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 sea temperature 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
The ideal sea water temperature of 27°C (80.6°F) and only 4.4 rainfall days, with 6mm (0.24") of accumulated rainfall, makes September the best time for swimming and other water activities.
Temperature
The shift from August to September is characterized by an average high-temperature of a still warm 29.1°C (84.4°F), not significantly different from the 27.9°C (82.2°F) of August. The average low-temperature during September nights is a still moderately hot 23.2°C (73.8°F).Heat index
The heat index value for September is calculated to be a tropical 34°C (93.2°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Humidity
In September, the average relative humidity is 73%.Rainfall
In September, the rain falls for 4.4 days. Throughout September, 6mm (0.24") of precipitation is accumulated. Throughout the year, there are 191.2 rainfall days, and 892mm (35.12") of precipitation is accumulated.Sea temperature
In Lailunggi, the average seawater temperature in September is 27°C (80.6°F).Note: For swimming, diving, and enjoying other water activities, the range of 25°C (77°F) to 29°C (84.2°F) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.
Daylight
In September, the average length of the day is 12h and 3min.On the first day of the month, sunrise is at 06:01 and sunset at 17:57. On the last day of September, sunrise is at 05:43 and sunset at 17:55 WITA.
Sunshine
In Lailunggi, the average sunshine in September is 9.6h.UV index
January through June, August through December, with an average maximum UV index of 7, are months with the highest UV index in Lailunggi, Indonesia. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 7 during September translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Experience reduced UV exposure by about half when donning a wide-brim hat. Alert! UV radiation becomes sharper due to reflections from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
What is the water temperature in September?
How many hours of daylight does Lailunggi have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Lailunggi have in September?
What are the months with the highest UV index in Lailunggi?
What is the UV index reading in September?
Average temperature in September
Lailunggi, Indonesia
- Average high temperature in September: 29.1°C
The warmest months (with the highest average high temperature) are October and November (30.5°C).
The month with the lowest average high temperature is July (27.3°C).
- Average low temperature in September: 23.2°C
The month with the highest average low temperature is December (25.6°C).
The coldest month (with the lowest average low temperature) is August (22.8°C).
Average pressure in September
Lailunggi, Indonesia
- Average pressure in September: 1012mbar
The month with the highest atmospheric pressure is August (1012.5mbar).
The months with the lowest atmospheric pressure are January and December (1007.9mbar).
Average wind speed in September
Lailunggi, Indonesia
- Average wind speed in September: 12.9km/h
The windiest month (with the highest average wind speed) is July (16.5km/h).
The calmest month (with the lowest average wind speed) is March (8.2km/h).
Average humidity in September
Lailunggi, Indonesia
- Average humidity in September: 73%
The months with the highest relative humidity are January, February and March (81%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Lailunggi, Indonesia
- Average rainfall in September: 6mm
The wettest month (with the highest rainfall) is January (181mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in September
Lailunggi, Indonesia
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is January (29.7 days).
The month with the least rainy days is August (1.9 days).
Average sea temperature in September
Lailunggi, Indonesia
- Average sea temperature in September: 27°C
The best month for swimming (with the highest average sea temperature) is December (30.2°C).
The coldest months (with the lowest average sea temperature) are July and August (26.2°C).
Average daylight in September /
Average sunshine in September
Lailunggi, Indonesia
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 42min).
The month with the shortest days is June (Average daylight: 11h and 30min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is November (Average sunshine: 10h and 36min).
The month with the least sunshine is May (Average sunshine: 6h and 54min).
Average sunshine days in September
Lailunggi, Indonesia
- Average sunshine days in September: 23.9 days
The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is January (0.3 days).
Average UV index in September
Lailunggi, Indonesia
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, August, September, October, November and December (UV index 7).
The month with the lowest UV index is July (UV index 6).
Average cloud cover in September
Lailunggi, Indonesia
- Average cloud cover in September: 14
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 13).
Average visibility in September
Lailunggi, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
