September weather forecast
Arambepola, Sri Lanka

September

Weather in September

The first month of the autumn, September, is also a hot month in Arambepola, Sri Lanka, with an average temperature fluctuating between 22.3°C (72.1°F) and 31.2°C (88.2°F).

Temperature

September notes an average high-temperature of a still hot 31.2°C (88.2°F), subtly differing from August's 30.8°C (87.4°F). Arambepola's temperature tends to fall to an average low of 22.3°C (72.1°F) during the nights of September.

Heat index

The heat index value during September is computed to be a torrid 39°C (102.2°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

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

Rainfall

In Arambepola, in September, it is raining for 15.2 days, with typically 72mm (2.83") of accumulated precipitation. In Arambepola, during the entire year, the rain falls for 217.7 days and collects up to 1165mm (45.87") of precipitation.

Daylight

In Arambepola, the average length of the day in September is 12h and 10min.
On the first day of September in Arambepola, 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

In Arambepola, 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 in Arambepola. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: In September, the UV index of 7 transforms into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct 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 Arambepola?
In September, the average high-temperature and low-temperature in Arambepola, Sri Lanka, are 31.2°C (88.2°F) and 22.3°C (72.1°F) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in September is computed to be 39°C (102.2°F).
What are the least humid months in Arambepola?
The months with the lowest humidity in Arambepola, Sri Lanka, are March and September, with an average relative humidity of 72%.
What is the average humidity in September in Arambepola?
In September, the average relative humidity in Arambepola, Sri Lanka, is 72%.
How much does it rain in Arambepola in September?
In Arambepola, in September, during 15.2 rainfall days, 72mm (2.83") of precipitation is typically accumulated.
How many hours of daylight does Arambepola have in September?
In September, the average day length is 12h and 10min.
What time are sunrise and sunset in September in Arambepola?
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.
How many hours of sunshine does Arambepola have in September?
In Arambepola, Sri Lanka, the average sunshine duration in September is 10.5h.
What is the month with the highest UV index in Arambepola?
The months with the highest UV index in Arambepola, Sri Lanka, are March through September, with an average maximum UV index of 7.
How high is the UV index in September in Arambepola?
In Arambepola, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health threat 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 - Arambepola, Sri Lanka
Average temperature in September
Arambepola, 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 - Arambepola, Sri Lanka
Average pressure in September
Arambepola, 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 - Arambepola, Sri Lanka
Average wind speed in September
Arambepola, 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 - Arambepola, Sri Lanka
Average humidity in September
Arambepola, 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 - Arambepola, Sri Lanka
Average rainfall in September
Arambepola, 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 - Arambepola, Sri Lanka
Average rainfall days in September
Arambepola, 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 - Arambepola, Sri Lanka
Average daylight in September /
Average sunshine in September
Arambepola, 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 - Arambepola, Sri Lanka
Average sunshine days in September
Arambepola, 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 - Arambepola, Sri Lanka
Average UV index in September
Arambepola, 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 - Arambepola, Sri Lanka
Average cloud cover in September
Arambepola, 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 - Arambepola, Sri Lanka
Average visibility in September
Arambepola, 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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