Avg high
28°C
Avg low
25°C
Rainfall
481 mm
Rain days
28.8
Sunshine
7.7 h/day
Daylight
12.1 h
What to pack for Mumbai 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 18 km/h.
How September compares
Best months in Mumbai: January. See the full best time to visit Mumbai guide.
Mumbai in September: the details
In September, Mumbai sees average daytime highs of 28°C (83°F) and overnight lows of 25°C (77°F). Rainfall totals roughly 481 mm across 28.8 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 Mumbai, India (19.07, 72.88) — see our methodology. Actual conditions vary year to year.
Where should you go next month?
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