November brings 27°C daytime highs, 22mm of precipitation across about 2 wet days and 13.7 hours of daylight — best for beach days, swimming and reliable sunshine. The strongest run of the year is October to December. July is the quietest month: quiet and local, and still good for low-angle light and quiet and local.
Long-run climate normals for Perth. Month ratings compare months within Perth only — they are not a ranking of Perth against other destinations, and they are not a forecast for a specific year.
Last updated: · Live forecast data refreshes hourly.
| Best month | November — Beach days, Swimming, Reliable sunshine |
| Best 3-month window | October–December |
| Quietest month | July — Quiet and local |
| Driest month | January — 8mm |
| Wettest month | June — 148mm |
| Warmest / coolest | January 32°C / August 18°C |
| Seasonality | Strongly seasonal — the months feel like different places |
| Annual rainfall | 734mm over roughly 84 rain days |
July gets roughly 559% more precipitation than November — 145mm against 22mm. That difference, more than temperature, is what changes how a day here feels.
Daytime highs only move 14°C across the whole year (18–32°C), so timing matters far less here than rainfall does.
December gives you 14.1 hours of daylight against just 9.9 in June — a 4-hour difference in how much you can actually fit into a day.
January is the driest month at 8mm across roughly 1 wet days, while June peaks at 148mm.
December is almost as good as November, but usually quieter and cheaper. If your dates are flexible, it is the easier trip.
Perth changes character completely through the year — November and July are effectively two different destinations. Pick the month that matches what you want to do, not the highest-rated one.
Ratings compare months within Perth, not against destinations worldwide: five stars means the best time to be here, not that Perth beats anywhere else. Tags describe what the conditions actually suit.
| Month | Rating | High / Low | Precipitation | Wet days | Sun | Daylight | Best for |
|---|---|---|---|---|---|---|---|
| January | ★★★★☆ | 32°C / 18°C | 8mm | 1 | 7h | 13.9h | Beach days · Swimming |
| February | ★★★★★ | 32°C / 18°C | 12mm | 1 | 11h | 13.1h | Beach days · Swimming · Reliable sunshine |
| March | ★★★★★ | 30°C / 17°C | 17mm | 2 | 11h | 12.2h | Beach days · Swimming · Reliable sunshine |
| April | ★★★★☆ | 27°C / 14°C | 43mm | 5 | 10h | 11.2h | Beach days · Swimming · Reliable sunshine |
| May | ★★★☆☆ | 23°C / 12°C | 106mm | 12 | 6h | 10.3h | Hiking · Cycling · Low-angle light |
| June | ★★☆☆☆ | 20°C / 9°C | 148mm | 17 | 3h | 9.9h | Low-angle light · Quiet and local |
| July | ★★☆☆☆ | 18°C / 8°C | 145mm | 16 | 3h | 10.1h | Low-angle light · Quiet and local |
| August | ★★☆☆☆ | 18°C / 8°C | 118mm | 13 | 3h | 10.9h | Hiking · Cycling · Low-angle light |
| September | ★★★☆☆ | 20°C / 9°C | 73mm | 8 | 3h | 11.8h | Hiking · Cycling · Spring greenery |
| October | ★★★★★ | 23°C / 12°C | 44mm | 5 | 6h | 12.8h | Hiking · Cycling |
| November | ★★★★★ | 27°C / 14°C | 22mm | 2 | 10h | 13.7h | Beach days · Swimming · Reliable sunshine |
| December | ★★★★★ | 30°C / 17°C | 10mm | 1 | 11h | 14.1h | Beach days · Swimming · Reliable sunshine |
| You are planning | Pick | Why |
|---|---|---|
| Sun & beach days | December | 11h daily sunshine, 30°C highs and only 1 rain days. |
| City walking & sightseeing | October | 23°C highs with 12.8h of daylight — long days without heat fatigue. |
| Photography & light | December | 11h of sun and 14.1h daylight give the widest window for golden-hour work. |
| Value & fewer crowds | March | Scores 82/100 — close to peak conditions but outside the busiest window. |
| Cooler-weather travel | August | 18°C highs and 8°C nights suit anyone who dislikes heat. |
Each month in Perth is described from long-run climate normals and then rated relative to the other eleven months in the same city. A five-star January in a cold destination means January is one of the best times to be there — not that it beats a Mediterranean summer.
| Factor | Weight | What it measures |
|---|---|---|
| Temperature | Described | Average daytime high and overnight low for the month, shown as measured rather than judged. |
| Precipitation | Described | Monthly millimetres and wet-day count, labelled as snow or rain/snow where temperatures make that the likely phase. |
| Sunshine & daylight | Described | Average daily sunshine hours and astronomical daylight length at mid-month, from the city’s latitude. |
| “Best for” tags | Derived | Applied only when the conditions genuinely support the activity — snow depth-friendly cold for skiing, 13–24°C and low rain risk for hiking, dark evenings at high latitude for aurora. A month with few strong use cases gets fewer tags rather than padded ones. |
| Star rating | Relative | Ranks the month against the other eleven months in the same city. Never a comparison between cities. |
Figures are long-run climate averages, not a forecast for a specific year. Where a month lacks sourced rainfall or humidity, the value is modelled from temperature range and rain frequency.
November is the best all-round month in Perth: 27°C highs, 22mm of precipitation and 13.7 hours of daylight, which suits beach days, swimming and reliable sunshine. The strongest three-month window is October to December.
July — 18°C highs, 145mm of precipitation over roughly 16 days and 10.1 hours of daylight. It is the cheapest and least crowded time to go, and it still works for low-angle light and quiet and local.
January is the driest month at 8mm over about 1 rain days, against 148mm in June. Across the year Perth records around 734mm.
Yes, but the months are genuinely different trips. November suits beach days, swimming and reliable sunshine, while July suits low-angle light and quiet and local. Pick the month that matches what you want to do.
Daylight ranges from 9.9 hours in June to 14.1 hours in December, calculated from the city's latitude.