September weather forecast
Kahatagastenna, Sri Lanka

September

Weather in September

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

Temperature

Kahatagastenna's average high-temperature in September is a still tropical 31.2°C (88.2°F), indicating a subtle variation from August. Kahatagastenna's nights in September experience an average temperature drop to an agreeable 22.3°C (72.1°F).

Heat index

In September, the heat index is computed to be a very hot 39°C (102.2°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception 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 critical to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

March and September, with an average relative humidity of 72%, are the least humid months in Kahatagastenna.

Rainfall

In Kahatagastenna, during September, the rain falls for 15.2 days and regularly aggregates up to 72mm (2.83") of precipitation. Throughout the year, there are 217.7 rainfall days, and 1165mm (45.87") of precipitation is accumulated.

Daylight

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

March through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the average person.
Note: In September, a regular UV index of 7 translates into these guidelines:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Frequently asked questions

How hot is September in Kahatagastenna?
An average high-temperature, in September, in Kahatagastenna, is 31.2°C (88.2°F) and the average low-temperature is 22.3°C (72.1°F). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 39°C (102.2°F).
What are the least humid months in Kahatagastenna?
The months with the lowest humidity in Kahatagastenna, Sri Lanka, are March and September, with an average relative humidity of 72%.
What is the average humidity in September in Kahatagastenna?
The average relative humidity in September in Kahatagastenna, Sri Lanka, is 72%.
How many days does it rain in September in Kahatagastenna?
In September, the rain falls for 15.2 days. Throughout September, 72mm (2.83") of precipitation is accumulated.
What is the average length of the day in September in Kahatagastenna?
In September, the average day length in Kahatagastenna is 12h and 10min.
What time are sunrise and sunset in September in Kahatagastenna?
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 many hours of sunshine does Kahatagastenna have in September?
In September, the average sunshine duration in Kahatagastenna is 10.5h.
What is the month with the highest UV index in Kahatagastenna?
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 in Kahatagastenna?
The average daily maximum UV index in September in Kahatagastenna is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to 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 - Kahatagastenna, Sri Lanka
Average temperature in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average pressure in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average wind speed in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average humidity in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average rainfall in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average rainfall days in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average daylight in September /
Average sunshine in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average sunshine days in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average UV index in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average cloud cover in September
Kahatagastenna, 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 - Kahatagastenna, Sri Lanka
Average visibility in September
Kahatagastenna, 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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