Perth weather in December
December is one of the best months to visit Perth: highs of 25°C (76°F) and about 12 mm (0.5 in) of rain on average. Nights average 18°C (64°F) and cloud cover 36% (NASA POWER, 2001–2025 averages). It is the driest month of the year and the 4th warmest. Compared with November, it is warmer and drier; January brings highs of 26°C (79°F) and 18 mm (0.7 in) of rain.
Is December a good time to visit Perth?
best month Weather score 91/100.
Yes. December is one of the best months for weather in Perth.
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Does it rain a lot in Perth in December?
No, it is usually dry: about 12 mm (0.5 in) falls in an average December. It is the driest month of the year.
How warm is Perth in December?
Days average 25°C (76°F) and nights 18°C (64°F).
Perth weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 26°C (79°F) | 19°C (67°F) | 18 mm | 33% | best |
| February | 27°C (80°F) | 20°C (68°F) | 17 mm | 37% | best |
| March | 26°C (79°F) | 19°C (67°F) | 20 mm | 40% | best |
| April | 23°C (74°F) | 18°C (64°F) | 34 mm | 51% | best |
| May | 21°C (70°F) | 16°C (61°F) | 84 mm | 54% | fair |
| June | 19°C (66°F) | 15°C (58°F) | 113 mm | 59% | least pleasant |
| July | 18°C (64°F) | 14°C (57°F) | 128 mm | 60% | least pleasant |
| August | 18°C (64°F) | 14°C (56°F) | 106 mm | 58% | least pleasant |
| September | 18°C (65°F) | 14°C (56°F) | 70 mm | 53% | fair |
| October | 20°C (68°F) | 15°C (58°F) | 32 mm | 45% | best |
| November | 22°C (72°F) | 16°C (61°F) | 25 mm | 40% | best |
| December | 25°C (76°F) | 18°C (64°F) | 12 mm | 36% | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
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