September Summary

Above average temperature, rainfall and wind.

  • September was above my average temperature of 9.7C with 10.8C ,the second warmest September I've recorded.
    • The warmest September was 2002 with 11.1C, the coolest, 2001 with 8.3C.
    • The warmest temperature was 25.9C, the warmest September temperature I've recorded.
    • The coldest temperature was 1.0C. The lowest September temperature I've recorded was in 2000 -3.1C.
    • No air frosts were recorded (air temperature 0C or below), my average is 3.
    • Two days failed to reach or exceed 10C, equalling my average.
    • Sixteen days reached or exceeded 15C, equalling my average.
    • Six days reached or exceeded 20C, my average is 5. 2006 had 10 days that reached or exceeded 20C.
    • Two days reached or exceeded 25C, my average is 0 though September 2008 recorded 1 day at or exceeding 25C, the only other year to record 25C or above.
  • Wind run was 108% of my average of 4731km with 5117km. The windiest September I've recorded was 2003 with 5356km. The least windy September was 2011 with 4150km.
  • The barometer recorded bwell elow average pressure for the month with 1001.4hPa. My average is 1011.6hPa. Maximum pressure was just 1017.5hPa whereas my average for September 1032.8hPa
  • Rainfall was 151%% of my average expected total of 45.5mm with 68.5mm. 2017 rainfall total is above my long term average.
    • The driest September is 2006 with 5mm, the wettest is 2000 with 101mm.
September 2017 Summary
Temperature
Mean 10.8 C
Mean Maximum 16.3 C
Mean Minimum 6.5 C
Maximum High 25.9 C (25th)
Maximum Low 13.9 C (15th)
Minimum High 8.1 (1st)
Minimum Low 1.0 C (10th)
Wind Speed and Direction
Maximum Gust 54 km/h (18th)
Mean 7.5 km/h
Wind Run 5117 km
Max Daily Windrun 376 km (1st)
Prevailing Direction East North East
Barometer
Maximum 1017.5 hPa (1st)
Minimum 975.2 hPa (10th)
Mean 1001.4 hPa
Max Daily Change +17.2 hPa (18th)
Rainfall
Days with Measured Rainfall
(0.5mm or more)
11
Max Daily Rainfall 27 mm (18th)
Monthly Rainfall 68.5 mm
Humidity
Maximum 100 % (Several days)
Minimum 30 % (9th)

 

