September weather forecast
Tumby Bay, Australia

September

Weather in September

The first month of the spring, September, is an enjoyable month in Tumby Bay, Australia, with temperature in the range of an average low of 11.7°C (53.1°F) and an average high of 16.5°C (61.7°F).

Temperature

With the advent of September, Tumby Bay's high-temperatures adjust to a still refreshing 16.5°C (61.7°F), closely aligning with the preceding month. Tumby Bay, during September nights, records a temperature marginally cooler than the daytime average, at a fresh 11.7°C (53.1°F).

Humidity

July through September, with an average relative humidity of 70%, are the most humid months.

Rainfall

In Tumby Bay, during September, the rain falls for 12.3 days and regularly aggregates up to 27mm (1.06") of precipitation. In Tumby Bay, during the entire year, the rain falls for 139 days and collects up to 280mm (11.02") of precipitation.

Sea temperature

In Tumby Bay, in September, the average water temperature is 14.9°C (58.8°F).
Note: One needs to be cautious in 14.9°C (58.8°F) waters. 13°C (55.4°F) is already forbidding, but sub-10°C (14°F) can seriously disrupt your breathing and lead to a frigid shock, considering one's well-being.

Daylight

In Tumby Bay, the average length of the day in September is 11h and 53min.
On the first day of September, sunrise is at 6:43 am and sunset at 6:07 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 6:27 pm ACST.

Sunshine

In Tumby Bay, the average sunshine in September is 8h.

UV index

The months with the lowest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: The UV index of 4 during September translates into the following guidance:
Adopt protective measures - It is advised to guard against sun damage. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Frequently asked questions

What is the usual temperature for Tumby Bay in September?
The high-temperature during September is 16.5°C (61.7°F) and the low-temperature is 11.7°C (53.1°F).
What are the most humid months?
July through September, with an average relative humidity of 70%, are most humid months.
What is the average humidity in September?
The average relative humidity in September is 70%.
How much does it rain in September?
In Tumby Bay, during September, the rain falls for 12.3 days and regularly aggregates up to 27mm (1.06") of precipitation.
What is the sea water temperature in September?
In September, the average sea temperature is 14.9°C (58.8°F). Swimming in 14.9°C (58.8°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
What is the average length of the day in September?
The average day length in September is 11h and 53min.
What time are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 6:43 am and sunset at 6:07 pm. On the last day of the month, in Tumby Bay, sunrise is at 6:03 am and sunset at 6:27 pm ACST.
How many hours of sunshine does Tumby Bay have in September?
The average sunshine duration in September is 8h.
What are the months with the lowest UV index?
May through September, with an average maximum UV index of 4, are months with the lowest UV index.
How high is the UV index in September?
In Tumby Bay, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Tumby Bay, Australia
  • Average high temperature in September: 16.5°C

The warmest month (with the highest average high temperature) is January (23.7°C).
The month with the lowest average high temperature is July (15.2°C).

  • Average low temperature in September: 11.7°C

The month with the highest average low temperature is February (18.4°C).
The coldest month (with the lowest average low temperature) is August (11.4°C).

Average pressure in September
Tumby Bay, Australia
  • Average pressure in September: 1017.6mbar

The month with the highest atmospheric pressure is June (1021.6mbar).
The month with the lowest atmospheric pressure is January (1013.1mbar).

Average wind speed in September
Tumby Bay, Australia
  • Average wind speed in September: 22.3km/h

The windiest month (with the highest average wind speed) is August (23.3km/h).
The calmest month (with the lowest average wind speed) is April (18.3km/h).

Average humidity in September
Tumby Bay, Australia
  • Average humidity in September: 70%

The months with the highest relative humidity are July, August and September (70%).
The month with the lowest relative humidity is December (65%).

Average rainfall in September
Tumby Bay, Australia
  • Average rainfall in September: 27mm

The wettest month (with the highest rainfall) is June (40mm).
The driest month (with the least rainfall) is February (11mm).

Average rainfall days in September
Tumby Bay, Australia
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (5.8 days).

Average sea temperature in September
Tumby Bay, Australia
  • Average sea temperature in September: 14.9°C

The best month for swimming (with the highest average sea temperature) is February (20.7°C).
The coldest month (with the lowest average sea temperature) is August (14.7°C).

Average daylight in September /
Average sunshine in September
Tumby Bay, 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 0min

The month with the most sunshine is January (Average sunshine: 8h and 48min).
The month with the least sunshine is May (Average sunshine: 7h and 6min).

Average sunshine days in September
Tumby Bay, Australia
  • Average sunshine days in September: 11.8 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is June (9.6 days).

Average UV index in September
Tumby Bay, Australia
  • Average UV index in September: 4

The months with the highest UV index are January 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
Tumby Bay, Australia
  • Average cloud cover in September: 34

The month with the most cloud cover is May (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 25).

Average visibility in September
Tumby Bay, 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).

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