Weather in Great Barrier Reef, Australia in September

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Visiting Great Barrier Reef, Australia in September

September is one of the best months to visit Great Barrier Reef for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

The weather in September is marginally warmer than the previous month and temperatures continue to rise slightly into October. September has average maximum temperatures of 28°C (83°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 45.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.5 hours of sunshine per day.

September has total rainfall of 3.1cm (1.2inches) making it mostly dry but with short lived occasional showers. There are only 10.5 days with some rainfall so you can still enjoy the beach on the majority of days.

Sea temperatures are a warm 25°C (77°F). September is a good month for swimming in Great Barrier Reef with comfortable temperatures for most people. The sea temperature in September is marginally warmer than the previous month and temperatures continue to rise slightly into October.

Also consider visiting Great Barrier Reef in one of the other best months of July, August, October, for the best beach weather. Also consider one of our other suggestions for September.

Can you sunbathe in Great Barrier Reef in September?

Yes, September is a good time for sunbathing in Great Barrier Reef.

September has average maximum temperatures of 28°C (83°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 45.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.5 hours of sunshine per day. September has total rainfall of 3.1cm (1.2inches) making it mostly dry but with short lived occasional showers. There are only 10.5 days with some rainfall so you can still enjoy the beach on the majority of days.

More about September temperature and sunshine.

Can you swim in Great Barrier Reef in September?

Yes, September is a good month for swimming in Great Barrier Reef with warm sea temperatures 25°C (77°F).

More about September sea temperatures.

Is September a good time to holiday in Great Barrier Reef?

Yes, September is a good time for a holiday in Great Barrier Reef.

September has average maximum temperatures of 28°C (83°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 45.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.5 hours of sunshine per day. September has total rainfall of 3.1cm (1.2inches) making it mostly dry but with short lived occasional showers. There are only 10.5 days with some rainfall so you can still enjoy the beach on the majority of days. Sea temperatures are a warm 25°C (77°F). September is a good month for swimming in Great Barrier Reef with comfortable temperatures for most people.

More about the September temperatures and sunshine.

Is Great Barrier Reef warm in September?

Yes, Great Barrier Reef is very warm and perfect for sunbathing on clear days in September.

The average maximum temperature in Great Barrier Reef in September is 28°C (83°F). The average maximum temperature is 27°C (80°) in the previous month and 29°C (85°F) in the next month.

The average temperature in Great Barrier Reef in September is 23°C (74°F). The average temperature is 22°C (71°F) in the previous month and 25°C (77°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Great Barrier Reef in September?

The average day light hours per day in Great Barrier Reef in September are 12. The sunshine percentage is 45.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.5 hours of sunshine per day.

More about September sunshine.

Temperature in Great Barrier Reef in September

The weather in September is marginally warmer than the previous month and temperatures continue to rise slightly into October. The average maximum temperature in Great Barrier Reef in September is 28°C (83°F). The average maximum temperature is 27°C (80°F) in the previous month and 29°C (85°F) in the next month.

The average temperature in Great Barrier Reef in September is 23°C (74°F). The average temperature is 22°C (71°F) in the previous month and 25°C (77°F) in the next month.

The average minimum temperature in Great Barrier Reef in September is 19°C (67°F). The minimum temperature is 17°C (63°F) in the previous month and 21°C (70°F) in the next month.

Sunshine in Great Barrier Reef in September

The days in September are marginally longer than the previous month and the days continue to get marginally longer into October. September has a slightly more hours of sunshine than the previous month. During September the average day light hours are 12 per day in Great Barrier Reef. The sunshine percentage is 45.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.5 hours of sunshine per day.

The ultraviolet index in Great Barrier Reef in September is typically 12.6 during September. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Great Barrier Reef in September

The average sea water temperature in Great Barrier Reef in September is 24.9°C (76.8°F) which is warm and pleasant for relaxing and swimming for long periods. The sea temperature in September is marginally warmer than the previous month and temperatures continue to rise slightly into October.

Rainfall in Great Barrier Reef in September

September weather is marginally wetter than the previous month and rainfall continues to rise into October. September has a couple of more days of rain than the previous month and rainy days continue to rise slightly into October. The average total rainfall in Great Barrier Reef in September is 3.1cm (1.2inches) and on average there are 10.5 rainy days in September making it a pretty wet time to visit the beach.

Humidity in Great Barrier Reef in September

The maximum dew point (an indicator of humidity) in Great Barrier Reef in September is 19°C (66°F) which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 17°C (63°F) in the previous month and 21°C (21°F) in the next month.

The average maximum relative humidity in Great Barrier Reef in September is typically 90.1%. The maximum relative humidity is 90% in the previous month and 89.3% in the next month.

The average relative humidity in Great Barrier Reef in September is typically 69.6%. The average relative humidity is 69.1% in the previous month and 69.9% in the next month.

Wind Speed in Great Barrier Reef in September

The average maximum wind speed in Great Barrier Reef in September is typically 28KM/H (17MPH). The average maximum wind speed is 29KM/H (18MPH) in the previous month and 28KM/H (18MPH) in the next month.

The average wind speed in Great Barrier Reef in September is typically 14KM/H (9MPH). The average wind speed is 15KM/H (10MPH) in the previous month and 15KM/H (9MPH) in the next month.

The average wind direction in Great Barrier Reef in September is from the South East.

Monthly Averages

Suggested Beaches in September

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.