Sydney in winter 2014: A wet finish to a warm, dry winter

Winter was the equal-fifth-warmest on record for mean temperatures, with both maximum and minimum temperatures warmer than average across the city, while rainfall and sunshine were close to average. Maximum temperatures were 2 °C above average at Sydney Observatory Hill, the equal-fourth-warmest winter on record, with both June and July recording maximum temperatures in the five warmest years on record.

The warm early-winter temperatures were associated with above average sunshine hours and below average rainfall during both June and July. The two-month rainfall total at Sydney Observatory Hill was just 84.4mm, the driest start to winter since 2004, with only three days recording more than 10 mm of rain. In contrast, August was the wettest for Sydney since 1998, with ten days above 10 mm including a daily fall of 92 mm at Turramurra during an East Coast Low.

  • Equal-fourth-warmest daytime temperatures on record
  • Only 27 days below 18 °C, third-fewest on record (average 61 days)
  • Dry June and July, wet August

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Extremes in winter 2014
Hottest day 25.8 °C at Sydney Airport AMO on 31 Jul
Warmest days on average 19.0 °C at Sydney (Observatory Hill)
Coolest days on average 16.8 °C at Springwood (Valley Heights)
16.8 °C at Terrey Hills AWS
Coldest day 12.0 °C at Terrey Hills AWS on 11 Aug
Coldest night -3.4 °C at Camden Airport AWS on 9 Jul
-3.4 °C at Camden Airport AWS on 12 Jul
Coolest nights on average 4.3 °C at Camden Airport AWS
Warmest nights on average 9.9 °C at Sydney (Observatory Hill)
Warmest night 15.9 °C at Sydney (Observatory Hill) on 1 Aug
Warmest on average overall 14.4 °C at Sydney (Observatory Hill)
Coolest on average overall 11.5 °C at Camden Airport AWS
Wettest overall 423.0 mm at Audley (Royal National Park)
Wettest day 92.0 mm at Turramurra (Kissing Point Road) on 19 Aug
Highest wind gust 96 km/h at Fort Denison on 28 Jun
96 km/h at Kurnell AWS on 28 Jun

Summary statistics for winter 2014
Maximum temperatures
for winter
(°C)
Minimum temperatures
for winter
(°C)
Rainfall
for winter
(millimetres)
Mean for
winter
2014
Diff
from
average
Highest for
winter
2014
Mean for
winter
2014
Diff
from
average
Lowest for
winter
2014
Total for
winter
2014
Average
for
winter
Rank of
winter
2014
Fraction of
winter
average
Badgerys Creek AWS 18.3   24.6 31 Jul 5.3   -1.5 9 Jul 177.4
Bankstown Airport AWS 18.8 +0.8 25.7 31 Jul 6.4 +0.4 -1.1 9 Jul 214.8 170.1 high 126%
Camden Airport AWS 18.6 +0.6 25.0 31 Jul 4.3 +0.5 -3.4 9 Jul 231.4 146.0 high 158%
Campbelltown (Mount Annan) 18.6   24.9 31 Jul 5.1   -2.2 9 Jul 179.6
Canterbury Racecourse AWS 18.3   24.7 31 Jul 6.7   0.0 12 Jul 313.6
Holsworthy Aerodrome AWS 18.3   25.1 31 Jul 6.5   -1.4 9 Jul 183.8
Holsworthy Control Range 18.5   25.3 31 Jul 5.9   -2.1 9 Jul 174.2
Horsley Park Equestrian Centre AWS 18.3   25.0 31 Jul 6.9   0.4 12 Jul 133.0
Parramatta North (Masons Drive) 18.5 +0.4 24.6 31 Jul 7.3 +0.4 1.3 9 Jul 234.0 189.7 average 123%
Penrith Lakes AWS 18.9   25.6 31 Jul 6.5   0.1 9 Jul 150.4
Prospect Reservoir 18.3 +0.6 25.3 31 Jul 7.2 +0.4 2.5 6 Aug 199.8 182.0 average 110%
Richmond RAAF 18.9 +0.5 25.2 31 Jul 4.9   -3.3 4 Jul 130.8 109.3 high 120%
Springwood (Valley Heights) 16.8   23.1 31 Jul 7.3   3.2 7 Aug 166.4 187.3 average 89%
Sydney (Observatory Hill) 19.0 +2.0 25.0 31 Jul 9.9 +1.1 5.5 3 Aug 299.6 310.9 average 96%
Sydney Airport AMO 18.5 +0.9 25.8 31 Jul 9.8 +1.8 4.9 3 Aug 380.2 269.7 high 141%
Terrey Hills AWS 16.8   23.6 31 Jul 8.6   4.0 12 Jul 332.8

Notes

A Seasonal Climate Summary is prepared to list the main features of the weather in Sydney using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 10 am on Monday 1 September 2014. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 20 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, average in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.

Further information

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