December 2006 Summary
Temperature
Mean 13.1 C
Mean Maximum 19.0 C
Mean Minimum 8.4 C
Maximum High 30.8 C (12th)
Maximum Low 13.4 C (26th)
Minimum High 10.9 C (31st)
Minimum Low 1.3 C (2nd)
Wind Speed and Direction
Maximum Gust 57 km/h (30th)
Mean 9.4 km/h
Wind Run 6877 km
Max Daily Windrun 490 km (22nd)
Prevailing Direction North East
Barometer
Maximum 1023.8 hPa (9th)
Minimum 992.3 hPa (27th)
Mean 1010.3 hPa
Max Daily Change +16.9 hPa (1st)
Rainfall
Days with Measured Rainfall (Greater than 0.2mm) 14
Max Daily Rainfall 55.4 mm (20th)
Monthly Rainfall 135.8 mm
Humidity
Maximum 96 % (26th)
Minimum 21 % (12th)

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 14.9 8.8 5.9 32 139 South 0.8 2.8 998.9 1015.5 +16.6
Low cloud and showers in the morning. Cloud breaking in the afternoon and clearing in the evening.
2 1.3 15.8 9.7 9.5 40 226 North East 0 0 1008.8 1015.6 -6.8
Sunny for most of the day with cool fresh NE winds in the afternoon. High cloud increasing in the evening.
3 10.8 18.6 13.6 12.2 38 287 North East 0 0 1001.2 1009.2 -8.0
Overcast with high cloud and NE winds, warmer in the afternoon with lighter winds. A southerly change in the evening with low cloud but remaining dry.
4 9.9 18.3 12.5 9.7 33 229 South 0.2 2.2 1004.1 1010.5 +6.4
Overcast with low cloud and cool south west winds. Light rain and drizzle in the morning clearing to a mild and sunny afternoon. Cloud increasing in the evening and becoming cooler with a few spots of rain.
5 7.6 16.5 12.2 6.9 37 163 South 0 0 1010.8 1016.9 +6.1
Variable cloud, mostly sunny in the afternoon. Cool southerly winds.
6 4.5 22.7 13.8 4.9 26 115 North East 0 0 1013.5 1017.2 -3.7
Mostly clear and sunny with some patchy cloud. Southerly breezes in the morning, NE winds in the afternoon. High cloud increasing in the evening.
7 12.2 28.1 16.2 7.5 35 176 North East 0 0 1005.5 1013.3 -7.8
Overcast with high cloud and NE winds in the morning. Cloud breaking in the afternoon with warm temperatures followed by a change to westerly then SW winds.
8 8.6 17.0 12.3 7.5 37 177 South 0.2 0.4 999.9 1006.9 +7.0
Cloudy with a shower in the morning and southerly winds. Cloud breaking in the afternoon then increasing again in the evening with drizzle. Winds turning north to NE in the afternoon and evening.
9 7.3 13.4 10.0 12.6 44 297 South 1.6 11.8 1007.2 1023.8 +16.6
Cold southerly winds with morning showers. Showers clearing and cloud breaking in the afternoon. Wind easing in the evening.
10 5.9 22.2 12.8 4.3 24 101 North East 0.4 0.6 1017.6 1023.8 -6.2
High cloud increasing from morning. Light NE winds.
11 11.5 19.4 14.5 8.3 31 197 North East 0 0 1014.7 1022.6 -7.9
Cloud breaking mid afternoon with NE winds. Hazy with high level smoke from the Australian bush fires.
12 11.4 30.8 19.3 10.8 51 255 North East 0 0 1001.3 1014.7 -13.4
Smoke haze and thin high cloud in the morning clearing by early afternoon. Warm north to nor'west winds in the afternoon. The days maximum temperature equals this years maximum temperature recorded on the 12th Feb and is the warmest December day I've recorded to date.
13 8.8 19.4 13.3 5.4 30 128 North East 1.6 12.4 1007.3 1015.8 +8.5
Early morning rain clearing later in the morning and cloud breaking. Light breezes in the morning, NE winds in the afternoon.
14 8.4 18.3 12.6 5.4 27 127 North East 0 0 1015.9 1020.3 +4.4
Mostly cloudy but some sunny breaks in the afternoon. Light southerly breezes til mid afternoon then light NE winds.
