Best time to visit Perth
Re-score for me — drag the dial — every chart recolours live for your heat & sea limits 27°C · sea 29°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
Default 29 °C is the Beach Climate Index "bathtub" line (Morgan et al.) — where the sea stops being refreshing and starts feeling like a warm bath.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in Perth
30 top-rated tours via Viator. Booking links earn this site a commission at no cost to you.
- 1
6-Day Coral Coaster from Perth to Exmouth One-Way via Monkey Mia Ningaloo Reef - 2
7-Day Exmouth Explorer via Pinnacles Monkey Mia Ningaloo Reef returning to Perth - 3
VIP Swan Valley Wine Tour - Premium Small Group Wine & Gourmet Experience - 4
Swan Valley Wine Tour - Full Day - 5
Rottnest Island Full-Day Trip With Island Tour from Hillarys - 6
Pinnacles Lobster Yanchep Small Group Day Tour from Perth - 7
Cruising the Swan Tour - 8
Hot Air Balloon Flights (Avon Valley) + Breakfast & Perth Pickup - 9
Rottnest Bayseeker Bus Tour from Hillarys Boat Harbour - 10
Swan Valley Tour from Perth: Wine, Beer and Chocolate Tastings - 11
Swan Valley River Cruise and Wine Tasting Day Trip from Perth - 12
Optus Stadium VERTIGO by Twilight - 13
4-Day Monkey Mia Dolphins Pink Lake Pinnacles Comfort-Level Tour - 14
Rottnest Island Historical Train and Tunnel Tour from Hillarys Boat Harbour - 15
Pinnacles Desert Sunset Dinner and Stargazing Tour - 16
Ultimate Swan Valley Food and Wine Day Trip from Perth - 17
The Optus Stadium Tour - 18
Discover Perth Walking Tour: History, Art, Local Insights + More! - 19
The Perth Mint Gold Tour - 20
Swim with Wild Dolphins Day Tour - 21
Swan Valley Wine Cruise - 22
Adventure Rottnest Tour with Ferry & Adventure Cruise - 23
Optus Stadium HALO Roof Climb - 24
Pinnacles Sunset Stargazing Dinner Experience Small Group Tour - 25
Kings Park Segway Tour - 26
Perth City Riverside Segway Tour - 27
Optus Stadium VERTIGO Experience - 28
Half Day Swan Valley Afternoon Wine Tour - Premium Small Group Tour - 29
Private Tour: Full Day Wildlife Park and Swan Valley - from Perth - 30
City Tour Perth and Fremantle and Swan River
Last refreshed 2026-08-13.
Similar climatesCape Town93% · Viña del Mar83% · La Serena82%
Other destinations with the most-alike year-round climate to Perth (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Perth's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 19–30 | 28 | 0 | 8 | — | 41% | 31 | 304 | 13 | Peak | 9 |
| Feb | 20–31 | 30 | 2 | 30 | 15.0 | 41% | 29 | 260 | 12 | Quiet | 8 |
| Mar | 18–29 | 28 | 5 | 56 | 11.2 | 47% | 26 | 256 | 9 | Quiet | 10 |
| Apr | 15–25 | 23 | 6 | 58 | 9.7 | 49% | 23 | 224 | 6 | Quiet | 10 |
| May | 13–22 | 20 | 10 | 129 | 12.9 | 57% | 23 | 203 | 4 | Quiet | 8 |
| Jun | 11–18 | 16 | 14 | 160 | 11.4 | 67% | 22 | 187 | 2 | Quiet | 6 |
| Jul | 11–18 | 15 | 17 | 204 | 12.0 | 67% | 26 | 194 | 3 | Busy | 5 |
| Aug | 10–18 | 15 | 13 | 162 | 12.5 | 65% | 25 | 223 | 4 | Quiet | 6 |
| Sep | 11–20 | 17 | 8 | 112 | 14.0 | 61% | 26 | 241 | 6 | Quiet | 8 |
| Oct | 12–22 | 19 | 6 | 88 | 14.7 | 54% | 27 | 263 | 7 | Quiet | 9 |
| Nov | 15–25 | 23 | 6 | 70 | 11.7 | 51% | 27 | 285 | 9 | Moderate | 10 |
| Dec | 18–29 | 27 | 2 | 20 | 10.0 | 42% | 29 | 312 | 12 | Peak | 10 |
UV Index in Perth by Month
UV index in Perth peaks at 13 (extreme) in January, dropping to 2 (low) in June. January, February, March, November, December reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.
