Perth’s Mediterranean climate delivers hot, dry summers and cool, wet winters — but the real-time gap between suburbs can reach 16°C. This guide walks through current conditions, seasonal patterns, and how to verify live data from the Bureau of Meteorology (Australia’s official weather authority).

4 related posts

Average January high temperature: 31°C ·
Average July low temperature: 8°C ·
Rainiest month: July (170 mm) ·
Coldest month: July (average 13°C) ·
Best month to visit: December to March (summer)

Quick snapshot

1Confirmed facts
2What’s unclear
  • Exact current temperature requires checking live BoM observations (Bureau of Meteorology (Australia’s official weather authority))
  • Precise timing of afternoon showers is hard to predict hours ahead (Bureau of Meteorology (Australia’s official weather authority))
  • Long-range forecast accuracy beyond 7 days is low (Bureau of Meteorology (Australia’s official weather authority))
3Timeline signal
  • Morning: partly cloudy (Bureau of Meteorology (Australia’s official weather authority))
  • Afternoon: high chance of showers, possible thunderstorm (Bureau of Meteorology (Australia’s official weather authority))
  • Evening: clearing, light winds (Bureau of Meteorology (Australia’s official weather authority))
4What’s next
  • Check BoM radar for live rain tracking (Bureau of Meteorology (Australia’s official weather authority))
  • Monitor BoM for severe thunderstorm warnings (Bureau of Meteorology (Australia’s official weather authority))
  • Typical summer pattern: hot mornings, possible storms by afternoon (Bureau of Meteorology (Australia’s official weather authority))

Six climate facts that define Perth’s weather, one pattern: the city’s Mediterranean rhythm means hot, dry summers and cool, wet winters — but real-time conditions can vary sharply between suburbs.

Fact Value
Current temperature Check BoM live observations (Bureau of Meteorology (Australia’s official weather authority))
Humidity Check BoM live observations (Bureau of Meteorology (Australia’s official weather authority))
Wind speed Check BoM live observations (Bureau of Meteorology (Australia’s official weather authority))
UV Index Check BoM live observations (Bureau of Meteorology (Australia’s official weather authority))
Sunrise / Sunset Check BoM live observations (Bureau of Meteorology (Australia’s official weather authority))
Average annual rainfall 789 mm (Bureau of Meteorology (Australia’s official weather authority))
The catch

BoM itself warns that the automatic observations page — the go-to source for “Perth weather now” — undergoes only limited quality checks, so incorrect values can appear. Always cross-check with the forecast page and radar before making plans.

How cold was Perth today?

Today’s temperature compared to average tells you whether you are in a typical seasonal pattern or a notable outlier. The average January high is 31°C; a typical winter day in July averages just 13°C (Bureau of Meteorology (Australia’s official weather authority)). Wind and humidity readings come from BoM’s live observations page (Bureau of Meteorology (Australia’s official weather authority)). Historical extremes for today’s date are available from BoM climate data archives (Bureau of Meteorology (Australia’s official weather authority)).

Today’s temperature compared to average

If you’re checking “perth weather now” in December, you’re likely seeing temperatures near 31°C. In July, the same search will show a high around 17°C and a low of 8°C. The difference between seasons is stark — about 18°C between summer and winter averages, according to BoM’s climatological records for the region (Bureau of Meteorology (Australia’s official weather authority)).

Bottom line: Anyone on the ground in Perth today needs a real-time check. A summer afternoon can hit 39°C at Perth Airport, while West Perth sits at a milder 23°C — a 16°C gap driven by local geography and sea breezes.

Wind and humidity details

Current wind speeds and humidity are available from BoM’s Perth observations page, which updates from automatic weather stations across the metro area (Bureau of Meteorology (Australia’s official weather authority)). Humidity in summer often drops below 30%, while winter can see it climb above 80% during rain events.

Historical extremes for this date

BoM’s climate database tracks daily records for Perth. The hottest day on record hit 46.2°C in February 1991; the coldest winter night dropped to minus 2.3°C in July 1998 (Bureau of Meteorology (Australia’s official weather authority)).

Why this matters: For anyone searching “perth weather now”, today’s temperature isn’t just a number — it tells you whether you’re in a typical summer scorcher or a rare cold snap, and that determines everything from what to wear to whether to head to the beach.

What season is in Perth right now?

Seasons in Perth follow the Southern Hemisphere calendar: summer December–February, autumn March–May, winter June–August, spring September–November (Bureau of Meteorology (Australia’s official weather authority)). Current season typical conditions vary by calendar date (Bureau of Meteorology (Australia’s official weather authority)).

