December 2017

TEMPERATURE

December was warmer than the latest 30-year average by 1.6 degrees C.  Daily maximums averaged 24.6 C and minimums 13.8 C, compared to 23.4 C and 11.8 C.

There were 4 days over 30 degrees and the maximum was 38.6 C on the 16th.  Lowest overnight temperature was 8.6 C on the 5th and highest was 22.9 on the 28th.

RAINFALL

In a stripe-like pattern, the region’s rainfall progressed from generally above average conditions around the Bellarine Peninsula to just around average at Geelong to well below average across the Otway Ranges.

Geelong had only 8 rain days and the maximum fall of 9.4 mm occurred by 9am on the 8th.  Despite some very severe downpours in Melbourne on several days, Geelong was only on the fringe of storms to record a total of 40.8 mm at Breakwater and averaging 40 mm across the urban area.

OTHER FEATURES

There were 2 thunder-days and just one very windy day (61 km/h) at Breakwater on the 19th.

RAINFALL DATA

GEELONG REGION
Location Total for Month (mm) Monthly Average (mm)
Aireys Inlet 36.4 34.0
Anakie 38.8 55.0
Anglesea na 48.0
Apollo Bay 71.2 63.2
Bacchus Marsh 43.4 47.1
Ballan na 45.9
Ballarat 60.8 51.6
Bannockburn 23.8 42.0
Barwon Heads Golf Club na 47.0
Bellbrae na 54.0
Beeac 24.4 42.4
Beech Forest (Fly) 113.0 96.4
Benwerrin 34.4 n.a.
Birregurra 23.4 42.4
Boonah 30.2 n.a.
Cape Otway 35.4 52.7
Clifton Springs 62.6 n.a.
Colac na 46.6
Cressy na 42.7
Curlewis Golf Club 43.8 44.2
Dereel na 44.2
Drysdale na 44.7
Durdidwarrah na 55.1
Forrest na 60.3
Gellibrand na n.a.
Gerangamete na n.a.
Inverleigh 20.8 45.5
Lal Lal 49.2 n.a.
Laverton 82.0 45.0
Lethbridge na 55.9
Melbourne (City) 128.2 59.0
Meredith na n.a.
Meredith (Darra) 37.4 51.8
Moriac 24.0 n.a.
Morrisons na 47.0
Mt Buninyong 51.0 n.a.
Mt Cowley 57.6 85.0
Mt Gellibrand 26.4 na
Mt Mercer 47.8 n.a.
Mt Sabine 58.0 90.0
Point Lonsdale 34.8 45.0
Pollocksford 26.0 n.a.
Ocean Grove na 45.5
Queenscliff 38.8 43.4
Shelford na 45.0
Sheoaks 32.4 29.2
Skipton na 46.4
St Leonards na 45.0
Sutherland’s Creek na na
Teesdale na 39.9
Torquay na 40.0
Wallington na n.a.
Wyelangta na 120.7
West Barwon Dam na 65.0
Winchelsea na 41.1
Wooloomanata na n.a.
You Yangs na n.a.
GEELONG SUBURBS
Location Total for Month (mm) Monthly Average (mm)
Armstrong Creek 38.8 28.1
Avalon 46.8 28.1
Bell Post Hill 34.7 47.8
Belmont 26.0 44.0
Breakwater Racecourse 40.8 41.0
Charlemont 45.7 na
Ceres na 44.0
Corio 37.0 42.0
Drumcondra na 41.0
East Geelong na 41.0
Grovedale na 44.2
Grovedale South 39.0 44.2
Hamlyn Heights na 42.0
Herne Hill na 42.0
Highton 36.6 44.2
Lara 43.8 42.0
Leopold 45.0 53.9
Leopold North 52.0 42.0
Manifold Heights 44.5 47.8
Moolap 37.6 38.0
Moolap Salt Works 42.4 42.2
Whittington 28.2 42.0
Urban Area Average 40.0 41.9