What September feels like in Mumbai
September falls in Mumbai's wet season — the rainfall numbers rise clearly above the dry months. Expect proper heat in the afternoon — slow down between noon and four. Evenings ease the heat only slightly, and nights remain very warm. Thick, humid air means clothes cling and the heat feels stronger than the number.
Rain in Mumbai in September
September is persistently wet here: some rain falls on most days. Rainy days are intense, averaging about 14.8 mm (0.6 in) — downpours rather than drizzle. Across the year Mumbai averages about 17 mm per rainy day, so September is typical.
Daylight and sunshine in September
Mid-month, Mumbai gets 12 h 16 min of daylight, from sunrise near 6:26 am to sunset near 6:42 pm. Days are getting shorter: 31 min less daylight than in mid-August. About 69% of daylight hours are sunny; in short, there are plenty of bright spells.
How September compares to the rest of the year
Ranked by average high, September comes out as the 3rd coolest month in Mumbai. Against August, the average high is 0.7°C (1.3°F) higher, with 109 mm less rain. October continues the upward trend. October averages a high of 31.2°C (88.2°F).
Who September suits
- Sightseeing: less ideal — rain falls on more than half the days.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
- Museums & indoor: a good choice — with rain on most days, galleries and museums make easy plans.
Tips for visiting Mumbai in September
Rain Protection
A compact umbrella and a light waterproof jacket.
Sun Protection
Protect yourself from strong sun: hat, SPF and plenty of water.
Quick questions
How warm is Mumbai in September?
It feels hot: typical highs are 28.5°C (83.3°F), with lows near 25.1°C (77.2°F).
Does it rain a lot in Mumbai in September?
It does: about 25 rainy days bring roughly 369 mm, so plan some indoor options.
What should I wear in Mumbai in September?
Based on the averages: rain protection and sun protection. There is little need to change for the evening.
Is September or October better for visiting Mumbai?
October, clearly: it ranks #5 of 12 among Mumbai's months, against #9 for the other. October is warmer and has fewer rainy days.