January Summary

Near average temperature, below average wind run and record low rainfall.

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

  • This January is near my average temperature of 17.4C with 17.3C. My January record is 19.5C in 2018.
    • The warmest temperature was 33.2C, my January record 37.2C in 2009.
    • The coldest temperature was 6.3C, the lowest January temperature I've recorded in the past 10 years is 3.9C in 2017.
    • Twenty six days reached or exceeded 20C, my average is 24 days.
    • Twelve days reached or exceeded 25C, my average is 12 days.
    • Four days reached or exceeded 30C, my average is 5 days.
  • Wind run was 94% of my average of 5450km with 5139km.
  • The barometer recorded above average pressure for the month with 1012.2hPa. My average is 1010.3hPa.
  • Rainfall was the lowest I've ever recorded for January, just 7% of the average expected total of 54mm. The previous dry January was 2015 with 12mm
    • The wettest January in the past 10 years and in my 20 years of records is 2018 with 104mm.
January 2020 Summary
Temperature
Mean 17.3 C
Mean Maximum 24.4 C
Mean Minimum 12.2 C
Maximum High 11.2 C (1st)
Maximum Low 15.9 C (29th)
Minimum High 18.5 C (7th)
Minimum Low 6.3 C (15th)
Wind Speed and Direction
Maximum Gust 53 km/h (7th)
Mean 7.3 km/h
Wind Run 5139 km
Max Daily Windrun 299 km (7th)
Prevailing Direction East North East
Barometer
Maximum 1028.5 hPa (14th)
Minimum 989.3 hPa (5th)
Mean 1012.2 hPa
Max Daily Change -19.6 hPa (5th)
Rainfall
Days with Measured Rainfall
(0.2mm or more)
5
Max Daily Rainfall 2.8 mm (3rd)
Monthly Rainfall 4.0 mm
Humidity
Maximum 94 % (27th)
Minimum 27 % (11th)

 

