Weather on December 21 in Perth

Historical weather data for December 21 in Perth, Australia

Avg High29°C (85°F)
Avg Low17°C (63°F)
Warmest201631°C
Coldest200016°C

Based on 54 years of data from PERTH REGIONAL OFFICE

About This Date

December 21st in Perth, Australia typically brings warm winter weather, with average highs around 29°C and lows near 17°C. Over 54 years of records, the warmest December 21st was in 2016 (31°C average), while the coldest was 2000 (16°C) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 7% of December 21st dates historically. The last decade has been 8.5°F warmer on this date compared to 20-30 years ago.

The last decade has been 8.5°F warmer on this date compared to 20-30 years ago.

Planning for December 21st in Perth? Stay hydrated and seek shade during peak afternoon hours.

Year by Year History

YearHighLowPrecip
202526°C (78°F)14°C (57°F)0"
202438°C (100°F)20°C (68°F)0"
202337°C (99°F)22°C (72°F)0"
202234°C (93°F)19°C (67°F)--
202130°C (86°F)18°C (65°F)0"
202033°C (91°F)16°C (60°F)0"
201934°C (94°F)16°C (60°F)0"
201837°C (99°F)18°C (64°F)0"
201736°C (97°F)14°C (58°F)0"
201642°C (108°F)21°C (69°F)0"
201536°C (96°F)17°C (63°F)0"
201429°C (84°F)16°C (61°F)0"
201329°C (84°F)14°C (58°F)0"
201230°C (86°F)19°C (67°F)0"
201129°C (85°F)17°C (63°F)0"
201034°C (93°F)17°C (63°F)0.44"
200932°C (90°F)22°C (71°F)0"
200823°C (74°F)16°C (61°F)0.2"
200724°C (75°F)13°C (55°F)0"
200627°C (80°F)19°C (67°F)0"
200523°C (74°F)12°C (53°F)0"
200424°C (76°F)16°C (60°F)0"
200330°C (86°F)13°C (56°F)0"
200231°C (87°F)20°C (68°F)0"
200126°C (79°F)15°C (59°F)0"
200021°C (69°F)12°C (53°F)0"
199936°C (97°F)19°C (66°F)0"
199832°C (89°F)12°C (54°F)0"
199729°C (85°F)17°C (62°F)0"
199624°C (76°F)17°C (63°F)0"
199524°C (76°F)15°C (59°F)0.04"
199431°C (87°F)16°C (60°F)0"
199324°C (75°F)12°C (54°F)0"
199138°C (101°F)19°C (67°F)0"
199023°C (74°F)16°C (61°F)0"
198924°C (75°F)21°C (69°F)0"
198829°C (84°F)18°C (65°F)0"
198729°C (85°F)21°C (70°F)0"
198629°C (85°F)20°C (68°F)0"
198523°C (73°F)12°C (53°F)0"
198426°C (79°F)19°C (66°F)0"
198334°C (94°F)18°C (65°F)0"
198226°C (79°F)21°C (69°F)0"
198126°C (78°F)16°C (60°F)0"
198020°C (68°F)17°C (62°F)0.04"
197931°C (88°F)19°C (67°F)0"
197826°C (79°F)21°C (69°F)0"
197731°C (87°F)19°C (66°F)0"
197623°C (74°F)18°C (64°F)0"
197537°C (99°F)23°C (73°F)0"
197425°C (77°F)22°C (71°F)0"
197329°C (85°F)16°C (60°F)0"
197226°C (79°F)19°C (66°F)0"
197127°C (81°F)14°C (58°F)0"

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