Weather on September 21 in Perth

Historical weather data for September 21 in Perth, Australia

Avg High21°C (69°F)
Avg Low11°C (52°F)
Warmest198322°C
Coldest197212°C

Based on 53 years of data from PERTH REGIONAL OFFICE

About This Date

September 21st in Perth, Australia typically brings mild fall weather, with average highs around 21°C and lows near 11°C. Over 53 years of records, the warmest September 21st was in 1983 (22°C average), while the coldest was 1972 (12°C) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 49% of September 21st dates historically, with the wettest September 21st recording 1.36" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.

The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.

Planning for September 21st in Perth? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.

Year by Year History

YearHighLowPrecip
202527°C (81°F)10°C (50°F)0.02"
202420°C (68°F)8°C (46°F)0"
202325°C (77°F)9°C (49°F)0"
202221°C (70°F)9°C (49°F)0.02"
202126°C (79°F)13°C (55°F)0"
202018°C (65°F)11°C (52°F)0.34"
201919°C (66°F)6°C (42°F)0"
201825°C (77°F)9°C (48°F)0"
201722°C (71°F)17°C (63°F)0.38"
201623°C (74°F)5°C (41°F)0"
201523°C (74°F)9°C (49°F)0"
201422°C (71°F)16°C (61°F)0"
201322°C (71°F)9°C (49°F)0.2"
201222°C (71°F)13°C (55°F)0.12"
201120°C (68°F)12°C (54°F)0.1"
201026°C (78°F)7°C (45°F)0"
200918°C (64°F)13°C (55°F)0.26"
200817°C (63°F)13°C (55°F)0.34"
200722°C (71°F)8°C (47°F)0"
200621°C (69°F)14°C (58°F)0.46"
200517°C (62°F)12°C (54°F)0.56"
200416°C (61°F)10°C (50°F)0.22"
200319°C (67°F)12°C (53°F)0.02"
200219°C (66°F)13°C (55°F)0"
200122°C (71°F)8°C (47°F)0"
200023°C (74°F)7°C (45°F)0"
199917°C (62°F)13°C (56°F)0.3"
199816°C (60°F)8°C (47°F)1.14"
199722°C (71°F)13°C (55°F)0"
199622°C (72°F)8°C (46°F)0"
199519°C (67°F)6°C (43°F)0"
199419°C (67°F)13°C (56°F)0"
199120°C (68°F)9°C (49°F)0"
199019°C (67°F)7°C (44°F)0"
198921°C (69°F)13°C (56°F)0.7"
198820°C (68°F)13°C (56°F)0.7"
198723°C (73°F)11°C (52°F)0"
198619°C (67°F)11°C (52°F)0.16"
198518°C (64°F)15°C (59°F)0.22"
198422°C (71°F)9°C (48°F)0"
198329°C (84°F)15°C (59°F)0"
198219°C (67°F)15°C (59°F)0.94"
198117°C (63°F)9°C (49°F)0"
198019°C (67°F)14°C (57°F)0.06"
197919°C (67°F)13°C (56°F)1.36"
197819°C (66°F)11°C (51°F)0.22"
197718°C (64°F)17°C (62°F)0"
197624°C (75°F)11°C (51°F)0"
197518°C (64°F)13°C (56°F)0.22"
197420°C (68°F)11°C (51°F)0"
197321°C (70°F)9°C (48°F)0"
197218°C (64°F)6°C (43°F)0.2"
197120°C (68°F)13°C (56°F)0.36"

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