Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The shift into September records an average high-temperature of a still warm 27.1°C (80.8°F), subtly varied from August's 26.6°C (79.9°F). Passo's nocturnal average in September closely mirrors its daytime temperatures, settling at a still moderately hot 25.2°C (77.4°F).Heat index
In September, the heat index is estimated at a tropical 30°C (86°F). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
The average relative humidity in September is 80%.Rainfall
September and October are months with the least rain when the rain falls for 19.4 days and typically aggregates up to 59mm (2.32") of rain.Sea temperature
In Passo, the average seawater temperature in September is 27.5°C (81.5°F).Note: For swimming, diving, and similar activities, the water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered delightful, allowing for extended periods of enjoyment without discomfort.
Daylight
In September, the average length of the day is 12h and 5min.On the first day of the month, sunrise is at 06:25 and sunset at 18:28. On the last day of September, sunrise is at 06:12 and sunset at 18:21 WIT.
Sunshine
In September, the average sunshine is 7.4h.UV index
January through May, August through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily UV index of 7 turns into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Stay cautious! Sand and water reflections increase UV radiation potency.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
How warm is the water in September?
How many hours of daylight does Passo have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Passo have in September?
When is the highest UV index?
How high is the UV index in September?
Average temperature in September
Passo, Indonesia
- Average high temperature in September: 27.1°C
The warmest month (with the highest average high temperature) is December (29.5°C).
The month with the lowest average high temperature is August (26.6°C).
- Average low temperature in September: 25.2°C
The month with the highest average low temperature is December (27.3°C).
The coldest month (with the lowest average low temperature) is August (24.7°C).
Average pressure in September
Passo, Indonesia
- Average pressure in September: 1010.9mbar
The month with the highest atmospheric pressure is August (1011.1mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in September
Passo, Indonesia
- Average wind speed in September: 14.6km/h
The windiest month (with the highest average wind speed) is July (19.2km/h).
The calmest month (with the lowest average wind speed) is November (8.4km/h).
Average humidity in September
Passo, Indonesia
- Average humidity in September: 80%
The month with the highest relative humidity is July (82%).
The months with the lowest relative humidity are November and December (74%).
Average rainfall in September
Passo, Indonesia
- Average rainfall in September: 59mm
The wettest month (with the highest rainfall) is June (232mm).
The driest months (with the least rainfall) are September and October (59mm).
Average rainfall days in September
Passo, Indonesia
- Average rainfall days in September: 19.4 days
The month with the highest number of rainy days is March (27.5 days).
The month with the least rainy days is October (18.4 days).
Average sea temperature in September
Passo, Indonesia
- Average sea temperature in September: 27.5°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 August (27.2°C).
Average daylight in September /
Average sunshine in September
Passo, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 11h and 54min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is November (Average sunshine: 9h and 0min).
The month with the least sunshine is July (Average sunshine: 5h and 54min).
Average sunshine days in September
Passo, Indonesia
- Average sunshine days in September: 6.2 days
The month with the most sunshine days is October (7.8 days).
The month with the least sunshine days is April (2.1 days).
Average UV index in September
Passo, Indonesia
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 7).
The months with the lowest UV index are June and July (UV index 6).
Average cloud cover in September
Passo, Indonesia
- Average cloud cover in September: 49
The month with the most cloud cover is July (Cloud cover 60).
The month with the least cloud cover is November (Cloud cover 30).
Average visibility in September
Passo, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is April (9km).
