Monday, 2 December 2019 - Seasonal Climate Summary for Greater Sydney - Product code IDCKGC25L0

Greater Sydney in spring 2019: Warm spring days, below average rainfall

Spring in 2019 was particularly warm for mean maximum temperatures, with overnight temperatures being slightly cooler than average at most locations. After a wetter than average start to spring in September, drier months in October and November resulted in slightly below average spring rainfall overall.

Drier overall

• Overall, rainfall was just below average across Greater Sydney, with the majority of sites recording between 70% and 90% of their typical spring totals
• September was wetter than average, mostly due to a significant rainfall event from 17 to 19 September that resulted in three day totals exceeding 100 mm throughout large parts of the region; Lower Mangrove and Hornsby (Swimming Pool) both recorded over 150 mm during the three day event and several other sites in the north of the region recorded their highest spring daily rainfall on record for the 24 hours to 9 am on the 18th
• October and November saw drier than average conditions
• Sydney (Observatory Hill) recorded 23 rain days during spring, below the average of 34, the wettest day being 18 September with 65.6 mm
• Spring days were sunnier than usual at Sydney Airport, with an average of 8.8 hours of bright sunshine per day, compared to the long-term average of 7.8 hours

Warm spring days

• Daytime temperatures were well above average for spring with each month being warmer than usual and November being particularly warm, setting several new records
• Mangrove Mountain in the north, and Katoomba and Mount Boyce in the Blue Mountains each had their highest spring mean daily maximum temperature on record
• Sydney (Observatory Hill) recorded a mean maximum temperature of 24.3 °C in spring, which is the second-highest on record (behind 2013); almost all sites in Greater Sydney were in the top three warmest on record (except Sydney Harbour (Wedding Cake West))
• Sydney (Observatory Hill) recorded 10 days of 30 °C or above this season, above the spring average of around four days; similarly in the west, Penrith recorded 31 days of 30 °C or above, well above the spring average of 18 days and the highest on record for spring
• Despite the warmth, a cool snap on 17 September brought wintry conditions, with Richmond RAAF and Penrith Lakes recording their coldest spring day (lowest maximum temperature) on record, both more than 10 °C cooler than average on this day
• Minimum temperatures were near the spring average, with overnight temperatures ranging from 1.1 °C below average at Cooranbong to 1.4 °C above average at Sydney Airport

Sydney (Observatory Hill)

• Total rainfall for Sydney (Observatory Hill) was 173.2 mm, which is 76% of the long-term average of 229.2 mm
• The mean daily maximum temperature for Sydney (Observatory Hill) was 24.2 °C, which is 2.2 °C above the long-term average of 22.0 °C and the second-highest on record.
• The warmest day was 37.2 °C on 25 October, and the coolest day was on 17 September when the temperature reached 14.6 °C
• The mean daily minimum temperature for Sydney (Observatory Hill) was 14.6 °C, which is 1.1 °C above the long-term average of 13.5 °C.
• The coldest morning was 8.1 °C on 11 September, and the warmest morning was on 26 October when the minimum temperature was 23.0 °C

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top