How hot is Kolkata in September?

Daytime highs in Kolkata in September average 31°C (88°F); nights drop to about 26°C.

Does it rain in Kolkata in September?

Expect around 27.3 rainy days and 341 mm of rainfall in September.

Is September a good time to visit Kolkata?

September is a challenging month to visit Kolkata — consider November–February instead. Overall travel score: 3.1/10. The best months are November–February.

Kolkata weather in September

September is a challenging month to visit Kolkata — consider November–February instead. Expect highs around 31°C, lows near 26°C, and about 27.3 days with rain.

3.1 · Poortravel score for September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Avg high

31°C

Avg low

26°C

Rainfall

341 mm

Rain days

27.3

Sunshine

7.7 h/day

Daylight

12.1 h

What to pack for Kolkata in September

light, breathable clothing
sun protection (hat, SPF 50)
a compact umbrella or rain shell — rain is frequent
expect humid, sticky conditions

Humidity averages 88%; max daily wind around 16 km/h.

How September compares

Best months in Kolkata: November–February. See the full best time to visit Kolkata guide.

Kolkata in September: the details

In September, Kolkata sees average daytime highs of 31°C (88°F) and overnight lows of 26°C (78°F). Rainfall totals roughly 341 mm across 27.3 rainy days, and the sun shines about 7.7 hours per day with 12.1 hours of daylight mid-month. Relative humidity averages 88%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Kolkata, India (22.56, 88.36) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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