September weather forecastThirukkovil, Sri Lanka
September
Weather in September
September in Thirukkovil is characterized by a high temperature of 31.8°C (89.2°F), marking the transition towards lower temperatures. A remarkable weather phenomenon this month is the increase in rainfall to 81mm (3.19") from the previous month's numbers. Despite this increased rainfall, the city experiences ample daylight and sunshine for outdoor activities and sightseeing tours. Moreover, the month witnesses a decrease in wind speeds, contributing to a quieter ambiance. The changing pattern of humidity offers a different texture to the city's air quality, lending a fresh feel to the surroundings.Temperature
The arrival of September denotes a barely perceptible change in the average high-temperatures to a still hot 31.8°C (89.2°F) from August's 32.3°C (90.1°F). In September, the nighttime temperature lowers to an average of 25.7°C (78.3°F).Heat index
The heat index for September is calculated to be a scorching 41°C (105.8°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.Heat index determinations are made taking into account the shade and light air movements. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
In Thirukkovil, the average relative humidity in September is 72%.Rainfall
In September, the rain falls for 22 days. Throughout September, 81mm (3.19") of precipitation is accumulated. Throughout the year, there are 237.8 rainfall days, and 1259mm (49.57") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 10min.On the first day of the month, sunrise is at 05:55 and sunset at 18:10. On the last day of September, sunrise is at 05:50 and sunset at 17:54 +0530.
Sunshine
The average sunshine in September is 10.7h.UV index
The months with the highest UV index are January through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 7 transforms into these recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Thirukkovil, Sri Lanka
- Average high temperature in September: 31.8°C
The warmest month (with the highest average high temperature) is June (33°C).
The month with the lowest average high temperature is January (27.3°C).
- Average low temperature in September: 25.7°C
The month with the highest average low temperature is May (26.6°C).
The coldest month (with the lowest average low temperature) is January (24°C).
Average pressure in September
Thirukkovil, Sri Lanka
- Average pressure in September: 1008.8mbar
The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1007.3mbar).
Average wind speed in September
Thirukkovil, Sri Lanka
- Average wind speed in September: 9.1km/h
The windiest month (with the highest average wind speed) is January (13.9km/h).
The calmest month (with the lowest average wind speed) is September (9.1km/h).
Average humidity in September
Thirukkovil, Sri Lanka
- Average humidity in September: 72%
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are June and July (68%).
Average rainfall in September
Thirukkovil, Sri Lanka
- Average rainfall in September: 81mm
The wettest month (with the highest rainfall) is December (272mm).
The driest month (with the least rainfall) is June (30mm).
Average rainfall days in September
Thirukkovil, Sri Lanka
- Average rainfall days in September: 22 days
The months with the highest number of rainy days are October and November (25.5 days).
The month with the least rainy days is March (12.8 days).
Average daylight in September /
Average sunshine in September
Thirukkovil, Sri Lanka
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in September: 10h and 42min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Thirukkovil, Sri Lanka
- Average sunshine days in September: 5.8 days
The month with the most sunshine days is March (15.5 days).
The month with the least sunshine days is November (3.2 days).
Average UV index in September
Thirukkovil, Sri Lanka
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are November and December (UV index 6).
Average cloud cover in September
Thirukkovil, Sri Lanka
- Average cloud cover in September: 28
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is April (Cloud cover 22).
Average visibility in September
Thirukkovil, Sri Lanka
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are November and December (9km).





