December 2022 Summary

The second warmest December in my records, 52% of expected rainfall, 93% of expected wind run

(December compared to my records from the past 10 years.)

  • December was the second warmest I've recorded with 16.7C. My average temperature for December is 16.4C. The warmest December is 2017 with an average temperature of 18.3C.
    • The coldest temperature was 6.3C, my average December minimum is 5.1C.
    • The highest temperature was 31.4C, my average December maximum is 32.4C.
    • Nineteen days reached or exceeded 20C, my average is 22.
    • Nine days reached or exceeded 25C, my average is 10.
    • Three days reached or exceeded 30C, my average is 3.
  • Wind run was 93% of my average of 5325km with 4833km. This is the second lowest wind run in the past 10 years.
  • The barometer recorded above average pressure for the month with 1013.1hPa. My average is 1010.9hPa.
  • Rainfall was 52% of the average expected total of 55mm with 28.4mm.
    • This is the 3rd driest December in the past 10 years, the driest being 2014 with 26mm.
    • The wettest December on the past 10 years is 2021 with 99.6mm

 

December 2022 Summary
Temperature
Mean 16.7 C
Mean Maximum 22.8 C
Mean Minimum 12.3 C
Maximum High 31.4 C (14th)
Maximum Low 16.7 C (26th)
Minimum High 16.2 C (18th)
Minimum Low 6.3 C (31st)
Wind Speed and Direction
Maximum Gust 52 km/h (8th)
Mean 6.8 km/h
Wind Run 4833 km
Max Daily Windrun 370 km (8th)
Prevailing Direction East North East
Barometer
Maximum 1030.2 hPa (31st)
Minimum 999.6 hPa (1st)
Mean 1013.1 hPa
Max Daily Change +16.0 hPa (30th)
Rainfall
Days with Measured Rainfall
(0.2mm or more)
10
Max Daily Rainfall 9.0 mm (18th)
Monthly Rainfall 28.4 mm
Humidity
Maximum 94 % (19th)
Minimum 27 % (10th)

 

