October weather forecast and climate
Mumbai, India

The iconic ancient arch monument of the Gateway of Mumbai, India
The iconic ancient arch monument of the Gateway of Mumbai, India
October, the first month of the post monsoon autumn, in Mumbai, is still a tropical month, with average temperature ranging between min 23.4°C (74.1°F) and max 33.2°C (91.8°F).
The perfect water temperature of 28.8°C (83.8°F) with 55.8mm (2.2") of accumulated rainfall and only 3 rainfall days, makes October a great period for swimming and other water activities.

Temperature

In October, the average high-temperature is almost the same as in September - a still tropical 33.2°C (91.8°F). The average low-temperature, in Mumbai, is 23.4°C (74.1°F).

Heat index

The average heat index in October is calculated to a burning hot 47.9°C (118.2°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like differences in body mass, height, and shape, wind, metabolic differences, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In October, the average relative humidity is 78%.

Rainfall

In Mumbai, India, during October, the rain falls for 3 days and regularly aggregates up to 55.8mm (2.2") of precipitation. Throughout the year, in Mumbai, there are 78.9 rainfall days, and 2258mm (88.9") of precipitation is accumulated.

Sea temperature

In October, the average sea temperature in Mumbai is 28.8°C (83.8°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In October, the average length of the day in Mumbai, India, is 11.7h.

Sunshine

In Mumbai, the average sunshine is 7.7h.

UV index

In Mumbai, the average daily maximum UV index in October is 10. A UV Index reading of 8 to 10 represents a very high health risk from the exposure to the Sun's UV rays for the average person.
Note: In October, the average maximum UV index of 10 translate into the following recommendations:
Take special precautions, as unprotected skin can be damaged and can burn quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in October in Mumbai?

The average high-temperature, in October, in Mumbai, is 33.2°C (91.8°F), while the average low-temperature is 23.4°C (74.1°F). In October, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines relative humidity and air temperature, is evaluated at 47.9°C (118.2°F).

What is the average humidity in October in Mumbai?

The average relative humidity in October in Mumbai, India, is 78%.

How many days does it rain in October in Mumbai?

In October, the rain falls for 3 days. Throughout October, 55.8mm (2.2") of precipitation is accumulated.

What is the water temperature in October in Mumbai?

In Mumbai, India, the average seawater temperature in October is 28.8°C (83.8°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the average length of the day in October in Mumbai?

In Mumbai, India, the average length of the day in October is 11.7h.

How many hours of sunshine does Mumbai have in October?

The average sunshine in October in Mumbai is 7.7h.

How high is the UV index in October in Mumbai?

In October, the average daily maximum UV index in Mumbai is 10. A UV Index of 8 to 10 symbolizes a very high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in October - Mumbai, India
  • Average high temperature in October: 33.2°C

The warmest month (with the highest average high temperature) is November (33.5°C).
The month with the lowest average high temperature is August (29.6°C).

  • Average low temperature in October: 23.4°C

The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).

Average humidity in October - Mumbai, India
  • Average humidity in October: 78%

Months with the highest relative humidity are July and August (86%).
The month with the lowest relative humidity is February (67%).

Average rainfall in October - Mumbai, India
  • Average rainfall in October: 55.8mm

The wettest month (with the highest rainfall) is July (799.7mm).
The driest month (with the least rainfall) is March (0.2mm).

Average rainfall days in October - Mumbai, India
  • Average rainfall days in October: 3 days

The month with the highest number of rainy days is July (23.2 days).
The month with the least rainy days is March (0 days).

Average sea temperature in October - Mumbai, India
  • Average sea temperature in October: 28.8°C

The best month for swimming (with the highest average sea temperature) is June (30°C).
The coldest month (with the lowest average sea temperature) is February (24.9°C).

Average daylight in October / Average sunshine in October - Mumbai, India
  • Average daylight in October: 11.7h

The month with the longest days is June (Average daylight: 13.3h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in October: 7.7h

The month with the most sunshine is May (Average sunshine: 9.6h).
Months with the least sunshine are July and August (Average sunshine: 2.4).

Average UV index in October - Mumbai, India
  • Average UV index in October: 10

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).