15 11.3 18.0 14.1 12.2 44 288 North East 0 0 1011.1 1020.1 -9.0
Cloud breaking late morning with a mostly sunny afternoon. Fresh NE winds.
16 7.9 23.7 16.3 5.5 32 131 North East 0 0 1000.9 1012.2 -11.3
Cloud with haze in the morning with light NE winds. A few spots of rain mid afternoon then becoming warmer with northerly winds in the evening. A southerly change arriving about midnight.
17 7.9 17.5 13.0 12.2 51 286 South 0.2 0.2 1004.6 1019.9 +15.3
Morning light showers with a gusty cool southerly wind. Wind easing in the afternoon and cloud breaking. Calm in the evening.
18 3.5 17.9 12.0 9.3 41 219 North East 0 0 1015.9 1020.0 -4.1
Some cloud durung the morning clearing by afternoon. Sunny with NE winds, fresh in the afternoon.
19 12.3 20.9 16.4 10.2 36 241 North East 0 0 1003.0 1016.0 -13.0
Clear and sunny after the clearance of morning cloud. Some high cloud in the evening. NE winds.
20 6.8 17.7 12.5 11.5 55 266 South 3.6 55.4 999.2 1009.1 +9.9
Cloudy with southerly breezes and some light rain late morning. Heavy rain from mid afternoon with colder temperatures. Some surface flooding around Christchurch.
21 5.6 12.3 8.5 18.8 54 446 South 1.6 10.8 1009.0 1017.0 +8.0
Strong cold southerly winds with squally showers, some with hail. Showers clearing in the afternoon.
22 6.8 12.7 9.0 20.7 56 490 South 2.0 13.4 1015.9 1018.8 -2.9
Strong cold southerly winds with frequent heavy showrs in the morning. Showers clearing in the afternoon and cloud breaking. Southerly winds increasing from mid afternoon but easing in the evening.
23 6.9 12.4 9.3 11.5 48 273 South 0.6 10.4 1006.0 1015.9 -9.9
Cold southerly winds and showers in the morning. Showers clearing by early afternoon and cloud breaking. Wind easing in the evening.
24 7.3 18.9 13.3 4.6 27 110 North East 0 0 1004.8 1009.0 +4.2
Broken cloud with some morning sun. Cloud increasing from about midday and becoming overcast with a few spots of rain about 1:30pm. NE winds.
25 11.1 20.7 14.6 7.9 42 187 North East 0 0 1008.7 1012.9 +4.2
Morning cloud clearing and sunny for a time. Cloud increasing late afternoon with a cool NE wind picking up. Drizzle and showers in the evening.
26 13.4 22.0 17.6 8.1 31 189 North East 0.2 0.4 1000.2 1009.2 -9.0
Early morning showers, Overcast and mild by day with north east winds tending north to nor'west breezes during the day.
27 12.7 26.3 18.9 5.7 33 136 North East 0.2 0.2 992.3 1000.3 -8.0
Cloudy with light rain in the morning. Cloud clearing and sunny in the afternoon with warm north to nor'west winds.
28 10.3 23.9 15.5 7.4 34 174 North East 0 0 994.3 1004.0 +9.7
Morning cloud clearing to a mostly sunny day. Southerly breezes in the morning, NE winds in the afternoon.
29 8.8 24.0 14.5 6.5 32 153 South 0.2 0.6 1002.0 1006.1 -4.1
Cloud clearing by midday to a sunny afternoon. Thundery buildups to the south east moved over the city about 4pm with some showers and thunder heard. Cloud increasing later in the evening.
30 8.1 12.4 9.9 15.7 57 370 South 2.8 13.4 1005.0 1015.2 +10.2
Strong cold southerly winds with frequent morning showers. Showers clearing in the afternoon and winds easing by evening.
31 7.1 10.9 9.0 12.1 37 287 South 0.2 0.6 1014.9 1018.7 +3.8
Cloudy with cold southerly winds. Showrs around midday. The coldest maximum temperature recorded for any December to date at my station. (Records going back to 2000)

December 2006 Temperature Graph December 2006 Wind Dir Graph December 2006 Wind Speed Graph December 2006 Rainfall Graph December 2006 Barograph December 2006 Humidity Graph