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
With the start of September, Homagama measures an average high-temperature of a still moderately hot 27.5°C (81.5°F), not significantly differing from August's 27.5°C (81.5°F). In Homagama, an average nighttime temperature of 20.9°C (69.6°F) is expected during September.Heat index
Throughout September, the heat index is evaluated at a hot 32°C (89.6°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.Heat index evaluations are typically in the context of light winds and shaded environments. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In Homagama, the average relative humidity in September is 86%.Rainfall
In Homagama, during September, the rain falls for 25.8 days and regularly aggregates up to 178mm (7.01") of precipitation. Throughout the year, in Homagama, there are 317.3 rainfall days, and 2422mm (95.35") of precipitation is accumulated.Daylight
In Homagama, Sri Lanka, the average length of the day in September is 12h and 10min.On the first day of September, sunrise is at 06:02 and sunset at 18:17. On the last day of the month, sunrise is at 05:57 and sunset at 18:01 +0530.
Sunshine
In September, the average sunshine in Homagama, Sri Lanka, is 7.5h.UV index
September and October, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 5 during September leads to these advisories:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What are September temperatures in Homagama?
What is the average humidity in September in Homagama?
How many days does it rain in September in Homagama?
How many hours of daylight does Homagama have in September?
What time are sunrise and sunset in September in Homagama?
How many hours of sunshine does Homagama have in September?
When is the lowest UV index in Homagama?
What is the UV index reading in September in Homagama?
Average temperature in September
Homagama, Sri Lanka
- Average high temperature in September: 27.5°C
The warmest month (with the highest average high temperature) is March (31.1°C).
The months with the lowest average high temperature are June and July (27.3°C).
- Average low temperature in September: 20.9°C
The months with the highest average low temperature are May and June (21.8°C).
The coldest month (with the lowest average low temperature) is February (18.7°C).
Average pressure in September
Homagama, Sri Lanka
- Average pressure in September: 1009.8mbar
The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed in September
Homagama, Sri Lanka
- Average wind speed in September: 7.4km/h
The windiest month (with the highest average wind speed) is July (8.8km/h).
The calmest months (with the lowest average wind speed) are February and March (3.9km/h).
Average humidity in September
Homagama, Sri Lanka
- Average humidity in September: 86%
The months with the highest relative humidity are May and June (88%).
The months with the lowest relative humidity are January and February (80%).
Average rainfall in September
Homagama, Sri Lanka
- Average rainfall in September: 178mm
The wettest month (with the highest rainfall) is October (357mm).
The driest month (with the least rainfall) is January (85mm).
Average rainfall days in September
Homagama, Sri Lanka
- Average rainfall days in September: 25.8 days
The month with the highest number of rainy days is May (29.8 days).
The month with the least rainy days is January (18.9 days).
Average daylight in September /
Average sunshine in September
Homagama, Sri Lanka
- Average daylight in September: 12h and 1min
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: 7h and 3min
The month with the most sunshine is April (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Homagama, Sri Lanka
- Average sunshine days in September: 1.4 days
The month with the most sunshine days is January (9.2 days).
The month with the least sunshine days is April (0.2 days).
Average UV index in September
Homagama, Sri Lanka
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, November and December (UV index 6).
The months with the lowest UV index are September and October (UV index 5).
Average cloud cover in September
Homagama, Sri Lanka
- Average cloud cover in September: 59
The month with the most cloud cover is June (Cloud cover 65).
The month with the least cloud cover is January (Cloud cover 33).
Average visibility in September
Homagama, Sri Lanka
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, June, July, August and December (8km).
The months with the lowest visibility are April, May, September, October and November (7km).
Homagama, Sri Lanka
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