December Summary
- December was above my 14 year average temperature with 16.5C, my average is 15.5C. The warmest December is 2010 with 17.4C. No frosts were recorded and no days failed to reach 10C. Twenty five days reached or exceeded 20C, my average is 18, 7 days reached or exceeded 25C equalling my average. No days reached or exceeded 30C.
- Wind run was 76% of average with 4554km, the lowest for any December in the past 14 years. December is normally the windiest month of the year.
- The barometer recorded below average pressure for the month with 1008.6hPa, average is 1011.7.
- It was wetter than average with 119% of expected rainfall.
| December 2013 Summary Temperature | |
|---|---|
| Mean | 16.5 C |
| Mean Maximum | 22.7 C |
| Mean Minimum | 11.9 C |
| Maximum High | 28.7 C (7th) |
| Maximum Low | 18.7 C (7th) |
| Minimum High | 16.8 C (6th) |
| Minimum Low | 5.8 C (1st) |
| Wind Speed and Direction | |
| Maximum Gust | 44 km/h (1st) |
| Mean | 6.5 km/h |
| Wind Run | 4554 km |
| Max Daily Windrun | 208 km (3rd) |
| Prevailing Direction | East Nth East |
| Barometer | |
| Maximum | 1022.9 hPa (3rd) |
| Minimum | 992.1 hPa (30th) |
| Mean | 1008.6 hPa |
| Max Daily Change | +19.0 hPa (24th) |
| Rainfall | |
| Days with Measured Rainfall (Greater than 0.2mm) |
12 |
| Max Daily Rainfall | 19.0 mm (25th) |
| Monthly Rainfall | 70.5 mm |
| Humidity | |
| Maximum | 99 % (Several Days) |
| Minimum | 27 % (7th) |
| 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 | 5.8 | 22.6 | 13.5 | 6.9 | 44 | 153 | South Sth West | 0 | 0 | 1003.3 | 1020.9 | +17.6 |
| Some high cloud, mild northerly winds turning southerly from late morning but remaining dry. Cloud increasing in the evening. | ||||||||||||
| 2 | 9.6 | 24.4 | 15.8 | 6.8 | 25 | 157 | East Nth East | 0 | 0 | 1019.0 | 1022.8 | +3.8 |
| Variable high cloud, NE winds | ||||||||||||
| 3 | 12.7 | 21.3 | 16.5 | 9.1 | 32 | 208 | East Nth East | 0 | 0 | 1015.1 | 1022.9 | -7.8 |
| Few clouds, sunny with NE winds. | ||||||||||||
| 4 | 12.6 | 24.3 | 16.5 | 7.2 | 29 | 161 | East Nth East | 0 | 0 | 1009.8 | 1017.2 | -7.4 |
| Low cloud breaking by mid morning with some high cloud but mostly sunny. Southerly winds turning NE from late morning. | ||||||||||||
| 5 | 11.8 | 25.0 | 17.0 | 7.6 | 27 | 173 | East Nth East | 0 | 0 | 1004.2 | 1010.3 | -6.1 |
| Early low cloud breaking, sunny and warm from late morning. A cooler NE wind from early afternoon. Hazy. | ||||||||||||
| 6 | 14.1 | 28.5 | 21.1 | 6.2 | 32 | 140 | East Nth East | 0 | 0 | 997.0 | 1004.9 | -7.9 |
| Early fog clearing to a warm and sunny day with NE winds | ||||||||||||
| 7 | 18.7 | 28.7 | 22.7 | 8.9 | 42 | 202 | North Nth West | 0 | 0 | 994.2 | 997.2 | -3.0 |
| Variable cloud but mostly sunny with warm nor'west winds easing in the evening. | ||||||||||||
| 8 | 13.1 | 25.9 | 17.7 | 4.9 | 23 | 112 | South Sth West | 5.0 | 13.5 | 995.4 | 1003.8 | +8.4 |
| Sunny and warm in the morning. Cloud increasing late morning with a southerly change. Thunder storms from mid afternoon with rain late afternoon, heavy for a time. | ||||||||||||
| 9 | 11.2 | 22.3 | 16.1 | 6.4 | 29 | 144 | South Sth West | 0 | 0 | 1003.9 | 1011.8 | +7.9 |
| Variable cloud with sunny intervals and southerly winds. Winds turning NE late afternoon with increasing cloud. | ||||||||||||
| 10 | 13.6 | 20.2 | 15.9 | 5.5 | 26 | 127 | East Nth East | 0 | 0 | 1009.6 | 1013.1 | -3.5 |
| Cloudy morning and evening, some sunny intervals in between, NE winds from mid morning. | ||||||||||||
| 11 | 14.5 | 24.4 | 17.7 | 5.1 | 27 | 116 | East Nth East | 0 | 0 | 1006.5 | 1010.8 | -4.3 |
| Morning cloud clearing to a sunny afternoon. Light southerly breezes turning NE from late morning. | ||||||||||||
| 12 | 12.3 | 23.0 | 18.0 | 6.7 | 32 | 154 | East Nth East | 0 | 0 | 1001.9 | 1008.8 | -6.9 |
| Variable cloud but mostly sunny, NE winds. | ||||||||||||
| 13 | 13.1 | 25.7 | 18.0 | 7.2 | 37 | 162 | South West | 0 | 0 | 1005.6 | 1015.4 | +9.8 |
| Cloud breaking in the morning. Southerly winds turning NE from early afternoon then back to southerly in the evening. | ||||||||||||
