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Contents
- The climate of Mumbai
- The best time to visit Mumbai
- The worst time to visit Mumbai
- Spring weather in Mumbai
- Summer weather in Mumbai
- Autumn weather in Mumbai
- Winter weather in Mumbai
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average humidity
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average UV index
The iconic ancient arch monument of the Gateway of Mumbai, India
The climate of Mumbai
Under the Köppen climate classification, the predominant climate of Mumbai, situated on India's western coast, is Aw, which signifies a tropical wet and dry or savanna climate. Average monthly temperatures range from about 30.7°C (87.3°F) to 33.5°C (92.3°F) with July's peak value at 33.5°C (92.3°F). The low point happens in January, where temperatures drop to an average low of 16.8°C (62.2°F). The climate shows relatively minor fluctuation, maintaining a fairly constant tropical nature throughout the year.
When discussing humidity, values remain chiefly consistent, reviling around 70% and 80%, with a yearly high of 86% found in July. Rainfall remains absent or low from November through April, with values not exceeding 1mm (0.04"). However, the patterns shift dramatically as the monsoon season begins in May, reaching its zenith in July with a staggering 800mm (31.5"). Correspondingly, the number of rainy days accumulates from 0.7 in May to 23.2 in July - the wettest month.
The sea temperature remains consistently warm year-round, fluctuating within a tight range from 24.9°C (76.8°F) to 30°C (86°F). A maximum day length of 13.3 hours happens in June, steadily decreasing thereafter. Sunshine hours vary across the year, from a low point of 2.4 hours in both July and August to a peak value of 9.6 hours in May. UV index is highest from March through September with a value of 12, indicating extreme potential for skin damage from the sun.
When discussing humidity, values remain chiefly consistent, reviling around 70% and 80%, with a yearly high of 86% found in July. Rainfall remains absent or low from November through April, with values not exceeding 1mm (0.04"). However, the patterns shift dramatically as the monsoon season begins in May, reaching its zenith in July with a staggering 800mm (31.5"). Correspondingly, the number of rainy days accumulates from 0.7 in May to 23.2 in July - the wettest month.
The sea temperature remains consistently warm year-round, fluctuating within a tight range from 24.9°C (76.8°F) to 30°C (86°F). A maximum day length of 13.3 hours happens in June, steadily decreasing thereafter. Sunshine hours vary across the year, from a low point of 2.4 hours in both July and August to a peak value of 9.6 hours in May. UV index is highest from March through September with a value of 12, indicating extreme potential for skin damage from the sun.
The best time to visit Mumbai
Given the notable variations in weather conditions throughout the year, the best time for a visit to Mumbai would be from November to April. During these months, temperatures are manageable, hovering between 30.4°C (86.7°F) to 33.5°C (92.3°F) during the day and falling to a more comfortable 16.8°C (62.2°F) to 24.3°C (75.7°F) at night. Rainfall is virtually nonexistent during these months, minimizing disruptions to outdoor activities and sightseeing.
The worst time to visit Mumbai
Contrarily, the months from June to September represent the least favorable period to explore Mumbai. Although temperatures remain relatively stabilised, ranging from 30°C (86°F) to 33.2°C (91.8°F) during the day and 24.7°C (76.5°F) to 26°C (78.8°F) at night, the monsoon season sets in. The relentless rains, peaking at 800mm (31.5") in July and accompanied by an enormous increase in the number of rainy days to as much as 23.2, could hamper outdoor activities and sightseeing.
Spring weather in Mumbai
Spring in Mumbai, from March to May, experiences increasing warmth, with temperatures rising from 31.2°C (88.2°F) to 33°C (91.4°F), and nighttime temperatures ascending from 17.8°C (64°F) to 26.3°C (79.3°F). Relative humidity increases to 70%. Though rainfall remains sparse, the season ends with a notable increase to 13mm (0.51") in May, signaling the start of the monsoon season.
Summer weather in Mumbai
Summer engulfs Mumbai from June to August. Daytime temperatures stay relatively stable, fluctuating only slightly from 33°C (91.4°F) to 32.1°C (89.8°F). However, nights become warmer, with temperatures varying between 26.3°C (79.3°F) and 26°C (78.8°F). Humidity reaches a yearly high of up to 86% in July and August, coinciding with the monsoon season's onset, resulting in extreme rainfall, peaking at 800mm (31.5") in July.
