September weather forecastKarratha, Australia
September
Weather in September
The first month of the spring, September, is also a moderately hot month in Karratha, Australia, with temperature in the range of an average low of 21.7°C (71.1°F) and an average high of 28.6°C (83.5°F).Temperature
September brings an average high-temperature of a still moderately hot 28.6°C (83.5°F), showing a slight difference from August's 26.7°C (80.1°F). The mean low-temperature during September nights in Karratha is an agreeable 21.7°C (71.1°F).Heat index
Throughout September, the heat index is estimated at 29°C (84.2°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Heat index values are typically calculated for conditions of shade and a light breeze. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Humidity
The months with the lowest humidity in Karratha, Australia, are July through October, with an average relative humidity of 46%.Rainfall
August through October are months with the least rain when the rain falls for 0.6 days and typically aggregates up to 1mm (0.04") of rain.Daylight
In Karratha, Australia, the average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 6:21 am and sunset at 6:03 pm. On the last day of September, sunrise is at 5:54 am and sunset at 6:10 pm AWST.
Sunshine
In Karratha, the average sunshine in September is 10.3h.UV index
The average daily maximum UV index in September in Karratha is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 7 in September translates into this advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Karratha, Australia
- Average high temperature in September: 28.6°C
The warmest month (with the highest average high temperature) is March (34.2°C).
The month with the lowest average high temperature is July (25.7°C).
- Average low temperature in September: 21.7°C
The month with the highest average low temperature is March (28.9°C).
The coldest month (with the lowest average low temperature) is July (19.8°C).
Average pressure in September
Karratha, Australia
- Average pressure in September: 1014.5mbar
The month with the highest atmospheric pressure is July (1016.9mbar).
The month with the lowest atmospheric pressure is January (1005mbar).
Average wind speed in September
Karratha, Australia
- Average wind speed in September: 19.5km/h
The windiest month (with the highest average wind speed) is November (21.8km/h).
The calmest month (with the lowest average wind speed) is April (17.1km/h).
Average humidity in September
Karratha, Australia
- Average humidity in September: 46%
The month with the highest relative humidity is January (62%).
The months with the lowest relative humidity are July, August, September and October (46%).
Average rainfall in September
Karratha, Australia
- Average rainfall in September: 1mm
The wettest month (with the highest rainfall) is February (67mm).
The driest months (with the least rainfall) are August, September and October (1mm).
Average rainfall days in September
Karratha, Australia
- Average rainfall days in September: 0.6 days
The month with the highest number of rainy days is January (9.3 days).
The month with the least rainy days is October (0.5 days).
Average daylight in September /
Average sunshine in September
Karratha, Australia
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in September: 10h and 18min
The month with the most sunshine is November (Average sunshine: 12h and 18min).
The month with the least sunshine is June (Average sunshine: 7h and 12min).
Average sunshine days in September
Karratha, Australia
- Average sunshine days in September: 29.2 days
The month with the most sunshine days is August (30 days).
The month with the least sunshine days is January (20.5 days).
Average UV index in September
Karratha, Australia
- Average UV index in September: 7
The months with the highest UV index are February, March, October and December (UV index 8).
The months with the lowest UV index are May, June, July and August (UV index 6).
Average cloud cover in September
Karratha, Australia
- Average cloud cover in September: 3
The month with the most cloud cover is January (Cloud cover 19).
The month with the least cloud cover is September (Cloud cover 3).
Average visibility in September
Karratha, Australia
- 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).