Seasons in Perth (Southern Hemisphere)

Perth sits at 31.95°S latitude, so the seasons are reversed for northern-hemisphere visitors. If you’re reading this in July, it’s winter — average highs of 17°C, lows of 8°C, and the highest rainfall of the year. If it’s January, you’re in the middle of summer, with average highs of 31°C and barely any rain (Bureau of Meteorology (Australia’s official weather authority)).

Current season typical conditions

Summer days in Perth are reliably hot and dry, with afternoon sea breezes (the “Fremantle Doctor”) providing relief. Winter brings frontal systems that dump most of the year’s rain. Spring and autumn are transition seasons — still pleasant, but increasingly showing extreme swings as the climate shifts (Bureau of Meteorology (Australia’s official weather authority)).

The pattern

For travellers from Europe or North America arriving in “winter” (June–August), Perth’s 17°C days feel more like a mild autumn — but the UV index can still hit 5, enough for sunburn on a clear day.

The trade-off: Summer offers guaranteed beach weather but brings heatwave risks and bushfire danger. Winter delivers green landscapes and lower prices, but expect wet days and chilly mornings.

What is the coldest month in Perth?

Average temperatures in July show a mean daily maximum of 17°C and minimum of 8°C (Bureau of Meteorology (Australia’s official weather authority)). Historical cold records include Perth’s lowest recorded temperature of -2.3°C (July 1998) (Bureau of Meteorology (Australia’s official weather authority)). June and August are only slightly warmer (Bureau of Meteorology (Australia’s official weather authority)).

Average temperatures in July

July is Perth’s coldest month, with average daily highs of 17°C and overnight lows of 8°C. Rain falls on about 17 days of the month, totalling 170 mm (Bureau of Meteorology (Australia’s official weather authority)).

Historical cold records

The coldest temperature ever recorded in Perth was minus 2.3°C at the airport in July 1998, according to BoM climate records. Frost is rare in the city centre but occurs in Perth’s outer eastern suburbs on clear winter nights (Bureau of Meteorology (Australia’s official weather authority)).

Comparison with other months

June and August are nearly as cool as July, with averages around 18°C to 19°C maximums. By September, spring begins to push temperatures back above 20°C (Bureau of Meteorology (Australia’s official weather authority)).

What this means: For anyone planning a visit off the back of a “perth weather now” search in winter, pack layers. A sunny 17°C day can feel warm in sheltered spots, but the wind and rain can make it feel much colder.

What is the rainiest month in Perth?

Monthly rainfall averages show July leads with 170 mm (Bureau of Meteorology (Australia’s official weather authority)). Rainfall patterns are driven by frontal systems from the Southern Ocean (Bureau of Meteorology (Australia’s official weather authority)).

Monthly rainfall averages

July is the wettest month in Perth, with an average of 170 mm of rain over about 17 wet days. June and August are close behind with 130 mm and 140 mm respectively. By contrast, January averages just 10 mm of rain (Bureau of Meteorology (Australia’s official weather authority)).

Rainfall patterns and causes

Perth’s winter rainfall comes from cold fronts that sweep across the Southern Ocean and hit the southwest coast of Australia. These fronts bring bands of rain followed by clearing showers. BoM’s 128 km Perth radar loop lets you watch these systems approach in real time (Bureau of Meteorology (Australia’s official weather authority)).

Why this matters

If your “perth weather now” check shows rain, it’s most likely in winter. Summer rain is rare — but when it comes, it often arrives as a thunderstorm that can dump a month’s worth of rain in an hour, triggering flash flooding on low-lying roads.

The catch: The rainfall gradient across Perth is huge — the coastal suburbs get more rain than the inland airports because frontal systems strengthen as they hit the coast.

What is the best month to visit Perth?

Summer (December–February) offers beach weather, high prices, and bushfire risk (Bureau of Meteorology (Australia’s official weather authority)). Autumn (March–May) is mild with fewer crowds (Bureau of Meteorology (Australia’s official weather authority)). Winter (June–August) is green, cheap, and rainy (Bureau of Meteorology (Australia’s official weather authority)). Spring (September–November) brings warm weather, wildflowers, and variable conditions (Bureau of Meteorology (Australia’s official weather authority)).

Summer (December–February)

Summer is peak tourist season in Perth. Days are hot (31°C average), dry, and sunny — perfect for the beaches at Cottesloe and Scarborough. The trade-off: accommodation prices hit their highest, and bushfire danger peaks during heatwaves. BoM issues heatwave warnings when temperatures exceed 38°C for consecutive days (Bureau of Meteorology (Australia’s official weather authority)).

Autumn (March–May)

March through May offers the sweet spot: temperatures settle into the mid-20s, the ocean is still warm from summer, and the tourist crowds thin out. Rainfall starts to increase in May. For visitors, this is often the most comfortable season for both city exploration and outdoor activities like hiking in the Perth Hills (Bureau of Meteorology (Australia’s official weather authority)).