| 14 | 11.6 | 21.3 | 17.1 | 5.3 | 26 | 119 | East Nth East | 0 | 0 | 1012.0 | 1015.5 | -3.5 |
| Broken cloud clearing in the afternoon to a sunny and mild day with NE winds. | ||||||||||||
| 15 | 11.0 | 24.8 | 17.1 | 5.9 | 24 | 135 | South Sth West | 0 | 0 | 1010.6 | 1015.7 | -5.1 |
| Morning cloud breaking after midday to a mostly sunny afternoon but cloud returning in the evening with a wind change to NE | ||||||||||||
| 16 | 14.9 | 24.5 | 18.1 | 5.3 | 27 | 121 | East Nth East | 0 | 0 | 1006.3 | 1010.5 | -4.2 |
| Mostly cloudy with variable breezes turning southerly from mid morning then back to NE from mid afternoon. Thunderstorms in the area from evening with a light shower. | ||||||||||||
| 17 | 11.3 | 17.5 | 13.8 | 5.5 | 30 | 121 | South Sth West | 1.5 | 7.0 | 1008.4 | 1015.9 | +7.5 |
| Overcast with morning rain clearing in the afternoon. Southerly winds easing to light breezes in the evening tending northerly. | ||||||||||||
| 18 | 10.3 | 21.9 | 16.0 | 6.5 | 30 | 147 | East Nth East | 0 | 0 | 1004.7 | 1015.3 | -10.6 |
| Variable cloud but mostly sunny. Evening thunder storms to the south, light showers in the evening with a cooler southerly change. | ||||||||||||
| 19 | 10.3 | 18.0 | 13.2 | 8.4 | 42 | 187 | South Sth West | 0.5 | 3.5 | 1010.4 | 1019.0 | +8.6 |
| Morning showers clearing by midday and cloud breaking. Southerly winds easing easing in the evening. | ||||||||||||
| 20 | 6.2 | 20.6 | 14.9 | 7.5 | 34 | 172 | East Nth East | 0 | 0 | 1005.9 | 1018.9 | -13.0 |
| Sunny morning, high cloud increasing in the afternoon, NE winds. | ||||||||||||
| 21 | 9.8 | 24.8 | 16.0 | 7.7 | 44 | 169 | South Sth West | 0.5 | 0.5 | 999.3 | 1008.9 | +9.6 |
| Mild northerly breezes turning cooler southerly late morning with showers later in the afternoon. | ||||||||||||
| 22 | 8.1 | 20.5 | 13.3 | 4.1 | 28 | 89 | South Sth West | 0.5 | 2.0 | 1009.1 | 1016.9 | +7.8 |
| Variable cloud with the odd shower, southerly winds turning NE in the evening. | ||||||||||||
| 23 | 10.4 | 22.3 | 16.1 | 6.0 | 24 | 137 | East Nth East | 0 | 0 | 1010.3 | 1016.6 | -6.3 |
| Clear and sunny in the morning, high cloud increasing during the afternoon and becoming overcast, NE winds. | ||||||||||||
| 24 | 14.3 | 26.0 | 18.7 | 8.4 | 36 | 193 | East Nth East | 0.5 | 0.5 | 992.3 | 1011.3 | -18.9 |
| Early showers clearing in the morning but remaining overcast until later in the afternoon with a change to mild northerly winds. Maximum temperature recorded at 6pm. | ||||||||||||
| 25 | 12.4 | 26.7 | 17.3 | 4.4 | 34 | 94 | South Sth West | 2.0 | 19.0 | 993.6 | 1006.0 | +12.4 |
| Mostly sunny and mild morning with light southerly winds turning northerly late morning. Rain with a cooler southerly change from about 3pm. | ||||||||||||
| 26 | 12.0 | 17.5 | 14.1 | 9.0 | 32 | 185 | South Sth West | 0.5 | 7.5 | 1005.9 | 1014.6 | +8.7 |
| Overcast with drizzle and light rain throughout the day, southerly winds. | ||||||||||||
| 27 | 12.9 | 16.8 | 14.6 | 5.4 | 23 | 113 | South Sth West | 0.5 | 3.0 | 1014.3 | 1017.2 | -2.9 |
| Overcast with early drizzle clearing for a time, showers in the afternoon. Variable breezes turning southerly from late morning. | ||||||||||||
| 28 | 13.0 | 19.7 | 15.3 | 7.0 | 26 | 158 | South Sth West | 1.0 | 7.0 | 1010.4 | 1015.3 | -4.9 |
| Overcast with drizzle and light showers throughout the day, southerly winds turning NE from early afternoon. | ||||||||||||
| 29 | 15.8 | 17.9 | 16.6 | 7.6 | 25 | 173 | East Nth East | 1.5 | 6.0 | 1002.2 | 1010.7 | -8.5 |
| Overcast with showers, NE winds. | ||||||||||||
| 30 | 12.1 | 21.1 | 17.3 | 6.2 | 30 | 142 | East Nth East | 0.5 | 1.0 | 992.1 | 1002.0 | -9.9 |
| Mostly overcast but cloud breaking at times, showers morning and afternoon, NE winds | ||||||||||||
| 31 | 7.9 | 24.7 | 16.8 | 3.4 | 32 | 77 | East Nth East | 0 | 0 | 996.5 | 1007.6 | +11.1 |
| Mostly sunny with broken cloud, light northerly winds in the morning increasing from the NE from early afternoon. | ||||||||||||
