Perth weather in January
January in Perth: hot, dry, with clean air — an excellent time to visit.
#6 of 12 months in Perth · #51 of 604 destinations to visit in January · comfort 88/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Perth climate normals — January
| Daytime high | 32°C / 89°F | 🥵 hot |
|---|---|---|
| Nighttime low | 19°C / 66°F | |
| Feels like (high) | 31°C / 88°F | |
| Rainfall | 1 mm / 0 in | ☀️ dry |
| Rainy days | 0 days | |
| Humidity | 45% | 🍃 comfortable |
| Dew point | 12°C / 53°F | |
| Sunshine | 12.8 h/day | |
| Daylight | 14 h | |
| Wind | 30 km/h / 19 mph | |
| Air quality (US AQI) | 26 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Perth in January — FAQ
- Is January a good time to visit Perth?
- January in Perth: hot, dry, with clean air — an excellent time to visit. It ranks #6 of 12 months for Perth on SeasonMap's comfort score (88/100).
- What is the weather like in Perth in January?
- In January, Perth averages a daily high of 31.5°C and a low of 18.9°C, with about 1 mm of rain over roughly 0.4 rainy days.
- What is the air quality in Perth in January?
- Perth has a mean US Air Quality Index of about 26 in January.