Weather in Perth in May 2025
Average weather
Average temperature in Perth in May
Going from a maximum of +82°F during the day to a minimum of +36°F during the night, the temperature in May averages around +72°F.
The average maximum temperature goes down 8% by the end of the month, compared with the beginning of the month, from +73°F to +70°F.
Is Perth warm or cold in May?
Perth is typically mild in May.
Maximum temperatures go down compared to the previous month from +77°F to +70°F. The minimum temperature also goes down from +59°F to +54°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Perth:
Water temperature in Perth in May
Water in Perth in May is Comfortable. It varies from +69°F to +74°F, with an average of +71°F. Note that the air temperature is lower than the water temperature, averaging around +70°F.
In May, water temperatures are average relative to the rest of the year:
Can you swim in Perth in May?
Climate in Perth in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +77°F | +70°F | +64°F | ||||
| Min. temperature | ||||||
| +39°F | +34°F | +32°F | ||||
| Max. temperature | ||||||
| +100°F | +90°F | +77°F | ||||
| Rainfall | ||||||
| 31 mm | 76 mm | 110 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +73°F | +71°F | +70°F | ||||
| Humidity | ||||||
| 64% | 70% | 74% | ||||
| Air pressure | ||||||
| 1016 HPa | 1018 HPa | 1018 HPa | ||||
| Sunny days | ||||||
| 14 | 11 | 9 | ||||
| Cloudy days | ||||||
| 8 | 8 | 5 | ||||
| Rainy days | ||||||
| 8 | 11 | 15 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May weather is still as good as in April. It’s getting colder in May. From +77°F in the day, the average maximum temperature lowers to +70°F. Prepare for more rain. Average rainfall goes from 31 mm to 76 mm. Humidity rises from 64% to 70%. The average wind speed doesn’t change much during May, staying around 4 m/s. The days becoming less sunny, going from 14 sunny days in April to 11 in May.
June brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Perth is gradually decreasing during May, going from 4 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in Perth?
Climate Change Over the Years
The climate in Perth in May has not changed that much over the last 43 years.
The average temperature was the lowest in 1990 (+72°F) and the highest in 2023 (+78°F). The driest year was 2010 with only 285 mm of rainfall, and the wettest year was 2012 with 1017 mm.
FAQ
Is May a good time to visit Perth?
Can you sunbathe in Perth in May?
Can you swim in Perth in May?
Is Perth rainy in May?
Is it sunny in Perth in May?
Other cities in Australia
Monthly weather in Perth
Source of the data
For this page, we’ve looked at the typical weather in Perth, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.