December had 2 notable events, the wettest day of the year, 42mm on the 7th and the hottest day of the year, 33.1C on the 17th.
- Temperature was 1.7 degrees above my average of 15.4C with 17.1C and was the second warmest December I've recorded, the warmest being Dec 2010 with 17.4C. Thirty days reached or exceeded 15C, my average is 29. Twenty three days reached or exceeded 20C, my average is 17, 12 days reached or exceeded 25C, my average is 7, 3 days reached or exceeded 30C where my average is 1. This equals Dec 2007 with 3 days at or over 30C.
- Wind run was lower than average with 5431km, the 3rd least windy December I've recorded. My average is 6070km.
- The barometer was lower than my average pressure of 1012.0hPa with 1010.4hPa. The highest and lowest pressure for the month were close to average.
- Despite having the wettest day of the year, December rainfall was right on average with 60.5mm.
| December 2012 Summary Temperature |
|
|---|---|
| Mean | 17.1 C |
| Mean Maximum | 23.5 C |
| Mean Minimum | 11.9 C |
| Maximum High | 33.1 C (17th) |
| Maximum Low | 15.8 C (25th) |
| Minimum High | 14.5 C (7th) |
| Minimum Low | 3.9 C (1st) |
| Wind Speed and Direction | |
| Maximum Gust | 47 km/h (5th) |
| Mean | 7.7 km/h |
| Wind Run | 5431 km |
| Max Daily Windrun | 294 km (28th) |
| Prevailing Direction | East Nth East |
| Barometer | |
| Maximum | 1027.2 hPa (11th) |
| Minimum | 986.4 hPa (5th) |
| Mean | 1010.4 hPa |
| Max Daily Change | +20.8 hPa (7th) |
| Rainfall | |
| Days with Measured Rainfall (Greater than 0.2mm) |
9 |
| Max Daily Rainfall | 42.0 mm (7th) |
| Monthly Rainfall | 60.5 mm |
| Humidity | |
| Maximum |
98 % (25th) |
| Minimum | 21 % (17th) |
| December 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 | 3.9 | 20.4 | 13.4 | 6.9 | 40 | 158 | East Nth East | 0 | 0 | 1000.2 | 1015.7 | -15.6 |
| Some high cloud in the morning, mostly overcast from afternoon. Fresh NE wind easing from late afternoon. | ||||||||||||
| 2 | 13.8 | 32.2 | 20.3 | 4.2 | 36 | 95 | East Nth East | 0 | 0 | 993.5 | 1000.3 | +6.8 |
| Very warm with light breezes in the morning, north to NE winds in the afternoon. Variable high cloud. | ||||||||||||
| 3 | 10.6 | 18.4 | 14.8 | 9.2 | 43 | 212 | East Nth East | 0 | 0 | 997.2 | 1008.4 | +11.2 |
| Some cloud but mostly sunny with a freshening NE wind in the afternoon. | ||||||||||||
| 4 | 12.1 | 26.0 | 18.0 | 8.0 | 34 | 181 | East Nth East | 0.5 | 0.5 | 994.7 | 1008.1 | -13.4 |
| High cloud increasing in the afternoon, mild with north to NE winds. Evening shower. | ||||||||||||
| 5 | 12.1 | 31.2 | 22.6 | 10.7 | 47 | 244 | East Nth East | 0 | 0 | 986.4 | 997.0 | +10.6 |
| Some cloud but mostly sunny and warm with north to NW winds from late morning. | ||||||||||||
| 6 | 8.0 | 18.4 | 13.5 | 6.2 | 31 | 142 | East Nth East | 0.5 | 0.5 | 988.8 | 1000.2 | -11.4 |
| Overcast for most of the day with showers from late morning. Cloud clearing in the evening. NE winds | ||||||||||||
| 7 | 9.5 | 14.5 | 11.5 | 11.4 | 44 | 260 | South West | 3.0 | 42.0 | 988.8 | 1009.6 | +20.8 |
| Overcast with rain from late morning, heavy at times, easing later in the afternoon. Cold southerly winds. Max temperature recorded at 9:20am, minimum at 3:10pm. | ||||||||||||
| 8 | 9.8 | 22.6 | 14.2 | 7.0 | 33 | 158 | South Sth West | 0.5 | 0.5 | 1009.5 | 1016.5 | +7.0 |
| Morning showers clearing and cloud breaking to a mostly sunny afternoon. Becoming overcast from late afternoon with winds turning from southerly to NE. | ||||||||||||
| 9 | 10.8 | 21.7 | 16.0 | 5.9 | 27 | 136 | East Nth East | 0 | 0 | 1016.0 | 1019.7 | +3.7 |
| Some high cloud but mostly sunny from late morning. NE winds. | ||||||||||||
| 10 | 9.3 | 29.5 | 17.9 | 5.9 | 32 | 120 | East Nth East | 0 | 0 | 1015.7 | 1024.1 | +8.4 |
| Morning cloud clearing to a warm and sunny day with light breezes in the morning tending NE in the afternoon. A cooler southerly change in the evening. | ||||||||||||
| 11 | 11.8 | 17.9 | 14.1 | 4.5 | 24 | 102 | East Nth East | 0 | 0 | 1023.6 | 1027.2 | +3.6 |
| Overcast in the morning with a few spots of drizzle or light rain. Cloud breaking from late afternoon. Light southerly winds in the morning turning NE from midday. | ||||||||||||
