A typical September from my records;

  • An average temperature of 9.8C
    • Maximum temperature expected about 23C.
    • Minimum temperature expected about -1C.
    • Two days fail to reach 10C.
    • Sixteen days are expected to reach or exceed 15C
    • Five days are expected to reach or exceed 20C.
    • On average no September days reach or exceed 25C though 2 days in 2017 did, the 15th with 25.0C and the 25th with 25.9C.
  • Wind run would be around 4750km with the windiest day expected to have a wind run of 330km.
    • Maximum wind gust would be in the region of 60km/h.
  • There would be rain on 10 days with the monthly total of around 50mm.

Rain totals for the month and year along with temperature and wind comparisons can be found here.

 September 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 6.4 16.0 9.3 7.5 34 170 East Nth East 0 0 991.5 1000.5 -9.0
Morning cloud clearing to a sunny afternoon with light SW breezes turning NE from mid afternoon.
2 4.9 11.7 8.1 5.1 30 115 South West 0 0 982.5 991.4 -8.9
Overcast and cool with light winds during the day. Light showers later in the afternoon with southerlies increasing.
3 5.7 9.4 7.2 15.9 57 364 South West 1.0 23.0 988.9 1020.7 +31.8
Rain with cold southerly winds in the morning. Showers in the afternoon with winds easing later in the afternoon.
4 5.4 12.1 7.7 6.0 34 135 South Sth West 0.5 3.5 1021.0 1035.4 +14.4
Showers morning and afternoon, some sunny intervals around the middle of the day, cool southerly winds.
5 3.9 13.6 7.6 2.7 18 62 East Nth East 0 0 1032.3 1036.5 -4.2
Variable cloud with sunny intervals, light NE wind.
6 1.3 14.0 6.6 2.3 20 54 East Nth East 0 0 1029.5 1032.8 -3.3
Sunny morning, cloud increasing from midday and clearing in the evening. Light NE winds.
7 -1.8 11.4 4.6 2.6 23 60 East Nth East 0 0 1027.1 1031.9 -4.8
Morning frost, variable cloud with a cool NE wind.
8 1.8 11.5 6.6 4.2 27 96 East Nth East 0 0 1017.7 1026.9 -9.2
Morning cloud clearing to a sunny afternoon with a cool NE wind.
9 1.2 13.6 6.2 2.0 20 45 East Nth East 0 0 1006.8 1017.5 -10.7
Morning cloud clearing to a sunny afternoon with a cool NE wind.
10 3.5 13.9 7.4 2.0 17 44 South Sth West 0 0 1005.6 1010.5 +4.9
Morning cloud breaking to a sunny afternoon with a cool southerly wind.
11 4.1 16.5 9.3 3.4 23 77 South Sth West 0 0 1010.6 1019.1 +8.5
Variable cloud, feeling mild in the afternoon compared to recent days, light southerly breezes.
12 4.1 18.4 10.3 6.0 27 138 East Nth East 0 0 1015.4 1019.0 -3.6
Sunny with light southerly breezes in the morning turning cooler NE in the afternoon. Some high cloud thickening in the afternoon.
13 5.2 22.5 13.0 2.4 24 54 East Nth East 0 0 1012.3 1016.5 +4.2
Variable high cloud, warm in the afternoon with a change to N to NW winds. This is the warmest day since the 20 April or 146 days ago.
14 9.8 24.2 14.9 6.5 38 147 East Nth East 0 0 1014.7 1022.4 +7.7
Clear and sunny with light southerly breezes turning cooler NE in the afternoon.
15 7.7 22.6 13.6 5.8 28 132 East Nth East 0 0 1016.7 1021.6 -4.9
Clear and sunny with variable NE winds.
16 5.8 23.7 14.3 5.9 39 134 East Nth East 0 0 1007.2 1016.5 -9.3
Another pleasant spring day, sunny with mild northerly winds from late morning turning NE in the evening.
17 7.5 15.0 11.0 7.8 26 178 West 0 0 1006.7 1011.3 +4.6
Overcast with a few spots of rain in the afternoon, west to SW winds.
18 5.0 16.7 9.9 7.3 27 168 East Nth East 0 0 1010.0 1022.6 +11.6
 
19 8.1 14.2 10.8 11.9 38 271 East Nth East 0 0 1011.4 1021.6 -10.2
Some high cloud with a cool NE wind, fresh at times.
20 6.0 22.3 11.9 4.4 25 101 East Nth East 0 0 1001.2 1011.1 -9.9
Morning fog clearing to a mild spring afternoon with some high cloud and light winds tending NE.
21 6.6 13.8 9.8 9.3 37 211 South West 0 0 1001.4 1015.4 +14.0
Cloudy with a cool southerly wind.
22 1.9 16.3 9.6 6.2 28 141 East Nth East 0 0 1014.6 1017.9 -3.3
Sunny with a cool NE wind later in the morning.
23 8.7 14.8 10.8 10.8 34 248 East Nth East 0 0 1004.1 1014.7 -10.6
Mostly cloudy with a few sunny intervals later in the morning, cool NE wind dying away from late afternoon and turning southerly in the evening.
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