Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September is marked by an average high-temperature of a still warm 29.9°C (85.8°F), almost identical to the preceding month. Vankalai records a negligible downturn from daytime temperatures, averaging a low of 27°C (80.6°F) in the month of September.Heat index
The heat index in September is calculated to be a torrid 37°C (98.6°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.Heat index determinations are made taking into account the shade and light air movements. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular significance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In Vankalai, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 15.5 days. Throughout September, 45mm (1.77") of precipitation is accumulated. In Vankalai, during the entire year, the rain falls for 181.2 days and collects up to 849mm (33.43") of precipitation.Daylight
In Vankalai, the average length of the day in September is 12h and 10min.On the first day of September, sunrise is at 06:01 and sunset at 18:18. On the last day of the month, sunrise is at 05:58 and sunset at 18:01 +0530.
Sunshine
In September, the average sunshine is 9.7h.UV index
January through October and December, with an average maximum UV index of 7, are months with the highest UV index in Vankalai. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 7 in September suggests the following recommendations:
Deter overexposure. Protecting against the sun's effects is essential. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
How hot is September in Vankalai?
What is the average humidity in September in Vankalai?
How many days does it rain in September in Vankalai?
What is the average length of the day in September in Vankalai?
When is the sunrise / sunset in September in Vankalai?
How many hours of sunshine does Vankalai have in September?
What are the months with the highest UV index in Vankalai?
How high is the UV index in September in Vankalai?
Average temperature in September
Vankalai, Sri Lanka
- Average high temperature in September: 29.9°C
The warmest month (with the highest average high temperature) is April (31.4°C).
The month with the lowest average high temperature is January (28.4°C).
- Average low temperature in September: 27°C
The month with the highest average low temperature is May (28.1°C).
The coldest month (with the lowest average low temperature) is February (23.9°C).
Average pressure in September
Vankalai, Sri Lanka
- Average pressure in September: 1008mbar
The month with the highest atmospheric pressure is January (1012.2mbar).
The month with the lowest atmospheric pressure is June (1006.5mbar).
Average wind speed in September
Vankalai, Sri Lanka
- Average wind speed in September: 27.1km/h
The windiest month (with the highest average wind speed) is June (32.4km/h).
The calmest month (with the lowest average wind speed) is April (15.4km/h).
Average humidity in September
Vankalai, Sri Lanka
- Average humidity in September: 77%
The months with the highest relative humidity are November and December (79%).
The month with the lowest relative humidity is March (75%).
Average rainfall in September
Vankalai, Sri Lanka
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is November (207mm).
The driest month (with the least rainfall) is June (28mm).
Average rainfall days in September
Vankalai, Sri Lanka
- Average rainfall days in September: 15.5 days
The months with the highest number of rainy days are October and November (23.8 days).
The month with the least rainy days is February (9.1 days).
Average daylight in September /
Average sunshine in September
Vankalai, Sri Lanka
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The months with the least sunshine are November and December (Average sunshine: 5h and 42min).
Average sunshine days in September
Vankalai, Sri Lanka
- Average sunshine days in September: 11.4 days
The month with the most sunshine days is March (19 days).
The month with the least sunshine days is November (4.4 days).
Average UV index in September
Vankalai, 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, October and December (UV index 7).
The month with the lowest UV index is November (UV index 6).
Average cloud cover in September
Vankalai, Sri Lanka
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is March (Cloud cover 18).
Average visibility in September
Vankalai, Sri Lanka
- 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).
Vankalai, Sri Lanka
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