Perth Weather in January
With daytime temperatures of 32°C (90°F) and nighttime lows of 19°C (66°F), January in Perth brings very high temperatures during the day. The perfect weather makes it an appealing time to visit.
Rainfall in Perth in January
Looking at the last 30 years, the data shows about 3 days with rain, averaging 20 mm (0.8 in) for the month. The occasional light shower is possible, but rain is rarely an issue this month.
Temperature in Perth in January
January is a good time to be in Perth. Days are perfect, reaching 32°C (90°F), with nights around 19°C (66°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights cool down to 19°C (66°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.While these temperatures are typical, some days might be even hotter. Always be prepared for the unexpected spikes in warmth. Dressing in lightweight and breathable outfits will help you stay cool. Don't forget to stay hydrated and wear sun protection to handle the heat better.
Sunshine in Perth in January
Enjoy a sunny month with about 355 hours of sunshine, the clear skies make Perth even more beautiful.
Wind Speed in Perth in January
Wind speeds average 7 m/s (14 knots) during January. At this speed, you experience strong wind that can make entire trees sway and create resistance when walking. Since this is an average, expect variation from moderate windy periods to particularly gusty days when umbrellas become difficult to control.
Average water temperature in January
At 20°C (68°F), the water is pleasant for swimming. Most people find this range ideal — cool enough to be refreshing, warm enough to stay in comfortably.If you prefer enjoying temperate temperatures and rain-free days, April, May, September, October and November typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Perth's climate page.
Perth Temperature in January
Min Temperature
19°C (66°F)
Max Temperature
32°C (90°F)
Water Temperature
20°C (68°F)
Chance of Rain
10%
Precipitation
20 mm (0.8 in)
Rainy days
3 days
Humidity
39%
Windspeed
7 m/s (14 knots)
Sunshine
355 hours
Percentage Sunshine
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Perth typically stay consistent throughout January, with daily highs averaging around 32°C (90°F). Nights are pleasant, with lows typically ranging from 17°C (63°F) to 19°C (66°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Perth in January
Browse day-by-day weather records for Perth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Perth historical weather extremes in January
According to our 49 years of weather records for Perth, the following extremes were recorded between 1976 and 2025.
- Perth recorded its highest January temperature of 44°C (111°F) on January 22, 1980.
- Perth experienced its chilliest January day on January 10, 1999, reaching only 18°C (64°F).
- The lowest overnight temperature recorded in January was 6°C (43°F) (January 25, 2001).
Best Places in Australia in January
Find out more about the weather in Australia and which places have the best travel conditions in this month. See all of Australia in January →
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What to Wear in Perth in January
Warm temperatures in January make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. With water temperatures around 20°C (68°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Perth in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Australia, check out our Perth's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Perth climate overview or explore weather in Australia.
