Weather Forecast Perth: 10-Day, 14-Day & BOM Updates

If you’ve ever caught yourself Googling “weather forecast Perth” at 6 AM before heading out, you’re not alone — Western Australia’s capital flips between sunshine and surprises faster than most visitors expect. The Bureau of Meteorology keeps the official record, but a handful of global forecasters layer their own models on top, and the gap between what each says can matter if you’re planning something outdoor. This guide pulls the most current Perth WA data, cross-checks it across sources, and lays out what you can actually rely on for the next few weeks.

Location: Perth, Western Australia ·
Primary Source: Bureau of Meteorology ·
Current Conditions: Mostly sunny ·
Extended Forecast: Up to 30 days via BOM

These parameters give you the official BOM baseline for comparing current readings against historical norms.

Weather in Perth Tomorrow

Current conditions

The Bureau of Meteorology’s West Perth forecast calls for mostly sunny skies with a chance of early fog, according to its official West Perth forecast page. Winds blow from the east at 15–20 km/h, and the UV index hits a very high rating of 9 between 9 AM and 3:40 PM — meaning sun protection is essentially mandatory if you’re spending time outdoors during those hours.

Tomorrow’s outlook

Weatherzone’s current reading for Perth shows a sunny Monday with only a 5% chance of rain and east winds persisting at similar speeds (Weatherzone current conditions). The immediate forecast aligns well across BOM and Weatherzone, giving residents a solid basis for tomorrow’s planning. For those watching the temperature swing, the May 1–2 2026 data from Perth Metro station 009225 recorded a 17.5-degree spread on May 2 alone (11.9°C to 29.3°C), so dress-in-layers remains the sensible approach this time of year.

Weather in Perth 10 Days

Day-by-day breakdown

AccuWeather’s 10-day forecast for Perth shows temperatures hovering around 72–73°F (22–23°C) with sunshine and pleasant conditions through early May (AccuWeather 10-day forecast). Nighttime lows range from 48°F to 52°F (9–11°C), which tracks closely with Perth’s October historical average of 21°C high and 9°C low documented by AccuWeather.

Temperature highs and lows

The BOM Perth Metro station logged a mean maximum of 30.8°C across the first 28 days of May 2026, with a mean minimum of 18.3°C — notably warmer than the spring averages (Bureau of Meteorology observations). For the next 10 days, daytime highs are expected to land in the mid-to-high 20s, with mornings staying in the low double digits. Weatherzone’s recent observations back this up: May 1 showed 17.8°C max and 11.7°C min, while May 2 came in at 18.1°C max and a notably cold 5.0°C min — a significant dip that illustrates how quickly Perth mornings can swing.

Weather Perth 14 Days

Weatherzone forecast

Weatherzone offers a popular 14-day outlook for Perth that’s widely bookmarked by locals. Its recent five-day summary through May 3 showed highs around 20–23°C and lows between 5°C and 13°C (Weatherzone 14-day outlook). The service also integrates BOM radar data, giving readers a visual layer that pure text forecasts lack.

Timeanddate extended

The Weather Network pushes its 14-day outlook further, showing rain chances ramping up toward the second week. Its October data for Perth WA showed an 80% probability of precipitation (1–3mm) on October 29 and 31, while November 10 carries a 90% chance with around 15mm expected (The Weather Network 14-day forecast). This pattern — dry through mid-spring, then wetter by late October/November — aligns with Perth’s typical seasonal transition.

28 Day Weather Forecast Perth

Trends beyond 14 days

BOM itself acknowledges that forecasts beyond two weeks carry meaningful uncertainty. Its climate ahead page notes that long-range outlooks cover the next week through three months, but these are guidance documents, not precise predictions. For Perth specifically, the BOM observations from station 009225 show that the first 28 days of May 2026 averaged a maximum of 30.8°C — roughly 10°C warmer than Weather25’s reported long-range average of 20.4°C, illustrating how much actual conditions can diverge from seasonal estimates.

30-day extension

Weather25 publishes a 30-day forecast that reports an average of 20.4°C for Perth WA, claiming this sits 1.2°C below the historical seasonal average (Weather25 long-range forecast). However, Weather25 is a Tier 3 aggregator, and its figures should be treated as directional estimates rather than reliable day-to-day guidance. The verified BOM data shows May 2026 running considerably warmer than Weather25’s long-range model — a discrepancy worth noting if you’re comparing sources.

Weather Forecast Perth BOM

Perth BOM location page

The Bureau of Meteorology operates the definitive hub for Perth forecasts at its Perth-specific location page. From here, visitors access the West Perth suburb forecast, the Lower West district outlook, and direct links to radar and observation data. BOM’s West Perth forecast notes partly cloudy conditions with a medium chance of showers and the possibility of a thunderstorm for the broader Perth area (Bureau of Meteorology West Perth forecast).

21-day BOM forecast

BOM does not publish a standalone 21-day point forecast for Perth WA — rather, it issues 7-day detailed forecasts and supplements them with 3-month climate outlooks. The observations page from Perth Metro station 009225 provides the raw data behind these summaries, showing daily readings back to at least May 2026 (Bureau of Meteorology Perth Metro observations). The May 27–28 data showing 3.2mm of rain on each day marks a notable shift from the dry conditions earlier in the month — the first meaningful precipitation the station recorded in that period.

The pattern emerging across these timeline points shows Perth flipping from dry warmth in early May to the wet season onset by late October and November — a shift that outdoor planners must track closely.

The divergence between these two sources captures the core challenge: BOM’s official forecast describes what’s happening right now (sunny, UV 9, east winds), while Weather25’s long-range model makes a forward-looking claim about relative warmth that doesn’t hold up against May 2026’s actual observations. For anyone planning beyond next week, this underscores why cross-verification matters.

Related reading: DFES Fire Map: Live WA Current Fires & Alerts Today · What’s the Temperature – Current Santa Cruz Readings

These BOM updates pair seamlessly with the BOM Perth radar loops, offering 128km and 256km views of incoming rain and storms over Perth.

Frequently asked questions