September weather forecastHambantota, Sri Lanka
September weather for Hambantota, Sri Lanka: The months with the highest UV index in Hambantota, Sri Lanka, are January through September, November and December, with an average maximum UV index of 7. As August turns into September in Hambantota, Sri Lanka, the average high-temperatures rest at a still hot 30.1°C (86.2°F), showing a minor variation from the prior month.
September
Weather in September
September signals a shift from the droughty weather pattern with a noticeable rise in rainfall from 30mm (1.18") to 48mm (1.89"). Significantly, the average temperatures do not undergo major changes. However, the increases in rainfall days and humidity percentage signal the arrival of the transitional monsoon season. The number of sunshine hours remains consistent, reflecting an optimistic weather outcome. The blend of sunshine and rains forms a unique weather pattern for the city.Temperature
As August turns into September in Hambantota, Sri Lanka, the average high-temperatures rest at a still hot 30.1°C (86.2°F), showing a minor variation from the prior month. Hambantota experiences a minimal drop from daytime high temperatures, recording an average low-temperature of 26°C (78.8°F) throughout September.Heat index
September's heat index is calculated to be a sweltering 37°C (98.6°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.The standards for the heat index are set for locations in shade and under light breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.
Humidity
In September, the average relative humidity is 75%.Rainfall
In Hambantota, in September, it is raining for 14.4 days, with typically 48mm (1.89") of accumulated precipitation. Throughout the year, in Hambantota, there are 192.9 rainfall days, and 942mm (37.09") of precipitation is accumulated.Daylight
In September, the average length of the day in Hambantota is 12h and 9min.On the first day of the month, sunrise is at 05:58 and sunset at 18:12. On the last day of September, in Hambantota, sunrise is at 05:53 and sunset at 17:57 +0530.
Sunshine
The average sunshine in September in Hambantota is 10.7h.UV index
The months with the highest UV index in Hambantota, Sri Lanka, are January through September, November and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hambantota, Sri Lanka
- Average high temperature in September: 30.1°C
The warmest month (with the highest average high temperature) is April (31.1°C).
The month with the lowest average high temperature is December (29°C).
- Average low temperature in September: 26°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 (23.9°C).
Average pressure in September
Hambantota, Sri Lanka
- Average pressure in September: 1009.8mbar
The month with the highest atmospheric pressure is January (1011.5mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed in September
Hambantota, Sri Lanka
- Average wind speed in September: 23.5km/h
The windiest month (with the highest average wind speed) is June (26.4km/h).
The calmest month (with the lowest average wind speed) is November (11.7km/h).
Average humidity in September
Hambantota, Sri Lanka
- Average humidity in September: 75%
The months with the highest relative humidity are November and December (79%).
The month with the lowest relative humidity is July (74%).
Average rainfall in September
Hambantota, Sri Lanka
- Average rainfall in September: 48mm
The wettest month (with the highest rainfall) is November (182mm).
The driest month (with the least rainfall) is July (16mm).
Average rainfall days in September
Hambantota, Sri Lanka
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is November (25.3 days).
The month with the least rainy days is July (10.6 days).
Average daylight in September /
Average sunshine in September
Hambantota, 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 48min).
- Average sunshine in September: 10h and 42min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in September
Hambantota, Sri Lanka
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is November (3.6 days).
Average UV index in September
Hambantota, 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, November and December (UV index 7).
The month with the lowest UV index is October (UV index 6).
Average cloud cover in September
Hambantota, Sri Lanka
- Average cloud cover in September: 33
The month with the most cloud cover is November (Cloud cover 40).
The month with the least cloud cover is March (Cloud cover 21).
Average visibility in September
Hambantota, Sri Lanka
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).





