January 2023

A typical January from my records:

  • An average temperature of 17.6C.
    • Maximum temperature expected about 34C.
    • Minimum temperature expected about 6C.
    • Twenty five days are expected to reach or exceed 20C.
    • Twelve days reach or exceed 25C.
    • Five days reach or exceeds 30C.
    • No days reach or exceed 35C on average although 6 days have reached or exceeded 35C in the past 14 years.
  • Wind run would be around 5300km with the windiest day expected to have a wind run of 315km.
    • Maximum wind gust would be in the region of 60km/h.
  • There would be rain on 8 days with the monthly total of around 44mm.

Rain totals for the month and year along with temperature and wind comparisons can be found here

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 7.7 21.0 15.1 5.3 33 121 East Nth East 0 0 1028.3 1030.4 -2.1
Sunny with some cloud at times, NE wind
2 11.2 22.0 16.9 9.3 43 209 East Nth East 0 0 1023.4 1026.9 -6.2
Variable cloud, fresh NE wind in the afternoon and evening.
3 15.9 22.2 18.6 12.8 36 292 East Nth East 0 0 1015.8 1023.2 -7.4
Some cloud morning and evening but mostly sunny with a fresh NE wind.
4 17.2 23.1 19.6 12.5 47 287 East Nth East 0 0 1010.5 1016.2 -5.7
Morning cloud breaking but becoming overcast in the afternoon with a few spots of rain. Fresh NE wind.
5 16.8 23.2 19.2 12.3 39 280 East Nth East 0 0 1006.4 1010.6 -4.2
Sunny with variable cloud and a few spots of rain at times. NE wind.
6 17.1 32.9 22.1 6.9 32 158 East Nth East 0.4 0.8 1002.9 1010.1 +7.2
A warm and humid day. Thunder in the afternoon but no rain falling here. A cool southerly change in the evening with showers later.
7 12.8 18.3 15.5 8.6 33 197 South Sth West 0.6 5.0 1010.4 1023.7 +13.3
Overcast with light rain clearing by early afternoon. Southerly wind.
8 11.8 22.8 16.0 4.5 31 103 East Nth East 0 0 1023.4 1025.8 -2.4
Morning cloud clearing to a sunny day with NE wind picking up in the afternoon.
Heavy rain in lower North Island, ferries cancelled due to swells, wind
9 11.0 20.7 16.2 10.9 40 249 East Nth East 0 0 1014.9 1024.3 -9.4
Sunny with some cloud, fresh NE wind.
10 15.3 21.6 17.7 12.5 47 286 East Nth East 0 0 1004.8 1015.0 -10.2
Mostly cloudy but sunny intervals in the afternoon, fresh NE wind.
11 14.1 26.5 18.8 6.3 31 143 East Nth East 0 0 1001.4 1005.7 +4.3
Cloud increasing in the afternoon with a few spots of rain in the evening with light NE winds turning southerly.
12 12.6 20.1 15.4 8.1 33 185 South Sth West 0.4 1.0 1005.9 1019.1 +13.2
Mostly cloudy with showers clearing in the afternoon with some afternoon sunny intervals, southerly wind.
13 10.6 22.7 16.6 3.8 25 87 East Nth East 0 0 1019.1 1024.0 +4.9
Morning cloud breaking to a sunny afternoon with mostly light NE wind
14 8.6 27.2 17.0 3.0 18 68 East Nth East 0 0 1024.0 1029.5 +5.5
Morning cloud breaking to a mostly sunny afternoon with light NE wind in the afternoon.
15 13.0 23.1 18.1 8.7 41 197 East Nth East 0 0 1026.6 1029.5 -2.9
Some morning cloud breaking to a sunny day with a fresh NE wind in the afternoon.
16 15.5 22.7 18.8 10.0 40 229 East Nth East 0 0 1018.0 1026.6 -8.6
Sunny with a fresh NE wind in the afternoon.
17 12.4 21.3 17.1 6.4 32 146 South Sth West 0 0 1016.2 1018.5 +2.3
Overcast with a few spots of drizzle at times, southerly wind.
18 15.0 23.0 18.6 7.2 35 164 East Nth East 0 0 1010.2 1018.2 -8.0
Morning cloud breaking to a sunny day with  NE wind freshening in the afternoon.
One of the wettest areas in New Zealand is running out of water
Southland's endless summer casting a shadow over region's falling water levels
19 16.1 22.9 19.1 13.0 44 297 East Nth East 0 0 1003.3 1011.0 -7.7
Sunny with a fresh NE wind in the afternoon.
20 16.8 29.1 21.6 9.7 43 222 East Ntn East 0 0 995.6 1004.4 +8.8
Sunny and warm with cloud increasing in the afternoon. NE wind turning NW from late afternoon. A cooler southerly change at night.
21 14.7 22.5 17.5 7.4 26 167 South Sth West 0 0 1004.8 1015.0 +10.2
Overcast and mild with light southerly winds turning NE in the afternoon.
22 14.7 24.7 19.3 7.8 31 176 South Sth West 0 0 1011.0 1018.6 +7.6
Some cloud, sunny with NE wind turning southerly from midday.
23 11.6 21.0 15.2 3.9 21 89 West 0.2 0.4 1018.8 1022.9 +4.1
Overcast with early showers and a few spots of rain during the day. Light variable winds.
24 11.8 19.1 14.9 4.2 22 95 East Nth East 0 0 1022.0 1024.6 +2.6
Overcast with some drizzle at times, light NE wind
25 14.1 21.9 18.0 11.5 42 263 East Nth East 0 0 1020.5 1024.4 -3.9
Cloudy with sunny intervals and a fresh NE wind.
26 14.7 30.5 22.3 4.5 28 102 East Nth East 0 0 1013.5 1021.4 -7.9
Sunny and warm with a mostly light NE wind.
27 12.3 34.2 21.2 4.6 34 105 South Sth West 0.8 6.2 1008.6 1018.3 +9.7
Sunny and warm with variable winds tending NE. A cooler afternoon southerly change and a period of rain at night.
In photos: Heavy rain causes flooding, evacuations in Auckland
In pictures: Dramatic images of Auckland’s big flood
28 13.6 19.3 16.1 3.8 20 87 East Nth East 0.2 0.4 1018.5 1024.0 +5.5
Early showers clearing by dawn. Overcast with a light NE wind.
29 11.0 26.4 18.2 5.2 27 116 East Nth East 0 0 1013.2 1023.5 -10.3
Some morning cloud sunny and warm  with a NE wind. Becoming overcast in the evening.
30 16.6 26.4 20.1 6.9 32 156 South Sth West 0 0 1013.1 1021.6 -8.5
Morning cloud breaking to a partly cloudy afternoon. Overcast with low cloud in the evening.
31 16.2 27.6 20.0 5.1 28 117 East Nth East 0 0 1016.3 1021.4 -5.1
Mostly cloudy with a few sunny intervals, NE wind.