrant Indian town.
Weather in Thrissur varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Thrissur, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present contrasting weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 33°C (92°F) with an average of 27°C (80°F). The month is characterized by high humidity at 87% and significant rainfall, totaling 287 mm (11.3 in) across 26 days, making it one of the wettest months. In contrast, January experiences milder temperatures with a minimum of 20°C (69°F) and a maximum of 37°C (99°F), averaging around 28°C (83°F). This month boasts much lower precipitation, with only 18 mm (0.7 in) over just 3 days, and a reduced humidity level of 64%. For more detailed information, you can check Thrissur weather in January.
September and February present distinctly different weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 33°C (92°F), with an average of 27°C (80°F). This month is characterized by high humidity levels at 87% and significant rainfall, totaling 287 mm (11.3 in) over 26 days. In contrast, February boasts warmer conditions with minimum temperatures around 22°C (71°F) and maximums soaring to 39°C (102°F), averaging 29°C (85°F). Notably, February experiences much lower precipitation at just 6 mm (0.3 in) over 2 days, along with substantially reduced humidity at 57%. To learn more about the climate specifics during this month, visit Thrissur weather in February.
September and March showcase distinct weather patterns. September typically features milder temperatures with a minimum of 23°C (74°F) and an average of 27°C (80°F), peaking at a maximum of 33°C (92°F). The month is characterized by high humidity at 87% and significant rainfall, averaging 287 mm (11.3 in) over 26 days, creating a damp atmosphere. In contrast, March experiences slightly higher temperatures, starting at a minimum of 24°C (75°F) and reaching an average of 30°C (86°F), soaring to a maximum of 39°C (103°F). Rainfall is considerably lower in March, with only 52 mm (2.0 in) over 11 days and a reduced humidity level of 57%. The differing precipitation and humidity levels highlight March's drier and hotter conditions compared to the wet and humid environment of September. For more detailed insights, check out Thrissur weather in March.
In September, the weather is characterized by warm temperatures ranging from a minimum of 23°C (74°F) to a maximum of 33°C (92°F), with an average of 27°C (80°F). However, this month sees significant rainfall, with 287 mm (11.3 in) over 26 days and high humidity at 87%. In contrast, April offers a hotter experience with temperatures peaking at 39°C (103°F) and an average of 29°C (85°F), while also maintaining a minimum of 23°C (74°F). Precipitation in April is considerably lower at 127 mm (5.0 in) over 24 days, and humidity is also reduced to 68%. For more details on April weather, visit Thrissur weather in April.
In comparing the weather of September and May, both months exhibit warm temperatures, but May tends to be slightly hotter overall, with average highs reaching up to 35°C (95°F) compared to September's maximum of 33°C (92°F). Both months share a minimum temperature of 23°C (74°F), but May's average temperature of 28°C (83°F) slightly edges out September's average of 27°C (80°F). Precipitation levels are similar, with September receiving 287 mm (11.3 in) over 26 days and May seeing a marginally higher amount of 289 mm (11.4 in) across 28 days. Moreover, humidity is notably higher in September at 87%, while May experiences a slightly lower humidity level of 81%. For a more detailed look at the weather in May, you can visit Thrissur weather in May.
In comparing the weather of September and June, both months experience similar temperature ranges, with minimum temperatures around 23°C (74°F) and average temperatures hovering between 27°C (80°F) to 28°C (82°F). However, September tends to be slightly warmer, with a maximum temperature reaching 33°C (92°F) compared to June's highest of 32°C (91°F). Rainfall is significantly different; September receives 287 mm (11.3 in) over 26 days, whereas June is much wetter with 451 mm (17.7 in) across 30 days. The humidity levels are also comparable, with September at 87% and June at 84%, making both months fairly humid. For more detailed information, you can refer to Thrissur weather in June.
September and July both experience warm temperatures, with minimums hovering around 23°C (74°F) in both months. However, September's average temperature is slightly higher at 27°C (80°F), compared to July's average of 26°C (80°F). While July sees a maximum of 32°C (90°F), September can go up to 33°C (92°F). Notably, July is significantly wetter, with 444 mm (17.5 in) of rain spread over 30 days, compared to September’s 287 mm (11.3 in) over 26 days. Both months share high humidity levels at 87%, creating a consistently muggy atmosphere. For a detailed look at July's weather patterns, check Thrissur weather in July.
In September, the weather shows a slight increase in overall temperatures compared to August, with average temperatures rising to 27°C (80°F) from August's 26°C (80°F). However, September experiences significantly less precipitation, totaling 287 mm (11.3 in) over 26 days, in contrast to August's 507 mm (20.0 in) across 29 days. The humidity remains constant at 87% for both months, creating a consistently muggy atmosphere. For a detailed look at the weather conditions in August, check out Thrissur weather in August.
September and October present slightly different weather patterns. In September, temperatures range from a minimum of 23°C (74°F) to a maximum of 33°C (92°F), with an average of 27°C (80°F). The month sees significant rainfall, totaling 287 mm (11.3 in) over 26 days, coupled with high humidity levels at 87%. In contrast, October experiences a similar temperature range but slightly skewed towards the higher end, with a minimum of 22°C (72°F), an average of 27°C (81°F), and a maximum of 34°C (93°F). Rainfall increases to 316 mm (12.4 in) across 27 days, while humidity decreases slightly to 84%. For more detailed insights, check out Thrissur weather in October.
In September, temperatures are warm, with a minimum of 23°C (74°F), an average of 27°C (80°F), and a maximum reaching 33°C (92°F). The month experiences significant rainfall, totaling 287 mm (11.3 inches) spread over 26 days, accompanied by high humidity levels at 87%. In contrast, November sees slightly cooler temperatures, with a minimum of 22°C (71°F) and an average of 28°C (82°F), although it can peak at 34°C (94°F). Precipitation decreases to 170 mm (6.7 inches) over 18 days, and humidity drops to 82%. Overall, November offers a warmer average but less rainfall and lower humidity compared to September. For more details, you can check Thrissur weather in November.
September and December weather in Thrissur present noticeable contrasts. September typically sees temperatures ranging from a minimum of 23°C (74°F) to a maximum of 33°C (92°F), accompanied by high humidity at 87% and significant rainfall averaging 287 mm over 26 days. In contrast, December offers slightly warmer average temperatures, peaking at 36°C (97°F), but considerably less precipitation, with only 39 mm falling over just 6 days and humidity dropping to 76%. This transition marks a shift from the heavy monsoon season of September to the drier conditions of December. For more detailed insights, check Thrissur weather in December.
As September rolls in, Thrissur transforms into a vibrant symphony of weather contrasts that set it apart from other months. The average temperature hovers pleasantly around 27°C, offering a respite from the summer swelter, while maximum highs can reach up to 33°C. However, with the arrival of the monsoon, heavy rainfall becomes a hallmark of this month, drenching the region with approximately 287 mm over 26 days, resulting in a humid atmosphere with levels around 87%. This unique blend of warmth and moisture creates a lush, rejuvenating landscape, making September a particularly enchanting time to experience the rich tapestry of Thrissur's climate. For more detailed insights, visit Thrissur Climate.