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
August and September mark Naiduwa's lowest temperatures, averaging a high-temperature of 28.3°C (82.9°F).Heat index
In September, the average heat index is evaluated at a hot 33°C (91.4°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
June and September, with an average relative humidity of 82%, are the most humid months.Rainfall
In Naiduwa, in September, it is raining for 24.9 days, with typically 274mm (10.79") of accumulated precipitation. Throughout the year, in Naiduwa, Sri Lanka, there are 287.3 rainfall days, and 2026mm (79.76") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 10min.On the first day of September, sunrise is at 06:02 and sunset at 18:16. On the last day of the month, sunrise is at 05:57 and sunset at 18:01 +0530.
Sunshine
The average sunshine in September in Naiduwa is 8.2h.UV index
The months with the lowest UV index are May and September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Naiduwa?
How hot does it get in Naiduwa in September?
What are the most humid months in Naiduwa?
What is the average humidity in September in Naiduwa?
How much does it rain in Naiduwa in September?
How many hours of daylight does Naiduwa have in September?
When is the sunrise / sunset in September in Naiduwa?
How many hours of sunshine does Naiduwa have in September?
What is the month with the lowest UV index in Naiduwa?
What is the UV index intensity in September in Naiduwa?
Average temperature in September
Naiduwa, Sri Lanka
- Average high temperature in September: 28.3°C
The warmest months (with the highest average high temperature) are March and April (30.3°C).
The months with the lowest average high temperature are August and September (28.3°C).
- Average low temperature in September: 25.8°C
The month with the highest average low temperature is May (26.7°C).
The coldest month (with the lowest average low temperature) is January (24°C).
Average pressure in September
Naiduwa, Sri Lanka
- Average pressure in September: 1010.1mbar
The month with the highest atmospheric pressure is January (1011.4mbar).
The month with the lowest atmospheric pressure is May (1008.9mbar).
Average wind speed in September
Naiduwa, Sri Lanka
- Average wind speed in September: 17.4km/h
The windiest month (with the highest average wind speed) is June (20.2km/h).
The calmest month (with the lowest average wind speed) is January (7.8km/h).
Average humidity in September
Naiduwa, Sri Lanka
- Average humidity in September: 82%
The months with the highest relative humidity are June and September (82%).
The months with the lowest relative humidity are February and March (77%).
Average rainfall in September
Naiduwa, Sri Lanka
- Average rainfall in September: 274mm
The wettest month (with the highest rainfall) is May (302mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in September
Naiduwa, Sri Lanka
- Average rainfall days in September: 24.9 days
The month with the highest number of rainy days is June (28 days).
The month with the least rainy days is January (14.8 days).
Average daylight in September /
Average sunshine in September
Naiduwa, 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 48min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is April (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Naiduwa, Sri Lanka
- Average sunshine days in September: 2.2 days
The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is June (1 days).
Average UV index in September
Naiduwa, Sri Lanka
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, June, July, August, October, November and December (UV index 7).
The months with the lowest UV index are May and September (UV index 6).
Average cloud cover in September
Naiduwa, Sri Lanka
- Average cloud cover in September: 52
The month with the most cloud cover is September (Cloud cover 52).
The month with the least cloud cover is February (Cloud cover 26).
Average visibility in September
Naiduwa, Sri Lanka
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, June and December (10km).
The months with the lowest visibility are May, July, August, September, October and November (9km).
