September Weather in Puducherry, India

Last updated: August 21, 2025

September in Puducherry, India, presents a blend of warmth and moisture, with maximum temperatures peaking at 33°C (92°F) and averaging around 29°C (84°F). The minimum temperature rarely dips below 25°C (77°F), creating a consistently warm atmosphere. This month also witnesses significant rainfall, totaling 121 mm (4.8 in) across approximately 18 days, contributing to the region's high humidity levels of 76%. Visitors can expect a tropical ambiance, where the interplay of heat and rain brings forth the lush greenery characteristic of Puducherry, making it a unique experience for all.

September Temperature in Puducherry

As September rolls into Puducherry, the temperatures begin to ease slightly from the peak summer heat, though the warmth remains palpable. With minimum temperatures hovering at 25°C (77°F) and averages around 29°C (84°F), locals and visitors can enjoy a more comfortable climate compared to the scorching days of May and June. The maximum temperatures drop to about 33°C (92°F), providing a welcome reprieve from the oppressive heat experienced earlier in the year. This mild transition signals the approach of the monsoon's end, inviting lush greenery and a refreshing atmosphere, making September an ideal month for exploring the charming coastal town.

September Weather in Puducherry: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Puducherry, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Puducherry, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec777982858787868584828078
Data source: Temperature data for Puducherry generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Puducherry

In September, Puducherry experiences a significant surge in precipitation, receiving 121 mm (4.8 in) of rainfall over approximately 18 days. This marks a notable increase from the previous months, particularly following the heightened rainfalls of July and August. The transition into this month signals the onset of the northeast monsoon, contributing to the area's wettest period of the year. As the monsoon progresses, the rainfall peaks in October, indicating that September serves as a prelude to the region's most intense precipitation. This consistent rainfall pattern highlights the importance of the monsoon season for Puducherry, providing essential water supply for agriculture and replenishing local water bodies.

September Precipitation Trends in Puducherry

The chart displays monthly precipitation patterns in Puducherry, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Puducherry, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec4781312205085111121196370180
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Puducherry

September marks a noticeable shift in humidity levels in Puducherry, India, as the average climbs to a balmy 76%. This increase continues the trend of rising moisture that begins in the preceding months, with August recording 69% humidity. The arrival of September signals the end of the summer heat and a gradual transition into the monsoon season, where humidity peaks further in October (87%) and November (88%). Notably, the humidity levels in September are the highest recorded since June (71%), illustrating the city's characteristic sultry embrace as the rains begin to nourish the landscape. As the year progresses, these fluctuations underscore Puducherry's tropical climate, where high humidity becomes a hallmark of the monsoon months.

September Average Humidity in Puducherry

This chart illustrates the average monthly humidity levels in Puducherry, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Puducherry is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%62%57%56%64%71%64%69%76%87%88%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Puducherry

In September, Puducherry experiences a consistently high UV Index of 13, classifying it within the extreme exposure category. This trend is notable as it maintains the elevated levels observed in the previous months of July and August, where the UV Index also peaked at 13. With a burn time of just 10 minutes, residents and visitors alike should exercise caution when spending time outdoors. As the year transitions to October, there's a slight decrease to an index of 11, yet the overall pattern indicates that this coastal city faces significant UV exposure during its monsoon season. For more detailed information on UV levels throughout the year, visit Puducherry UV Index.

Maximum UV Index Levels in Puducherry for September

The chart shows the monthly maximum UV Index (UVI) for Puducherry in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Puducherry typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121315121213131311109
Data source: Puducherry September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Puducherry

As September rolls in, Puducherry experiences a gradual decline in sunshine hours, averaging around 298 hours of bright daylight. This marks a slight dip from the peak of 352 hours in May and reflects a transition towards the cooler months ahead. Despite this decrease, September still offers a generous amount of sunlight compared to the winter months, such as November, which sees only 258 hours. The consistent patterns observed over the months suggest that while the summer sun begins to fade, Puducherry retains a warm glow, setting a beautiful backdrop for the city's vibrant culture and serene coastal vistas.

Monthly Sunshine Duration in Puducherry: September Highlighted

The September sunshine duration represents the total number of hours Puducherry experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec264h309h345h342h352h321h316h304h298h309h258h292h
Data source: Puducherry September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Puducherry During September

September in Puducherry sees a notable dip in sunny weather, with only a 16% chance of clear skies. This marks a continuation of the monsoon season, where the likelihood of sunshine is at its lowest, following even dimmer prospects in July and August. As the city transitions into autumn, the weather begins to shift with slightly brighter days expected in October, but for now, overcast skies and humidity prevail. Visitors should brace for the possibility of rain and prepare for a typically cloudy month, keeping outdoor plans flexible!

