September weather forecastBlawong, Indonesia
September
Weather in September
The first month of the spring, September, is also a hot month in Blawong, Indonesia, with an average temperature fluctuating between 31.3°C (88.3°F) and 22.6°C (72.7°F).Temperature
At the onset of September, Blawong records an average high-temperature of a still hot 31.3°C (88.3°F), showing little deviation from the preceding month. Throughout September, the average low-temperature dips to an agreeable 22.6°C (72.7°F).Heat index
Throughout September, the heat index is computed to be a very hot 38°C (100.4°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.
Humidity
September and October, with an average relative humidity of 69%, are the least humid months.Rainfall
In Blawong, Indonesia, during September, the rain falls for 9.5 days and regularly aggregates up to 18mm (0.71") of precipitation. In Blawong, during the entire year, the rain falls for 222.3 days and collects up to 950mm (37.4") of precipitation.Daylight
In September, the average length of the day in Blawong, Indonesia, is 12h and 4min.On the first day of the month, sunrise is at 05:46 and sunset at 17:46. On the last day of September, sunrise is at 05:31 and sunset at 17:41 WIB.
Sunshine
August and September, with an average of 9.7h of sunshine, are months with the most sunshine in Blawong.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in Blawong, Indonesia, are January through December, with an average maximum UV index of 7. 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: A daily high UV index of 7 in September leads to these guidelines:
Deter overexposure. Protecting against the sun's effects is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Blawong, 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
Blawong, 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
Blawong, 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
Blawong, 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
Blawong, 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
Blawong, 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
Blawong, Indonesia
- Average daylight in September: 12h and 6min
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 42min
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
Blawong, 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
Blawong, 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
Blawong, 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
Blawong, 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).





