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
Weather in September
Temperature
Hirimbura's coldest months, August and September, record an average high-temperature of 28.3°C (82.9°F).Heat index
September's mean heat index is estimated at a tropical 33°C (91.4°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.In reference to the heat index, it's for places in shade and with a slight wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. 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 highly critical for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
The months with the highest humidity in Hirimbura are June and September, with an average relative humidity of 82%.Rainfall
In September, the rain falls for 24.9 days. Throughout September, 274mm (10.79") of precipitation is accumulated. Throughout the year, there are 287.3 rainfall days, and 2026mm (79.76") of precipitation is accumulated.Daylight
In September, the average length of the day in Hirimbura is 12h and 9min.On the first day of September in Hirimbura, Sri Lanka, sunrise is at 06:02 and sunset at 18:15. On the last day of the month, sunrise is at 05:56 and sunset at 18:01 +0530.
Sunshine
The average sunshine in September is 8.2h.UV index
May and September, with an average maximum UV index of 6, are months with the lowest UV index in Hirimbura. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, the UV index of 6 transforms into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Frequently asked questions
What part of the year is the coldest in Hirimbura?
Is it hot in Hirimbura during September?
What is the most humid month in Hirimbura?
What is the average humidity in September in Hirimbura?
How much does it rain in Hirimbura in September?
How many hours of daylight does Hirimbura have in September?
What time are sunrise and sunset in September in Hirimbura?
How many hours of sunshine does Hirimbura have in September?
What are the months with the lowest UV index in Hirimbura?
What is the UV index reading in September in Hirimbura?
Average temperature in September
Hirimbura, 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
Hirimbura, 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
Hirimbura, 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
Hirimbura, 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
Hirimbura, 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
Hirimbura, 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
Hirimbura, 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
Hirimbura, 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
Hirimbura, 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
Hirimbura, 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
Hirimbura, 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).
Hirimbura, Sri Lanka
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