A typical January from my records:

  • An average temperature of 17.5C, January is typically the hottest month of they year
    • Maximum temperature expected about 34C.
    • Minimum temperature expected about 6C.
    • Twenty four days are expected to reach or exceed 20C.
    • Twelve days are expected to reach or exceed 25C.
    • Five days are expected to reach or exceed 30C.
    • No days are expected to reach 35C on average but 5 January days have in the past 10 years. Only 1 January day in the preceding 12 years reached or exceeding 35C in 2009.
  • Wind run would be around 5360km with the windiest day expected to have a wind run of 315km. January is the windiest month of the year.
    • Maximum wind gust would be in the region of 60km/h.
  • There would be rain on 8 days with the monthly total of around 46mm.

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 10.6 29.9 19.0 6.1 35 138 East Nth East 0 0 1009.0 1021.7 +12.7
Sunny and warm in the morning. A cooler NE wind in the afternoon.
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2 15.7 24.6 19.6 9.1 30 209 East Nth East 0 0 1016.8 1021.8 -4.8
Variable cloud with sunny intervals in the afternoon, NE wind.
3 15.1 27.1 20.3 7.7 32 175 South Sth West 0 0 1015.3 1017.4 -2.1
Variable cloud in the morning, a mostly sunny afternoon with a southerly wind.
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4 14.3 27.4 19.5 5.9 28 134 South Sth West 0 0 1012.2 1015.9 -3.7
Some high cloud but mostly sunny with a southerly wind.
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5 15.2 28.7 19.8 7.8 29 178 South Sth West 0 0 1009.8 1013.8 -4.0
Morning cloud clearing to a sunny warm day. Southerly wind turning NE from mid afternoon and southerly again in the evening.
6 11.8 16.9 14.1 10.4 34 238 South Sth West 0.2 0.6 1013.5 1023.3 +9.8
Overcast with morning showers and cool southerly winds. Maximum temperature recorded at 20 past midnight.
7 10.0 21.8 14.1 6.3 30 143 South Sth West 0.2 2.6 1021.6 1024.5 -2.9
Morning showers clearing by late morning and cloud breaking to a sunny and mild afternoon. Southerly wind.
8 7.7 20.5 15.0 7.8 38 178 East Nth East 0 0 1014.1 1023.2 -9.1
Variable cloud, fresh NE wind in the afternoon.
9 11.8 32.8 22.3 4.2 32 96 East Nth East 0 0 1010.3 1014.4 +4.1
Variable winds, warm from late morning, mostly overcast in the afternoon with high cloud.
10 14.4 31.3 20.6 4.9 26 112 East Nth East 0 0 1014.5 1018.2 +3.7
Sunny and warm with a NE wind.
11 14.7 28.1 19.5 8.0 39 183 East Nth East 0 0 1011.9 1017.0 -5.1
Warm and sunny from late morning. Low cloud and cooler temperatures with southerly change in the afternoon.
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12 11.9 23.4 16.5 5.6 31 128 South Sth West 0.6 1.2 1012.0 1020.4 +8.4
Overcast with light southerly wind tuning NE from midday. Showers in the evening with a southerly change.
13 11.9 20.4 14.8 6.7 36 151 South Sth West 0 0 1020.7 1025.9 +5.2
Overcast morning, cloud breaking from midday to a sunny afternoon, southerly wind.
14 11.6 24.6 17.2 3.0 31 69 East Nth East 0 0 1022.4 1025.2 -2.8
Sunny and mild with light winds
15 8.0 21.2 15.4 6.6 32 150 East Nth East 0 0 1019.5 1024.7 -5.2
Morning fog clearing to a sunny day with a few clouds. NE wind.
16 14.4 21.7 17.8 12.2 46 280 East Nth East 0 0 1015.7 1022.3 -6.6
Morning cloud breaking to a sunny day with fresh a NE wind in the afternoon.
17 16.1 23.0 19.0 11.1 34 254 East Nth East 0 0 1011.6 1015.6 -4.0
Some morning cloud, mild and sunny afternoon. NE wind.
18 15.4 22.9 18.6 9.3 34 212 East Nth East 0 0 1008.2 1013.6 -5.4
Morning cloud clearing to a sunny and mild afternoon with a NE wind.
19 13.5 27.9 19.5 10.0 33 217 East Nth East 0.2 0.8 1000.2 1008.5 -8.3
Sunny and warm. A cooler southerly change in the afternoon with showers in the evening.
20 8.8 19,1              6.6      
Weather station off line for most of the day. Morning showers clearing to a mostly sunny afternoon. Southerly winds turning NE in the evening. 6.6mm of rain recorded at the Metservice Airport weather station along with the min and max temperatures recorded there for the day.
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