September Weather in Ranchi, India

Last updated: August 21, 2025

Experience the vibrant September weather in Ranchi, India, where the landscape comes alive under an average temperature of 26°C (79°F). Daytime highs can reach a warm 32°C (91°F), while nights provide a comfortable reprieve at around 21°C (71°F). This month also marks a shift towards the rainy season, with a substantial 236 mm (9.3 in) of rainfall recorded across 24 days, creating a lush and refreshing environment. Coupled with high humidity levels at 85%, September in Ranchi is characterized by its sultry atmosphere, making it a unique blend of warmth and refreshing rainfall.

September Temperature in Ranchi

In September, Ranchi begins to transition from the sultry heat of summer to the cooler, more comfortable days of autumn. Temperatures range from a pleasant 21°C (71°F) at night to a daytime maximum of 32°C (91°F), with an average of 26°C (79°F). This moderate climate, with a slight dip in both the minimum and maximum temperatures compared to the previous months, makes it an ideal time for outdoor exploration and enjoying the lush landscapes that emerge from the monsoon season. As the humidity wanes, the air turns crisp, inviting locals and visitors alike to experience the vibrant culture of Ranchi against a backdrop of stunning natural beauty.

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

The chart illustrates September temperature patterns in Ranchi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ranchi, 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).
JanFebMarAprMayJunJulAugSepOctNovDec616776848582797979766861
Data source: Temperature data for Ranchi 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 Ranchi

In September, Ranchi experiences a significant shift in weather as the monsoon begins to recede. With precipitation of 236 mm (9.3 in) over 24 days, this month marks a notable reduction compared to the torrential rains of July and August, yet it remains among the wetter months of the year. September's rainfall, while substantial, reflects a gradual decrease from the peak monsoon totals, suggesting a transition towards the drier months ahead. This continued rainfall supports the lush greenery of the region, as the lingering moisture prepares the landscape for the shift into October's drier conditions, where precipitation drops to 112 mm (4.4 in). Overall, September serves as a crucial bridge in Ranchi's climatic rhythm, balancing the tail end of the monsoon season with the promise of clearer skies to come.

September Precipitation Trends in Ranchi

The chart displays monthly precipitation patterns in Ranchi, 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 Ranchi, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec1218353986219329372236112824
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Ranchi

September in Ranchi, India, marks a transitional phase in the humidity trends throughout the year. Following the peak of the monsoon in July and August, where humidity levels soar to 83% and 86%, September maintains a notably high humidity level at 85%. This slight decrease suggests the lingering effects of the monsoon season, as the air remains saturated with moisture. Interestingly, September's humidity is about the same as in August, highlighting the region's persistent dampness as the rains start to wane. As the year progresses into October, humidity begins to dip, yet September stands out as a month where the warmth and humidity still wrap around Ranchi, capturing the essence of the monsoon's grip before transitioning to the more temperate months ahead.

September Average Humidity in Ranchi

This chart illustrates the average monthly humidity levels in Ranchi, 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 Ranchi is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec51%40%27%22%41%57%83%86%86%82%72%65%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ranchi

As September rolls into Ranchi, India, the UV Index remains positioned at a significant 13, categorizing it as extreme and indicating a critical need for sun protection, with a burn time of just 10 minutes. This month is part of an ongoing trend of elevated UV levels, maintaining the high readings seen throughout the summer. From January's UV Index of 7 to the peak in August at 14, the data illustrates a consistent rise in solar intensity leading into the latter part of the year. As October approaches and the Index drops slightly to 11, residents are reminded of the importance of sun safety during these intense months. For more detailed information on the UV Index in Ranchi, you can visit Ranchi UV Index.

Maximum UV Index Levels in Ranchi for September

The chart shows the monthly maximum UV Index (UVI) for Ranchi 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 Ranchi typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec78101111131314131187
Data source: Ranchi 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 Ranchi

September in Ranchi, India, continues the trend of a gradual decline in sunshine hours following the peak summer months. With 276 hours of sunlight, the month experiences a slight drop from August's 277 hours, indicating a subtle shift towards the cooler season. This decrease follows the energetic burst of light in the summer, where May alone boasted 354 hours. As the monsoon season wraps up, the lingering warmth of September hints at the transition to autumn, while remaining comfortably sunny compared to the cooler months ahead. The consistency in sunshine hours throughout the year underscores Ranchi's vibrant climate, making it a delightful destination for sun-seekers even as the year draws closer to its end.

Monthly Sunshine Duration in Ranchi: September Highlighted

The September sunshine duration represents the total number of hours Ranchi 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.
JanFebMarAprMayJunJulAugSepOctNovDec250h289h337h340h354h306h262h277h276h302h290h291h
Data source: Ranchi September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ranchi During September

As September rolls into Ranchi, India, the likelihood of sunny days takes a notable dip, with only 12% chance of sunshine. This significant decrease follows the rainy months of July and August, which are characterized by an even starker decline in sunshine, dropping to just 6% and 7%, respectively. The trend is clear: as the monsoon season lingers, the sun becomes more elusive, signaling a shift from the brighter, sunnier days of earlier months like January through April, where the sun shines confidently 85% to 86% of the time. As October approaches, residents can anticipate a rebound to a more pleasant 61% chance of sunlight, marking a welcome transition into the drier season.