Best months in detail
December
10/1018–29°C (feels 27°C) · 2 rain days (20h) · 312 sun hours · 42% humidity · Peak crowd · UV 12 (extreme) · sunniest 1 in 10 days reach 13 (extreme)
March
10/1018–29°C (feels 28°C) · 5 rain days (56h) · 256 sun hours · 47% humidity · Quiet crowd · UV 9 (very high) · sunniest 1 in 10 days reach 11 (extreme)
April
10/1015–25°C (feels 23°C) · 6 rain days (58h) · 224 sun hours · 49% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 7 (high)
Every month
Show the other 9 months in detail
January
9/1019–30°C (feels 28°C) · 0 rain days (8h) · 304 sun hours · 41% humidity · Peak crowd · UV 13 (extreme)
February
8/1020–31°C (feels 30°C) · 2 rain days (30h) · 260 sun hours · 41% humidity · Quiet crowd · UV 12 (extreme) · sunniest 1 in 10 days reach 13 (extreme)
May
8/1013–22°C (feels 20°C) · 10 rain days (129h) · 203 sun hours · 57% humidity · Quiet crowd · UV 4 (moderate)
June
6/1011–18°C (feels 16°C) · 14 rain days (160h) · 187 sun hours · 67% humidity · Quiet crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)
July
5/1011–18°C (feels 15°C) · 17 rain days (204h) · 194 sun hours · 67% humidity · Busy crowd · UV 3 (low) · sunniest 1 in 10 days reach 3 (moderate)
August
6/1010–18°C (feels 15°C) · 13 rain days (162h) · 223 sun hours · 65% humidity · Quiet crowd · UV 4 (moderate)
September
8/1011–20°C (feels 17°C) · 8 rain days (112h) · 241 sun hours · 61% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 8 (high)
October
9/1012–22°C (feels 19°C) · 6 rain days (88h) · 263 sun hours · 54% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 10 (very high)
November
10/1015–25°C (feels 23°C) · 6 rain days (70h) · 285 sun hours · 51% humidity · Moderate crowd · UV 9 (very high) · sunniest 1 in 10 days reach 11 (extreme)
The afternoon wind that decides your day
Perth summers come with a built-in thermostat. The Fremantle Doctor — a southwesterly sea breeze driven by the temperature gap between the hot inland and the cool Indian Ocean — arrives on most summer afternoons, typically somewhere between 10:00 and 15:00, and pulls the temperature down by several degrees. Near the coast it blows steadily at around 28 to 37 km/h. It is strongest in December and January, when the land-sea contrast peaks, and can reach a hundred kilometres inland.
The days that catch people out are the ones when it fails to arrive. Without it, Perth afternoons routinely push past 40C. The same calendar date can therefore be pleasant or genuinely punishing depending on a wind that is not visible in any monthly average.
This is why a monthly mean understates Perth's variability. The average is a blend of breeze-cooled afternoons and the handful without.
Sources: Bureau of Meteorology — meet the locals , Fremantle Doctor — overview
What is the best month to visit Perth?
March to May and September to November. All are warm, dry and settled, without the February heat peak near 31C that arrives on days when the afternoon sea breeze — the Fremantle Doctor — fails to come in. September and October add the Western Australian wildflower season, one of the largest displays on earth.
What is the rainy season in Perth?
June through August, peaking in July at around 103 mm. Perth has a Mediterranean pattern — almost all rain falls in winter and summer is close to dry, with December averaging about 10 mm. This is the reverse of tropical northern Australia, which catches out visitors who assume one national wet season applies across the country.
How many days are enough in Perth?
