September Summary

Near average temperature and rainfall, below average wind run.

  • September was near my average temperature of 9.8C with 9.7C, the warmest was 2002 with 11.1C.
    • The warmest temperature was 24.2C, my September record is 25.9C in 2017
    • The coldest temperature was -1.8C, the lowest September temperature I've recorded is -3.1C in 2000 and 2007.
    • One day recorded an air temperature at or below 0, my average is 3.
    • Just 1 day failed to reach 10C, my average is 2.
    • Fifteen days reached or exceeded 15C, my average is 16.
  • Wind run was 86% of my average of 4753km with 4101km. The windiest September I've recorded was 2003 with 5356km.
  • The barometer recorded above average pressure for the month with 1013.3hPa. My average is 1010.8hPa.
  • Rainfall was near average expected total of 46.8mm with 45mm with just 4 days of recorded rainfall, the least number of days in my September records. The driest September I've recorded is 2006 with 5mm.
    • The wettest September was 2000 with 101mm.
September 2018 Summary
Temperature
Mean 9.7 C
Mean Maximum 16.0 C
Mean Minimum 4.8 C
Maximum High 24.2 C (14th)
Maximum Low 9.8 C (14th)
Minimum High 9.4 C (3rd)
Minimum Low -1.8 C (7th)
Wind Speed and Direction
Maximum Gust 57 km/h (3rd)
Mean 6.0 km/h
Wind Run 4101 km
Max Daily Windrun 364 km (3rd)
Prevailing Direction East North East
Barometer
Maximum 1036.5 hPa (5th)
Minimum 982.5 hPa (2nd)
Mean 1013.3 hPa
Max Daily Change +31.8 hPa (3rd)
Rainfall
Days with Measured Rainfall
(0.5mm or more)
4
Max Daily Rainfall 23 mm (3rd)
Monthly Rainfall 45.0 mm
Humidity
Maximum 100 % (Several days)
Minimum 24 % (20th)

 

 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.
24 6.1 14.7 9.8 4.9 34 111 East Nth East 4.5 12 995.1 1006.6 -11.5
Mostly cloudy with some sunny intervals, some showers during the day, a period of heavy rain in the evening with a southerly change.
25 3.5 14.3 7.9 11.3 47 258 South Sth West 1.0 6.5 992.2 999.5 -7.3
Cold southerly winds and shower in the morning. Showers clearing to a sunny afternoon with wind dying away from late afternoon.
26 2.2 13.4 8.3 9.1 39 207 South Sth West 0 0 992.3 1011.2 +18.9
Morning cloud breaking to a sunny afternoon with cold southerly winds.
27 5.1 16.6 10.4 3.4 24 77 South Sth West 0 0 1011.4 1019.4 +8.0
Some cloud but mostly sunny with southerly winds turning NE in the evening.
28 2.3 16.5 10.0 4.5 24 102 East Nth East 0 0 1019.2 1021.0 +1.8
Sunny with a few clouds, cool NE wind.
29 2.2 20.7 11.7 3.8 29 87 East Nth East 0 0 1014.4 1019.8 -5.4
Sunny with light NE winds turning northerly later in the afternoon with increasing high cloud.
30 9.1 16.8 11.9 4.5 28 99 North Nth East 0 0 1014.9 1018.4 -3.5
Overcast with variable light breezes, cool morning, maximum temperature recorded at 5pm.

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September 2018  Temperature Graph
September 2018 Wind Dir Graph
September 2018 Wind Dir Graph
September 2018 Wind Speed Graph
September 2018 Rainfall Graph
September 2018 Barograph
September 2018 Humidity Graph