The biggest temperature swing occurs between March and April, as typical highs shift from 28.9°C / 84.1°F to 24.9°C / 76.8°F (about 4.1°C / 7.3°F).
| Month | Low Temperature | High Temperature | Category |
|---|---|---|---|
| January | 18.9°C | 30.8°C | HOT |
| February | 19.3°C | 31.2°C | HOT |
| March | 17.9°C | 28.9°C | WARM |
| April | 15.3°C | 24.9°C | WARM |
| May | 12.5°C | 21.1°C | MILD |
| June | 10.5°C | 18°C | MILD |
| July | 9.7°C | 16.9°C | MILD |
| August | 9.7°C | 17.5°C | MILD |
| September | 10.5°C | 18.7°C | MILD |
| October | 12.3°C | 21.9°C | MILD |
| November | 15°C | 25.6°C | WARM |
| December | 17.3°C | 28.8°C | WARM |
February has the warmest typical feels-like highs (31.2°C / 88.1°F), while July is coolest (14.2°C / 57.5°F).
| Month | Low Feels Like | High Feels Like | Category |
|---|---|---|---|
| January | 16.8°C | 30.8°C | HOT |
| February | 17.5°C | 31.2°C | HOT |
| March | 16.2°C | 28.4°C | WARM |
| April | 13.4°C | 23.6°C | WARM |
| May | 10.1°C | 19.1°C | MILD |
| June | 7.6°C | 15.6°C | MILD |
| July | 6.6°C | 14.2°C | COOL |
| August | 6.8°C | 14.9°C | COOL |
| September | 7.7°C | 16.7°C | MILD |
| October | 9.7°C | 20.7°C | MILD |
| November | 12.5°C | 24.9°C | WARM |
| December | 14.9°C | 28.3°C | WARM |
July is wettest at 109.3 mm / 4.3 inches, while December is driest at 9.9 mm / 0.39 inches.
| Month | Baseline | Rainfall | Category |
|---|---|---|---|
| January | -29.8 mm | 15.5 mm | DRY |
| February | -29.8 mm | 11.6 mm | DRY |
| March | -29.8 mm | 23.2 mm | LIGHT |
| April | -29.8 mm | 27.3 mm | LIGHT |
| May | -29.8 mm | 73.2 mm | MODERATE |
| June | -29.8 mm | 98.8 mm | MODERATE |
| July | -29.8 mm | 109.3 mm | MODERATE |
| August | -29.8 mm | 91.8 mm | MODERATE |
| September | -29.8 mm | 55.3 mm | LIGHT |
| October | -29.8 mm | 31.8 mm | LIGHT |
| November | -29.8 mm | 18.3 mm | DRY |
| December | -29.8 mm | 9.9 mm | DRY |
January has the strongest peak UV (around index 9.6).
| Month | Baseline | UV Index | Category |
|---|---|---|---|
| January | 0 | 9.6 | VERY HIGH |
| February | 0 | 9.3 | VERY HIGH |
| March | 0 | 8.3 | VERY HIGH |
| April | 0 | 6.7 | HIGH |
| May | 0 | 4.9 | MODERATE |
| June | 0 | 3.9 | MODERATE |
| July | 0 | 4.4 | MODERATE |
| August | 0 | 5.9 | MODERATE |
| September | 0 | 7.2 | HIGH |
| October | 0 | 8.4 | VERY HIGH |
| November | 0 | 9.2 | VERY HIGH |
| December | 0 | 9.5 | VERY HIGH |
Daylight ranges from 10.1h in June to 14.2h in December.
| Month | Baseline | Daylight Hours | Category |
|---|---|---|---|
| January | 0h | 14h | LONG |
| February | 0h | 13.2h | LONG |
| March | 0h | 12.3h | BALANCED |
| April | 0h | 11.3h | BALANCED |
| May | 0h | 10.5h | BALANCED |
| June | 0h | 10.1h | BALANCED |
| July | 0h | 10.3h | BALANCED |
| August | 0h | 11h | BALANCED |
| September | 0h | 11.9h | BALANCED |
| October | 0h | 12.9h | BALANCED |
| November | 0h | 13.7h | LONG |
| December | 0h | 14.2h | LONG |
July is most humid (75.6%), while January is driest (51.4%).
