Williamstown Weather in May
May in Williamstown brings moderate temperatures, with highs of 17°C (63°F) and nights dropping to 10°C (50°F). Expect some rainfall, with around 53 mm (2.1 in) typical for the month.
Rainfall in Williamstown in May
Typically around 10 days of rainfall are expected, averaging 53 mm (2.1 in) for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Williamstown in May
In May, Williamstown sees moderate temperatures, with highs of 17°C (63°F). Nights drop to around 10°C (50°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Williamstown in May
The month experiences a moderate amount of sunlight, with 140 hours of sunshine. This provides a nice balance between sunshine and clouds.
Wind Speed in Williamstown in May
Wind speeds average 3 m/s (6 knots) during May. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.
Average water temperature in May
At 15°C (59°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.May in Williamstown has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Williamstown's climate page.
Williamstown Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
17°C (63°F)
Water Temperature
15°C (59°F) *
Chance of Rain
34%
Precipitation
53 mm (2.1 in)
Rainy days
10 days
Humidity
58% *
Windspeed
3 m/s (6 knots) *
Sunshine
140 hours *
Percentage Sunshine
46% *
Best Places in Australia in May
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in May →
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What to Wear in Williamstown in May
For Williamstown in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. With water temperatures around 15°C (59°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Williamstown in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Williamstown's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Williamstown climate overview or explore weather in Australia.