Percentage of Sunny Days in September in Puducherry

The chart illustrates the percentage of sunny days in Puducherry throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Puducherry experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec33%70%69%56%37%21%18%16%16%18%8%60%
Data source: Puducherry September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Puducherry in September

As the calendar turns to September in Puducherry, India, residents enjoy a consistent 12 hours of daylight, mirroring the longer hours experienced over the summer months from March through August. This trend highlights a period of relatively stable daylight that peaks in the warm months, fostering a vibrant atmosphere for both locals and visitors. Following September, daylight hours gradually decline into the autumn months of October and November, settling back to 11 hours as the year winds down. The seamless transition of daylight duration throughout the year paints a picturesque picture of Puducherry's climate, offering a rhythmic cadence of light that enhances the coastal city’s charm.

Average Daylight Hours in Puducherry for September

The chart illustrates the variation in daylight duration in Puducherry throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 29m11h 44m12h 3m12h 23m12h 39m12h 48m12h 43m12h 29m12h 10m11h 50m11h 33m11h 25m
Data source: Puducherry daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Puducherry

As September arrives in Puducherry, the coastal winds begin to whisper a gentle lull, with an average speed of 3.4 m/s (8 mph). This marks a slight decline from the previous summer months, where winds reached up to 4.2 m/s (9 mph) in June, highlighting a shift towards calmer breezes as the monsoon season winds down. Following the rhythm of the year, September’s winds feel notably softer than the vigor of summer, creating a serene backdrop for the city's vibrant streets and lush landscapes. As the year progresses towards October, the promise of tranquility continues, with wind speeds gradually tapering off, inviting residents and visitors alike to relish the peaceful coastal atmosphere. Overall, September embodies that transitional beauty—where the lingering warmth of summer begins to dance with the anticipation of fall.

Average September Wind Speed in Puducherry

The chart displays monthly wind speed patterns in Puducherry, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.93.62.83.64.14.23.83.73.4 m/s2.93.63.8
Data source: Puducherry September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Puducherry Compares to Other Months

Weather in Puducherry varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Puducherry, focusing on differences in temperature, rainfall, humidity, and UV levels.

In September, the weather is warmer and more humid, with average temperatures hovering around 29°C (84°F) and maximums reaching 33°C (92°F). The month also sees significant rainfall, with 121 mm (4.8 in) spread over 18 rainy days. In contrast, January offers a milder climate, with average temperatures dropping to 25°C (78°F) and maximums around 29°C (85°F). The precipitation is much lower at 47 mm (1.8 in), occurring over just 6 days, leading to slightly drier conditions with humidity at 72%. To explore more about the weather specifics in January, you can check Puducherry weather in January.

September and February showcase contrasting weather patterns. September experiences relatively high temperatures, with a minimum of 25°C (77°F) and an average of 29°C (84°F), peaking at 33°C (92°F). This month is characterized by significant rainfall, with 121 mm (4.8 in) spread over 18 days, contributing to a humidity level of 76%. In contrast, February has milder temperatures, ranging from a minimum of 20°C (69°F) to an average of 26°C (79°F), and a maximum of 30°C (87°F). Precipitation is minimal during this month, with only 8 mm (0.3 in) occurring over just 1 day, while humidity drops to a more comfortable 62%. For a more detailed look at February’s climate, check out Puducherry weather in February.

In September, the weather is typically warmer and more humid, with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 33°C (92°F) and an average of 29°C (84°F). The month also sees substantial rainfall, with 121 mm (4.8 in) spread over 18 days, contributing to a humidity level of 76%. In contrast, March offers slightly cooler temperatures, with a minimum of 22°C (72°F) and an average of 28°C (82°F), while still reaching up to 33°C (92°F). Notably, March experiences much less precipitation, totaling only 13 mm (0.5 in) over just 3 days, and the humidity drops to a more comfortable 57%. For more detailed insights on March weather, you can refer to Puducherry weather in March.

In comparing the weather between September and April, both months present warm temperatures, with September experiencing a minimum of 25°C and an average of 29°C, similar to April's temperatures. However, April tends to be slightly warmer overall, peaking at a maximum temperature of 35°C compared to September's maximum of 33°C. Notably, September is much wetter, receiving 121 mm of rainfall over 18 days, while April sees a much drier climate with only 12 mm of rain across 4 days. Additionally, humidity levels are significantly lower in April at 56%, contrasted with a higher 76% in September, making April's weather generally more comfortable. For more detailed information, you can check Puducherry weather in April.

