September weather forecastKaraikal, India
September
Weather in September
The last month of the rainy (monsoon) season, September, is also a hot month in Karaikal, India, with an average temperature fluctuating between 31.7°C (89.1°F) and 27°C (80.6°F).Temperature
The average high-temperature in September, at a still tropical 31.7°C (89.1°F), reveals a modest deviation from August's 32.1°C (89.8°F). Karaikal upholds a consistent average temperature of 27°C (80.6°F) throughout the nights of September.Heat index
For most parts of September, the heat index is calculated to be a scorching 41°C (105.8°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In September, the average relative humidity in Karaikal, India, is 73%.Rainfall
In September, the rain falls for 21.6 days. Throughout September, 84mm (3.31") of precipitation is accumulated. In Karaikal, during the entire year, the rain falls for 166.7 days and collects up to 891mm (35.08") of precipitation.Daylight
In September, the average length of the day is 12h and 11min.On the first day of September in Karaikal, sunrise is at 6:00 am and sunset at 6:20 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 6:01 pm IST.
Sunshine
In September, the average sunshine is 9.2h.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 unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 7 during September leads to these advisories:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Karaikal, India
- Average high temperature in September: 31.7°C
The warmest month (with the highest average high temperature) is May (34.3°C).
The month with the lowest average high temperature is January (27°C).
- Average low temperature in September: 27°C
The month with the highest average low temperature is May (29°C).
The coldest month (with the lowest average low temperature) is January (24°C).
Average pressure in September
Karaikal, India
- Average pressure in September: 1007.2mbar
The month with the highest atmospheric pressure is January (1013.1mbar).
The month with the lowest atmospheric pressure is June (1005.1mbar).
Average wind speed in September
Karaikal, India
- Average wind speed in September: 17km/h
The windiest month (with the highest average wind speed) is June (21.4km/h).
The calmest month (with the lowest average wind speed) is October (14.3km/h).
Average humidity in September
Karaikal, India
- Average humidity in September: 73%
The months with the highest relative humidity are November and December (79%).
The month with the lowest relative humidity is June (65%).
Average rainfall in September
Karaikal, India
- Average rainfall in September: 84mm
The wettest month (with the highest rainfall) is November (226mm).
The driest month (with the least rainfall) is February (11mm).
Average rainfall days in September
Karaikal, India
- Average rainfall days in September: 21.6 days
The month with the highest number of rainy days is October (24.2 days).
The month with the least rainy days is February (5.3 days).
Average daylight in September /
Average sunshine in September
Karaikal, India
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is May (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Karaikal, India
- Average sunshine days in September: 7.4 days
The month with the most sunshine days is March (23.3 days).
The month with the least sunshine days is October (6 days).
Average UV index in September
Karaikal, India
- Average UV index in September: 7
The months with the highest UV index are April, May and June (UV index 8).
The month with the lowest UV index is October (UV index 6).
Average cloud cover in September
Karaikal, India
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is March (Cloud cover 15).
Average visibility in September
Karaikal, India
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
