September weather forecastManahan, Indonesia
September
Weather in September
September, the first month of the spring in Manahan, is a tropical month, with an average temperature fluctuating between 20.9°C (69.6°F) and 30.3°C (86.5°F).Temperature
Manahan starts September with an average high-temperature of a hot 30.3°C (86.5°F), a minor shift from August's 29.5°C (85.1°F). Throughout September, Manahan witnesses a consistent average low-temperature of 20.9°C (69.6°F).Heat index
For September, the heat index is calculated to be a sweltering 37°C (98.6°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Heat index determinations are made taking into account the shade and light air movements. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
The months with the lowest humidity in Manahan are September and October, with an average relative humidity of 74%.Rainfall
In September, in Manahan, the rain falls for 13.6 days. Throughout September, 48mm (1.89") of precipitation is accumulated. In Manahan, during the entire year, the rain falls for 276.6 days and collects up to 2049mm (80.67") of precipitation.Daylight
The average length of the day in September in Manahan, Indonesia, is 12h and 4min.On the first day of September in Manahan, sunrise is at 05:37 and sunset at 17:35. On the last day of the month, sunrise is at 05:21 and sunset at 17:31 WIB.
Sunshine
August and September, with an average of 9.2h of sunshine, are months with the most sunshine.UV index
September and October, with an average maximum UV index of 7, are months with the highest UV index in Manahan. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 7 in September translates into this advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Manahan, Indonesia
- Average high temperature in September: 30.3°C
The warmest month (with the highest average high temperature) is October (31.4°C).
The month with the lowest average high temperature is July (28.4°C).
- Average low temperature in September: 20.9°C
The month with the highest average low temperature is November (22.7°C).
The coldest month (with the lowest average low temperature) is August (20.3°C).
Average pressure in September
Manahan, Indonesia
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is September (1011.7mbar).
The month with the lowest atmospheric pressure is December (1009mbar).
Average wind speed in September
Manahan, Indonesia
- Average wind speed in September: 9.1km/h
The windiest month (with the highest average wind speed) is August (9.3km/h).
The calmest month (with the lowest average wind speed) is April (5.6km/h).
Average humidity in September
Manahan, Indonesia
- Average humidity in September: 74%
The months with the highest relative humidity are January, February, March and April (85%).
The months with the lowest relative humidity are September and October (74%).
Average rainfall in September
Manahan, Indonesia
- Average rainfall in September: 48mm
The wettest month (with the highest rainfall) is March (313mm).
The driest month (with the least rainfall) is August (29mm).
Average rainfall days in September
Manahan, Indonesia
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is January (30.5 days).
The month with the least rainy days is August (8.9 days).
Average daylight in September /
Average sunshine in September
Manahan, 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: 9h and 12min
The months with the most sunshine are August and September (Average sunshine: 9h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 0min).
Average sunshine days in September
Manahan, Indonesia
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is August (19.4 days).
The month with the least sunshine days is February (0.2 days).
Average UV index in September
Manahan, Indonesia
- Average UV index in September: 7
The months with the highest UV index are September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, November and December (UV index 6).
Average cloud cover in September
Manahan, Indonesia
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Manahan, Indonesia
- Average visibility in September: 9km
The months with the highest visibility are June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, April, May, November and December (8km).