| Month | Baseline | Humidity (avg) | Category |
|---|---|---|---|
| January | 42.9% | 51.4% | COMFORTABLE |
| February | 42.9% | 51.7% | COMFORTABLE |
| March | 42.9% | 55.3% | COMFORTABLE |
| April | 42.9% | 63.2% | COMFORTABLE |
| May | 42.9% | 69.2% | HUMID |
| June | 42.9% | 74.4% | HUMID |
| July | 42.9% | 75.6% | MUGGY |
| August | 42.9% | 75.3% | MUGGY |
| September | 42.9% | 72.7% | HUMID |
| October | 42.9% | 66.1% | HUMID |
| November | 42.9% | 58.4% | COMFORTABLE |
| December | 42.9% | 52.4% | COMFORTABLE |
January has the strongest typical average wind (20.4 km/h / 12.7 mph), while May is calmest (15.5 km/h / 9.6 mph).
| Month | Baseline | Wind (avg) | Category |
|---|---|---|---|
| January | 13.5 km/h | 20.4 km/h | BREEZY |
| February | 13.5 km/h | 19.3 km/h | CALM |
| March | 13.5 km/h | 17.9 km/h | CALM |
| April | 13.5 km/h | 15.5 km/h | CALM |
| May | 13.5 km/h | 15.5 km/h | CALM |
| June | 13.5 km/h | 16.2 km/h | CALM |
| July | 13.5 km/h | 17.1 km/h | CALM |
| August | 13.5 km/h | 16.6 km/h | CALM |
| September | 13.5 km/h | 17.2 km/h | CALM |
| October | 13.5 km/h | 17.7 km/h | CALM |
| November | 13.5 km/h | 19 km/h | CALM |
| December | 13.5 km/h | 20.1 km/h | BREEZY |
July is windiest by P95 gust signal (67.7 km/h / 42.1 mph).
| Month | Baseline | Wind (gusts) | Category |
|---|---|---|---|
| January | 0 km/h | 61.2 km/h | VERY WINDY |
| February | 0 km/h | 58.2 km/h | VERY WINDY |
| March | 0 km/h | 54.4 km/h | VERY WINDY |
| April | 0 km/h | 50.8 km/h | VERY WINDY |
| May | 0 km/h | 57.2 km/h | VERY WINDY |
| June | 0 km/h | 64.1 km/h | VERY WINDY |
| July | 0 km/h | 67.7 km/h | VERY WINDY |
| August | 0 km/h | 65.5 km/h | VERY WINDY |
| September | 0 km/h | 65.2 km/h | VERY WINDY |
| October | 0 km/h | 58.3 km/h | VERY WINDY |
| November | 0 km/h | 58.3 km/h | VERY WINDY |
| December | 0 km/h | 59.8 km/h | VERY WINDY |
July has the most rain days (~15.8), while February has the fewest (~2.4). Rain days count the average number of days in a month with measurable rain (about 0.1 mm or more).
| Month | Baseline | Rain Days | Category |
|---|---|---|---|
| January | -3 days | 2.7 days | RARE |
| February | -3 days | 2.4 days | RARE |
| March | -3 days | 4.2 days | SOME |
| April | -3 days | 6.2 days | SOME |
| May | -3 days | 9.7 days | FREQUENT |
| June | -3 days | 12.5 days | FREQUENT |
| July | -3 days | 15.8 days | VERY FREQUENT |
| August | -3 days | 13.7 days | FREQUENT |
| September | -3 days | 11.3 days | FREQUENT |
| October | -3 days | 7.8 days | SOME |
| November | -3 days | 5.7 days | SOME |
| December | -3 days | 2.9 days | RARE |
July has the most heavy rain/washout risk days (~7). Heavy rain days are the average number of days likely to bring stronger downpours that can disrupt outdoor plans.