Percentage of Sunny Days in September in Ranchi

The chart illustrates the percentage of sunny days in Ranchi 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 Ranchi experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%86%73%51%21%6%7%12%61%66%61%
Data source: Ranchi September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ranchi in September

In Ranchi, India, the rhythm of daylight shifts elegantly through the months. Starting with 10 hours of daylight in January, there’s a gradual rise, peaking at 13 hours during the vibrant months of May through July. As summer wanes, daylight begins to recede, with August bringing a subtle dip to 12 hours. This trend continues into September, where daylight holds steady at 12 hours, offering a balanced light for outdoor activities before the days shorten further in October and November. This cycle not only marks the transition of seasons but also highlights the enchanting interplay between light and life in Ranchi throughout the year.

Average Daylight Hours in Ranchi for September

The chart illustrates the variation in daylight duration in Ranchi throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 51m11h 21m12h12h 41m13h 15m13h 32m13h 23m12h 54m12h 15m11h 35m11h10h 42m
Data source: Ranchi daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ranchi

As September unfolds in Ranchi, India, the wind begins to pick up, reaching an average speed of 3.1 m/s (7 mph). This slight increase marks a transition from the summer months, where wind speeds hovered around 3.0 m/s, to a refreshing shift that signifies the onset of autumn. Following the consistent pace of the preceding months, September's breezy conditions create a delightful atmosphere, inviting residents and visitors alike to engage with the outdoors. This trend of increased wind speed not only enhances the vibrant fall scenery but also hints at the changing seasons ahead, as the winds gradually begin to mellow down in October. Embracing this dynamic climate, September stands out as a month of gentle gusts and seasonal shifts, invigorating the landscape of Ranchi.

Average September Wind Speed in Ranchi

The chart displays monthly wind speed patterns in Ranchi, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.02.22.52.63.02.83.02.63.1 m/s2.21.72.2
Data source: Ranchi September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ranchi Compares to Other Months

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

September and January present striking contrasts in weather. In September, temperatures range from a minimum of 21°C (71°F) to a maximum of 32°C (91°F), with an average of 26°C (79°F), accompanied by significant rainfall of 236 mm (9.3 in) over 24 days, contributing to a high humidity level of 85%. In contrast, January brings much cooler temperatures, with a minimum of 7°C (44°F) and a maximum of 28°C (83°F), averaging around 16°C (61°F). The precipitation in January is markedly lower, at just 12 mm (0.5 in) over only 2 days, resulting in a humidity of 51%. For more detailed information, you can check Ranchi weather in January.

September and February present strikingly different weather patterns. September boasts a warm climate with average temperatures around 26°C (79°F) and highs reaching up to 32°C (91°F), accompanied by high humidity levels of 85% and considerable rainfall of 236 mm (9.3 in) spread over 24 days. In contrast, February experiences much cooler temperatures, with an average of 19°C (67°F) and a minimum of just 7°C (45°F), while also seeing far less precipitation at only 18 mm (0.7 in) over just 3 days. The humidity in February drops to a comfortable 40%, making it a distinctively drier month. For more detailed insights into February's climate, you can visit Ranchi weather in February.

When comparing the weather in September and March, it's evident that the two months have distinct characteristics. September presents a warm climate with an average temperature of 26°C (79°F) and high humidity at 85%. However, it also features significant rainfall, with a total precipitation of 236 mm (9.3 in) spread across 24 days, making it quite damp. In contrast, March enjoys milder temperatures, with a minimum of 12°C (53°F) and a maximum reaching up to 39°C (103°F), leading to an average of 24°C (76°F). The month is notably dry, with only 35 mm (1.4 in) of rainfall over a mere 5 days and much lower humidity at 27%. This makes March feel significantly warmer and drier than the rainy and humid September. For more detailed information, check out Ranchi weather in March.

When comparing the weather in September and April, there are notable differences in temperature, precipitation, and humidity. September typically experiences a minimum temperature of 21°C (71°F) and an average of 26°C (79°F), with highs reaching 32°C (91°F). This month sees significant rainfall, averaging 236 mm (9.3 in) over 24 days, accompanied by high humidity levels at 85%. In contrast, April presents a warmer climate with temperatures ranging from a minimum of 17°C (63°F) to a scorching maximum of 42°C (107°F), while the average is a comfortable 29°C (84°F). Precipitation in April is minimal, with only 39 mm (1.5 in) over just 6 days and a much lower humidity level of 22%. For more detailed information, visit Ranchi weather in April.

