September weather forecastPothuhera, Sri Lanka
September
Weather in September
September, the first month of the autumn in Pothuhera, is still a hot month, with an average temperature fluctuating between 22.3°C (72.1°F) and 31.2°C (88.2°F).Temperature
September notes an average high-temperature of a still hot 31.2°C (88.2°F), subtly differing from August's 30.8°C (87.4°F). An average minimum temperature of 22.3°C (72.1°F) is recorded during the month of September.Heat index
Throughout September, the heat index is appraised at a fiery hot 39°C (102.2°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.One should consider that heat index numbers are for shaded settings and light wind. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
The months with the lowest humidity are March and September, with an average relative humidity of 72%.Rainfall
In September, the rain falls for 15.2 days. Throughout September, 72mm (2.83") of precipitation is accumulated. In Pothuhera, during the entire year, the rain falls for 217.7 days and collects up to 1165mm (45.87") of precipitation.Daylight
The average length of the day in September is 12h and 10min.On the first day of September, sunrise is at 06:00 and sunset at 18:16. On the last day of the month, sunrise is at 05:56 and sunset at 18:00 +0530.
Sunshine
In Pothuhera, the average sunshine in September is 10.5h.UV index
March through September, 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 hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 7 transforms into these recommendations:
Shun overexposure. Protection from sun ravages is indispensable. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Pothuhera, Sri Lanka
- Average high temperature in September: 31.2°C
The warmest month (with the highest average high temperature) is April (32.9°C).
The month with the lowest average high temperature is December (28.6°C).
- Average low temperature in September: 22.3°C
The month with the highest average low temperature is May (23°C).
The coldest month (with the lowest average low temperature) is February (18.9°C).
Average pressure in September
Pothuhera, Sri Lanka
- Average pressure in September: 1009.2mbar
The month with the highest atmospheric pressure is January (1011.9mbar).
The month with the lowest atmospheric pressure is June (1007.9mbar).
Average wind speed in September
Pothuhera, Sri Lanka
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is June (16.5km/h).
The calmest month (with the lowest average wind speed) is April (5.6km/h).
Average humidity in September
Pothuhera, Sri Lanka
- Average humidity in September: 72%
The month with the highest relative humidity is December (83%).
The months with the lowest relative humidity are March and September (72%).
Average rainfall in September
Pothuhera, Sri Lanka
- Average rainfall in September: 72mm
The wettest month (with the highest rainfall) is October (267mm).
The driest month (with the least rainfall) is June (29mm).
Average rainfall days in September
Pothuhera, Sri Lanka
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is April (24.7 days).
The month with the least rainy days is February (11.8 days).
Average daylight in September /
Average sunshine in September
Pothuhera, Sri Lanka
- Average daylight in September: 12h and 12min
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: 10h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Pothuhera, Sri Lanka
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is April (4 days).
Average UV index in September
Pothuhera, Sri Lanka
- Average UV index in September: 7
The months with the highest UV index are March, April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, October, November and December (UV index 6).
Average cloud cover in September
Pothuhera, Sri Lanka
- Average cloud cover in September: 31
The months with the most cloud cover are November and December (Cloud cover 46).
The month with the least cloud cover is March (Cloud cover 24).
Average visibility in September
Pothuhera, Sri Lanka
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, November and December (8km).