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 5.6 8.1 6.7 16.4 48 376 South West 0.5 14.5 1013.0 1017.5 -4.5  
Overcast with showers, more frequent in the evening and a cold southerly wind.
2 4.8 9.7 6.2 13.0 35 297 South West 0.5 3.0 1010.5 1013.2 -2.7  
Overcast with occasional drizzle and light rain at times. Cold southerly wind.
3 2.4 10.9 6.3 6.8 26 155 South West 0.5 4.0 1010.3 1012.7 -2.4  
Overcast with light rain in the morning. Rain clearing in the afternoon with a few sunny intervals. Cold southerlies.
4 3.7 11.6 7.3 4.0 24 91 East Nth East 0 0 1009.8 1012.3 -2.5  
Morning cloud breaking to a sunny afternoon with cool NE winds.
5 7.6 13.6 10.2 10.6 36 242 East Nth East 0 0 997.1 1010.0 -12.9  
Overcast with a few spots of rain around midday. Cool NE winds turning more northerly in the evening with the maximum temperature recorded at 10pm.
6 5.9 17.9 12.4 9.4 50 214 North Nth West 0 0 992.6 997.4 -4.8  
Some cloud and a few spots of rain in the morning breaking to a mostly sunny day with mild northerly winds though cooler later in the afternoon.
7 6.5 17.8 10.9 6.4 34 138 East Nth East 0 0 982.0 992.6 -10.6  
Cloud increasing in the afternoon, winds turning milder northerly from late morning.
8 1.9 17.9 9.0 4.1 32 92 East Nth East 0 0 985.2 992.8 -7.6  
Light morning frost, variable cloud with sunny intervals. Mild in the afternoon with northerly winds.
9 4.8 16.4 8.7 4.3 39 97 East Nth East 0 0 975.4 986.4 -11.0  
Morning cloud breaking to a mostly sunny afternoon with NE winds turning milder northerly in the afternoon
10 1.0 14.5 6.1 5.7 39 130 South Sth West 1.0 10.0 975.2 991.8 +16.6  
Showers from late morning, heavier in the afternoon with cold southerly winds.
11 1.6 13.4 7.0 4.6 36 105 South Sth West 0.5 0.5 992.0 999.9 +7.9  
Showers clearing by dawn, cloud breaking to a sunny morning. Cloud increasing in the afternoon with a few spots of rain. Cool southerly winds.
12 1.5 14.1 7.9 6.9 38 157 South West 0 0 998.8 1003.7 +4.9  
Variable cloud with a few spots of rain from midday, cool southerly winds.
13 4.9 14.7 9.8 5.8 33 133 East Nth East 0.5 0.5 997.3 1003.6 -6.3
Thick fog clearing mid morning then variable cloud with cool NE winds.
14 4.4 22.0 12.3 3.2 22 73 South Sth West 0 0 997.9 1004.3 +6.4
Light mild winds tending southerly during the day with variable high cloud.
15 13.9 25.0 18.6 11.2 45 255 East Nth East 0 0 987.5 1001.0 -13.5  
Variable high cloud, warm north to NE winds.
16 6.6 15.2 11.5 6.0 28 129 East Nth East 0 0 992.6 1004.9 +12.3  
Morning cloud breaking to a sunny day with cool NE winds.
17 6.3 17.1 11.3 6.6 36 150 East Nth East 0 0 992.1 1004.8 -12.7  
Cloudy with a a few spots of rain in the afternoon with NE wind turning northerly.
18 7.9 11.0 9.4 14.2 54 325 South Sth West 1.5 27.0 992.7 1009.9 +17.2  
Rain with heavy falls in the morning, easing early afternoon to showers. Cold southerly winds.
19 8.6 12.4 9.9 9.2 39 210 South Sth West 0.5 1.0 1010.1 1015.4 +5.3  
Showers clearing in the morning but remaining overcast with cool southerly winds.
20 7.5 12.5 9.9 8.5 36 195 East Nth East 0 0 1006.4 1012.7 -6.3  
Morning cloud breaking in the afternoon, cool NE winds.
21 9.8 13.7 10.9 7.4 31 168 East 1.0 4.5 1004.6 1008.5 +3.9  
Overcast with morning showers and a period of rain in the afternoon. East to NE winds dying away in the afternoon.
22 8.6 15.0 11.0 4.9 28 111 East Nth East 0.5 3.0 1008.5 1013.3 +4.8  
Mostly cloudy with morning drizzle and a few spots of rain in the afternoon. NE winds.
23 9.6 20.4 13.3 7.1 28 163 East Nth East 0.5 0.5 1007.2 1011.4 -4.2  
High cloud breaking to a sunny and mild day with NE winds.
24 5.7 22.7 14.5 3.8 24 82 East Nth East 0 0 1000.2 1009.1 -8.9  
Some high cloud but mostly sunny and mild with light NE winds.
25 11.6 25.9 18.6 8.2 47 188 North Nth West 0 0 992.1 1000.1 -8.0  
Mostly cloudy with some sunny intervals, warm northerly winds gusty in the afternoon.
26 9.6 19.0 14.1 4.4 34 100 East Nth East 0 0 991.9 1002.2 +10.3
Mostly cloudy with NE wiinds turning warmer northerly from late afternoon. Maximum temperature recorded at 6:30pm.
27 8.6 19.1 11.7 7.3 28 169 East Nth East 0 0 1002.6 1016.3 +13.7  
Varaible cloud with a mostly sunny afternoon. Light winds tending southerly in the morning turning NE in the afternoon.
28 8.6 13.7 10.6 12.1 44 277 East Nth East 0 0 1001.6 1016.4 -14.8  
Morning cloud braking to a sunny afternoon, Fresh cool NE wind.
29 7.9 23.8 15.2 6.0 37 136 East Nth East 0 0 995.3 1001.7 -6.4  
Sunny with a some high cloud, mild northerly winds from late morning.
30 9.0 18.6 12.4 6.2 30 143 East Nth East 0 0 994.7 1006.2 -11.5  
Cloudy morning with a few early spots of drizzle and light southerly winds. Wind turning NE in the afternoon with cloud breaking and clearing late afternoon.


September 2017  Temperature Graph
September 2017 Wind Dir Graph
September 2017 Wind Dir Graph
September 2017 Wind Speed Graph
September 2017 Rainfall Graph
September 2017 Barograph
September 2017 Humidity Graph