September weather forecast and climate
Anuradhapura, Sri Lanka

Weather in September

September, the first month of the autumn, in Anuradhapura, is still a hot month, with average temperature varying between 32.6°C (90.7°F) and 24.8°C (76.6°F).

Temperature

In September, the average high-temperature is practically the same as in August - a still tropical 32.6°C (90.7°F). In Anuradhapura, the average low-temperature is 24.8°C (76.6°F).

Heat index

The average heat index is computed to be an extremely hot 42.6°C (108.7°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, wind, metabolic differences, and clothing affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

Months with the lowest humidity are July through September, with an average relative humidity of 71%.

Rainfall

In September, the rain falls for 14 days. Throughout September, 57mm (2.24") of precipitation is accumulated. In Anuradhapura, Sri Lanka, during the entire year, the rain falls for 199.1 days and collects up to 893mm (35.16") of precipitation.

Daylight

In Anuradhapura, the average length of the day in September is 12.2h.

Sunshine

The average sunshine in September is 9.6h.

UV index

February through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Anuradhapura?

In Anuradhapura, in September, the average high-temperature is 32.6°C (90.7°F), and the average low-temperature is 24.8°C (76.6°F). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 42.6°C (108.7°F).

What is the least humid month in Anuradhapura?

July through September, with an average relative humidity of 71%, are the least humid months.

What is the average humidity in September in Anuradhapura?

The average relative humidity in September in Anuradhapura, Sri Lanka, is 71%.

How much does it rain in Anuradhapura in September?

In Anuradhapura, in September, during 14 rainfall days, 57mm (2.24") of precipitation is typically accumulated.

How many hours of daylight does Anuradhapura have in September?

The average length of the day in September is 12.2h.

How many hours of sunshine does Anuradhapura have in September?

In Anuradhapura, Sri Lanka, the average sunshine in September is 9.6h.

What are the months with the highest UV index in Anuradhapura?

February through September, with an average maximum UV index of 7, are months with the highest UV index in Anuradhapura.

What is the UV index reading in September in Anuradhapura?

In September, the average daily maximum UV index in Anuradhapura is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Anuradhapura, Sri Lanka

Average temperature in September - Anuradhapura, Sri Lanka
  • Average high temperature in September: 32.6°C

The warmest months (with the highest average high temperature) are March and April (34.3°C).
The month with the lowest average high temperature is December (29.5°C).

  • Average low temperature in September: 24.8°C

The month with the highest average low temperature is June (25.4°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).

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Average pressure in September
Anuradhapura, Sri Lanka

Average pressure in September - Anuradhapura, Sri Lanka
  • Average pressure in September: 1008.6mbar

The month with the highest atmospheric pressure is January (1012mbar).
The month with the lowest atmospheric pressure is June (1007.2mbar).

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Average wind speed in September
Anuradhapura, Sri Lanka

Average wind speed in September - Anuradhapura, Sri Lanka
  • Average wind speed in September: 23.1km/h

The windiest month (with the highest average wind speed) is June (27.4km/h).
The calmest month (with the lowest average wind speed) is April (9.9km/h).

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Average humidity in September
Anuradhapura, Sri Lanka

Average humidity in September - Anuradhapura, Sri Lanka
  • Average humidity in September: 71%

The month with the highest relative humidity is December (84%).
Months with the lowest relative humidity are July, August and September (71%).

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Average rainfall in September
Anuradhapura, Sri Lanka

Average rainfall in September - Anuradhapura, Sri Lanka
  • Average rainfall in September: 57mm

The wettest month (with the highest rainfall) is October (205mm).
The driest month (with the least rainfall) is June (20mm).

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Average rainfall days in September
Anuradhapura, Sri Lanka

Average rainfall days in September - Anuradhapura, Sri Lanka
  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is November (25.5 days).
The month with the least rainy days is July (10.4 days).

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Average daylight in September /
Average sunshine in September
Anuradhapura, Sri Lanka

Average daylight in September / Average sunshine in September - Anuradhapura, Sri Lanka
  • Average daylight in September: 12.2h

Months with the longest days are June and July (Average daylight: 12.6h).
The month with the shortest days is December (Average daylight: 11.6h).

  • Average sunshine in September: 9.6h

Months with the most sunshine are May and July (Average sunshine: 10.2h).
The month with the least sunshine is December (Average sunshine: 5.1h).

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Average sunshine days in September
Anuradhapura, Sri Lanka

Average sunshine days in September - Anuradhapura, Sri Lanka
  • Average sunshine days in September: 12.5 days

The month with the most sunshine days is July (18.3 days).
The month with the least sunshine days is November (3.2 days).

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Average UV index in September
Anuradhapura, Sri Lanka

Average UV index in September - Anuradhapura, Sri Lanka
  • Average UV index in September: 7

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 7).
Months with the lowest UV index are January, October, November and December (UV index 6).

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Average cloud cover in September
Anuradhapura, Sri Lanka

Average cloud cover in September - Anuradhapura, Sri Lanka
  • Average cloud cover in September: 44

The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is March (Cloud cover 26).

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Average visibility in September
Anuradhapura, Sri Lanka

Average visibility in September - Anuradhapura, Sri Lanka
  • Average visibility in September: 10km

Months with the highest visibility are May, June, July, August and September (10km).
Months with the lowest visibility are January, February, November and December (8km).

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