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 average high-temperature for September is an enjoyable 16.4°C (61.5°F), closely aligning with the temperature of the preceding month. The low-temperature averages to a fresh 10.7°C (51.3°F) during the nights of September.Humidity
In September, the average relative humidity in Birkenhead is 69%.Rainfall
In Birkenhead, in September, during 9.8 rainfall days, 21mm (0.83") of precipitation is typically accumulated. In Birkenhead, during the entire year, the rain falls for 107.3 days and collects up to 277mm (10.91") of precipitation.Sea temperature
In September, the average sea temperature in Birkenhead is 14.3°C (57.7°F).Note: It is life-risking to swim in 14.3°C (57.7°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
The average length of the day in September in Birkenhead is 11h and 52min.On the first day of September in Birkenhead, Australia, sunrise is at 6:34 am and sunset at 5:57 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 6:18 pm ACST.
Sunshine
The average sunshine in September in Birkenhead is 8.1h.UV index
May through September, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 4 during September translates into the following guidance:
Ensure safety - Imperative it is to shield skin and eyes from damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Birkenhead?
What is the average humidity in September in Birkenhead?
How many days does it rain in September in Birkenhead?
How cold is the water in September in Birkenhead?
How many hours of daylight does Birkenhead have in September?
What time are sunrise and sunset in September in Birkenhead?
How long on average sun shines in September in Birkenhead?
What is the month with the lowest UV index in Birkenhead?
How high is the UV index in September in Birkenhead?
Average temperature in September
Birkenhead, Australia
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is January (25.9°C).
The month with the lowest average high temperature is July (14.2°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is January (18.3°C).
The coldest month (with the lowest average low temperature) is August (10°C).
Average pressure in September
Birkenhead, Australia
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is June (1021.8mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).
Average wind speed in September
Birkenhead, Australia
- Average wind speed in September: 16.6km/h
The windiest month (with the highest average wind speed) is August (17.5km/h).
The calmest month (with the lowest average wind speed) is April (13.9km/h).
Average humidity in September
Birkenhead, Australia
- Average humidity in September: 69%
The month with the highest relative humidity is July (73%).
The month with the lowest relative humidity is January (58%).
Average rainfall in September
Birkenhead, Australia
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is August (35mm).
The driest months (with the least rainfall) are January, February and March (14mm).
Average rainfall days in September
Birkenhead, Australia
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is February (4.8 days).
Average sea temperature in September
Birkenhead, Australia
- Average sea temperature in September: 14.3°C
The best months for swimming (with the highest average sea temperature) are January and February (21.3°C).
The coldest month (with the lowest average sea temperature) is August (13.7°C).
Average daylight in September /
Average sunshine in September
Birkenhead, Australia
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is December (Average sunshine: 10h and 6min).
The month with the least sunshine is August (Average sunshine: 7h and 12min).
Average sunshine days in September
Birkenhead, Australia
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is July (15.8 days).
Average UV index in September
Birkenhead, Australia
- Average UV index in September: 4
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).
Average cloud cover in September
Birkenhead, Australia
- Average cloud cover in September: 32
The months with the most cloud cover are May and July (Cloud cover 40).
The month with the least cloud cover is January (Cloud cover 19).
Average visibility in September
Birkenhead, 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).
