Weather on December 18 in Perth

Historical weather data for December 18 in Perth, Australia

Avg High29°C (85°F)
Avg Low18°C (64°F)
Warmest198731°C
Coldest201717°C

Based on 54 years of data from PERTH REGIONAL OFFICE

About This Date

December 18th in Perth, Australia typically brings warm winter weather, with average highs around 29°C and lows near 18°C. Over 54 years of records, the warmest December 18th was in 1987 (31°C average), while the coldest was 2017 (17°C) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 9% of December 18th dates historically, with the wettest December 18th recording 2.22" of rain. The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.

The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.

Planning for December 18th in Perth? Stay hydrated and seek shade during peak afternoon hours.

Year by Year History

YearHighLowPrecip
202531°C (88°F)16°C (61°F)0"
202429°C (84°F)19°C (66°F)0"
202331°C (88°F)17°C (62°F)0"
202233°C (92°F)18°C (65°F)0"
202124°C (76°F)15°C (59°F)0"
202031°C (88°F)17°C (62°F)0"
2019--21°C (69°F)0"
201826°C (78°F)16°C (60°F)0"
201721°C (70°F)12°C (54°F)2.22"
201624°C (76°F)16°C (60°F)0"
201526°C (78°F)17°C (62°F)0"
201430°C (86°F)16°C (60°F)0"
201328°C (82°F)19°C (66°F)0"
201225°C (77°F)18°C (65°F)0"
201126°C (78°F)17°C (63°F)0"
201031°C (87°F)15°C (59°F)0"
200934°C (93°F)16°C (60°F)0"
200832°C (89°F)16°C (60°F)0"
200724°C (76°F)17°C (62°F)0.58"
200631°C (88°F)21°C (69°F)0"
200533°C (91°F)16°C (60°F)0"
200426°C (79°F)13°C (56°F)0"
200322°C (71°F)19°C (67°F)0.32"
200236°C (96°F)18°C (65°F)0"
200126°C (79°F)15°C (59°F)0"
200030°C (86°F)16°C (61°F)0"
199934°C (94°F)20°C (68°F)0"
199826°C (79°F)16°C (60°F)0"
199728°C (82°F)15°C (59°F)0"
199634°C (94°F)18°C (64°F)0"
199532°C (90°F)15°C (59°F)0"
199432°C (89°F)22°C (71°F)0"
199332°C (89°F)18°C (64°F)0"
199123°C (74°F)21°C (69°F)0"
199023°C (74°F)14°C (58°F)0"
198927°C (80°F)14°C (57°F)0"
198834°C (93°F)19°C (66°F)0.22"
198741°C (106°F)21°C (70°F)0"
198635°C (95°F)19°C (66°F)0"
198521°C (70°F)16°C (60°F)0.14"
198424°C (76°F)14°C (58°F)0"
198328°C (82°F)17°C (63°F)0"
198236°C (96°F)18°C (65°F)0"
198123°C (74°F)13°C (55°F)0"
198024°C (76°F)21°C (69°F)0"
197930°C (86°F)27°C (81°F)0"
197831°C (88°F)19°C (67°F)0"
197737°C (99°F)21°C (69°F)0"
197637°C (98°F)23°C (73°F)0"
197532°C (89°F)14°C (58°F)0"
197433°C (91°F)19°C (67°F)0"
197331°C (87°F)23°C (73°F)0"
197227°C (81°F)20°C (68°F)0"
197128°C (83°F)17°C (62°F)0"

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