Summary of 2011 Weather

(Most figures are from the Bureau of Meteorology station at Mount Duneed – called “Geelong AP AWS” until June 1st, then at Breakwater “Geelong Racecourse AWS” from June 2nd, with all temperature and rainfall averages from 1992-2010)


Month Weather Conditions Temps (deg C) Rainfall (mm) Cumulative Rainfall Comments
JAN Warmer than normal by 0.9C. 4 days >30C, top 39.0C on 30th. On 31st the max was 24C but 9am cutoff next morning increased it to 33.9C. Lowest minimum was 8.7C on 2nd. Av max 25.3. Jan av max. is 24.5. Av min 14.0. Av is 13.0. Mt Duneed 129.4 mm. Urban area averaged 130mm.

January normal is 37.3 mm.

Mt Duneed 129.4 mm.

Urban area 130 mm.

Normal Geelong AP cumulative total (1 month) is 37.3mm.

Massive rainfalls across whole region. Wettest Jan since 1981.   Catchments 77.2% Moderate Barwon floods but little disruption. 1 thunder day; no severe storms. 3 windy days >60kph.
FEB Cooler by 0.7C. 1 day >30C. (39.6C on 1st). Lowest max 17.4C on 28th. 2 strong wind days, incl 98kph on 19th and 72kph on 1st. Av max 23.0.   Feb av max. is 24.9. Av min14.2. Av is 13.7. Mt Duneed 70.4 mm.   Urban area averaged 90 mm.   February normal is 29.8. Mt Duneed 199.8 mm.

Urban area 220 mm.

Normal Geelong AP cumulative total (2 months) is 67.1 mm.

Wettest spring-summer since 1871. 2nd wettest summer (260mm cf av 112mm). 2 severe storms on 4th and 19th with wind and flood damage. Catchments 78%. 1 thunder day.
MAR Cooler by 0.6C. 3 days >30C. Highest 32.0C on 7th. 1 foggy day throughout. 1 very windy day (67kph on 30th). Generally settled weather. Av max 21.8 .

March av max. is 23.1. Av min 12.1 .

Av is 12.0.

Mt Duneed 33.4 mm

Urban area averaged 32 mm.

March normal is 31.9.

Mt Duneed 233.2 mm.

Urban area 252 mm.

Normal Geelong AP cumulative total (3 months) is 99.0 mm.

Average to above rainfall in urban and southern areas. Highest 24 hr fall of 29.0mm at 9am on 10th. 8th successive month above av. No storms, no thunder days. Catchments 74%.
APR Cooler by 0.45C. Warmest 27.7C on 9th, min 5.0C on 11th. Several foggy days. 1 very windy day (65kph on 9th). Very settled high pressure weather. Av max 20.0.

April av max. is 20.3. Av min 8.9.

Av is 9.5.

Mt Duneed 40.4 mm

Urban area averaged 40 mm.

April normal is 45.5.

Mt Duneed 273.6 mm.

Urban area 292 mm.

Normal Geelong AP cumulative total (4 months) is 144.5 mm.

Average to below average rain in urban area and Otways. Bellarine Pen well above. BoM 3-monthly outlooks for Feb-Apr very inaccurate. No storms, no thunder days. Catchments 73%.
MAY Cooler by 1.0 degree C. Coldest May in 20 years. Coldest autumn since 1996. No frosts, one windy day (61 kph on 13th).   Generally very settled. Av max 15.5.

May av max is 17.0.

Av min7.4.

Av is 7.9.

Mt Duneed 47.6mm

Urban area averaged 45 mm

May normal is 46.5.

Mt Duneed 321.2 mm.

Urban area 337 mm.

Normal Geelong AP cumulative total (5 months) is 191.0 mm.

Av to above av rains, esp for S and E areas. Autumn rains generally 95-100% of average. No storms. But funnel cloud photographed over Bell Pen on 29th. Catchments 72%.
JUNE AWS moved to Racecourse at Breakwater on 2nd. Avalon AP slightly colder than average by 0.3 C. Warmest 20.0 on 2nd, coldest day 10.5 on 21st, coldest overnight 1.5 on 16th. (-0.7 at Mt Duneed on 1st) 2 frosts. Av max 14.9.

June av max at Mt D is 14.4

Av min 6.8.

Av at Mt D is 6.2.

Breakwater 32.8.

Urban area averaged 40 mm.

June normal is 42.2.

Mt D – Bkwtr 354.0 mm.

Urban area 377 mm.

Normal Geelong AP cumulative total (6 months) is 233.2 mm.

Av to below av rain, but sthn areas & Otways well above. Hail on 7th, Otway snow 8th. 1 thunder day and 4 very windy days. No severe storms.

Catchment 76.1%.

JULY Slightly above av temps (0.3 C est.) Highest 20.3 on 31st, coldest day 10.5 on 23rd.   Coldest night -0.6 on 16th. Av max 14.1

July av max at Mt D is 14.0.

Av min 6.6.

Av at Mt D is 5.5.

Breakwater 36.8.

Urban area averaged 45 mm.

July normal is 49.2.

