A typical July from my records:

  • An average temperature of 6.7C.
  • Maximum temperature expected about 18C.
  • Minimum temperature expected about -3C.
  • Eight frosts are expected in an average July
  • Ten days fail to reach 10C
  • Five days are expected to reach or exceed 15C.
  • No days are expected to reach or exceed 20C.
  • Wind run would be around 3400km with the windiest day expected to have a wind run of 330km.
  • Maximum wind gust would be in the region of 60km/h.
  • There would be rain on 12 days with the monthly total of around 60mm.

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

July 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 1.5 10.1 7.0 4.0 27 92 East Nth East 0 0 1038.0 1040.3 +2.3
Some cloud but mostly sunny with a cool NE wind.
2 1.4 11.0 6.3 3.5 24 80 East Nth East 0 0 1038.6 1040.7 +2.1
Mostly cloudy with some sunny intervals. Cool NE wind from mid morning.
Climate change: Scientists defining NZ's new 'normal'
3 -0.7 9.9 3.5 2.2 22 49 East Nth East 0.2 0.2 1037.2 1040.5 -3.3
Morning frost. Sunny with some cloud in the afternoon with a light NE wind.
4 -3.4 8.8 3.4 3.8 21 86 East Nth East 0.2 0.2 1032.4 1040.6 -8.2
First good frost of the winter. Sunny with NE winds in the afternoon.
5 6.3 14.4 8.8 5.7 30 130 East Nth East 0 0 1018.7 1032.2 -13.5
Cloudy with light NE winds.
Niwa confirms NZ's warmest June, with more mild days ahead
6 8.9 17.6 13.4 11.0 64 252 East Nth East 0 0 990.5 1018.3 -27.8
Mostly cloudy and mild with north to NE winds
7 3.3 11.7 7.2 7.6 56 180 South West 0.4 1.2 986.9 1008.3 +21.4
Overcast with light showers and west to SW winds. Maximum temperature recorded at 12:10am
8 -1.3 9.2 3.5 2.5 34 58 South Sth West 0.2 0.2 1004.2 1007.3 +3.1
Morning frost then sunny with a cool southerly wind in the afternoon dying away by evening.
9 -2.3 9.9 3.5 3.9 44 88 South Sth West 0 0 999.9 1007.2 -7.3
Morning frost. Sunny with virtually no wind. A southerly change blowing through in the evening.
10 -0.6 9.4 5.3 8.3 48 190 South Sth West 0 0 1007.3 1014.3 +7.4
Sunny with light southerly breezes. Southerly winds increasing in the evening.
11                        
 
12 -4.2 8.5 1.6 2.8 21 63 East Nth East 0 0 1013.0 1020.0 -7.0
Hard frost, sunny with light NE winds from midday.
13 -1.9 9.5 2.2 2.1 15 46 West 0 0 1014.3 1016.5 -2.2
Frost. Sunny with light winds tending westerly.
14 -2.6 11.1 4.2 3.8 25 85 East Nth East 0 0 1006.7 1015.9 -9.2
Sunny with some high cloud during the day, light NE wind.
15 4.4 12.8 9.0 5.5 29 123 East Nth East 0 0 1006.0 1012.6 +6.6
Cloudy with northerly winds in the morning turning briefly southerly then NE from midday.
16 8.1 17.3 11.5 7.0 30 159 East Nth East 0.2 0.2 990.3 1009.0 -18.7
Early light shower clearing before dawn. Overcast but milder then recently with a NE wind.
17 8.8 17.0 11.4 5.6 29 127 East Nth East 0.4 2.6 970.7 989.9 -19.2
Mostly cloudy but some sunny intervals with showers morning and from later in the afternoon.
Hundreds spend night in evacuation centres as heavy rain hits parts of NZ
18 6.3 11.6 8.8 6.8 31 154 South Sth West 0.2 0.8 975.0 991.6 +16.6
Cloudy with some sunny intervals in the afternoon, cool southerly winds.
19 5.5 9.1 7.7 7.6 26 173 South West 0.4 2.6 991.7 1005.0 +13.3
Cloudy with cool a southerly wind and drizzle at times.
Warmer weather 'loading the dice' towards more intense rainfall, scientists say
20 -0.6 9.4 5.6 4.8 26 111 East Nth East 0.2 0.2 1004.1 1008.2 -4.1
Morning fog clearing to a sunny morning. Cloud returning around midday with a cool NE wind.
Stopbanks won't save us: Scientists critical of lack of long-term flooding planning
21 5.6 13.2 9.2 5.1 24 115 East Nth East 0 0 991.7 1003.9 -12.2
Cloud increasing from morning to a mostly overcast day. NE wind.
22 6.4 9.6 7.7 8.3 39 189 South West 0.4 2.6 988.9 1009.8 +20.9
Overcast with showers from mid morning. Southerly wind. Maximum temperature recorded at midnight.
23 0.4 10.1 6.2 4.0 23 90 East Nth East 0.2 0.2 1010.0 1021.6 +11.6
Sunny with a cool NE wind.
24 0.5 11.0 6.7 6.0 32 137 East Nth East 0 0 1020.1 1025.5 -5.4
Sunny with a cool NE wind later in the morning, cloud increasing later in the afternoon.
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