September weather forecastAraly, Sri Lanka

September

Weather in September

The first month of the autumn, September, is also a moderately hot month in Araly, Sri Lanka, with an average temperature varying between 28.8°C (83.8°F) and 27.5°C (81.5°F).

Temperature

September's arrival yields an average high-temperature of a still moderately hot 28.8°C (83.8°F), mirroring that of August. Araly notes an average temperature descent to a still warm 27.5°C (81.5°F) in September, a small shift from its daytime peak.

Heat index

Throughout September, the heat index is appraised at a tropical 34°C (93.2°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Keep in mind the heat index values are meant for areas in shade and with light wind. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

The months with the highest humidity are May, August and September, with an average relative humidity of 79%.

Rainfall

In September, in Araly, the rain falls for 15.5 days. Throughout September, 58mm (2.28") of precipitation is accumulated. Throughout the year, there are 148.6 rainfall days, and 769mm (30.28") of precipitation is accumulated.

Daylight

In September, the average length of the day in Araly is 12h and 11min.
On the first day of the month, sunrise is at 06:01 and sunset at 18:19. On the last day of September, sunrise is at 05:58 and sunset at 18:01 +0530.

Sunshine

In September, the average sunshine in Araly is 10.2h.

UV index

January through October and December, with an average maximum UV index of 7, are months with the highest UV index in Araly. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Updated: Feb 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, the average high-temperature and low-temperature in Araly are 28.8°C (83.8°F) and 27.5°C (81.5°F) respectively. In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is appraised at 34°C (93.2°F).

The months with the highest humidity are May, August and September, with an average relative humidity of 79%.

In September, the average relative humidity in Araly is 79%.

In Araly, in September, during 15.5 rainfall days, 58mm (2.28") of precipitation is typically accumulated.

In September, the average day length is 12h and 11min.

In September, on the first day of the month, sunrise is at 06:01 and sunset at 18:19. On the last day of the month, in Araly, sunrise is at 05:58 and sunset at 18:01 +0530.

In Araly, the average sunshine duration in September is 10.2h.

January through October and December, with an average maximum UV index of 7, are months with the highest UV index.

In September, the average daily maximum UV index in Araly, Sri Lanka, is 7. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

28.8°C

29.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

29.7km/h

28.8km/h

20.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

17.7

13.8

7.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Araly, Sri Lanka

Average high temperature in September: 28.8°C

The warmest month (with the highest average high temperature) is April (30.4°C).
The month with the lowest average high temperature is January (26.8°C).

Average low temperature in September: 27.5°C

The month with the highest average low temperature is May (29°C).
The coldest month (with the lowest average low temperature) is January (25.5°C).

Average pressure in September
Araly, Sri Lanka

Average pressure in September: 1007.6mbar

The month with the highest atmospheric pressure is January (1012.5mbar).
The month with the lowest atmospheric pressure is June (1005.9mbar).

Average wind speed in September
Araly, Sri Lanka

Average wind speed in September: 28.3km/h

The windiest month (with the highest average wind speed) is June (33.8km/h).
The calmest months (with the lowest average wind speed) are March and April (16.7km/h).

Average humidity in September
Araly, Sri Lanka

Average humidity in September: 79%

The months with the highest relative humidity are May, August and September (79%).
The month with the lowest relative humidity is March (75%).

Average rainfall in September
Araly, Sri Lanka

Average rainfall in September: 58mm

The wettest month (with the highest rainfall) is October (191mm).
The driest month (with the least rainfall) is March (13mm).

Average rainfall days in September
Araly, Sri Lanka

Average rainfall days in September: 15.5 days

The month with the highest number of rainy days is October (22.6 days).
The month with the least rainy days is March (5.8 days).

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

Average daylight in September: 12h and 12min

The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).

Average sunshine in September: 10h and 12min

The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in September
Araly, Sri Lanka

Average sunshine days in September: 13.8 days

The month with the most sunshine days is March (23.9 days).
The month with the least sunshine days is November (6.3 days).

Average UV index in September
Araly, Sri Lanka

Average UV index in September: 7

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

Average cloud cover in September
Araly, Sri Lanka

Average cloud cover in September: 30

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 16).

Average visibility in September
Araly, Sri Lanka

Average visibility in September: 10km

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