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
The coldest period tends to be September, when average temperatures fluctuate between a high of 28.5°C (83.3°F) and a low of 26°C (78.8°F).Heat index
The heat index value for September is evaluated at a tropical 34°C (93.2°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
The months with the highest humidity in Ahangama are June and September, with an average relative humidity of 81%.Rainfall
In Ahangama, Sri Lanka, in September, during 25 rainfall days, 207mm (8.15") of precipitation is typically accumulated. In Ahangama, during the entire year, the rain falls for 292.5 days and collects up to 1797mm (70.75") of precipitation.Daylight
The average length of the day in September is 12h and 9min.On the first day of September in Ahangama, sunrise is at 06:01 and sunset at 18:15. On the last day of the month, sunrise is at 05:56 and sunset at 18:00 +0530.
Sunshine
In September, the average sunshine in Ahangama, Sri Lanka, is 8.7h.UV index
May, June and September, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What month is the coldest in Ahangama?
How hot does it get in Ahangama in September?
What is the most humid month in Ahangama?
What is the average humidity in September in Ahangama?
How many days does it rain in September in Ahangama?
How many hours of daylight does Ahangama have in September?
What time are sunrise and sunset in September in Ahangama?
How long on average sun shines in September in Ahangama?
What is the month with the lowest UV index in Ahangama?
What is the UV index intensity in September in Ahangama?
Average temperature in September
Ahangama, Sri Lanka
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is April (30.3°C).
The month with the lowest average high temperature is September (28.5°C).
- Average low temperature in September: 26°C
The month with the highest average low temperature is May (27.1°C).
The coldest month (with the lowest average low temperature) is January (24.1°C).
Average pressure in September
Ahangama, Sri Lanka
- Average pressure in September: 1010.2mbar
The month with the highest atmospheric pressure is January (1011.3mbar).
The month with the lowest atmospheric pressure is May (1009mbar).
Average wind speed in September
Ahangama, Sri Lanka
- Average wind speed in September: 18.6km/h
The windiest month (with the highest average wind speed) is June (21.7km/h).
The calmest month (with the lowest average wind speed) is January (8.7km/h).
Average humidity in September
Ahangama, Sri Lanka
- Average humidity in September: 81%
The months with the highest relative humidity are June and September (81%).
The months with the lowest relative humidity are January, February and March (77%).
Average rainfall in September
Ahangama, Sri Lanka
- Average rainfall in September: 207mm
The wettest month (with the highest rainfall) is May (263mm).
The driest month (with the least rainfall) is January (37mm).
Average rainfall days in September
Ahangama, Sri Lanka
- Average rainfall days in September: 25 days
The months with the highest number of rainy days are June and August (28.3 days).
The month with the least rainy days is February (15.4 days).
Average daylight in September /
Average sunshine in September
Ahangama, 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 48min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is April (Average sunshine: 9h and 24min).
The month with the least sunshine is December (Average sunshine: 7h and 12min).
Average sunshine days in September
Ahangama, Sri Lanka
- Average sunshine days in September: 1.3 days
The month with the most sunshine days is January (12 days).
The month with the least sunshine days is June (0.3 days).
Average UV index in September
Ahangama, Sri Lanka
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, July, August, October, November and December (UV index 7).
The months with the lowest UV index are May, June and September (UV index 6).
Average cloud cover in September
Ahangama, Sri Lanka
- Average cloud cover in September: 49
The month with the most cloud cover is June (Cloud cover 51).
The month with the least cloud cover is February (Cloud cover 25).
Average visibility in September
Ahangama, Sri Lanka
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, June, July and December (10km).
The months with the lowest visibility are May, August, September, October and November (9km).
Ahangama, Sri Lanka
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