September weather forecast
Kudapaduwa, Sri Lanka

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Kudapaduwa, Sri Lanka, with temperature in the range of an average high of 29.5°C (85.1°F) and an average low of 25.2°C (77.4°F).

Temperature

Kudapaduwa commences September with an average high-temperature of a still warm 29.5°C (85.1°F), maintaining a close resemblance to the previous month. An average temperature of 25.2°C (77.4°F) is logged during the nights of September in Kudapaduwa, a small step down from daytime highs.

Heat index

The heat index for September is estimated at a very hot 36°C (96.8°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
For clarity, heat index numbers account for light winds and areas under shade. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In September, the average relative humidity in Kudapaduwa is 81%.

Rainfall

In Kudapaduwa, during September, the rain falls for 24.4 days and regularly aggregates up to 153mm (6.02") of precipitation. In Kudapaduwa, during the entire year, the rain falls for 265.4 days and collects up to 1744mm (68.66") of precipitation.

Daylight

In Kudapaduwa, 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 18:18. On the last day of the month, sunrise is at 05:58 and sunset at 18:02 +0530.

Sunshine

In September, the average sunshine in Kudapaduwa is 7.7h.

UV index

The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Frequently asked questions

How hot is it in Kudapaduwa in September?
In September, in Kudapaduwa, the average high-temperature is 29.5°C (85.1°F), and the average low-temperature is 25.2°C (77.4°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is estimated at 36°C (96.8°F).
What is the average humidity in September in Kudapaduwa?
The average relative humidity in September in Kudapaduwa is 81%.
How many days does it rain in September in Kudapaduwa?
In September, in Kudapaduwa, Sri Lanka, the rain falls for 24.4 days. Throughout September, 153mm (6.02") of precipitation is accumulated.
What is the average length of the day in September in Kudapaduwa?
In September, the average day length in Kudapaduwa is 12h and 10min.
When are sunrise and sunset in September in Kudapaduwa?
On the first day of September in Kudapaduwa, sunrise is at 06:02 and sunset at 18:18. On the last day of the month, sunrise is at 05:58 and sunset at 18:02 +0530.
How long on average sun shines in September in Kudapaduwa?
The average sunshine duration in September in Kudapaduwa is 7.7h.
What are the months with the highest UV index in Kudapaduwa?
The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7.
What is the UV index reading in September in Kudapaduwa?
In Kudapaduwa, Sri Lanka, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Kudapaduwa, Sri Lanka
  • Average high temperature in September: 29.5°C

The warmest month (with the highest average high temperature) is March (32.1°C).
The month with the lowest average high temperature is July (29.2°C).

  • Average low temperature in September: 25.2°C

The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.8°C).

Average pressure in September
Kudapaduwa, Sri Lanka
  • Average pressure in September: 1009.6mbar

The month with the highest atmospheric pressure is January (1011.7mbar).
The months with the lowest atmospheric pressure are May and June (1008.4mbar).

Average wind speed in September
Kudapaduwa, Sri Lanka
  • Average wind speed in September: 16km/h

The windiest month (with the highest average wind speed) is June (18.3km/h).
The calmest month (with the lowest average wind speed) is March (9.1km/h).

Average humidity in September
Kudapaduwa, Sri Lanka
  • Average humidity in September: 81%

The months with the highest relative humidity are June, July and August (82%).
The months with the lowest relative humidity are January and February (73%).

Average rainfall in September
Kudapaduwa, Sri Lanka
  • Average rainfall in September: 153mm

The wettest month (with the highest rainfall) is June (231mm).
The driest month (with the least rainfall) is January (29mm).

Average rainfall days in September
Kudapaduwa, Sri Lanka
  • Average rainfall days in September: 24.4 days

The month with the highest number of rainy days is August (28.4 days).
The month with the least rainy days is January (9.7 days).

Average daylight in September /
Average sunshine in September
Kudapaduwa, 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 4min

The months with the most sunshine are January, February, March and April (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).

Average sunshine days in September
Kudapaduwa, Sri Lanka
  • Average sunshine days in September: 3 days

The month with the most sunshine days is January (20 days).
The month with the least sunshine days is August (1.2 days).

Average UV index in September
Kudapaduwa, Sri Lanka
  • Average UV index in September: 7

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

Average cloud cover in September
Kudapaduwa, Sri Lanka
  • Average cloud cover in September: 55

The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 21).

Average visibility in September
Kudapaduwa, Sri Lanka
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, June, July, September and December (10km).
The months with the lowest visibility are May, August, October and November (9km).

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