January weather forecast
Mumbai, India

January ushers in the new year with mild weather conditions in Mumbai. High temperatures remain relatively low with averages recorded at 30.7°C (87.3°F). The city barely perceives any rainfall, keeping the humidity manageable. Keep in mind that nights can be chilly, so pack a light sweater when planning outdoor activities. As the month progresses, there's a slight rise in temperature hinting at the onset of summer.

Temperature

The average high-temperature in Mumbai, India, for January is a still hot 30.7°C (87.3°F), closely aligning with the temperature of the preceding month. Mumbai's daily high temperature significantly diverges from the consistently recorded temperature low averaging an enjoyable 16.8°C (62.2°F) in January.

Heat index

Throughout January, the heat index is appraised at a torrid 37°C (98.6°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

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

Rainfall

In Mumbai, in January, during 0.1 rainfall days, 1mm (0.04") of precipitation is typically 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 January, the average sea temperature in Mumbai, India, is 25.2°C (77.4°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.

Daylight

In Mumbai, the average length of the day in January is 11h and 8min.
On the first day of January in Mumbai, sunrise is at 7:11 am and sunset at 6:11 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:30 pm IST.

Sunshine

In Mumbai, the average sunshine in January is 8.7h.

UV index

In January, the average daily maximum UV index in Mumbai is 8. A UV Index reading of 8 to 10 represents a very high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 8 in January translates into this advice:
Skin and eyes are vulnerable without protection. Ensure you always take precautions. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.