Perth at a glance
- Best time
- Mar – May, Sep – Dec
- Warmest month
- Feb · 32°
- Warmest sea
- Feb · 22.5°
- Sunshine a year
- 3,310 h
- Rain a year
- 543 mm
- Climate
- Mediterranean
- Time zone
- UTC+8
- Elevation
- 34 m
Climate in Perth
Perth has a Mediterranean climate with warm to hot, dry summers and mild, wetter winters. February is the warmest month with average highs of 32 °C, while July is the coolest at 17 °C. With around 3,310 hours of sunshine a year, Perth is very sunny; December is the sunniest month with 12.1 hours a day.
Weather in October
Holiday weather in October
Excellent
Best time to visit: March – May, September – December
What is the weather like in Perth in October?
In October, Perth is warm: daytime highs average 22 °C, and nights cool down to about 12 °C. The sea averages 19.0 °C – bracing, so a wetsuit helps for longer swims. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 5 days, adding up to 31 mm. All in all, October is an excellent month for a holiday in Perth.
More details for October
- Daylight
- 12 h 49 min05:37 – 18:27
- UV index
- 9 · very highclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 26 km/haverage daily peak
- Cloud cover
- 39 %on average
- Hot days
- 2 days30 °C or more
- Time zone
- UTC+8Australia/Perth
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 30 %91 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
Sea temperature in Perth
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 18.1 – 19.6 °C
Swimming season: Dec – Jun
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Perth ranges from 18.6 °C in September to 22.5 °C in February. It is warm enough for a comfortable swim (20 °C and more) from December to June.
From May to August the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in February, eight out of ten years were between 21.4 and 23.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 22.0° | 21.1° | 23.0° | refreshing |
| FebruaryFeb | 22.5° | 21.4° | 23.7° | refreshing |
| MarchMar | 22.5° | 21.8° | 23.4° | refreshing |
| AprilApr | 22.2° | 21.2° | 23.3° | refreshing |
| MayMay | 21.7° | 20.8° | 22.5° | refreshing |
| JuneJun | 20.8° | 20.1° | 21.4° | refreshing |
| JulyJul | 19.8° | 19.2° | 20.7° | fresh |
| AugustAug | 19.1° | 18.4° | 19.7° | fresh |
| SeptemberSep | 18.6° | 17.8° | 19.5° | fresh |
| OctoberOct | 19.0° | 18.1° | 19.6° | fresh |
| NovemberNov | 19.9° | 19.0° | 20.6° | fresh |
| DecemberDec | 21.0° | 20.2° | 21.7° | refreshing |
Sunshine hours in Perth
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 9.5 of 12.8 hours of daylight in Perth, 74 % of the day.
Sunshine hours count the time with bright, direct sunshine (WMO definition, estimated from model data); daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Perth: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Perth has about 5 rainy days with 31 mm of rain in total.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 73 | 31° | 19° | 22.0° | 11.8 h | 2 | 17 |
| FebruaryFeb | 72 | 32° | 19° | 22.5° | 11.3 h | 1 | 12 |
| MarchMar | 88 | 29° | 18° | 22.5° | 9.9 h | 3 | 20 |
| AprilApr | 97 | 25° | 15° | 22.2° | 8.2 h | 4 | 25 |
| MayMay | 87 | 21° | 13° | 21.7° | 7.3 h | 8 | 64 |
| JuneJun | 76 | 18° | 11° | 20.8° | 6.4 h | 11 | 97 |
| JulyJul | 66 | 17° | 10° | 19.8° | 6.2 h | 13 | 105 |
| AugustAug | 75 | 17° | 10° | 19.1° | 7.0 h | 11 | 91 |
| SeptemberSep | 88 | 19° | 11° | 18.6° | 8.0 h | 8 | 54 |
| OctoberOct | 97 | 22° | 12° | 19.0° | 9.5 h | 5 | 31 |
| NovemberNov | 100 | 26° | 15° | 19.9° | 11.3 h | 4 | 18 |
| DecemberDec | 86 | 29° | 17° | 21.0° | 12.1 h | 2 | 9 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)
31.95° S, 115.86° E · 34 m · Australia/Perth
Best time to visit Perth
The best time to visit Perth is from March to May and from September to December. For a beach holiday with the sea above 21 °C, go from December to April. For sightseeing, day trips and hiking, conditions are most comfortable from April to June and from August to November. The wettest month is July with 105 mm of precipitation.
Find your perfect month
Tell us what you like and we rate every month in Perth for you.
Your best months: April, October – November
Based on the climate averages; tap a month to see its details.
Which month for what?
Beach & swimming
Dec – Apr
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Apr – Jun, Aug – Nov
15–28 °C and not too much rain
Rainy months
Jul
12 or more rainy days
Perth month by month
The typical weather for every month at a glance.