Mt D- Bkwtr 390.8 mm.

Urban area 422 mm.

Normal Geelong AP cumulative total (7 months) is 282.4 mm.

Av to above av rain south of city, below av to north. Otways well above av. Catchments 86%. No storms, no thunder days, one frost on 16th, 4 strong wind days incl 72 kph on 5th
AUG Slightly (0.6C?) above av. Temps. Warmest 1st 4 days in Aug. Highest 22.8 on 3rd, coldest day 11.2 on 13th. 3 frosts, incl 1.2 on 12th. Av max 16.6

Aug av max at Mt D is 15.0.

Av min 6.4.

Av at Mt D is 5.8.

Breakwater 19.6.

Urban area averaged 25 mm.

August normal is 49.1.

Mt D – Bkwtr 410.4mm.

Urban area 447 mm.

Normal Geelong AP cumulative total (8 months) is 331.5 mm.

Below av rain across region (50-60%). Catchments 92.5%. No storms, generally high pressure dominated, 1 windy day 65 kph on 25th), no thunder days, 3 frosts.
SEPT Above av. Temps by estimated 0.6 deg C. Warmest day 28.8 deg on 19th.   No frosts. Coldest night 2.3 deg on 8th. Av max 18.6

Sept av max at Mt D is 16.6

Av min 8.0.

Av at Mt D is 6.6.

Breakwater 33.8.

Urban area averaged 35 mm.

September normal is 49.7.

Mt D – Bkwtr 444.2mm.

Urban area 482 mm.

Normal Geelong AP cumulative total (9 months) is 381.2 mm.

Below av rain across region (70-90%). Catchments 90.2%. 2 thunder-lightning days but no severe storms.6 strong wind days (top 76kph on 19th) – minor damage reported.
OCT Above av. Temps by est. 1.1 deg C. Warmest day 30.8C on 19th; coldest overnight 4.1C on 18th. No frosts.   1 strong wind day (63kph on 16th). Av max 19.9

Oct av max at Mt D is 18.6.

Av min 10.0.

Av at Mt D is 7.6.

Breakwater 67.6.

Urban area averaged 72 mm.

October normal is 51.3.

Mt D – Bkwtr 511.8 mm.

Urban area 554 mm.

Normal Geelong AP cumulative total (10 months) is 432.5 mm.

Well above av. rain across region.

Catchments 90%. 2 thunder days but no severe storms. Most rain on 1st (23mm) and 29-30th (20mm), only minor flooding, no great damage.

NOV Above av temps by est 2.0 deg C. 3 days >30 deg. Warmest day 36.8 on 18th. Lowest max 15.2 on 2nd. 1 strong wind day (63 kph on 30th). Av max 23.3

Nov av max is 20.6.

Av min 11.9.

Av is 9.5.

Breakwater 136.4.

Urban area averaged 110 mm.

November normal is 52.8.

Mt D – Bkwtr 648.2mm.

Urban area 664 mm.

Normal Geelong AP cumulative total (11 months) is 485.3 mm.

Well above av rain most areas. Otways just below. Catchments 87%. 6 thunder days. 1 severe storm w/flash flooding (89 mm on 27th – wettest Nov day). Much damage. 1 tornado near Skipton on 9th.
DEC Warmer by about 0.3 C. Warmest day 35.2 C on 31st. Highest min 19.2 C on 9th. Nil strong wind gusts. 4 thunder-days. Av max 22.7

Dec av max is 22.7.

Av min 12.9.

Av is 11.0.

Breakwater 21.8.

Urban area averaged 22 mm.

December normal is 40.1.

Mt D – Bkwtr 670.0 mm

Urban area 686 mm.

Normal Geelong AP cumulative total (12 months) is 525.4 mm.

Generally well below av rain except on Bellarine Pen. 1 severe storm with flash flooding in Curlewis – Drysdale – Clifton Springs on 10th. Also tornado with large hail W of Ballan on 25th. Catchments 86.3%.


OVERALL: New records (extremes) set: Wettest November day (89 mm on 27th), Wettest spring-summer since 1871; Warmer by est 0.5 deg C (1992-2010 mean 14.2C); Tornadoes: 2 – near Skipton (9th Nov) and Ballan (25th Dec) and funnel cloud on May 9th; Willy-willies: nil; Hottest Day: 39.6C on 1st Feb; Warmest Night: 20.4C on 13 th Jan ; Coldest Day: 10.5C on 21st June& 23rd July; Coldest Night: minus 0.7C on 1st June ; Wettest Day: 89 mm to 9am on 27th Nov (Nov record); Wettest Month: Nov 136.4 mm ; Driest Month: August 19.6 mm; No of Days above 30°C: 14 (average 21); Number of “Thunder Days” in Urban area: 19 (14 in 2010) ; Number of severe storms: 4 ; Fatalities: nil; Strongest Wind Gust: 98 kph on 19th Feb at Mt Duneed; Number of frosts: 6 (av = 15); Number of windy days (gusts >60kph): 25 (48 in 2010).

Copyright Ó Geelong Weather Services, 2011