September weather forecastMoolai, Sri Lanka

September

Weather in September

September, the first month of the autumn in Moolai, is still a warm month, with temperature in the range of an average low of 27.5°C (81.5°F) and an average high of 28.8°C (83.8°F).

Temperature

Moolai signifies an average high-temperature of a still moderately hot 28.8°C (83.8°F) in September, closely reflecting the conditions of August. Nighttime temperatures hover around an average low of 27.5°C (81.5°F) in September, a slight descent from daytime highs.

Heat index

In September, the heat index is calculated to be a hot 34°C (93.2°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.

Humidity

May, August and September, with an average relative humidity of 79%, are the most humid months in Moolai.

Rainfall

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

Sunshine

In September, the average sunshine is 10.2h.

UV index

The months with the highest UV index in Moolai are January through October and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

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

Frequently asked questions

In Moolai, 28.8°C (83.8°F) is the average high-temperature and 27.5°C (81.5°F) is the average low-temperature during September. In September, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 34°C (93.2°F).

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

In Moolai, Sri Lanka, the average relative humidity in September is 79%.

In Moolai, in September, it is raining for 15.5 days, with typically 58mm (2.28") of accumulated precipitation.

In September, the average day length in Moolai, Sri Lanka, 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 Moolai, sunrise is at 05:58 and sunset at 18:01 +0530.

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

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

The average daily maximum UV index in September in Moolai, Sri Lanka, is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.

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
Moolai, 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
Moolai, 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
Moolai, 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
Moolai, 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
Moolai, 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
Moolai, 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
Moolai, 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
Moolai, 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
Moolai, 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
Moolai, 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
Moolai, 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).