September 2023

El Nino impacts copy. BoM copy.

SUMMARY

Very much warmer than the normal September, and generally drier than the month saw September taking the cake this year.

TEMPERATURE

Much higher than the normal month has resulted in higher than average temperatures. The average minimum temperature was 7.9 degrees (30-year average was + 0.7 degrees) and the average maximum temperature was 20.2 degrees (30-year average was +3.1 degrees).

RAINFALL

Lower than average rainfall has been the lowest El Nino rainfall for all months this year. Geelong reached 6.8 mm for September which is the lowest rainfall for the year so far.

OTHER FEATURES

Violent wind gusts stronger than 60 km/hr saw two days exceed strong winds on the 7th and 8th.  Geelong had very strong winds over 67 km/hr on both days, showing winds 67 and 78 km/hr on both days.  On the 8th, Avalon reached 102 km/hr, Point Wilson 96, Geelong 78, Breamlea 79, Werribee 90, and several suburbs like Bell Post Hill 100 km/hr showing serious S.E.S. damage.

RAIN IN GEELONG REGION

Location
Total for
Month
(mm)

Monthly
Average
(mm)

Aireys Inlet  10.2

(71.9)

Anakie         9.8

(n.a.)

Anglesea     36.8

(70.5)

Bacchus Marsh  7.8

(41.5)

Ballarat Aero    22.6

(73.0)

Beeac         27.4

(59.9)

Beech Forest (Otway Fly)  101.6

(180.8)

Boonah      23.8

(n.a.)

Benwerrin   53.8

(n.a.)

Cape Otway  37.8

(89.6)

Colac

(68.0)

Curlewis     3.5

(68.6)

Dereel  24.2

(68.6)

Inverleigh   23.4

(51.6)

Lorne

(102.2)

Laverton  5.8

(53.0)

Melbourne (City)  10.8

(59.4)

Meredith (Darra)   24.4

(70.4)

Mt Buninyong       26.8

(n.a.)

Mt Gellibrand       25.2

(n.a.)

Mt Cowley           63.6

(n.a.)

Mt Sabine           71.4

(n.a.)

Ocean Grove

(n.a.)

Point Lonsdale    13.4

(59.2)

Shelford             11.0

(54.6)

Sheoaks              14.8

(n.a.)

Skipton               26.0

(n.a.)

St Leonards

(58.0)

Sutherlands Creek   9.2

(47.7)

Winchelsea          22.0

(53.0)

Werribee              6.0

(44.4)

Wooloomanata    6.8

(46.0)

GEELONG SUBURBS

Location Total for
Month
(mm)
Monthly
Average
(mm)
Armstrong Creek 9.4 (45.9)
Avalon 5.6 (45.9)
Belmont 14.0 (50.2)
Belmont 13.2 (50.0)
Breakwater 6.8 (49.7)
Charlemont 9.4 (60.3)
Corio 6.4 (46.6)
Grovedale 7.4 (51.0)
Grovedale South 14.5 (51.0)
Hamlyn Heights 7.6 (51.9)
Herne Hill na (51.9)
Highton 9.2 (51.0)
Lara 5.0 (47.5)
Leopold 7.7 (50.8)
Leopold East na (50.8)
Manifold Heights na (51.9)
Marshall 7.4 (51.0)
Moolap 3.6 (52.0)
Mt Duneed 13.6 (49.7)
Queens Park 6.0 (51.0)
Waurn Ponds 6.8 (49.7)
Whittington 6.6 (50.3)
Urban Area Average 10.0 (50.8)