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 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 commencement of September notes an average high-temperature of a still moderately hot 28°C (82.4°F), exhibiting little difference from the previous month. In Hisiu, the nighttime temperature averages to a pleasant 22.7°C (72.9°F) during September.Heat index
In September, the heat index is evaluated at a tropical 32°C (89.6°F). If one remains active during constant exposure, it might cause exhaustion and heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In Hisiu, Papua New Guinea, the average relative humidity in September is 78%.Rainfall
In Hisiu, Papua New Guinea, in September, during 20 rainfall days, 82mm (3.23") of precipitation is typically accumulated. Throughout the year, there are 249.8 rainfall days, and 1311mm (51.61") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 3min.On the first day of September, sunrise is at 06:14 and sunset at 18:11. On the last day of the month, sunrise is at 05:57 and sunset at 18:08 +10.
Sunshine
In September, the average sunshine is 9.3h.UV index
February, June through September, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 6 during September leads to these instructions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Hisiu have in September?
When is the lowest UV index?
What is the UV index reading in September?
Average temperature in September
Hisiu, Papua New Guinea
- Average high temperature in September: 28°C
The warmest month (with the highest average high temperature) is December (30.2°C).
The months with the lowest average high temperature are July and August (27.6°C).
- Average low temperature in September: 22.7°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 (22.5°C).
Average pressure in September
Hisiu, Papua New Guinea
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is August (1012.1mbar).
The month with the lowest atmospheric pressure is January (1007.9mbar).
Average wind speed in September
Hisiu, Papua New Guinea
- Average wind speed in September: 17.2km/h
The windiest month (with the highest average wind speed) is July (18.9km/h).
The calmest month (with the lowest average wind speed) is December (9.7km/h).
Average humidity in September
Hisiu, Papua New Guinea
- Average humidity in September: 78%
The months with the highest relative humidity are May and June (80%).
The months with the lowest relative humidity are January and February (73%).
Average rainfall in September
Hisiu, Papua New Guinea
- Average rainfall in September: 82mm
The wettest month (with the highest rainfall) is March (203mm).
The driest month (with the least rainfall) is July (46mm).
Average rainfall days in September
Hisiu, Papua New Guinea
- Average rainfall days in September: 20 days
The month with the highest number of rainy days is March (24.6 days).
The month with the least rainy days is July (14.7 days).
Average daylight in September /
Average sunshine in September
Hisiu, Papua New Guinea
- 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: 9h and 2min
The month with the most sunshine is November (Average sunshine: 11h and 18min).
The month with the least sunshine is May (Average sunshine: 7h and 6min).
Average sunshine days in September
Hisiu, Papua New Guinea
- Average sunshine days in September: 7.9 days
The month with the most sunshine days is July (13.4 days).
The months with the least sunshine days are March and April (5.2 days).
Average UV index in September
Hisiu, Papua New Guinea
- Average UV index in September: 6
The months with the highest UV index are January, March, April, May, October, November and December (UV index 7).
The months with the lowest UV index are February, June, July, August and September (UV index 6).
Average cloud cover in September
Hisiu, Papua New Guinea
- Average cloud cover in September: 34
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is November (Cloud cover 28).
Average visibility in September
Hisiu, Papua New Guinea
- 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).
