Kolkata Weather in September

India · September climate averages and travel tips

Avg high31°C (87°F)
Avg low26°C (78°F)
Rainfall293 mm (11.5 in)
RatingPoor 1.4/10

In September, Kolkata has average highs of 31°C (87°F) and lows of 26°C (78°F). The month is very wet, with about 293 mm (11.5 in) of rain spread over 25 days, making it the third wettest month of the year. Humidity averages 89%, so it feels sticky and hotter than the thermometer suggests. You get roughly 12.1 hours of daylight and frequently cloudy skies.

Is September a good time to visit Kolkata?

September is not the best time to visit Kolkata (1.4/10) mainly because of the rain. The weather is much better in December and January.

Visiting Kolkata in September

September weather

September in Kolkata feels hot, sticky and often grey. The high reaches 31°C, and nights stay warm, with a low of 26°C. Rain falls on 25 days, with 293 mm across the month, so showers can interrupt plans. It's a little less rainy than August, but much wetter than October.

You can still visit indoor sights such as the Indian Museum or spend time in covered markets. Keep outdoor walks around the Maidan or Victoria Memorial flexible; heavy rain can leave paths wet and make getting around slow. The short spells of sun can feel intense in the humidity.

Puja season

Durga Puja, Kolkata's biggest festival, sometimes begins in September, though its dates shift each year and often fall in October. If it's on, neighbourhood pandals—temporary festival displays—draw huge crowds, especially around north Kolkata and Kumartuli, where artisans make clay idols.

If you hate crowds, visit before the main Puja days or choose quieter indoor sights. September is generally part of the monsoon low season, so it can be calmer and cheaper than December or January. But accommodation prices and crowds can rise sharply when Puja dates land in the month.

Getting around Kolkata in September

Travelling with kids? Keep a rainy-day plan, since wet afternoons can make long outdoor outings tiring. The city's food is a good fit for a slow evening: try a kathi roll, a Kolkata street-food wrap, when the rain eases.

For a local practical tip, check the weather before crossing the Maidan to Victoria Memorial. The open grounds can become muddy after heavy rain, so a taxi or Metro ride may save a soggy walk. Don't expect much sunshine: September averages just 2.9 hours a day.

September weather at a glance

Average high31°C (87°F)
Average low26°C (78°F)
Daily mean28°C (82°F)
Rainfall293 mm (11.5 in)
Rainy days (1 mm+)25
Humidity89%
Cloud cover78%
Daylight12.1 hours
Est. sunshine2.9 hours/day
Wind7.1 km/h
vs AugustAbout as warm as August, with 34 mm less rain.

What to pack for Kolkata in September

Kolkata weather in other months

Jan25°C / 11°C14 mmExcellentFeb30°C / 15°C23 mmExcellentMar35°C / 20°C27 mmFairApr39°C / 25°C46 mmPoorMay37°C / 27°C157 mmPoorJun34°C / 27°C215 mmPoorJul32°C / 27°C348 mmPoorAug31°C / 26°C327 mmPoorSep31°C / 26°C293 mmPoorOct30°C / 23°C142 mmPoorNov27°C / 17°C19 mmExcellentDec25°C / 12°C16 mmExcellent

← AugustBest time to visit KolkataOctober →

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