| 12 | 11.6 | 20.4 | 14.7 | 5.5 | 27 | 126 | East Nth East | 0 | 0 | 1024.7 | 1027.0 | -2.3 |
| Mostly cloudy but some sunny breaks in the afternoon. Mostly light NE winds. | ||||||||||||
| 13 | 9.5 | 22.6 | 15.8 | 5.5 | 27 | 125 | East Nth East | 0 | 0 | 1019.0 | 1024.5 | -5.5 |
| Mostly sunny and mild but cloud increasing from later in the afternoon. NE winds turning southerly for a time from midday. | ||||||||||||
| 14 | 12.0 | 28.0 | 20.1 | 8.9 | 39 | 202 | East Nth East | 0 | 0 | 1006.1 | 1018.7 | -12.6 |
| Some high cloud but mostly sunny with warm north to NW winds from late morning. A cooler southerly change in the evening. | ||||||||||||
| 15 | 10.9 | 19.1 | 15.3 | 9.7 | 37 | 220 | East Nth East | 0 | 0 | 1015.2 | 1020.9 | +5.7 |
| Morning cloud breaking to a sunny afternoon with fresh NE winds. | ||||||||||||
| 16 | 14.4 | 25.2 | 19.1 | 8.1 | 29 | 162 | East Nth East | 0 | 0 | 1009.2 | 1020.5 | -11.3 |
| Morning cloud clearing to a sunny warm day with NE winds. | ||||||||||||
| 17 | 12.3 | 33.1 | 23.7 | 3.9 | 32 | 88 | North West | 0 | 0 | 1001.4 | 1010.0 | -8.6 |
| Hottest day of the year to date. Sunny and warm with light breezes in the morning tending nor'west from afternoon. Cloud increasing from late afternoon. | ||||||||||||
| 18 | 12.8 | 21.2 | 15.3 | 7.8 | 34 | 180 | South Sth West | 0.5 | 1.5 | 1002.5 | 1009.3 | +6.8 |
| Overcast with morning showers and southerly winds turning NE in the evening. Maximum temp recorded at midnight, minimum at 11am. | ||||||||||||
| 19 | 13.5 | 26.5 | 17.6 | 7.5 | 29 | 173 | East Nth East | 0.5 | 0.5 | 1000.5 | 1018.4 | +17.9 |
| Sunny and mild with southerly winds turning NE from mid afternoon. | ||||||||||||
| 20 | 13.8 | 20.6 | 17.1 | 11.1 | 45 | 255 | East Nth East | 0 | 0 | 1007.8 | 1018.1 | -10.3 |
| Few clouds, fresh NE wind. | ||||||||||||
| 21 | 13.5 | 29.3 | 19.7 | 7.0 | 44 | 161 | East Nth East | 0 | 0 | 1002.5 | 1012.6 | +10.1 |
| Mostly cloudy with light warm north to nor'west winds. A few spots of rain in the afternoon . A cooler southerly change arriving late afternoon but remaining dry. | ||||||||||||
| 22 | 12.4 | 19.7 | 15.6 | 8.0 | 34 | 179 | East Nth East | 0 | 0 | 1012.3 | 1018.8 | +6.5 |
| Cloudy morning, some sunny breaks in the afternoon with NE winds. | ||||||||||||
| 23 | 14.6 | 23.1 | 17.5 | 5.9 | 25 | 132 | East Nth East | 0 | 0 | 1016.9 | 1023.6 | +6.7 |
| Some cloud but mostly sunny from late morning. Mild with NE winds. | ||||||||||||
| 24 | 15.3 | 21.4 | 17.4 | 7.7 | 34 | 176 | East Nth East | 0 | 0 | 1019.1 | 1023.9 | -4.8 |
| Cloudy morning, mostly sunny afternoon. Low cloud from late afternoon. NE winds. | ||||||||||||
| 25 | 15.8 | 22.4 | 18.7 | 11.5 | 40 | 260 | East Nth East | 0.5 | 1.0 | 1004.8 | 1019.5 | -14.7 |
| Morning drizzle clearing and cloud breaking by midday. Humid with fresh NE winds easing in the evening. | ||||||||||||
| 26 | 12.1 | 19.5 | 16.1 | 6.3 | 39 | 144 | South Sth West | 0.5 | 10.0 | 1003.2 | 1017.5 | +14.3 |
| Overcast with drizzle and light showers. Southerly winds dying out late afternoon. | ||||||||||||
| 27 | 10.7 | 18.2 | 14.0 | 6.2 | 30 | 141 | East Nth East | 0.5 | 3.5 | 1017.4 | 1022.8 | +5.4 |
| Morning drizzle clearing and cloud breaking for a time in the afternoon. Southerly winds turning NE from midday. | ||||||||||||
| 28 | 14.0 | 20.4 | 16.2 | 12.9 | 40 | 294 | East Nth East | 0 | 0 | 1014.1 | 1022.5 | -8.4 |
| Mostly overcast with a fresh NE wind. | ||||||||||||
| 29 | 15.4 | 29.7 | 22.1 | 8.2 | 36 | 188 | East Nth East | 0 | 0 | 1000.0 | 1014.2 | -14.2 |
| Variable high cloud, warm north to nor'west winds from late morning. | ||||||||||||
| 30 | 14.4 | 29.9 | 21.7 | 8.4 | 39 | 190 | North Nth East | 0 | 0 | 992.8 | 1000.0 | -7.2 |
| Warm northerly winds the first part of the day. Cloud increasing with a southerly change early afternoon bringing some light showers then wind turning warm northerly again with cloud clearing. | ||||||||||||
| 31 | 8.4 | 25.8 | 17.1 | 9.3 | 43 | 211 | East Nth East | 0 | 0 | 999.8 | 1007.0 | +7.2 |
| Some high cloud, NE winds turning warm nor'west later in the afternoon. | ||||||||||||
