January 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

Weather in January

January, the same as December, in Mumbai, India, is a hot winter month, with temperature in the range of an average high of 30.7°C (87.3°F) and an average low of 16.8°C (62.2°F).
An excellent water temperature of 25.2°C (77.4°F) and only 0.1 rainfall days, with 0.6mm (0.02") of accumulated rainfall, makes January a prime for swimming and other water activities.

Temperature

In Mumbai, the average high-temperature is relatively the same as in December - a still tropical 30.7°C (87.3°F). In January, the average low-temperature is 16.8°C (62.2°F).

Heat index

The average heat index in January is calculated to be a torrid 36.5°C (97.7°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'feels like', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like differences in body mass, height, and shape, pregnancy, metabolic differences, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. 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 surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Mumbai, the average relative humidity in January is 69%.

Rainfall

In January, in Mumbai, India, the rain falls for 0.1 days. Throughout January, 0.6mm (0.02") of precipitation is accumulated. In Mumbai, during the entire year, the rain falls for 78.9 days and collects up to 2258mm (88.9") of precipitation.

Sea temperature

In Mumbai, India, the average seawater temperature is 25.2°C (77.4°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 Mumbai, the average length of the day in January is 11.1h.

Sunshine

The average sunshine in Mumbai, India, is 8.7h.

UV index

In January, the average daily maximum UV index is 8. A UV Index value of 8 to 10 symbolizes a very high health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 8 transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the temperature in January in Mumbai?

In January, in Mumbai, the average high-temperature is 30.7°C (87.3°F), and the average low-temperature is 16.8°C (62.2°F). In January, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 36.5°C (97.7°F).

What is the average humidity in January in Mumbai?

In Mumbai, India, the average relative humidity in January is 69%.

How many days does it rain in January in Mumbai?

In January, the rain falls for 0.1 days. Throughout January, 0.6mm (0.02") of precipitation is accumulated.

What is the sea water temperature in January in Mumbai?

In Mumbai, India, in January, the average water temperature is 25.2°C (77.4°F). 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.

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

In January, the average length of the day in Mumbai, India, is 11.1h.

How long on average sun shines in January in Mumbai?

In January, the average sunshine is 8.7h.

What is the UV index intensity in January in Mumbai?

In Mumbai, the average daily maximum UV index in January is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to the UV radiation.

Average temperature in January
Mumbai, India

Average temperature in January - Mumbai, India
  • Average high temperature in January: 30.7°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 January: 16.8°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 January
Mumbai, India

Average humidity in January - Mumbai, India
  • Average humidity in January: 69%

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 January
Mumbai, India

Average rainfall in January - Mumbai, India
  • Average rainfall in January: 0.6mm

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 January
Mumbai, India

Average rainfall days in January - Mumbai, India
  • Average rainfall days in January: 0.1 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 January
Mumbai, India

Average sea temperature in January - Mumbai, India
  • Average sea temperature in January: 25.2°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 January /
Average sunshine in January
Mumbai, India

Average daylight in January / Average sunshine in January - Mumbai, India
  • Average daylight in January: 11.1h

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 January: 8.7h

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).

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Average UV index in January
Mumbai, India

Average UV index in January - Mumbai, India
  • Average UV index in January: 8

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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