How hot is Chennai in September?

Daytime highs in Chennai in September average 32°C (90°F); nights drop to about 26°C.

Does it rain in Chennai in September?

Expect around 20.7 rainy days and 152 mm of rainfall in September.

Is September a good time to visit Chennai?

September is a challenging month to visit Chennai — consider January–February instead. Overall travel score: 2.6/10. The best months are January–February.

Chennai weather in September

September is a challenging month to visit Chennai — consider January–February instead. Expect highs around 32°C, lows near 26°C, and about 20.7 days with rain.

2.6 · Challengingtravel score for September

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

Avg high

32°C

Avg low

26°C

Rainfall

152 mm

Rain days

20.7

Sunshine

9 h/day

Daylight

12.1 h

What to pack for Chennai in September

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

Humidity averages 78%; max daily wind around 17 km/h.

How September compares

Best months in Chennai: January–February. See the full best time to visit Chennai guide.

Chennai in September: the details

In September, Chennai sees average daytime highs of 32°C (90°F) and overnight lows of 26°C (79°F). Rainfall totals roughly 152 mm across 20.7 rainy days, and the sun shines about 9 hours per day with 12.1 hours of daylight mid-month. Relative humidity averages 78%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Chennai, India (13.09, 80.28) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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