September weather forecast
Lemahtamba, Indonesia

September

Weather in September

September, the first month of the spring in Lemahtamba, is still a hot month, with an average temperature fluctuating between 22.6°C (72.7°F) and 31.3°C (88.3°F).

Temperature

The onset of September marks an average high-temperature of a still tropical 31.3°C (88.3°F), hardly differing from August's 30.5°C (86.9°F). Throughout September, Lemahtamba registers a consistent average low-temperature of 22.6°C (72.7°F).

Heat index

Throughout September, the heat index is evaluated at a sweltering 38°C (100.4°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

September and October, with an average relative humidity of 69%, are the least humid months.

Rainfall

In September, the rain falls for 9.5 days. Throughout September, 18mm (0.71") of precipitation is accumulated. Throughout the year, in Lemahtamba, there are 222.3 rainfall days, and 950mm (37.4") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of September, sunrise is at 05:46 and sunset at 17:45. On the last day of the month, sunrise is at 05:31 and sunset at 17:40 WIB.

Sunshine

August and September, with an average of 9.7h of sunshine, are months with the most sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Lemahtamba. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 7 during September leads to these advisories:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Frequently asked questions

How hot is it in September?
In Lemahtamba, in September, the average high-temperature is 31.3°C (88.3°F), and the average low-temperature is 22.6°C (72.7°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is evaluated at 38°C (100.4°F).
What is the least humid month?
The months with the lowest humidity are September and October, with an average relative humidity of 69%.
What is the average humidity in September?
In September, the average relative humidity is 69%.
How many days does it rain in September?
In September, in Lemahtamba, the rain falls for 9.5 days. Throughout September, 18mm (0.71") of precipitation is accumulated.
What is the average length of the day in September?
In Lemahtamba, the average day length in September is 12h and 4min.
What time are sunrise and sunset in September?
On the first day of September, sunrise is at 05:46 and sunset at 17:45. On the last day of the month, sunrise is at 05:31 and sunset at 17:40 WIB.
What is the month with the most sunshine?
August and September, with an average of 9.7h of sunshine, are months with the most sunshine.
How long on average sun shines in September?
In September, the average sunshine duration is 9.7h.
What is the month with the highest UV index?
The months with the highest UV index are January through December, with an average maximum UV index of 7.
What is the month with the lowest UV index?
The months with the lowest UV index are January through December, with an average maximum UV index of 7.
What is the UV index reading in September?
In Lemahtamba, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Lemahtamba, Indonesia
  • Average high temperature in September: 31.3°C

The warmest month (with the highest average high temperature) is October (31.8°C).
The month with the lowest average high temperature is February (29.4°C).

  • Average low temperature in September: 22.6°C

The months with the highest average low temperature are November and December (25°C).
The coldest month (with the lowest average low temperature) is August (22.2°C).

Average pressure in September
Lemahtamba, Indonesia
  • Average pressure in September: 1011.4mbar

The month with the highest atmospheric pressure is September (1011.4mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).

Average wind speed in September
Lemahtamba, Indonesia
  • Average wind speed in September: 12.2km/h

The windiest month (with the highest average wind speed) is August (12.7km/h).
The calmest month (with the lowest average wind speed) is April (6.9km/h).

Average humidity in September
Lemahtamba, Indonesia
  • Average humidity in September: 69%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are September and October (69%).

Average rainfall in September
Lemahtamba, Indonesia
  • Average rainfall in September: 18mm

The wettest month (with the highest rainfall) is December (146mm).
The driest month (with the least rainfall) is August (10mm).

Average rainfall days in September
Lemahtamba, Indonesia
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is December (25.5 days).
The month with the least rainy days is August (6.5 days).

Average daylight in September /
Average sunshine in September
Lemahtamba, Indonesia
  • Average daylight in September: 12h and 1min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in September: 9h and 4min

The months with the most sunshine are August and September (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 8h and 12min).

Average sunshine days in September
Lemahtamba, Indonesia
  • Average sunshine days in September: 17.8 days

The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is December (3.5 days).

Average UV index in September
Lemahtamba, Indonesia
  • Average UV index in September: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in September
Lemahtamba, Indonesia
  • Average cloud cover in September: 19

The months with the most cloud cover are January and February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 17).

Average visibility in September
Lemahtamba, Indonesia
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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