May weather forecast
Mumbai, India

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The iconic ancient arch monument of the Gateway of Mumbai, India
The iconic ancient arch monument of the Gateway of Mumbai, India

Weather in May

May is the summit of the Mumbai summer with the temperature high at 33.3°C (91.9°F) and a low at 26.3°C (79.3°F). Amidst the intense heat, the city sees the first murmurs of the impending monsoon season with an increased rainfall level of 13mm (0.51"). It may still not warrant an umbrella but does bring much-needed respite from the heat. Tourists are advised to pack light clothing and sunshades. Despite the high temperatures, evenings tend to be cooler, making way for relaxed coastal walks.

Temperature

The ushering in of May in Mumbai brings an average high-temperature of a still hot 33.3°C (91.9°F), closely mirroring the 33°C (91.4°F) of April. During May, Mumbai observes a consistent average nighttime temperature of 26.3°C (79.3°F).

Heat index

For most parts of May, the heat index is appraised at a blistering 44°C (111.2°F). Forewarned: Heat cramps and heat exhaustion are anticipated. Ongoing physical activity increases the likelihood of heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in May in Mumbai is 70%.

Rainfall

In Mumbai, in May, it is raining for 0.7 days, with typically 13mm (0.51") of accumulated precipitation. Throughout the year, in Mumbai, there are 78.9 rainfall days, and 2258mm (88.9") of precipitation is accumulated.

Sea temperature

In Mumbai, the average seawater temperature in May is 29.4°C (84.9°F).
Note: Between 25°C (77°F) and 29°C (84.2°F), water temperature is typically considered very warm and pleasurable by everyone. Water activities at these temperatures are enjoyable for extended periods without discomfort.

Daylight

The average length of the day in May in Mumbai is 13h and 2min.
On the first day of the month, sunrise is at 6:10 am and sunset at 7:00 pm. On the last day of May, sunrise is at 6:00 am and sunset at 7:12 pm IST.

Sunshine

May has the most sunshine of the year, with an average of 9.6h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Mumbai. A UV Index reading of 11, and higher, represents an extreme threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In May, the average maximum UV index of 12 translates into the following recommendations:
Put into effect every precaution of importance, unprotected skin and eyes may get burns swiftly. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Sunscreen with a sun protection factor of no less than 30 should be used liberally and reapplied frequently on overcast days, including after every swim or outdoor activity. Be mindful! Sand and water reflections can up the Sun's UV exposure.
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Frequently asked questions

How hot does it get in Mumbai in May?

The high-temperature, in May, in Mumbai, is 33.3°C (91.9°F), while the low-temperature averages to 26.3°C (79.3°F). In May, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is appraised at 44°C (111.2°F).

What is the average humidity in May in Mumbai?

In May, the average relative humidity in Mumbai is 70%.

How many days does it rain in May in Mumbai?

In Mumbai, during May, the rain falls for 0.7 days and regularly aggregates up to 13mm (0.51") of precipitation.

How warm is the water in May in Mumbai?

In Mumbai, in May, the average water temperature is 29.4°C (84.9°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Mumbai have in May?

In May, the average day length in Mumbai is 13h and 2min.

What time are sunrise and sunset in May in Mumbai?

On the first day of May in Mumbai, sunrise is at 6:10 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 7:12 pm IST.

What month has the most sunshine in Mumbai?

The month with the most sunshine in Mumbai is May, with an average of 9.6h of sunshine.

How long on average sun shines in May in Mumbai?

The average sunshine duration in May in Mumbai, India, is 9.6h.

What is the month with the highest UV index in Mumbai?

The months with the highest UV index in Mumbai are March through September, with an average maximum UV index of 12.

What is the UV index reading in May in Mumbai?

In May, the average daily maximum UV index in Mumbai, India, is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
Mumbai, India

Average temperature in May - Mumbai, India
  • Average high temperature in May: 33.3°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 May: 26.3°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).

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Average humidity in May
Mumbai, India

Average humidity in May - Mumbai, India
  • Average humidity in May: 70%

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

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Average rainfall in May
Mumbai, India

Average rainfall in May - Mumbai, India
  • Average rainfall in May: 12.5mm

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

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Average rainfall days in May
Mumbai, India

Average rainfall days in May - Mumbai, India
  • Average rainfall days in May: 0.7 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).

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Average sea temperature in May
Mumbai, India

Average sea temperature in May - Mumbai, India
  • Average sea temperature in May: 29.4°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).

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Average daylight in May /
Average sunshine in May
Mumbai, India

Average daylight in May / Average sunshine in May - Mumbai, India
  • Average daylight in May: 13h and 0min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in May: 9h and 4min

The month with the most sunshine is May (Average sunshine: 9h and 36min).
The months with the least sunshine are July and August (Average sunshine: 2h and 24min).

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Average UV index in May
Mumbai, India

Average UV index in May - Mumbai, India
  • Average UV index in May: 12

The 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).

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Mumbai, India

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