January 2020

Mottled sky over Geelong on the 5th after a smoky haze all day.

Smoky day at Balyang Sanctuary on the 6th. Photo Harry de Wit.

Copper sky and Corio Bay on the 13th. Photo 93.9 Radio.

SUMMARY

Geelong and most of the region experienced well above average rain and slightly higher temperatures than the latest 30-year averages.  A severe storm occurred at Avalon on the 15th.  Most of the first half of the month was hazy and smoky from the Gippsland fires.

TEMPERATURE

Daily maximums averaged  26.1 degrees C (compared to 25.4 C) and daily minimums averaged 13.9 degrees C (compared to 13.9 C).  This resulted in a monthly mean of 20.0 C, about 0.4 C above the 30-year average.  There were six days over 30 degrees including two days over 40 degrees. Maximum temperature for the month was 43.4 C on the 31st.

OTHER FEATURES

Around 15 days in the first 23 days were overcast, hazy, smoggy or smoky due to westerly drifting winds over Geelong from the disastrous fires in  Gippsland.

Those days were punctuated by a severe storm on the 15th in the northern suburbs and the Peninsula.  Thunder, lightning and hail occurred over most of Geelong but heavy rain (44 mm in less than an hour) and strong wind gusts caused damage at Avalon, Portarlington, St Leonards and Drysdale.

RAINFALL

Much of the immediate region, Geelong and the Bellarine Peninsula, totalled double or more of the monthly averages as seen in the table below. Much of this rain fell not only in the severe storm mentioned above, but also on the 22nd when Geelong amassed 34.6 mm till 9 am on the 23rd, but this was slow and steady rain which was perfect for gardens and runoff.

On the 22nd and 23rd northerly wind gusts reached 70 km/h and 65 km/h respectively but these did not qualify as a severe storm since there was minimal damage.

RAINFALL DATA

GEELONG REGION
Location Total for
Month
(mm)
Monthly
Average
(mm)
Aireys Inlet 59.0 32.0
Anakie 63.8 40.0
Anglesea 50.2 36.0
Apollo Bay 37.4 52.1
Bacchus Marsh 51.4 33.0
Ballan 85.0 34.9
Ballarat 70.0 39.1
Bannockburn 49.8 30.0
Barwon Heads Golf Club 58.0 33.0
Beech Forest Fly 52.4 75.2
Beeac 31.5 27.9
Bellbrae 48.3 51.1
Boonah 57.6 n.a.
Cape Otway 43.6 43.9
Colac 28.9 43.9
Curlewis Golf Club 53.4 33.8
Dereel 88.1 43.0
Drysdale  115.4 41.4
Indented Head 92.5 50.0
Inverleigh 47.0 36.0
Laverton 87.0 40.0
Melbourne (City) 115.2 48.0
Meredith (Darra) 50.0 40.9
Moriac 51.0 43.9
Mt Buninyong 93.7 n.a.
Mt Gellibrand 27.8 30.0
Mt Mercer 58.6 n.a.
Mt Sabine na n.a.
Ocean Grove 90.8 n.a.
Pollocksford 40.2 36.0
Point Lonsdale 68.7 36.0
Queenscliff 81.6 35.0
Shelford na 33.0
Sheoaks 49.4 n.a.
Sutherlands Creek 43.4 n.a.
St Leonards 127.6 35.0
Shelford na n.a.
Torquay 58.8 29.0
Wallington na n.a.
West Barwon Dam na 52.5
Wensleydale 52.4 25.4
Winchelsea 44.2 35.4
Wooloomanata 48.2 n.a.
GEELONG SUBURBS
Location Total for
Month
(mm)
Monthly
Average
(mm)
Armstrong Creek 48.6 37.0
Avalon 88.4 37.1
Bell Post Hill 61.8 34.8
Belmont na 34.8
Breakwater 74.0 39.4
Charlemont 78.0 38.5
Corio 50.8 na
Grovedale 56.0 na
Grovedale South 50.5 na
Hamlyn Heights na na
Herne Hill 73.0 34.8
Highton 55.0 na
Lara 76.6 na
Leopold 89.5 47.6
Leopold East na 47.6
Leopold North 94.0 48.0
Manifold Heights 69.9 na
Marshall 60.0 38.1
Moolap 72.4 42.0
North Shore (Midway) 59.2 37.0
North Shore (IPL) 60.4 37.0
Queens Park 63.6 n.a.
Waurn Ponds 44.2 38.1
Whittington 64.8 38.2
Urban Area Average 75.0 39.4