Weather in Mumbai in September 2025
Average weather
Average temperature in Mumbai in September
The expected average maximum temperature in September is +29°C with a maximum of +32°C and a minimum of +26°C.
The average maximum temperature goes up 17% by the end of the month, compared with the beginning of the month, from +31°C to +32°C.
Is Mumbai warm or cold in September?
Mumbai is typically warm in September.
Maximum temperatures go up compared to the previous month from +28°C to +29°C. The minimum temperature also goes up from +26°C to +26°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Mumbai:
Water temperature in Mumbai in September
Water in Mumbai in September is Very warm. It varies from +27°C to +30°C, with an average of +29°C. This is almost similar to the air temperature, which averages +29°C.
In September, water temperatures are average relative to the rest of the year:
Can you swim in Mumbai in September?
Travel to Mumbai
Climate in Mumbai in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +28°C | +29°C | +31°C | ||||
| Min. temperature | ||||||
| +23°C | +23°C | +21°C | ||||
| Max. temperature | ||||||
| +34°C | +36°C | +38°C | ||||
| Rainfall | ||||||
| 339 mm | 170 mm | 37 mm | ||||
| Wind | ||||||
| 4 m/s | 2 m/s | 1 m/s | ||||
| Avg. water temperature | ||||||
| +28°C | +29°C | +29°C | ||||
| Humidity | ||||||
| 84% | 82% | 71% | ||||
| Air pressure | ||||||
| 1005 HPa | 1006 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 0 | 1 | 14 | ||||
| Cloudy days | ||||||
| 1 | 4 | 8 | ||||
| Rainy days | ||||||
| 28 | 18 | 4 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting warmer as September arrives. The average maximum temperature goes up from +28°C to +29°C during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 339 mm to 170 mm. It feels drier, as humidity decreases from 84% to 82%. Winds are calmer in comparison to August, going down from 4 m/s to 2 m/s on average. The good news is there are likely to be more sunny days in September, from 0 to 1.
But maybe it is worth considering traveling in October as the weather gets better.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Mumbai is gradually decreasing during September, going from 3 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Mumbai?
Climate Change over Years
The climate in Mumbai in September has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+29°C) and the highest in 2018 (+32°C). The driest year was 2012 with only 652 mm of rainfall, and the wettest year was 1983 with 2618 mm.
FAQ
Is September a good time to visit Mumbai?
Can you sunbathe in Mumbai in September?
Can you swim in Mumbai in September?
Is Mumbai rainy in September?
Is it sunny in Mumbai in September?
How much does it cost to fly to Mumbai in September?
Other cities in India
Monthly weather in Mumbai
Source of the data
For this page, we’ve looked at the typical weather in Mumbai, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.