September weather forecast
Alawatugoda, Sri Lanka

September

Weather in September

September, the first month of the autumn in Alawatugoda, is still a tropical month, with an average temperature varying between 22.3°C (72.1°F) and 31.2°C (88.2°F).

Temperature

Alawatugoda greets September with an average high-temperature of a still hot 31.2°C (88.2°F), marking a slight deviation from the preceding month. During the nights in September, Alawatugoda observes an average low-temperature of 22.3°C (72.1°F).

Heat index

Throughout September, the heat index is evaluated at a torrid 39°C (102.2°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

The months with the lowest humidity are March and September, with an average relative humidity of 72%.

Rainfall

In Alawatugoda, in September, during 15.2 rainfall days, 72mm (2.83") of precipitation is typically accumulated. Throughout the year, in Alawatugoda, there are 217.7 rainfall days, and 1165mm (45.87") of precipitation is accumulated.

Daylight

In Alawatugoda, the average length of the day in September is 12h and 10min.
On the first day of September, sunrise is at 05:59 and sunset at 18:15. On the last day of the month, sunrise is at 05:55 and sunset at 17:59 +0530.

Sunshine

The average sunshine in September is 10.5h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the UV index of 7 transforms into the following advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Boost your sun resistance with garments that are densely woven yet spacious.

Frequently asked questions

How hot is September?
The average high-temperature, in September, in Alawatugoda, is 31.2°C (88.2°F), while the average low-temperature is 22.3°C (72.1°F). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is evaluated at 39°C (102.2°F).
What are the least humid months?
The months with the lowest humidity are March and September, with an average relative humidity of 72%.
What is the average humidity in September?
In Alawatugoda, the average relative humidity in September is 72%.
How many days does it rain in September?
In Alawatugoda, Sri Lanka, during September, the rain falls for 15.2 days and regularly aggregates up to 72mm (2.83") of precipitation.
How many hours of daylight does Alawatugoda have in September?
In Alawatugoda, the average day length in September is 12h and 10min.
When are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 05:59 and sunset at 18:15. On the last day of the month, sunrise is at 05:55 and sunset at 17:59 +0530.
How long on average sun shines in September in Alawatugoda?
The average sunshine duration in September is 10.5h.
What are the months with the highest UV index?
March through September, with an average maximum UV index of 7, are months with the highest UV index.
What is the UV index reading in September?
The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
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 - Alawatugoda, Sri Lanka
Average temperature in September
Alawatugoda, Sri Lanka
  • Average high temperature in September: 31.2°C

The warmest month (with the highest average high temperature) is April (32.9°C).
The month with the lowest average high temperature is December (28.6°C).

  • Average low temperature in September: 22.3°C

The month with the highest average low temperature is May (23°C).
The coldest month (with the lowest average low temperature) is February (18.9°C).

Average pressure in September - Alawatugoda, Sri Lanka
Average pressure in September
Alawatugoda, Sri Lanka
  • Average pressure in September: 1009.2mbar

The month with the highest atmospheric pressure is January (1011.9mbar).
The month with the lowest atmospheric pressure is June (1007.9mbar).

Average wind speed in September - Alawatugoda, Sri Lanka
Average wind speed in September
Alawatugoda, Sri Lanka
  • Average wind speed in September: 13.2km/h

The windiest month (with the highest average wind speed) is June (16.5km/h).
The calmest month (with the lowest average wind speed) is April (5.6km/h).

Average humidity in September - Alawatugoda, Sri Lanka
Average humidity in September
Alawatugoda, Sri Lanka
  • Average humidity in September: 72%

The month with the highest relative humidity is December (83%).
The months with the lowest relative humidity are March and September (72%).

Average rainfall in September - Alawatugoda, Sri Lanka
Average rainfall in September
Alawatugoda, Sri Lanka
  • Average rainfall in September: 72mm

The wettest month (with the highest rainfall) is October (267mm).
The driest month (with the least rainfall) is June (29mm).

Average rainfall days in September - Alawatugoda, Sri Lanka
Average rainfall days in September
Alawatugoda, Sri Lanka
  • Average rainfall days in September: 15.2 days

The month with the highest number of rainy days is April (24.7 days).
The month with the least rainy days is February (11.8 days).

Average daylight in September / Average sunshine in September - Alawatugoda, Sri Lanka
Average daylight in September /
Average sunshine in September
Alawatugoda, 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 3min

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in September - Alawatugoda, Sri Lanka
Average sunshine days in September
Alawatugoda, Sri Lanka
  • Average sunshine days in September: 10.5 days

The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is April (4 days).

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

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

Average cloud cover in September - Alawatugoda, Sri Lanka
Average cloud cover in September
Alawatugoda, Sri Lanka
  • Average cloud cover in September: 31

The months with the most cloud cover are November and December (Cloud cover 46).
The month with the least cloud cover is March (Cloud cover 24).

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

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

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