Hottest (avg)
#8 / 12
Perth in May
May weather, climate averages, and packing tips.
Avg High
Avg Low
Rain
Daylight 10h
What to expect
May marks a typically mild period of autumn, where temperatures are dropping quickly. Daytime highs average 21°C / 70°F, dropping to 13°C / 55°F at night.
Skies are often changeable, and you should be prepared for regular rainfall (approx. 10 wet days).
May in context
How it compares to the rest of the year in Perth.
Wettest (avg)
#4 / 12
Daylight Hours
#10 / 12
Windiest (avg)
#12 / 12
Highest UV
#10 / 12
Most Humid
#5 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 10.5 hours
- UV index (max)
- 5
- Typical sun hours
- 06:58 – 17:27
Rain & Snow
- Total
-
- Rainy days
- 10
- Cloud cover
- 45%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 69%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is May a good time to visit Perth?
Typical May days in Perth reach highs of 21°C (70°F) with nights around 13°C (55°F). It usually feels mild by day and cool after dark. Overall, May sits in the middle of the Perth climate range.
What are temperatures like in May?
Daytime temperatures in May typically peak near 21°C (70°F), while nights drop to around 13°C (55°F). Expect mild afternoons and cool evenings.
How much does it rain in May?
Rainfall in May averages 73 mm (2.9 in) across roughly 10 days. Overall it is a quite rainy time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in May?
You can expect about 10 hours of daylight in May. Sunrise is typically around 06:58 and sunset near 17:27. Days are on the shorter side, so plan activities around limited daylight.
Does the weather change during May?
May usually begins milder and cools down as the month goes on, so late-May can feel more like the next month.
How strong is the sun in May?
UV levels are moderate (around 5); sunscreen and sunglasses are still a good idea.
Is it windy in May?
In May, average wind speeds are around 15 km/h (9 mph), with gusts on the windiest days reaching about 57 km/h (35 mph). On the ground, it is it can feel quite windy at times, particularly when weather systems move through.