Climate Insights for Mumbai

The climate in Mumbai is hot. The average annual temperature is 27°C and approximately 3001mm of precipitation falls per year. September is the wettest month, receiving around 1024mm of rainfall. Mumbai is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, June, April. The coldest months are January, February, December, when temperatures can drop to 23°C.

Mumbai has relatively stable temperatures year-round, staying within a 6°C range. The warmest month is May, when average highs reach 29°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 23°C and an average of 25°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between February and March, with a 2°C shift in average temperatures.

Mumbai is a very wet location, receiving approximately 3001mm of precipitation annually, which averages out to around 250mm per month. The wettest month is September, averaging 1024mm of rainfall. July and June also tend to see above-average precipitation. The driest month is January, with just 0mm. That's 1024mm less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Mumbai is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is August, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 4km/h in winter, 4km/h in spring, 6km/h in summer, 4km/h in autumn.

It is currently summer in Mumbai, which began on June 21, 2026. Mumbai is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in May at around 29°C, while the coldest stretch bottoms out in January near 23°C. Autumn is next, beginning on September 23, 2026 — 64 days from now.

The best time to visit Mumbai is during January and February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 0mm per month. By contrast, May can be uncomfortably hot with temperatures reaching 29°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Mumbai based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.