Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
Nugegoda marks the start of September with an average high-temperature of a still moderately hot 84.4°F, hinting at a slight fluctuation from August's 84°F. A slight dip in temperature to a still moderately hot 76.8°F marks the average nights during September.Heat index
The heat index value for September is calculated to be a fiery hot 95°F. Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. 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 for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
In Nugegoda, the average relative humidity in September is 81%.Rainfall
In Nugegoda, Sri Lanka, in September, during 26.9 rainfall days, 8.11" of precipitation is typically accumulated. In Nugegoda, during the entire year, the rain falls for 289.4 days and collects up to 89.06" of precipitation.Daylight
In Nugegoda, the average length of the day in September is 12h and 10min.On the first day of the month, sunrise is at 06:02 and sunset at 18:17. On the last day of September, sunrise is at 05:58 and sunset at 18:02 +0530.
Sunshine
In Nugegoda, the average sunshine in September is 7.4h.UV index
January through April, July, September, November and December, 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 vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, a daily UV index of 7 turns into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Nugegoda have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index in Nugegoda?
What is the UV index reading in September in Nugegoda?
Average temperature in September
Nugegoda, Sri Lanka
- Average high temperature in September: 84.4°F
The warmest months (with the highest average high temperature) are March and April (89.2°F).
The months with the lowest average high temperature are July and August (84°F).
- Average low temperature in September: 76.8°F
The month with the highest average low temperature is May (79.3°F).
The coldest month (with the lowest average low temperature) is January (73.6°F).
Average pressure in September
Nugegoda, Sri Lanka
- Average pressure in September: 29.82"Hg
The month with the highest atmospheric pressure is January (29.87"Hg).
The month with the lowest atmospheric pressure is May (29.78"Hg).
Average wind speed in September
Nugegoda, Sri Lanka
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is June (9.4mph).
The calmest month (with the lowest average wind speed) is March (5mph).
Average humidity in September
Nugegoda, Sri Lanka
- Average humidity in September: 81%
The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall in September
Nugegoda, Sri Lanka
- Average rainfall in September: 8.11"
The wettest month (with the highest rainfall) is June (13.43").
The driest month (with the least rainfall) is January (1.57").
Average rainfall days in September
Nugegoda, Sri Lanka
- Average rainfall days in September: 26.9 days
The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).
Average daylight in September /
Average sunshine in September
Nugegoda, 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: 7h and 2min
The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days in September
Nugegoda, Sri Lanka
- Average sunshine days in September: 1.5 days
The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).
Average UV index in September
Nugegoda, Sri Lanka
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
The months with the lowest UV index are May, June, August and October (UV index 6).
Average cloud cover in September
Nugegoda, Sri Lanka
- Average cloud cover in September: 55
The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility in September
Nugegoda, Sri Lanka
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
