A typical January from my records;

  • An average temperature of 16.6C.
    • Maximum temperature expected about 32C.
    • Minimum temperature expected about 6C.
    • Twenty two days are expected to reach or exceed 20C.
    • Nine days are expected to reach or exceed 25C.
    • Three days are expected to reach or exceed 30C.
    • No days would reach or exceed 35C on average though 1 January day in 2009 and 2016 did.
  • Wind run would be around 5652km with the windiest day expected to have a wind run of 340km.
    • Maximum wind gust would be in the region of 60km/h.
  • There would be rain on 8 days with the monthly total of around 40mm.
  • Rain totals for the month and year along with temperature and wind comparisons can be found here.
January Daily Observations
TemperatureWindRainfallBarometer
DateMinMaxMeanMean
(Km/h)
Gust
(Km/h)
Run (km)Prevailing Dir10 Minute Max (mm)Total (mm)Min (hPa)Max (hPa)Change (hPa)
1 13.0 23.5 17.2 7.1 32 159 East Nth East 0 0 1008.6 1011.5 +2.9
Mostly cloudy morning with sunny intervals in the afternoon. Light southerly breezes turning NE from late morning.
2 15.6 27.3 19.4 5.8 26 132 East Nth East 0 0 1009.0 1011.9 +2.9
Morning low cloud lifting and clearing to a sunny and warm afternoon. Variable light breezes turning NE in the afternoon, low cloud returning in the evening
3 16.5 29.0 19.9 6.6 36 151 East Nth East 0 0 1007.7 1011.8 -4.1
Early drizzle clearing and low cloud lifting and clearing to a sunny afternoon. Low cloud returning from late afternoon with increasing NE wind.
4 16.6 25.6 20.2 5.0 24 112 East Nth East 0 0 1004.3 1009.0 -4.7
Variable cloud with sunny intervals, overcast from mid afternoon. Light winds tending southerly turning cooler NE later in the afternoon.
5 13.5 17.7 16.0 10.5 50 240 South Sth West 3.5 44.0 992.0 1004.6 -12.6
Morning rain, heavy at times. Rain easing from late morning. Southerly strengthening in the evening with further showers. Some flooding near the Heathcote river - Stuff report
6 11.9 17.7 14.7 19.5 64 447 South Sth West 0.5 0.5 998.2 1014.4 +16.2
Early showers clearing before dawn. Cloud breaking to a mostly sunny afternoon with fresh to strong southerly winds easing in the evening. The second windiest January day in my records, the windiest is 9th Jan 2003 with 451 km and the second highest wind speed, the highest is 2nd January 2006 with 68km/h
7 8.9 26.3 16.2 5.1 25 116 South Sth West 0 0 1006.5 1014.5 -8.0
Clear and sunny for most of the day with light southerly winds, cloud increasing later in the afternoon with cooler a NE change with light rain in the evening. 
8 14.2 25.9 18.3 9.2 35 208 East Nth East 0 0 1008.6 1016.3 +7.7
Variable cloud but mostly sunny with southerly winds turning NE from early afternoon.
9 16.1 28.4 19.9 6.7 32 151 East Nth East 0 0 1009.7 1012.6 -2.9
Mostly cloudy with some sunny intervals, NE winds turning variable westerly from late morning.
10 12.7 16.5 15.1 7.1 27 162 South West 1.0 15.0 1011.0 1019.4 +8.4
Overcast with morning rain, lighter in the afternoon. Southerly winds. 
11 11.3 15.6 12.8 1.6 18 35 East Nth East 1.0 35.0 1018.0 1021.6 +3.6
Overcast with rain. Light breezes tending NE.
12 11.0 15.9 13.3 4.8 24 109 East Nth East 0.5 6.0 1020.5 1023.0 -2.5
Overcast with a few showers, NE winds.
13 13.3 21.4 16.3 9.5 30 217 East Nth East 0.5 1.0 1011.0 1021.1 -10.1
Overcast with morning drizzle. Drizzle clearing by midday and could breaking to a sunny and mild afternoon. NE winds.
14 13.5 32.1 21.7 7.4 32 167 East Nth East 0.5 0.5 1011.3 1015.1 +3.8
Clear, sunny and very warm with light NE winds in the morning, freshening in the afternoon. 0.5mm of rain from heavy morning dew.
15 16.5 24.0 20.2 12.4 39 285 East Nth East 0 0 1013.3 1016.1 -2.8
Low cloud clearing to a sunny and warm day with NE winds, fresh at times.
16 16.8 26.1 21.0 10.4 34 237 East Nth East 0 0 1010.6 1014.5 -3.9
Some high cloud but mostly sunny and warm with NE winds.
17 18.0 25.0 20.8 7.6 38 171 East Nth East 0.5 0.5 1006.8 1012.2 -5.4
Mostly cloudy with a shower mid afternoon. Warm with NE winds.
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