September weather forecast
Kowo, Indonesia

September

Weather in September

September, the first month of the spring in Kowo, is still a warm month, with temperature in the range of an average high of 29.7°C (85.5°F) and an average low of 22.3°C (72.1°F).

Temperature

Kowo experiences an average high-temperature of a still moderately hot 29.7°C (85.5°F) with the onset of September, subtly varied from August's 28.4°C (83.1°F). Kowo records an average temperature drop to an agreeable 22.3°C (72.1°F) in September.

Heat index

For September, the heat index is appraised at a fiery hot 36°C (96.8°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

The average relative humidity in September is 76%.

Rainfall

In Kowo, in September, during 6.1 rainfall days, 14mm (0.55") of precipitation is typically accumulated. In Kowo, during the entire year, the rain falls for 229.6 days and collects up to 1680mm (66.14") of precipitation.

Sea temperature

In Kowo, Indonesia, in September, the average water temperature is 27.3°C (81.1°F).
Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of September, sunrise is at 06:05 and sunset at 18:02. On the last day of the month, sunrise is at 05:48 and sunset at 17:59 WITA.

Sunshine

The average sunshine in September is 10.7h.

UV index

January through May, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Caution! The mirror effect of sand and water ups the UV radiation strength.

Frequently asked questions

How hot is it in September?
The high-temperature during September is 29.7°C (85.5°F) and the low-temperature is 22.3°C (72.1°F). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 36°C (96.8°F).
What is the average humidity in September in Kowo?
The average relative humidity in September is 76%.
How many days does it rain in September?
In Kowo, in September, during 6.1 rainfall days, 14mm (0.55") of precipitation is typically accumulated.
How warm is the water in September?
In Kowo, in September, the average water temperature is 27.3°C (81.1°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.
What is the average length of the day in September?
In September, the average day length is 12h and 4min.
When are sunrise and sunset in September?
On the first day of September, sunrise is at 06:05 and sunset at 18:02. On the last day of the month, sunrise is at 05:48 and sunset at 17:59 WITA.
How long on average sun shines in September?
In September, the average sunshine duration is 10.7h.
When is the highest UV index?
The months with the highest UV index are January through May, September through December, with an average maximum UV index of 7.
What is the UV index intensity in September?
In Kowo, the average daily maximum UV index in September is 7. A UV Index reading 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 sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Kowo, Indonesia
Average temperature in September
Kowo, Indonesia
  • Average high temperature in September: 29.7°C

The warmest month (with the highest average high temperature) is October (31.1°C).
The month with the lowest average high temperature is July (27.6°C).

  • Average low temperature in September: 22.3°C

The month with the highest average low temperature is December (24.5°C).
The coldest month (with the lowest average low temperature) is August (21.5°C).

Average pressure in September - Kowo, Indonesia
Average pressure in September
Kowo, Indonesia
  • Average pressure in September: 1011.9mbar

The month with the highest atmospheric pressure is August (1012.1mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).

Average wind speed in September - Kowo, Indonesia
Average wind speed in September
Kowo, Indonesia
  • Average wind speed in September: 9.3km/h

The windiest month (with the highest average wind speed) is July (10.8km/h).
The calmest month (with the lowest average wind speed) is March (5.8km/h).

Average humidity in September - Kowo, Indonesia
Average humidity in September
Kowo, Indonesia
  • Average humidity in September: 76%

The months with the highest relative humidity are February and March (86%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September - Kowo, Indonesia
Average rainfall in September
Kowo, Indonesia
  • Average rainfall in September: 14mm

The wettest month (with the highest rainfall) is January (288mm).
The driest month (with the least rainfall) is August (6mm).

Average rainfall days in September - Kowo, Indonesia
Average rainfall days in September
Kowo, Indonesia
  • Average rainfall days in September: 6.1 days

The month with the highest number of rainy days is January (30.3 days).
The month with the least rainy days is August (4.8 days).

Average sea temperature in September - Kowo, Indonesia
Average sea temperature in September
Kowo, Indonesia
  • Average sea temperature in September: 27.3°C

The best month for swimming (with the highest average sea temperature) is December (30°C).
The coldest month (with the lowest average sea temperature) is July (26.7°C).

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

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: 10h and 4min

The month with the most sunshine is November (Average sunshine: 11h and 0min).
The month with the least sunshine is May (Average sunshine: 6h and 36min).

Average sunshine days in September - Kowo, Indonesia
Average sunshine days in September
Kowo, Indonesia
  • Average sunshine days in September: 22.1 days

The month with the most sunshine days is August (23.6 days).
The month with the least sunshine days is January (0.3 days).

Average UV index in September - Kowo, Indonesia
Average UV index in September
Kowo, Indonesia
  • Average UV index in September: 7

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

Average cloud cover in September - Kowo, Indonesia
Average cloud cover in September
Kowo, Indonesia
  • Average cloud cover in September: 18

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is September (Cloud cover 18).

Average visibility in September - Kowo, Indonesia
Average visibility in September
Kowo, Indonesia
  • Average visibility in September: 10km

The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).

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