September weather forecastAlas, East Timor
September
Weather in September
September signals a departure from the feather-light rainfall of August with a modest increase to 9mm (0.35"). The cloud cover also begins its ascend, moving from an almost clear sky to a lightly clouded one. This period observes slightly warmer temperatures, with the low average resorting back to mid-20s from the 22.3°C (72.1°F) in August. However, in spite of minor alterations, the month remains predominantly dry, asserting Alas's tropical metropolis.Temperature
The advent of September presents an average high-temperature of a still warm 27.7°C (81.9°F), maintaining a close correlation with the preceding month. Nighttime temperatures record an average of 23.2°C (73.8°F) throughout September.Heat index
The heat index for September is appraised at a tropical 30°C (86°F). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.Understand that the heat index values take into account shaded locations and mild winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', determines the feeling of heat when you account for the relative humidity. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 69%.Rainfall
In Alas, in September, it is raining for 5.9 days, with typically 9mm (0.35") of accumulated precipitation. In Alas, during the entire year, the rain falls for 201.9 days and collects up to 906mm (35.67") of precipitation.Daylight
In September, the average length of the day is 12h and 3min.On the first day of the month, sunrise is at 06:38 and sunset at 18:35. On the last day of September, sunrise is at 06:21 and sunset at 18:32 +09.
Sunshine
The months with the most sunshine in Alas are August and September, with an average of 9.9h of sunshine.UV index
The months with the highest UV index are March through May, September through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: During September, 7 as the daily maximum UV index converts into the following advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Alas, East Timor
- Average high temperature in September: 27.7°C
The warmest month (with the highest average high temperature) is October (28.5°C).
The month with the lowest average high temperature is July (26.6°C).
- Average low temperature in September: 23.2°C
The month with the highest average low temperature is December (24.7°C).
The coldest month (with the lowest average low temperature) is August (22.3°C).
Average pressure in September
Alas, East Timor
- Average pressure in September: 1011.9mbar
The month with the highest atmospheric pressure is August (1012.5mbar).
The month with the lowest atmospheric pressure is December (1007.7mbar).
Average wind speed in September
Alas, East Timor
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is July (12.1km/h).
The calmest month (with the lowest average wind speed) is November (7.1km/h).
Average humidity in September
Alas, East Timor
- Average humidity in September: 69%
The months with the highest relative humidity are January, February and March (79%).
The months with the lowest relative humidity are August and September (69%).
Average rainfall in September
Alas, East Timor
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is December (172mm).
The driest month (with the least rainfall) is August (2mm).
Average rainfall days in September
Alas, East Timor
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is December (28.4 days).
The month with the least rainy days is August (2.8 days).
Average daylight in September /
Average sunshine in September
Alas, East Timor
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 36min).
- Average sunshine in September: 9h and 54min
The months with the most sunshine are August and September (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 8h and 6min).
Average sunshine days in September
Alas, East Timor
- Average sunshine days in September: 22.6 days
The month with the most sunshine days is August (26.4 days).
The month with the least sunshine days is January (0.6 days).
Average UV index in September
Alas, East Timor
- Average UV index in September: 7
The months with the highest UV index are March, April, May, September, October and November (UV index 7).
The months with the lowest UV index are January, February, June, July, August and December (UV index 6).
Average cloud cover in September
Alas, East Timor
- Average cloud cover in September: 11
The months with the most cloud cover are January and February (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Alas, East Timor
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February, March and December (9km).