Three for the city, Fremantle and Rottnest Island with its quokkas. Five or more if you are adding the Margaret River wine region or the Pinnacles Desert, both of which are long drives rather than day trips. Factor in the isolation too: flights from the east coast take around five hours, so Perth suits a dedicated trip.
What is the wettest month in Perth?
July, at around 103 mm — Perth has a Mediterranean pattern with a wet winter and an almost rainless summer, December averaging about 10 mm. This is the reverse of the tropical north of Australia, and it catches visitors who assume one Australian wet season.
What is the hottest month in Perth?
February, averaging about 31C, with January close behind — Perth is one of the sunniest capitals in the world and summer is hot and dry. The afternoon sea breeze known locally as the Fremantle Doctor arrives most summer days and makes the coast markedly more comfortable than inland.
What is the best time to visit Perth?
September to November, or March to May. Spring brings the state's wildflower season, one of the largest displays on earth, with warm days before summer's peak near 31C. Autumn keeps the warm sea for swimming with fewer people and lower prices than the summer holidays.
How many days do you need in Perth?
Three to four. One for the city, Kings Park and the river; one for Fremantle and Cottesloe Beach; one for Rottnest Island and its quokkas. A fourth allows the Swan Valley wineries or a longer trip south toward Margaret River, which really deserves its own two days.
Is Perth worth visiting given how isolated it is?
It is among the most remote major cities in the world, which is precisely the appeal for some — vast beaches with nobody on them, and Rottnest Island offshore. But factor the distance into planning: flights from the east coast take around five hours, so Perth suits a dedicated trip rather than a side excursion.
What is Perth best known for?
Sunshine and isolation — it is among the most remote major cities in the world, and one of the sunniest. Kings Park, larger than New York's Central Park and overlooking the Swan River, is the city's emblem. Nearby Rottnest Island and its quokkas, and the historic port of Fremantle, are the two standard excursions.
What is a must do in Perth?
Rottnest Island, reached by ferry from Perth or Fremantle — car-free, ringed with beaches and bays, and home to the quokkas that made it internationally recognisable. Beyond that: Kings Park at sunset, Fremantle's markets and prison, and Cottesloe Beach. In spring, the wildflower displays are a genuine draw.
Is Perth expensive to visit?
It is one of Australia's pricier cities for accommodation and dining, driven partly by the resources economy. Beaches, Kings Park and the coastal walks cost nothing, which offsets a lot. The bigger budget item is getting there: flights from the east coast take around five hours, so Perth rarely works as a cheap add-on.
Frequently asked questions about visiting Perth
When is the best time to visit Perth?
December is the highest-scoring month (10/10 on the Holiday Climate Index). Typical conditions: 18–29°C (2 rainy days). The top three months by score are December, March, April.
What is the worst time to visit Perth?
July is the lowest-scoring month (5/10). Typical conditions: 11–18°C (17 rainy days).
When are crowds lowest in Perth?
Search-interest seasonality (Google Trends 2021-2025) is lowest in May and peaks in January. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Perth have good weather but fewer tourists?
March (climate 10/10, crowd index 3) and April (climate 10/10, crowd index 14) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Perth by month?
UV peaks at 13 (extreme) in January and is lowest in June at 2 (low). Monthly peak values: Jan 13, Feb 12, Mar 9, Apr 6, May 4, Jun 2, Jul 3, Aug 4, Sep 6, Oct 7, Nov 9, Dec 12. January, February, March, November, December reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.
What is the UV index in Perth in January?
January is the peak UV month in Perth, with a daily-peak UV index of 13 (extreme). At this level, sunburn can occur in under 20 minutes on unprotected fair skin. Apply SPF 50+, wear protective clothing and a hat, and avoid direct midday sun (11:00–17:00).
How high can UV get in Perth on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. February is the worst case: typical days average UV 12 (extreme), but the top 10% of days reach UV 13 (extreme) — and even higher. Months where the sunniest days routinely exceed the typical reading: February, March, April, June, July, September, October, November, December. Plan sun protection for the worst case, not the average.