In comparing the weather of September and May, both months experience warm temperatures with a minimum of around 25°C (77°F) and high averages, though May tends to be hotter overall. September sees an average temperature of 29°C (84°F) with a maximum reaching 33°C (92°F), while May can peak at a scorching 37°C (99°F) and has an average of 30°C (87°F). Additionally, September is much more humid with a humidity level of 76% compared to May's 64%. Rainfall also differs significantly; September experiences 121 mm (4.8 in) of precipitation over 18 days, while May is relatively dry with only 20 mm (0.8 in) over just 5 days. For a more detailed look at May's climate, you can check Puducherry weather in May.

Comparing the weather in September and June reveals some interesting trends. In June, the temperatures range from a minimum of 26°C (79°F) to a maximum of 35°C (96°F), with an average temperature of 31°C (87°F). This month experiences relatively low precipitation at 50 mm (2.0 in) over 10 days and a humidity level of 71%. In contrast, September sees slightly cooler temperatures, with a minimum of 25°C (77°F), an average of 29°C (84°F), and a maximum of 33°C (92°F). However, it is much wetter, accumulating 121 mm (4.8 in) of rainfall over 18 days and exhibiting higher humidity at 76%. For a detailed breakdown of June's weather in Puducherry, check out Puducherry weather in June.

Comparing the weather in September and July reveals some interesting differences. September tends to be slightly cooler, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 33°C (92°F), while July is warmer, peaking at 35°C (96°F). However, July experiences less rainfall, with 85 mm (3.3 in) over 17 days compared to September's 121 mm (4.8 in) over 18 days. Additionally, humidity is lower in July at 64%, making it feel less muggy than September's higher humidity level of 76%. For a more detailed look at July weather, you can check out Puducherry weather in July.

In comparing the weather between August and September, both months experience similar minimum temperatures, averaging around 25°C (77°F). However, September tends to be slightly cooler overall, with an average temperature of 29°C (84°F) compared to August's average of 29°C (85°F). Notably, September records higher precipitation with 121 mm (4.8 in) over 18 days, surpassing August, which received 110 mm (4.3 in) over 17 days. Additionally, the humidity in September is higher at 76%, in contrast to August's 69%. For more details on August weather specifically, you can check Puducherry weather in August.

September and October both showcase warm temperatures, with September averaging slightly higher at 29°C (84°F) compared to October's 28°C (83°F). However, October brings increased humidity at 87%, up from September's 76%, creating a more tropical atmosphere. Precipitation also rises significantly in October, with 195 mm (7.7 in) recorded over 21 days, compared to September's 121 mm (4.8 in) over 18 days. This shift can lead to more frequent rain showers in October, affecting outdoor plans. For more detailed information on October weather, you can check Puducherry weather in October.

September's weather is characterized by warmer temperatures, with a minimum of 25°C (77°F) and an average high of 33°C (92°F). However, it also sees considerable rainfall, totaling 121 mm (4.8 in) over 18 days, with a humidity level of 76%. In contrast, November brings slightly cooler temperatures, with a minimum of 23°C (74°F) and an average high of 31°C (89°F). However, November is significantly wetter, experiencing 370 mm (14.6 in) of precipitation spread over 23 days and higher humidity at 88%. For more insights, you can refer to Puducherry weather in November.

September and December showcase notable differences in weather patterns. In September, the temperatures range from a minimum of 25°C (77°F) to a maximum of 33°C (92°F), with an average of 29°C (84°F). The month experiences significant rainfall, totaling 121 mm (4.8 in) over 18 days, accompanied by a humidity level of 76%. In contrast, December sees slightly cooler temperatures, with a minimum of 22°C (71°F) and a maximum of 30°C (86°F), averaging 26°C (79°F). However, this month also brings an increase in rainfall, with 180 mm (7.1 in) over just 12 days and a higher humidity of 83%. For more detailed insights, you can check Puducherry weather in December.

Compare Puducherry's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Puducherry

September in Puducherry brings a noticeable transition in weather, as the average temperature settles around 29°C (84°F), creating a comfortable yet humid environment. With frequent rain showers, totaling 121 mm over 18 days, this month typically marks the tail end of the monsoon season, contrasting sharply with the drier summer months. The elevated humidity level of 76% adds a tropical feel, making the air feel warmer than it is. This blend of warm and wet conditions provides a refreshing shift from the sweltering heat of earlier months. For a deeper understanding of how these conditions shape travel plans, check out the detailed Puducherry Climate.