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 | ||||||||||||
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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 | 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 |
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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 |
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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 |
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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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