September weather forecastMutur, Sri Lanka
September
Weather in September
The first month of the autumn, September, is also a hot month in Mutur, Sri Lanka, with an average temperature ranging between max 33.9°C (93°F) and min 24.1°C (75.4°F).Temperature
The average high-temperature during September is a still tropical 33.9°C (93°F), almost matching the conditions of the preceding month. In September, the average low-temperature is a moderately hot 24.1°C (75.4°F).Heat index
September's mean heat index is evaluated at a blazing hot 45°C (113°F). Be careful: Heat exhaustion and heat cramps are probable. Heatstroke may result from extended activity.It is important to note that the heat index values are for shaded areas and light wind scenarios. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.
Humidity
June through September, with an average relative humidity of 67%, are the least humid months.Rainfall
In Mutur, in September, during 13.5 rainfall days, 53mm (2.09") of precipitation is typically accumulated. In Mutur, during the entire year, the rain falls for 196.8 days and collects up to 943mm (37.13") of precipitation.Daylight
In September, the average length of the day in Mutur, Sri Lanka, is 12h and 10min.On the first day of September, sunrise is at 05:56 and sunset at 18:13. On the last day of the month, sunrise is at 05:53 and sunset at 17:56 +0530.
Sunshine
In September, the average sunshine in Mutur is 10.9h.UV index
February through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mutur, Sri Lanka
- Average high temperature in September: 33.9°C
The warmest month (with the highest average high temperature) is April (34.9°C).
The months with the lowest average high temperature are January and December (29.3°C).
- Average low temperature in September: 24.1°C
The month with the highest average low temperature is June (24.8°C).
The coldest months (with the lowest average low temperature) are January and February (20°C).
Average pressure in September
Mutur, Sri Lanka
- Average pressure in September: 1008.8mbar
The month with the highest atmospheric pressure is January (1012mbar).
The month with the lowest atmospheric pressure is June (1007.5mbar).
Average wind speed in September
Mutur, Sri Lanka
- Average wind speed in September: 18.7km/h
The windiest month (with the highest average wind speed) is June (23.8km/h).
The calmest month (with the lowest average wind speed) is April (7.1km/h).
Average humidity in September
Mutur, Sri Lanka
- Average humidity in September: 67%
The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are June, July, August and September (67%).
Average rainfall in September
Mutur, Sri Lanka
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is October (214mm).
The driest month (with the least rainfall) is June (15mm).
Average rainfall days in September
Mutur, Sri Lanka
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is November (24.1 days).
The month with the least rainy days is June (7.8 days).
Average daylight in September /
Average sunshine in September
Mutur, Sri Lanka
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 10h and 54min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Mutur, Sri Lanka
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is July (16 days).
The month with the least sunshine days is November (4.2 days).
Average UV index in September
Mutur, Sri Lanka
- Average UV index in September: 7
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, November and December (UV index 6).
Average cloud cover in September
Mutur, Sri Lanka
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is May (Cloud cover 26).
Average visibility in September
Mutur, Sri Lanka
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January and December (7km).





