How hot is Chennai in October?

Daytime highs in Chennai in October average 31°C (87°F); nights drop to about 25°C.

Does it rain in Chennai in October?

Expect around 22.2 rainy days and 217 mm of rainfall in October.

Is October a good time to visit Chennai?

October is a challenging month to visit Chennai — consider January–February instead. Overall travel score: 3.9/10. The best months are January–February.

Chennai weather in October

October is a challenging month to visit Chennai — consider January–February instead. Expect highs around 31°C, lows near 25°C, and about 22.2 days with rain.

3.9 · Poortravel score for October

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

Avg high

31°C

Avg low

25°C

Rainfall

217 mm

Rain days

22.2

Sunshine

9.4 h/day

Daylight

11.7 h

What to pack for Chennai in October

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

Humidity averages 81%; max daily wind around 16 km/h.

How October compares

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

Chennai in October: the details

In October, Chennai sees average daytime highs of 31°C (87°F) and overnight lows of 25°C (77°F). Rainfall totals roughly 217 mm across 22.2 rainy days, and the sun shines about 9.4 hours per day with 11.7 hours of daylight mid-month. Relative humidity averages 81%.

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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