December 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 10.9 23.6 15.2 8.1 33 184 South Sth WEst 0.4 0.8 999.6 1004.1 -4.5
Morning cloud breaking to a sunny day with a southerly wind turning NE from mid afternoon and cloud increasing and a few showers in the evening.
2 9.2 17.8 12.2 4.7 27 106 South Sth West 0.4 4.4 1002.9 1012.4 +9.5
Morning showers clearing and a few sunny spells in the afternoon. Southerly wind.
3 8.8 21.0 13.5 4.3 20 97 South Sth West 0 0 1011.9 1015.0 -3.1
Early light showers. Cloud breaking from late morning to a sunny afternoon, Southerly breezes changing NE from late afternoon.
4 11.4 27.7 18.5 6.8 29 155 East Nth East 0 0 1005.0 1012.7 -7.7
Sunny and warm with mostly light NE wind.
5 9.4 18.8 14.4 7.4 37 170 East Nth East 0 0 1008.8 1014.7 -5.9
Cloudy with a fresh NE wind.
6 10.0 25.0 15.5 7.6 38 175 South Sth West 0 0 1004.7 1016.7 +12.0
Variable cloud with a southerly wind freshening in the afternoon.
7 9.9 17.2 12.8 7.9 33 181 East Nth East 0 0 1015.1 1018.7 -3.6
Cloudy and cool morning, sunny intervals in the afternoon, NE wind.
8 12.2 18.7 15.2 16.1 52 369 East Nth East 0 0 1008.4 1015.0 -6.6
Mostly cloudy with a fresh NE wind.
9 13.8 20.2 16.6 10.2 41 234 East Nth East 0 0 1001.8 1008.7 -6.9
Morning cloud with a a few light showers around midday. Cloud breaking in the afternoon. NE wind.
10 12.5 29.7 20.6 5.2 35 119 East Nth East 0 0 1003.0 1007.5 +4.5
Morning cloud breaking to a sunny and warm afternoon with NE wind turning nor'west.
11 11.7 28.1 17.9 4.2 25 97 East Nth East 0.4 0.8 1006.5 1010.0 +3.5
Warm with light variable breezes in the morning. A cool NE change with increasing cloud and showers later in the afternoon.
12 11.1 26.4 17.1 4.9 28 112 East Nth East 0.2 0.4 1009.8 1017.6 +7.8
Early showers clearing before dawn. Morning cloud breaking to a sunny afternoon. Variable breezes in the morning turning NE in the afternoon
13 13.9 20.6 17.1 11.8 43 269 East Nth East 0 0 1009.7 1018.1 -8.4
Cloud breaking in the afternoon, fresh NE wind.
14 12.4 31.4 20.1 4.3 26 98 East Nth East 0 0 1008.9 1012.6 +3.7
Warm with a light NE wind, cloud increasing later in the afternoon.
15 14.6 22.4 17.3 4.8 22 110 East Nth East 0.2 0.4 1004.7 1012.7 -8.0
Cloudy morning with some light showers around midday. Cloud breaking later in the afternoon. Light NE wind.
16 15.1 30.7 21.5 4.8 23 108 East Nth East 0.2 0.2 1000.6 1004.6 -4.0
Fog lifting but remaining cloudy with showers around midday. Cloud breaking to a warm and sunny afternoon with light breezes.
17 15.1 26.2 18.6 5.8 23 131 West 0 0 1004.1 1009.5 +5.4
Morning cloud breaking with westerly winds turning NE in the afternoon with increasing cloud.
18 12.2 16.2 14.3 6.3 26 142 South Sth West 0.6 9.0 1008.6 1015.3 +6.7
Overcast with light rain and drizzle through the day. Light southerly wind.
19 11.5 18.7 14.3 4.6 29 105 East Nth East 0.2 2.6 1007.8 1015.0 -7.2
Overcast with showers clearing in the afternoon, light winds tending NE.
20 12.8 17.2 13.8 2.9 24 65 East Nth East 0.8 9.0 1009.5 1017.0 +7.5
Overcast with rain and drizzle clearing from mid afternoon, light NE wind.
21 11.8 20.8 15.7 6.0 30 137 East Nth East 0 0 1015.9 1020.4 +4.5
Partly cloudy, NE wind.
22 11.9 19.7 15.7 7.6 28 174 East Nth Easy 0 0 1015.8 1020.2 -4.4
Partly cloudy for most of the day but becoming overcast later in the afternoon. NE wind.
23 13.0 21.6 16.8 6.6 24 151 East Nth East 0 0 1011.4 1015.9 -4.5
Cloud increasing from late morning, NE wind.
24 14.7 23.8 18.5 5.8 28 133 East Nth East 0 0 1011.3 1013.6 +2.3
Cloud morning and later in the afternoon, otherwise sunny with a NE wind.
25 15.6 23.5 19.0 10.0 34 227 East Nth East 0 0 1012.6 1018.6 +6.0
Some cloud in the morning and later in the afternoon but a mostly sunny and mild Christmas day with a NE wind.
26 16.7 23.2 19.1 8.1 28 185 East Nth East 0 0 1018.6 1023.7 +5.1
Variable cloud, NE wind.
Holidays off to a warm one as high pressure brings higher than average temperatures to the South Island
27 14.7 19.0 16.4 4.8 29 110 South Sth West 0.2 0.6 1023.7 1028.4 +4.7
Overcast with some light showers at times. Southerly wind.
28 12.2 22.3 17.7 8.7 44 198 East Nth East 0 0 1021.4 1028.6 -7.2
Some cloud but mostly sunny with a fresh NE wind in the afternoon.
29 15.7 30.4 23.0 7.8 35 177 East Nth East 0 0 1011.6 1021.2 -9.6
Sunny and warm with a NE wind.
Parts of Canterbury surpass 34C on scorcher day, but wind keeps Christchurch city cooler
30 10.0 19.5 15.7 8.8 44 202 South Sth West 0 0 1013.7 1029.7 +16.0
Overcast with some drizzle or light showers and a southerly wind.
From baking hot to beanies: Canterbury's temperatures plummet 24 hours later
31 6.3 24.6 14.9 4.3 28 97 East Nth East 0 0 1027.0 1030.2 +3.2
Sunny with a few clouds, NE wind.

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December 2022  Temperature Graph
December 2022 Wind Dir Graph
December 2022 Wind Dir Graph
December 2022 Wind Speed Graph
December 2022 Rainfall Graph
December 2022 Barograph
December 2022 Humidity Graph