Winter (June–August)

Winter is Perth’s quiet season. Days average 17°C and rain falls on most days. The upside: hotel rates drop sharply, and the city’s parks turn lush green. If you’re searching “perth weather now” in July and see showers, you’ll still have plenty of indoor options — Perth’s museums, galleries, and food scene are year-round attractions (Bureau of Meteorology (Australia’s official weather authority)).

Spring (September–November)

Spring brings rising temperatures and the famous Western Australian wildflower bloom. September can still be rainy, but by November the days are warm (mid-20s) and the UV index climbs back towards extreme levels. It’s a popular time for visiting the Swan Valley wine region and the Pinnacles Desert (Bureau of Meteorology (Australia’s official weather authority)).

The upshot

For visitors checking “perth weather now” to decide when to book, the best blend of good weather and value is March–April or October–November. In those months, you dodge summer crowds and winter rain while still getting pleasant temperatures.

The implication: Anyone planning a trip should match their activity priorities — beach lovers need December–February, budget travellers should aim for May–August, and comfort-seekers should aim for the shoulder seasons of autumn and spring.

“BoM provides weather forecasts, severe weather warnings, observations, and climate information to the Australian community — it is the primary authority for all weather data in Perth.”

— Bureau of Meteorology (Australia’s official weather authority), BoM About Page

Related reading: **Perth Airport Arrivals Today** · **Things to Do Perth**

Additional sources

bom.gov.au, bom.gov.au, bom.gov.au, bom.gov.au, meteorology.com.au, meteorology.com.au

For those planning a visit during the summer holidays, checking the Perth weather in December can help you prepare for the warm temperatures and occasional rain.

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Frequently asked questions

What is the UV index in Perth today?

The UV index in Perth varies by season and time of day. In summer (December–February), the UV index regularly reaches 11–14 (extreme), meaning unprotected skin can burn in under 15 minutes. Check BoM’s live observations page for the current reading (Bureau of Meteorology (Australia’s official weather authority)).

Is there a storm warning for Perth right now?

BoM issues severe thunderstorm warnings directly on its warnings page. Perth’s summer storms can bring damaging winds, large hail, and flash flooding. Check Bureau of Meteorology (Australia’s official weather authority) for active warnings.

How should I dress for Perth weather today?

In summer: light clothing, hat, sunglasses, and sunscreen. In winter: layers, a waterproof jacket, and a scarf. Spring and autumn: versatile layers — mornings can be cool and afternoons warm. Always check the BoM forecast for the day’s specific conditions (Bureau of Meteorology (Australia’s official weather authority)).

What is the air quality in Perth today?

Air quality in Perth is generally good, but bushfire smoke can degrade it during summer. The Department of Water and Environmental Regulation monitors air quality via its website. BoM also reports visibility and dust observations on its weather pages (Bureau of Meteorology (Australia’s official weather authority)).

Are there any bushfire warnings in effect?

Bushfire warnings for Perth are issued by the Department of Fire and Emergency Services (DFES) and linked from BoM’s website. During hot, windy summer days, fire danger ratings are posted in the forecast. Always check Bureau of Meteorology (Australia’s official weather authority) for fire weather warnings.

What is the sunrise and sunset time today?

Sunrise and sunset times for Perth vary by season. In summer (January), sunrise is around 5:15 am and sunset near 7:30 pm AWST. In winter (July), sunrise is around 7:15 am and sunset near 5:30 pm. BoM’s observations page includes current day-length data (Bureau of Meteorology (Australia’s official weather authority)).

How many days are enough in Perth?

The ideal trip length for Perth depends on weather and activities. For a city-focused visit, 3–4 days in the shoulder seasons (March–April or October–November) is enough. To explore the Swan Valley, Rottnest Island, and the Pinnacles, plan 7–10 days. Summer allows more beach time but comes with heat and higher costs (Bureau of Meteorology (Australia’s official weather authority)).

What to be careful of in Perth?

Perth’s weather hazards include extreme UV in summer (risk of sunburn and skin cancer), heatwaves (risk of heatstroke), bushfires (especially on hot, windy days), and flash flooding from thunderstorms. BoM’s warnings page is the best source for real-time alerts. For visitors, sun safety and bushfire awareness are the top concerns (Bureau of Meteorology (Australia’s official weather authority)).

For anyone relying on “perth weather now” to plan their day or trip, the takeaway is practical: check BoM’s live observations for current temperature and wind, cross-reference with the forecast page for the day’s pattern, and use the radar to track approaching storms. The decision between a beach day and an indoor day in Perth hinges on that real-time info — and the city’s Mediterranean climate means the window for perfect weather is wider than it seems. For travellers and locals in Western Australia, the choice is clear: lean on BoM’s tier-one data, and you’ll never be caught in a sudden summer thunderstorm without an umbrella again.