Autumn weather in Mumbai
Autumn rolls out in Mumbai from September through November. Daytime temperatures range from 30.4°C (86.7°F) in September to a higher 33.2°C (91.8°F) in November, while nights are cooler, with temperatures sliding from 24.3°C (75.7°F) to 20.9°C (69.6°F). Rainfall recedes dramatically from 312mm (12.28") in September to a mere 17mm (0.67") by November, signaling the end of the monsoon season.
Winter weather in Mumbai
In Mumbai, winter settles in during December to February. Day temperatures remain mostly constant from 33.5°C (92.3°F) in December to 30.7°C (87.3°F) in February, while night temperatures drop to cooler ranges between 18.6°C (65.5°F) and 26°C (78.8°F). Rainfall remains exceptionally low, entirely absent in January and February. Despite its tropical location, Mumbai does enjoy a mild winter, making it a pleasant season for visitors.
Weather in January
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. Weather in January »
Weather in February
The mild and pleasant weather extends into February, making it an excellent month for tourist activities in Mumbai. There's a slight increase in temperature from January - a high of 31.2°C (88.2°F) and low of 17.8°C (64°F) make for ideal day trips and beach tours. Weather in February »
Weather in March
March signifies the beginning of the summer season in Mumbai. There's a steady rise in mercury levels, leading to hot afternoons. The rise in temperature is relatively moderate, peaking at 32.5°C (90.5°F) while the low settles at 21°C (69.8°F). Weather in March »
Weather in April
April witnesses a significant rise in temperature in Mumbai. The city experiences scorching heat, with the maximum temperature reaching 33°C (91.4°F) and the minimum hovering around 23.9°C (75°F). It is advisable to avoid planning outdoor activities during daylight hours. Weather in April »
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"). Weather in May »
Weather in June
June in Mumbai is synonymous with the onset of the monsoon. It drastically reduces the heat accompanied by significant precipitation. The rain brings down the maximum temperature to 32.1°C (89.8°F) and brings a welcome relief from the scorching summer months. Weather in June »
Weather in July
The monsoon season is in full swing in July. The city is under a heavy downpour with showers peaking at 800mm (31.5"); a characteristic trait of this time. The temperatures remain stable with highs around 30°C (86°F) and lows just above 24.9°C (76.8°F). Weather in July »
Weather in August
August sees a receding monsoon with rainfall reducing to 530mm (20.87"), compared to July. Despite the reduction, the city still experiences heavy precipitation, keeping temperatures steady, neither too hot nor too cold. Locals and tourists can enjoy the lush landscapes that the rains leave behind. Weather in August »
Weather in September
September in Mumbai sees a definite decline in the monsoon activity. The rainfall further declines to 312mm (12.28"), and temperatures begin to climb back up, with highs around 30.4°C (86.7°F). Most of the city starts to dry up and regain its pre-monsoon charm. Weather in September »
Weather in October
October is when the monsoon completely recedes making way for delightful weather. A major drop in rainfall levels to 56mm (2.2") and fluctuating temperatures with a high of 33.2°C (91.8°F) and low of 23.4°C (74.1°F) herald the autumn season in Mumbai. Weather in October »
Weather in November
November introduces a calm and soothing ambiance within the town. The returning heat accompanied by a small rainfall level of 17mm (0.67") adds a touch of coolness, encouraging people to lounge outdoors. The favourable November weather prompts many outdoor events and social gatherings. Weather in November »
Weather in December
December marks the onset of the winter season in Mumbai. The drop in temperature to a low of 18.6°C (65.5°F) indicates a cozy chill in the air. The city experiences minimal rainfall of 5mm (0.2") making it a suitable time for vacationers and locals to delight in outdoor recreational activities. Weather in December »
[Resources]Frequently asked questions
How many days does it rain in Mumbai?
Throughout the year, there are 78.9 rainfall days, and 2258mm (88.9") of precipitation is accumulated.
What is the least humid month in Mumbai?
With an average relative humidity of 67%, February is the least humid month in Mumbai.
What month is the sea coldest in Mumbai?