January 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 13.7 33.2 20.7 4.9 33 109 East Nth /east 0 0 1008.3 1014.6 +6.3
Overcast with thick smoke from the Australian bush files obscuring the sun. Warm with hardly any wind for much of the day. A southwesterly change in the evening.
Christchurch the hottest spot in the country on New Year's Day
2 13.8 24.4 17.7 5.3 24 120 East Nth East 0 0 1001.9 1012.9 -11.0
Overcast with smoke haze in the morning. Sunny intervals in the afternoon. NE winds turning southerly in the evening.
'Just one more horror': Iconic South Island glaciers stained by Aussie bushfires
3 9.8 20.6 14.1 4.3 24 97 South Sth West 0.4 2.8 1000.3 1003.5 -3.2
Cloudy with rain from evening with light winds tending southerly.
4 8.3 18.7 13.3 6.5 33 148 South Sth West 0.2 0.2 1000.8 1009.6 +8.8
Early showers clearing before dawn. Variable cloud, southerly winds.
5 7.6 29.0 16.2 7.0 34 160 East Nth East 0 0 989.3 1008.9 -19.6
Cool and cloudy on the morning. Cloud breaking and wind turning warm northerly in the afternoon. Cooler southerly change in the evening.
6 10.5 25.8 16.0 6.2 33 140 South Sth West 0.2 0.6 990.8 999.5 +8.7
Cloud increasing in the afternoon with a few spots of rain. A period of rain in the evening. Variable winds tending southerly in the afternoon.
7 10.2 18.5 14.1 13.1 53 299 South Sth West 0.2 0.2 999.7 1015.0 +15.3
Any showers clearing before dawn. Variable cloud with a fresh cool southerly wind.
Soil moisture lower than normal nationwide, increasing fire risk
8 9.8 20.7 14.0 3.9 27 88 East Nth East 0 0 1014.5 1017.2 -2.7
Morning cloud breaking to a mostly sunny afternoon with light southerly winds turning NE.
Why summer's about to get warmer - and maybe wilder
9 11.2 28.3 17.2 4.7 29 106 East Nth East 0 0 1012.2 1017.1 +4.9
A mostly sunny day with NE winds, cloud increasing later in the afternoon with light variable winds.
'This trend is not our friend' - 2019 NZ's fourth hottest year
'A feast of information': Why weather maps are like works of art
10 10.7 19.8 15.4 6.5 34 148 East Nth East 0 0 1017.0 1019.2 +2.2
Variable high cloud, NE wind.
11 14.6 29.6 19.1 9.9 44 227 East Nth East 0 0 1003.0 1017.8 -14.8
High cloud increasing in the afternoon with a gusty nor'west change.
12 14.2 32.9 24.0 10.3 40 236 North Nth East 0 0 1001.0 1010.1 +9.1
Sunny and very warm with northerly winds. An evening change to a cool southerly.
13 12.0 19.8 15.1 6.8 30 156 East Nth East 0 0 1010.2 1027.5 +17.3
Cloud increasing around midday with a light shower early afternoon. NE wind.
14 7.2 21.1 14.3 5.4 31 122 East Nth East 0 0 1024.8 1028.5 -3.7
Some cloud, sunny with NE wind.
15 6.3 23.3 14.2 3.5 24 79 East Nth East 0 0 1025.4 1027.0 +1.6
Sunny, few clouds, light winds tending NE in the afternoon.
16 7.3 19.2 14.1 7.9 42 180 East Nth East 0 0 1023.3 1026.7 -3.4
Sunny with a few clouds, NE winds freshening in the afternoon.
17 13.3 20.6 16.0 11.5 40 263 East Ntn East 0 0 1020.7 1024.0 -3.3
Morning cloud breaking to a sunny afternoon with freshening NE winds.
18 13.2 20.3 16.2 10.8 36 246 East Nth East 0 0 1018.6 1022.4 -3.8
Few clouds at times, sunny with a freshening NE wind in the afternoon.
19 9.8 21.6 16.0 6.0 29 136 East Nth East 0 0 1017.4 1020.6 -3.2
Morning cloud breaking to a sunny day. Thin high cloud in the afternoon.
20 13.6 23.0 17.3 5.0 29 113 East Nth East 0 0 1015.4 1019.4 -4.0
Morning cloud with a few spots of drizzle. Cloud breaking to a sunny afternoon with NE wind. Cloud returning in the evening
21 13.9 22.7 18.2 6.9 36 157 East Nth East 0 0 1013.5 1017.2 -3.7
Morning cloud breaking to a sunny afternoon with a NE wind.
22 15.6 23.8 18.9 6.1 25 139 East Nth East 0 0 1008.2 1014.0 -5.8
morning cloud breaking to a sunny afternoon with a mostly light NE wind.
NZ in for 'absolute scorcher' and dry trend continues
23 12.9 26.8 18.3 6.9 40 158 South Sth West 0 0 1009.4 1017.8 +8.4
Maximum temperature recorded at 10:30am before a fresh southerly change with increasing cloud but remaining dry.
24 13.9 22.7 18.0 9.0 36 205 East Nth East 0 0 1011.7 1017.7 -6.0
Clouds morning and evening buy otherwise sunny with a fresh NE wind in the afternoon.
25 15.7 29.5 20.3 9.4 34 215 East Nth East 0 0 101.5 1017.8 +7.3
Morning low cloud lifting but remaining overcast with high cloud and light NE winds. A southerly change late afternoon peaking the temperature and humidity on its arrival at 5:50pm.
26 15.6 28.3 19.2 8.3 31 189 East Nth East 0 0 1013.6 1018.6 -5.0
Low morning cloud clearing to a sunny day with NE wind in the afternoon.
27 15.5 30.5 20.9 3.8 27 87 East Nth East 0 0 1007.7 1013.8 -6.1
Morning mist and low cloud clearing but remaining mostly cloudy with  few sunny intervals. Warm with light breezes tending NE.
Canterbury's spell of dry weather to continue Just 3.8mm of rain recorded making it the driest January in my records if no rain is received this week. The previous dry Jan was 12mm in 2015.
28 15.2 27.2 18.9 9.7 29 221 South Sth West 0 0 1010.2 1014.7 +4.5
Cloudy for much of the day with southerly winds turning NE later in the afternoon.
29 15.9 30.6 21.7 6.8 43 153 East Nth East 0.2 0.2 996.6 1010.2 -13.6
Low cloud with light showers in the morning. Remaining mostly cloudy with sunny intervals and variable winds tending NE. A cooler late evening southerly change but remaining dry.
30 13.1 20.8 17.5 9.5 41 213 East Nth East 0 0 998.9 1009.5 -10.6
Cloud breaking later in the afternoon with fresh NE wind dying away in the evening.
'Severe meteorological drought' hits areas of Northland and Auckland
New Zealand set for a hot weekend with highs in the mid-30s, ferocious northwesterlies for some
31 14.7 23.6 19.8 9.2 45 212 East Nth East 0 0 997.3 1014.3 +17.0
Warm morning with nor'westers changing to cooler southerly then NE in the afternoon. Hazy with some high cloud.


January 2020  Temperature Graph
January 2020 Wind Dir Graph
January 2020 Wind Dir Graph
January 2020 Wind Speed Graph
January 2020 Rainfall Graph
January 2020 Barograph
January 2020 Humidity Graph