Phillip Island Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Phillip Island, Australia in August.

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Cowes Rhyll

Planning a trip to Phillip Island, Australia this August? Here's what you need to know about the weather:

What to Expect in Phillip Island in August

Phillip Island, Australia is a region in Australia. August in Phillip Island generally has mild temperatures, with moderate precipitation. The month of August is in the winter season.

Temperatures

You can expect mild maximum daytime temperatures of around 15°C (59°F) and nighttime temperatures around 9°C (48°F) in Cowes.

For specific regional insights in Phillip Island, Australia, refer to the map provided below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Cowes with an average of 87 mm (3.4 in) to moderate rainfall in Rhyll with 91 mm (3.6 in).

Average sunshine

Most places get a reasonable amount of sunshine. Take Cowes as an example - it receives around 166 hours of sunlight, offering a nice mix of sunny and partly cloudy days. Want to compare this with brighter destinations? Try our weather planner to explore your options.

Explore Phillip Island by month

Pick a month to see the average temperature, rainfall and sunshine in Phillip Island — and find the best time to visit. (based on Cowes)

January24°C (75°F) February24°C (75°F) March23°C (73°F) April20°C (68°F) May17°C (63°F) June15°C (59°F) This monthJuly14°C (57°F) August15°C (59°F) September16°C (61°F) October18°C (64°F) November20°C (68°F) December22°C (72°F)
Best Time to Visit Phillip Island →

Best Places to Visit in Phillip Island in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Phillip Island.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Phillip Island

What is the weather like in August for some of the most popular destinations in Phillip Island, Australia?

Temperature range in Phillip Island (August)

Precipitation variation in Phillip Island (August)

Cowes

In August Cowes generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« July
August
September »
July
August
September
Max temperature
14°C (57°F)
15°C (59°F)
16°C (61°F)
Min temperature
9°C (48°F)
9°C (48°F)
10°C (50°F)
Monthly sun hours
140 hours
166 hours
185 hours
Monthly rainfall
78 mm (3.1 in)
87 mm (3.4 in)
89 mm (3.5 in)
Monthly rainy days
11 days
11 days
11 days
Weather conditions
tolerable
tolerable
tolerable
Climate in Cowes →

Rhyll

In August Rhyll generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 9°C (48°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« July
August
September »
July
August
September
Max temperature
14°C (57°F)
15°C (59°F)
16°C (61°F)
Min temperature
9°C (48°F)
9°C (48°F)
10°C (50°F)
Monthly rainfall
82 mm (3.2 in)
91 mm (3.6 in)
92 mm (3.6 in)
Monthly rainy days
11 days
11 days
11 days
Weather conditions
tolerable
tolerable
tolerable
Climate in Rhyll →

Is your destination not in the list? Have a look at all destinations in Phillip Island, in Australia.

In our records: Australia August extremes

Notable August records observed across cities in Australia in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • Based on our data, the coldest August night in Australia dropped to -13°C (9°F) in Thredbo on August 18, 2025.
  • In our records, the coldest August daytime high in Australia was -5°C (23°F) in Thredbo on August 5, 2020.

Popular cities in August

Day & night temperatures, rainfall and average weather in Phillip Island in August.

City Weather Day temp Night temp Rainfall
Cowes 15°C (59°F) 9°C (48°F) 87 mm (3.4 in)
Rhyll 15°C (59°F) 9°C (48°F) 91 mm (3.6 in)

Phillip Island weather in August: frequently asked questions

What is the weather like in Phillip Island, Australia in August?

Phillip Island, Australia typically experiences tolerable weather in August, part of the winter season. Daytime highs in Cowes average around 15°C (59°F), and temperatures drop to about 9°C (48°F) at night.

What is the average temperature in Phillip Island, Australia in August?

Cowes averages a daytime maximum of 15°C (59°F) in August, with overnight lows close to 9°C (48°F).

Does Phillip Island, Australia get a lot of rain in August?

August is on the drier side in Phillip Island, Australia. Cowes averages only about 87 mm (3.4 in), with most days staying dry.

Is August a Good Time to Visit Phillip Island, Australia?

Given the typically tolerable weather conditions in Cowes, August may not be the ideal time to visit Phillip Island, Australia.

Generally speaking, the best visiting conditions can be found in January, February, March, April, November and December offering mostly perfect weather in Cowes. The weather in May, June, July, August and September, on the other hand, tends to be tolerable.

Interested in more climate information?

We have much more information about the climate in Phillip Island.

Weather and climate has detailed information for every country in the world. Are you going to Australia? Get detailed historical weather averages for many cities in Australia.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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