Chennai
India
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Chennai, India

A staircase to the front entrance of the Ramakrishna Temple in Chennai, India
A staircase to the front entrance of the Ramakrishna Temple in Chennai, India
August, like July, is a hot rainy (monsoon) season month in Chennai, India, with average temperature fluctuating between 25.7°C (78.3°F) and 34.3°C (93.7°F).

Temperature

In Chennai, the average high-temperature is almost the same as in July - a hot 34.3°C (93.7°F). In Chennai, the average low-temperature is 25.7°C (78.3°F).

Heat index

In August, the average heat index is calculated to a blazing hot 45.8°C (114.4°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
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', 'feels like', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, wind, pregnancy, and differences in body mass, height, and shape affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. 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

The average relative humidity in Chennai is 66%.

Rainfall

In Chennai, during August, the rain falls for 8.5 days and regularly aggregates up to 140.4mm (5.5") of precipitation. Throughout the year, in Chennai, India, there are 59.1 rainfall days, and 1391.5mm (54.8") of precipitation is accumulated.

Sea temperature

In Chennai, India, in August, the average water temperature is 28.8°C (83.8°F).
Note: 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.

Daylight

The average length of the day in Chennai is 12.6h.

Sunshine

The average sunshine in August is 6.2h.

UV index

Months with the highest UV index are February through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from the exposure to the Sun's UV rays for the average person.
Note: In August, the average maximum UV index of 12 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in August in Chennai?

In Chennai, in August, the average high-temperature is 34.3°C (93.7°F), and the average low-temperature is 25.7°C (78.3°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines both air temperature and relative humidity, in August is appraised at 45.8°C (114.4°F).

What is the average humidity in August in Chennai?

The average relative humidity in August is 66%.

How much does it rain in Chennai in August?

In Chennai, India, in August, it is raining for 8.5 days, with typically 140.4mm (5.5") of accumulated precipitation.

What is the water temperature in August in Chennai?

In August, the average sea temperature in Chennai, India, is 28.8°C (83.8°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.

How many hours of daylight does Chennai have in August?

The average length of the day in August in Chennai, India, is 12.6h.

How long on average sun shines in August in Chennai?

The average sunshine in August in Chennai is 6.2h.

When is the highest UV index in Chennai?

February through September, with an average maximum UV index of 12, are months with the highest UV index in Chennai, India.

What is the UV index intensity in August in Chennai?

The average daily maximum UV index in August in Chennai, India, is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in August - Chennai, India
  • Average high temperature in August: 34.3°C

The warmest month (with the highest average high temperature) is June (36.9°C).
The month with the lowest average high temperature is December (28.5°C).

  • Average low temperature in August: 25.7°C

The month with the highest average low temperature is May (27.9°C).
The coldest month (with the lowest average low temperature) is January (20.9°C).

Average humidity in August - Chennai, India
  • Average humidity in August: 66%

The month with the highest relative humidity is November (78%).
The month with the lowest relative humidity is June (57%).

Average rainfall in August - Chennai, India
  • Average rainfall in August: 140.4mm

The wettest month (with the highest rainfall) is November (407.4mm).
The driest month (with the lowest rainfall) is February (2.2mm).

Average rainfall days in August - Chennai, India
  • Average rainfall days in August: 8.5 days

The month with the highest number of rainy days is November (11.7 days).
The month with the lowest number of rainy days is March (0.3 days).

Average sea temperature in August - Chennai, India
  • Average sea temperature in August: 28.8°C

The best month for swimming (with the highest average sea temperature) is May (29.5°C).
The coldest month (with the lowest average sea temperature) is January (26.8°C).

Average daylight in August / Average sunshine in August - Chennai, India
  • Average daylight in August: 12.6h

The month with the longest days is June (Average daylight: 12.9h).
The month with shortest days is December (Average daylight: 11.4h).

  • Average sunshine in August: 6.2h

The month with most sunshine is April (Average sunshine: 9.7h).
The month with least sunshine is July (Average sunshine: 6h).

Average UV index in August - Chennai, India
  • Average UV index in August: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).