February is the month with the coldest seawater, with an average sea temperature of 24.9°C (76.8°F).
What is the driest month in Mumbai?
March is the month with the least rainfall in Mumbai, with 0mm (0") of accumulated precipitation.
When is the highest UV index in Mumbai?
The months with the highest UV index in Mumbai, India, are March through September, with an average maximum UV index of 12.
What month has the most sunshine in Mumbai?
The month with the most sunshine is May, with an average of 9.6h of sunshine.
When is the sea warmest in Mumbai?
With an average sea temperature of 30°C (86°F), June is the month with the warmest seawater in Mumbai.
When are the longest days in Mumbai?
With an average of 13h and 18min of daylight, June has the longest days of the year.
What are the most humid months in Mumbai?
July and August, with an average relative humidity of 86%, are most humid months.
What is the rainiest month in Mumbai?
The month with the most rainfall in Mumbai, India, is July, when the rain falls for 23.2 days and typically aggregates up to 800mm (31.5") of precipitation.
What are the months with the least sunshine in Mumbai?
July and August, with an average of 2.4h of sunshine, are months with the least sunshine in Mumbai.
What time of the year is the coldest in Mumbai?
Mumbai's temperature records reveal August as the coldest month, marked by average highs of 29.6°C (85.3°F) and lows of 24.7°C (76.5°F).
What time of the year is the hottest in Mumbai?
With average high and low temperatures of 33.5°C (92.3°F) and 20.9°C (69.6°F) respectively, November is Mumbai's warmest month.
What is the month with the shortest days in Mumbai?
December has the shortest days of the year in Mumbai, with an average of 11h and 0min of daylight.
Is there Daylight Saving Time (DST) in Mumbai?
Mumbai, India, does not observe Daylight Saving Time (DST). IST timezone is used over the entire year.
What is the month with the lowest UV index in Mumbai?
December is the month with the lowest UV index in Mumbai, India, with an average maximum UV index of 7.
Average temperature
Mumbai, India
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).
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
Mumbai, India
The months with the highest relative humidity are July and August (86%).
The month with the lowest relative humidity is February (67%).
Average rainfall
Mumbai, India
- Average rainfall in January:
0.6mm - Average rainfall in February:
1.3mm - Average rainfall in March:
0.2mm - Average rainfall in April:
0.7mm - Average rainfall in May:
12.5mm - Average rainfall in June:
523.1mm
- Average rainfall in July:
799.7mm - Average rainfall in August:
529.7mm - Average rainfall in September:
312.3mm - Average rainfall in October:
55.8mm - Average rainfall in November:
16.8mm - Average rainfall in December:
5.3mm
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
Mumbai, India
- Average rainfall days in January:
0.1 days - Average rainfall days in February:
0.1 days - Average rainfall days in March:
0 days - Average rainfall days in April:
0.1 days - Average rainfall days in May:
0.7 days - Average rainfall days in June:
14.5 days
- Average rainfall days in July:
23.2 days - Average rainfall days in August:
21.4 days - Average rainfall days in September:
14.4 days - Average rainfall days in October:
3 days - Average rainfall days in November:
1 days - Average rainfall days in December:
0.4 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
Mumbai, India
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 / Average sunshine
Mumbai, India
- Average daylight in January:
11h and 1min - Average daylight in February:
11h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 4min - Average daylight in May:
13h and 0min - Average daylight in June:
13h and 2min
- Average daylight in July:
13h and 1min - Average daylight in August:
12h and 5min - Average daylight in September:
12h and 1min - Average daylight in October:
11h and 4min - Average daylight in November:
11h and 1min - Average daylight in December:
11h 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 January:
8h and 4min - Average sunshine in February:
9h and 1min - Average sunshine in March:
8h and 5min - Average sunshine in April:
9h and 3min - Average sunshine in May:
9h and 4min - Average sunshine in June:
5h and 0min
- Average sunshine in July:
2h and 2min - Average sunshine in August:
2h and 2min - Average sunshine in September:
5h and 3min - Average sunshine in October:
7h and 4min - Average sunshine in November:
8h and 1min - Average sunshine in December:
8h and 1min
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).
Average UV index
Mumbai, India
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).
Mumbai, India
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