73January31° · Sea 22° · 12 h
In January, Perth is hot: daytime highs average 31 °C, and nights cool down to about 19 °C. The sea averages 22.0 °C – refreshing for a swim. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 19 days the thermometer climbs to 30 °C or more. It is often windy, with gusts of around 29 km/h. All in all, January is a good month for a holiday in Perth.
Perth in January72February32° · Sea 23° · 11 h
In February, Perth is hot: daytime highs average 32 °C, and nights cool down to about 19 °C. The sea averages 22.5 °C – refreshing for a swim. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 18 days the thermometer climbs to 30 °C or more. All in all, February is a good month for a holiday in Perth.
Perth in February88March29° · Sea 23° · 10 h
In March, Perth is hot: daytime highs average 29 °C, and nights cool down to about 18 °C. The sea averages 22.5 °C – refreshing for a swim. With around 10 hours of sunshine a day, there is plenty of sun. Rain is rare: about 3 days bring 20 mm in total. On about 13 days the thermometer climbs to 30 °C or more. All in all, March is an excellent month for a holiday in Perth.
Perth in March97April25° · Sea 22° · 8 h
In April, Perth is warm: daytime highs average 25 °C, and nights cool down to about 15 °C. The sea averages 22.2 °C – refreshing for a swim. The sun shines for around 8 hours a day. Rain is rare: about 4 days bring 25 mm in total. All in all, April is an excellent month for a holiday in Perth.
Perth in April87May21° · Sea 22° · 7 h
In May, Perth is warm: daytime highs average 21 °C, and nights cool down to about 13 °C. The sea averages 21.7 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 64 mm. All in all, May is an excellent month for a holiday in Perth.
Perth in May76June18° · Sea 21° · 6 h
In June, Perth is mild: daytime highs average 18 °C, and nights cool down to about 11 °C. The sea averages 20.8 °C – refreshing for a swim. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 97 mm in total. All in all, June is a good month for a holiday in Perth.
Perth in June66July17° · Sea 20° · 6 h
In July, Perth is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sea averages 19.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 105 mm in total. All in all, July is a good month for a holiday in Perth.
Perth in July75August17° · Sea 19° · 7 h
In August, Perth is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sea averages 19.1 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 91 mm in total. All in all, August is a good month for a holiday in Perth.
Perth in August88September19° · Sea 19° · 8 h
In September, Perth is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 18.6 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 54 mm. All in all, September is an excellent month for a holiday in Perth.
Perth in September97October22° · Sea 19° · 10 h
In October, Perth is warm: daytime highs average 22 °C, and nights cool down to about 12 °C. The sea averages 19.0 °C – bracing, so a wetsuit helps for longer swims. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 5 days, adding up to 31 mm. All in all, October is an excellent month for a holiday in Perth.
Perth in October100November26° · Sea 20° · 11 h
In November, Perth is warm: daytime highs average 26 °C, and nights cool down to about 15 °C. The sea averages 19.9 °C – bracing, so a wetsuit helps for longer swims. With around 11 hours of sunshine a day, there is plenty of sun. Rain is rare: about 4 days bring 18 mm in total. On about 7 days the thermometer climbs to 30 °C or more. All in all, November is an excellent month for a holiday in Perth.
Perth in November86December29° · Sea 21° · 12 h
In December, Perth is hot: daytime highs average 29 °C, and nights cool down to about 17 °C. The sea averages 21.0 °C – refreshing for a swim. With around 12 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 13 days the thermometer climbs to 30 °C or more. It is often windy, with gusts of around 29 km/h. All in all, December is an excellent month for a holiday in Perth.
Perth in DecemberPlanning a trip to Perth
Getting there
Flying from
- Nonstop flight
- about 18 h
- Distance
- 14,500 km
- Time zone
- UTC+8
Most routes need a change of planes, which adds time.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Perth
When is the best time to visit Perth?
The best time to visit Perth is from March to May and from September to December. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Perth?
The sea temperature in Perth ranges from 18.6 °C in September to 22.5 °C in February. It is warm enough for a comfortable swim (20 °C and more) from December to June.
Can you swim in Perth in October?
Only if you don't mind cold water: in October the sea averages just 19.0 °C. Comfortable swimming is possible from December to June.
What is the warmest month in Perth?
February is the warmest month, with average highs of 32 °C and nights around 19 °C. July is the coolest month at 17 °C.
When does it rain most in Perth?
The wettest month is July with 105 mm of precipitation. The driest month is December with 9 mm.
How many hours of sunshine does Perth get?
Perth gets around 3,310 hours of sunshine a year. The sunniest month is December with 12.1 hours a day; in July there are 6.2 hours a day.
What time zone is Perth in?
Perth uses the time zone Australia/Perth, at UTC+8 all year.
How long is the flight from London to Perth?
A nonstop flight from London to Perth takes about 18 h, for a straight-line distance of about 14,500 km. Most routes need a change of planes, which adds time.
Near Perth
Other destinations close by.