Weather in Mumbai in October

Shoulder season. October sits in between. You will get good days and you will lose some. Highs average 31.9 °C, lows 22.7 °C, and rain falls on 11 days — nothing in the month is working against you.

October ranks 4 of 12 in Mumbai: past the worst of the year but short of December, which is the month to book if the dates are open.

Rain on 11 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 31.9 °C days and 22.7 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 27 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest October day reached 35.9 °C and the coldest night fell to 17.2 °C, and the wettest single day dropped 77 mm — roughly 74% of the month's rain in one day.

October is moderately variable: 5 mm in the driest year against 209 mm in the wettest, around an average of 104 mm. Roughly two Octobers in three land near that average, and the third does something else entirely.

Wind is light at 6.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, high enough to notice on the warm days without dominating them.

How October sits in the year

Temperatures hold steady either side: 29.8 °C in September, 31.9 here, 31.9 in November. Nothing about the timing within the month matters much. Rain is the thing that moves: November brings 8 days less of it, so pushing the dates later buys drier weather.

Daylight in October

11.7 hours of daylight, losing 0.5 hours across the month. That is between Mumbai's extremes of 13.3 and 11 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 29 °C in October — warm enough that the water offers no relief from the heat. The sea peaks at 29.7 °C in May and bottoms out at 26.1 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

October in Mumbai versus nearby

If Mumbai is one option among several, the nearby comparison is worth making. Virār is a better bet in October — 2.2 °C cooler, 1 day less rain. Pune is a better bet in October — 3.2 °C cooler, 1 day more rain.

So: October is a compromise. December is 21 points better and is what Mumbai is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Mumbai

See all twelve months in Mumbai, or where else to go in October.