September weather forecast
Vellore, India

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Weather in September

The last month of the rainy (monsoon) season, September, is another hot month in Vellore, India, with an average temperature fluctuating between 33°C (91.4°F) and 23.7°C (74.7°F).

Temperature

Vellore notes an average high-temperature of a still hot 33°C (91.4°F) in September, displaying minor variation from August. In September, Vellore experiences a temperature dip to an average of 23.7°C (74.7°F) at night.

Heat index

In September, the average heat index is computed to be a blisteringly hot 43°C (109.4°F). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
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. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In September, the average relative humidity is 69%.

Rainfall

In September, in Vellore, the rain falls for 22.6 days. Throughout September, 91mm (3.58") of precipitation is accumulated. In Vellore, India, during the entire year, the rain falls for 167.6 days and collects up to 620mm (24.41") of precipitation.

Daylight

In Vellore, the average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 6:02 am and sunset at 6:24 pm. On the last day of September, in Vellore, sunrise is at 6:02 am and sunset at 6:04 pm IST.

Sunshine

In Vellore, the average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 7 in September leads to these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

How hot does it get in Vellore in September?

The average high-temperature, in September, in Vellore, is 33°C (91.4°F), while the average low-temperature is 23.7°C (74.7°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 43°C (109.4°F).

What is the average humidity in September in Vellore?

In Vellore, India, the average relative humidity in September is 69%.

How many days does it rain in September in Vellore?

In September, the rain falls for 22.6 days. Throughout September, 91mm (3.58") of precipitation is accumulated.

How many hours of daylight does Vellore have in September?

The average day length in September in Vellore, India, is 12h and 12min.

What time are sunrise and sunset in September in Vellore?

On the first day of September in Vellore, sunrise is at 6:02 am and sunset at 6:24 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 6:04 pm IST.

How many hours of sunshine does Vellore have in September?

The average sunshine duration in September in Vellore is 8.6h.

How high is the UV index in September in Vellore?

In September, the average daily maximum UV index in Vellore is 7. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.

Average temperature in September
Vellore, India

Average temperature in September - Vellore, India
  • Average high temperature in September: 33°C

The warmest month (with the highest average high temperature) is May (39.4°C).
The month with the lowest average high temperature is December (28.2°C).

  • Average low temperature in September: 23.7°C

The month with the highest average low temperature is May (27.8°C).
The coldest month (with the lowest average low temperature) is January (17.4°C).

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Average pressure in September
Vellore, India

Average pressure in September - Vellore, India
  • Average pressure in September: 1007.5mbar

The month with the highest atmospheric pressure is January (1014.1mbar).
The month with the lowest atmospheric pressure is June (1005.1mbar).

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Average wind speed in September
Vellore, India

Average wind speed in September - Vellore, India
  • Average wind speed in September: 9.4km/h

The windiest month (with the highest average wind speed) is July (14.9km/h).
The calmest month (with the lowest average wind speed) is October (7.1km/h).

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Average humidity in September
Vellore, India

Average humidity in September - Vellore, India
  • Average humidity in September: 69%

The month with the highest relative humidity is November (79%).
The month with the lowest relative humidity is May (47%).

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Average rainfall in September
Vellore, India

Average rainfall in September - Vellore, India
  • Average rainfall in September: 91mm

The wettest month (with the highest rainfall) is October (129mm).
The driest month (with the least rainfall) is February (5mm).

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Average rainfall days in September
Vellore, India

Average rainfall days in September - Vellore, India
  • Average rainfall days in September: 22.6 days

The month with the highest number of rainy days is October (23.2 days).
The month with the least rainy days is February (3.8 days).

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Average daylight in September /
Average sunshine in September
Vellore, India

Average daylight in September / Average sunshine in September - Vellore, India
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is May (Average sunshine: 11h and 42min).
The month with the least sunshine is November (Average sunshine: 5h and 48min).

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Average sunshine days in September
Vellore, India

Average sunshine days in September - Vellore, India
  • Average sunshine days in September: 5.6 days

The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is September (5.6 days).

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Average UV index in September
Vellore, India

Average UV index in September - Vellore, India
  • Average UV index in September: 7

The months with the highest UV index are March, April, May and June (UV index 8).
The months with the lowest UV index are January, October, November and December (UV index 6).

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Average cloud cover in September
Vellore, India

Average cloud cover in September - Vellore, India
  • Average cloud cover in September: 38

The month with the most cloud cover is November (Cloud cover 41).
The months with the least cloud cover are March and April (Cloud cover 15).

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Average visibility in September
Vellore, India

Average visibility in September - Vellore, India
  • Average visibility in September: 10km

The months with the highest visibility are March, April, May, June, July, August and September (10km).
The months with the lowest visibility are November and December (8km).

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Vellore, India

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