When comparing the weather in September and May, notable differences emerge. September experiences a range of temperatures from a minimum of 21°C (71°F) to a maximum of 32°C (91°F), with an average of 26°C (79°F). This month is characterized by high humidity at 85% and significant precipitation, totaling 236 mm (9.3 in) over 24 days, making it relatively wet. In contrast, May boasts warmer temperatures, with a minimum of 19°C (66°F) and a soaring maximum of 42°C (107°F), alongside an average of 29°C (85°F). Furthermore, May features considerably lower precipitation at 86 mm (3.4 in) spread over just 11 days, and the humidity drops to a more comfortable 41%. This stark contrast illustrates the humid, rainy conditions of September compared to the hot and drier weather typical of May. For more details, see Ranchi weather in May.

September and June in Ranchi exhibit distinct weather patterns, each with its own characteristics. In September, temperatures range from a minimum of 21°C (71°F) to a maximum of 32°C (91°F), with an average of 26°C (79°F). This month sees considerable rainfall, totaling 236 mm (9.3 in) over approximately 24 days, accompanied by high humidity at 85%.

In contrast, June experiences a higher average temperature of 28°C (83°F), with maximums soaring to 42°C (108°F). It also receives a similar amount of precipitation at 219 mm (8.6 in) over 22 days, but humidity levels are significantly lower at 56%. For a more detailed look at June's weather, you can visit Ranchi weather in June. Overall, September feels wetter and more humid, while June is characterized by hotter temperatures and drier air.

September and July exhibit similar average temperatures, with September ranging from a minimum of 21°C (71°F) to a maximum of 32°C (91°F), while July sees slightly higher temperatures, peaking at 34°C (94°F), with a minimum of 22°C (72°F). However, July is characterized by significantly higher precipitation, totaling 329 mm (13.0 in) over 29 days, compared to September's 236 mm (9.3 in) across 24 days. Humidity levels in both months remain high, but September is marginally more humid at 85%, compared to 83% in July. For a more detailed look at July's weather conditions, visit Ranchi weather in July.

In comparing the weather between August and September, we see notable differences despite their similar average temperatures of 26°C (79°F). September experiences slightly lower minimum and maximum temperatures, with a range from 21°C (71°F) to 32°C (91°F), while August's temperatures hover between 22°C (73°F) and 33°C (91°F). Additionally, September has reduced precipitation levels, receiving 236 mm (9.3 in) over 24 days, compared to August's 372 mm (14.6 in) over 30 days. Both months experience high humidity, with September at 85% and August slightly higher at 86%. For more detailed information, you can check Ranchi weather in August.

In September, the weather is characterized by warm temperatures with a minimum of 21°C (71°F) and an average of 26°C (79°F), while reaching a high of 32°C (91°F). The month is quite rainy, accumulating 236 mm (9.3 in) of precipitation over 24 days, along with high humidity levels averaging 85%.

Conversely, October brings a noticeable shift, with temperatures dropping to a minimum of 15°C (59°F) and an average of 24°C (76°F), while still peaking at 32°C (91°F). Precipitation decreases significantly to 112 mm (4.4 in) across just 12 days, accompanied by a slightly lower humidity of 82%. For more details, you can check Ranchi weather in October.

September and November showcase a striking contrast in weather conditions. In September, temperatures range from a minimum of 21°C (71°F) to a maximum of 32°C (91°F), with an average of 26°C (79°F). The month is characterized by high humidity at 85% and significant rainfall, totaling 236 mm (9.3 in) over 24 days. In contrast, November experiences much cooler temperatures, with a minimum of 11°C (52°F) and an average of 20°C (69°F), peaking at 30°C (87°F). The precipitation drops dramatically to just 8 mm (0.3 in), occurring on only 1 day, and humidity levels decrease to 72%. For more detailed information about November weather, you can visit Ranchi weather in November.

In September, the weather is characterized by warm temperatures, with a minimum of 21°C (71°F) and an average of 26°C (79°F), peaking at a maximum of 32°C (91°F). This month experiences significant rainfall, totaling 236 mm (9.3 in) over 24 days, and high humidity levels at 85%. In contrast, December offers much cooler temperatures, with a minimum of 6°C (43°F), an average of 16°C (62°F), and a maximum of 28°C (82°F). Precipitation drops dramatically to just 24 mm (1.0 in) over only 2 days, and humidity decreases to 65%. For a detailed look at December weather in Ranchi, visit Ranchi weather in December.

Compare Ranchi's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ranchi

As September unfolds in Ranchi, it ushers in a transformative shift from the sultry summer months, marked by a notable increase in rainfall and humidity. With an average temperature that offers a pleasant respite, the city experiences a humid embrace as the monsoon peaks, making it one of the wettest months of the year. The frequent downpours not only contribute to lush greenery but also create a refreshing atmosphere that differs significantly from the dry heat of preceding months. To delve deeper into how this month shapes Ranchi's climate, explore our comprehensive guide on Ranchi Climate.