Weather in Kolkata in September 2025
- September is usually the wettest month of the year in Kolkata;
Average weather
Average temperature in Kolkata in September
The expected average maximum temperature in September is +32°C with a maximum of +35°C and a minimum of +26°C.
The average maximum temperature goes down 56% by the end of the month, compared with the beginning of the month, from +34°C to +29°C.
Is Kolkata warm or cold in September?
Kolkata is typically hot in September.
Maximum temperatures go up compared to the previous month from +32°C to +32°C. The minimum temperature also goes down from +27°C to +26°C.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
Take a look at how September is compared to other months in Kolkata:
Climate in Kolkata in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +32°C | +32°C | +31°C | ||||
| Min. temperature | ||||||
| +25°C | +23°C | +18°C | ||||
| Max. temperature | ||||||
| +36°C | +36°C | +36°C | ||||
| Rainfall | ||||||
| 213 mm | 175 mm | 85 mm | ||||
| Wind | ||||||
| 2 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 86% | 86% | 82% | ||||
| Air pressure | ||||||
| 1000 HPa | 1004 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 0 | 1 | 10 | ||||
| Cloudy days | ||||||
| 2 | 2 | 5 | ||||
| Rainy days | ||||||
| 25 | 22 | 13 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. The temperature levels stay the same in the area of +32°C for average maximum temperature during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 213 mm to 175 mm. Humidity levels don’t change as the month goes on, averaging around 86%. Winds are calmer in comparison to August, going down from 2 m/s to 1 m/s on average. The good news is there are likely to be more sunny days in September, from 0 to 1.
But maybe it is worth considering traveling in October as the weather gets better.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Kolkata is gradually increasing during September, going from 2 m/s to 4 m/s over the course of the month.
Rain
How was the weather last September in Kolkata?
Climate Change over Years
The climate in Kolkata in September has not changed much over the last 43 years.
The average temperature was the lowest in 1981 (+30°C) and the highest in 2009 (+32°C). The driest year was 2012 with only 487 mm of rainfall, and the wettest year was 1990 with 1926 mm.
FAQ
Is September a good time to visit Kolkata?
Can you sunbathe in Kolkata in September?
Is Kolkata rainy in September?
Is it sunny in Kolkata in September?
Other cities in India
Monthly weather in Kolkata
Source of the data
For this page, we’ve looked at the typical weather in Kolkata, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.