September weather forecast
Kegalle, Sri Lanka

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Weather in September

The beckoning of September carves a subtle difference in Kegalle's weather with a slight increase in rainfall, registering at 118mm (4.65"). Despite increased rainfall, extended sunshine hours of up to 10.3 add a brighter note to the climate. The temperatures do not fluctuate significantly From August to September, ensuring weather continuity. With slightly reduced wind speeds, September offers an optimal balance between precipitation and sunny days.

Temperature

Kegalle, Sri Lanka, experiences an average high-temperature of a still warm 29.5°C (85.1°F) with the onset of September, subtly varied from August's 29.2°C (84.6°F). Kegalle experiences a steady low-temperature of 21.1°C (70°F) throughout September.

Heat index

September's heat index is estimated at a fiery hot 35°C (95°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Kegalle, the average relative humidity in September is 77%.

Rainfall

In Kegalle, in September, it is raining for 23.4 days, with typically 118mm (4.65") of accumulated precipitation. Throughout the year, in Kegalle, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

In September, the average length of the day in Kegalle is 12h and 10min.
On the first day of September in Kegalle, sunrise is at 06:00 and sunset at 18:16. On the last day of the month, sunrise is at 05:56 and sunset at 18:00 +0530.

Sunshine

In Kegalle, the average sunshine in September is 10.3h.

UV index

The months with the highest UV index in Kegalle are January through September, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In September, a regular UV index of 6 translates into these guidelines:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Feb 6, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot is September in Kegalle?

Kegalle in September has an average high-temperature of 29.5°C (85.1°F) and an average low-temperature of 21.1°C (70°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is estimated at 35°C (95°F).

What is the average humidity in September in Kegalle?

In Kegalle, the average relative humidity in September is 77%.

How many days does it rain in September in Kegalle?

In Kegalle, Sri Lanka, in September, it is raining for 23.4 days, with typically 118mm (4.65") of accumulated precipitation.

What is the average length of the day in September in Kegalle?

The average day length in September in Kegalle is 12h and 10min.

When are sunrise and sunset in September in Kegalle?

On the first day of September in Kegalle, sunrise is at 06:00 and sunset at 18:16. On the last day of the month, sunrise is at 05:56 and sunset at 18:00 +0530.

How many hours of sunshine does Kegalle have in September?

In Kegalle, the average sunshine duration in September is 10.3h.

What is the month with the highest UV index in Kegalle?

The months with the highest UV index in Kegalle, Sri Lanka, are January through September, November and December, with an average maximum UV index of 6.

How high is the UV index in September in Kegalle?

In Kegalle, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in September
Kegalle, Sri Lanka

Average temperature in September - Kegalle, Sri Lanka
  • Average high temperature in September: 29.5°C

The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).

  • Average low temperature in September: 21.1°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 (18.1°C).

Average pressure in September
Kegalle, Sri Lanka

Average pressure in September - Kegalle, Sri Lanka
  • Average pressure in September: 1009.3mbar

The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).

Average wind speed in September
Kegalle, Sri Lanka

Average wind speed in September - Kegalle, Sri Lanka
  • Average wind speed in September: 10.8km/h

The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).

Average humidity in September
Kegalle, Sri Lanka

Average humidity in September - Kegalle, Sri Lanka
  • Average humidity in September: 77%

The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).

Average rainfall in September
Kegalle, Sri Lanka

Average rainfall in September - Kegalle, Sri Lanka
  • Average rainfall in September: 118mm

The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).

Average rainfall days in September
Kegalle, Sri Lanka

Average rainfall days in September - Kegalle, Sri Lanka
  • Average rainfall days in September: 23.4 days

The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).

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

Average daylight in September / Average sunshine in September - Kegalle, 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: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in September
Kegalle, Sri Lanka

Average sunshine days in September - Kegalle, Sri Lanka
  • Average sunshine days in September: 3.9 days

The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).

Average UV index in September
Kegalle, Sri Lanka

Average UV index in September - Kegalle, Sri Lanka
  • Average UV index in September: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).

Average cloud cover in September
Kegalle, Sri Lanka

Average cloud cover in September - Kegalle, Sri Lanka
  • Average cloud cover in September: 34

The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).

Average visibility in September
Kegalle, Sri Lanka

Average visibility in September - Kegalle, Sri Lanka
  • Average visibility in September: 9km

The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).

Kegalle, Sri Lanka

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