September weather forecastSendangsari, Indonesia

September

Weather in September

The first month of the spring, September, is still a warm month in Sendangsari, Indonesia, with an average temperature varying between 29.7°C (85.5°F) and 20.8°C (69.4°F).

Temperature

The arrival of September sees a recorded average high-temperature of a still warm 29.7°C (85.5°F), showing little divergence from the previous month's conditions. Sendangsari sees an average low-temperature of 20.8°C (69.4°F) during September.

Heat index

For most parts of September, the heat index is evaluated at a sweltering 36°C (96.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values remain especially vital 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.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

With an average relative humidity of 77%, September is the least humid month.

Rainfall

In Sendangsari, in September, during 15.8 rainfall days, 53mm (2.09") of precipitation is typically accumulated. Throughout the year, there are 290.8 rainfall days, and 2049mm (80.67") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of September, sunrise is at 05:39 and sunset at 17:37. On the last day of the month, sunrise is at 05:23 and sunset at 17:33 WIB.

Sunshine

In September, the average sunshine is 8.9h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 during September leads to these advisories:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

In September, the average high-temperature and low-temperature are 29.7°C (85.5°F) and 20.8°C (69.4°F) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in September is evaluated at 36°C (96.8°F).

September is the least humid month, with an average relative humidity of 77%.

The average relative humidity in September in Sendangsari is 77%.

In September, the rain falls for 15.8 days. Throughout September, 53mm (2.09") of precipitation is accumulated.

In September, the average day length is 12h and 4min.

In September, on the first day of the month, sunrise is at 05:39 and sunset at 17:37. On the last day of the month, sunrise is at 05:23 and sunset at 17:33 WIB.

The average sunshine duration in September is 8.9h.

The months with the lowest UV index are January through September, November and December, with an average maximum UV index of 6.

In Sendangsari, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.
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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sendangsari, Indonesia

  • Average high temperature in September: 29.7°C

The warmest month (with the highest average high temperature) is October (30.2°C).
The month with the lowest average high temperature is July (28.1°C).

  • Average low temperature in September: 20.8°C

The month with the highest average low temperature is November (22.5°C).
The coldest month (with the lowest average low temperature) is August (20.4°C).

Average pressure in September
Sendangsari, Indonesia

  • Average pressure in September: 1011.7mbar

The months with the highest atmospheric pressure are August and September (1011.7mbar).
The month with the lowest atmospheric pressure is December (1009mbar).

Average wind speed in September
Sendangsari, Indonesia

  • Average wind speed in September: 10km/h

The windiest months (with the highest average wind speed) are August and September (10km/h).
The calmest month (with the lowest average wind speed) is April (5.9km/h).

Average humidity in September
Sendangsari, Indonesia

  • Average humidity in September: 77%

The months with the highest relative humidity are January, February, March, April and May (85%).
The month with the lowest relative humidity is September (77%).

Average rainfall in September
Sendangsari, Indonesia

  • Average rainfall in September: 53mm

The wettest month (with the highest rainfall) is March (291mm).
The driest month (with the least rainfall) is August (27mm).

Average rainfall days in September
Sendangsari, Indonesia

  • Average rainfall days in September: 15.8 days

The month with the highest number of rainy days is March (30.5 days).
The month with the least rainy days is August (12.2 days).

Average daylight in September /
Average sunshine in September
Sendangsari, Indonesia

  • 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 42min).

  • Average sunshine in September: 8h and 54min

The month with the most sunshine is August (Average sunshine: 9h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).

Average sunshine days in September
Sendangsari, Indonesia

  • Average sunshine days in September: 9.4 days

The month with the most sunshine days is August (14.4 days).
The months with the least sunshine days are January, February and March (0.3 days).

Average UV index in September
Sendangsari, Indonesia

  • Average UV index in September: 6

The month with the highest UV index is October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).

Average cloud cover in September
Sendangsari, Indonesia

  • Average cloud cover in September: 37

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in September
Sendangsari, Indonesia

  • Average visibility in September: 9km

The months with the highest visibility are June, July, August, September, October and December (9km).
The months with the lowest visibility are January, February, March, April, May and November (8km).