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 well below 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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Temperature | Wind | Rainfall | Barometer | |||||||||
Date | Min | Max | Mean | Mean (Km/h) | Gust (Km/h) | Run (km) | Prevailing Dir | 10 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. |