| Month | Baseline | Heavy Rain Days | Category |
|---|---|---|---|
| January | 0 days | 1 days | OCCASIONAL |
| February | 0 days | 1 days | OCCASIONAL |
| March | 0 days | 1 days | OCCASIONAL |
| April | 0 days | 2 days | OCCASIONAL |
| May | 0 days | 4 days | FREQUENT |
| June | 0 days | 6 days | PERSISTENT |
| July | 0 days | 7 days | PERSISTENT |
| August | 0 days | 6 days | PERSISTENT |
| September | 0 days | 4 days | FREQUENT |
| October | 0 days | 2 days | OCCASIONAL |
| November | 0 days | 1 days | OCCASIONAL |
| December | 0 days | 0 days | RARE |
February has the highest heat-risk day count (~13 days). Heat days are the average number of days that exceed our location-specific heat-risk threshold.
| Month | Baseline | Heat Days | Category |
|---|---|---|---|
| January | 0 days | 12 days | SEVERE |
| February | 0 days | 13 days | SEVERE |
| March | 0 days | 7 days | HIGH |
| April | 0 days | 1 days | LOW |
| May | 0 days | 0 days | LOW |
| June | 0 days | 0 days | LOW |
| July | 0 days | 0 days | LOW |
| August | 0 days | 0 days | LOW |
| September | 0 days | 0 days | LOW |
| October | 0 days | 1 days | LOW |
| November | 0 days | 3 days | ELEVATED |
| December | 0 days | 8 days | HIGH |
Daylight varies from 10.1 hours in June (winter) to 14.2 hours in December (summer), which is a difference of 4.1 hours.
Southern Hemisphere seasons shape the weather patterns throughout the year. Here's what to expect in each season:
| Ranking Goal | #1 | #2 | #3 | #4 |
|---|---|---|---|---|
| Lowest rain risk | Dec 0 risk days | Jan 1 risk days | Feb 1 risk days | Mar 1 risk days |
| Lowest heatwave risk | May 0 risk days | Jun 0 risk days | Jul 0 risk days | Aug 0 risk days |
| Lowest cold risk | Jan 0 risk days | Feb 0 risk days | Mar 0 risk days | Dec 0 risk days |
| Lowest wind disruption risk | Apr 51 km/h | Mar 54 km/h | May 57 km/h | Feb 58 km/h |
| Most comfortable evenings | Apr 77 / 100 | Mar 73 / 100 | Nov 69 / 100 | Dec 68 / 100 |
| Best outdoor reliability | Apr 84 / 100 | Nov 77 / 100 | Oct 75 / 100 | Mar 71 / 100 |
Click any month for detailed weather information and packing advice.
Get personalized month rankings based on weather comfort, outdoor activity suitability, and seasonal conditions.
View Best Time to VisitThe best months to visit Perth depend on your preferences. For warm weather, February is typically the warmest month. For dry conditions, December, February, January tend to have the least rainfall. Consider your priorities, and whether you prefer warmer temperatures, drier weather, or longer daylight hours.
February is typically the warmest month in Perth, with average high temperatures reaching around 31°C (88°F). This is peak summer weather, ideal for outdoor activities and sightseeing.
August is usually the coldest month, with average low temperatures dropping to around 10°C (50°F). Pack warm layers if visiting during this time, especially for evening activities.
July typically sees the most rainfall in Perth, averaging around 109mm (4.3 inches). It's wise to pack waterproof layers and have some indoor backup plans if you're visiting during this month.
December is typically the driest month, with average rainfall of just 10mm (0.4 inches). This makes it an excellent time for outdoor exploration and activities with minimal risk of rain disruption.
Temperatures in Perth range from average lows of 14°C (57°F) to highs of 24°C (75°F). This variation means you'll want to pack differently depending on when you visit, as layers are key for adapting to the seasonal changes.
Yes, sun protection is important in Perth. UV levels can reach 10 during peak months, which is considered very high. Pack sunscreen (SPF 30+), sunglasses, and a hat, especially if you'll be outdoors for extended periods.