A typical July from my records;

  • An average temperature of 6.6C.
    • Maximum temperature expected about 18C.
    • Minimum temperature expected about -3C.
    • Eight days are expected to record an air frost (0C or below).
    • Ten days fail to reach 10C maximum daytime temperature.
    • Four days are expected to reach or exceed 15C.
  • Wind run would be around 3200km with the windiest day expected to have a wind run of 300km.
    • Maximum wind gust would be in the region of 50km/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 3.5 6.0 5.0 17.8 56 408 South West 0.6 10.4 1006.6 1011.2 +4.6
Showers with sleet and cold a southerly wind. Maximum temperature recorded at 9:20pm.
Think it's been gloomy recently? The NZ record was set back in 2002
2 0.9 8.5 5.6 10.0 41 228 South Sth West 0.2 0.6 1011.2 1023.2 +12.0
Showers less frequent in the afternoon, with southerly winds dying out.
Christchurch experiences gloomiest month in more than two decades
3 -2.6 9.1 2.8 0.7 11 16 East Nth East 0.2 0.2 1020.3 1023.1 -2.8
Morning frost then sunny, high cloud increasing in the afternoon. Light breezes tending NE.
Despite gloom, June continues 41-month-long warm spell
4 4.5 10.7 8.0 8.0 33 181 East Nth East 0 0 1009.0 1021.1 -12.1
Overcast with some light rain in the morning. Cloud lifting in the afternoon, NE winds.
5 8.7 14.6 11.1 6.3 24 144 East Nth East 0 0 997.9 1008.9 -11.0
Overcast with high cloud and mostly light NE winds. A few spots of rain at night.
6 1.5 10.8 8.6 4.9 28 112 East Nth East 0 0 989.6 997.4 -7.8
Overcast with variable winds tending NE. Cloud breaking in the evening.
7 0.6 10.7 5.2 1.8 25 41 South Sth West 0.4 2.2 988.9 994.2 +5.3
Cloudy with morning rain clearing for a time but returning from late afternoon. Light winds tending southerly.
8 1.7 8.8 5.4 11.1 44 253 South West 0.8 5.2 994.2 1008.7 +14.5
Morning and evening showers, some sunny intervals in between. Cold southerly winds.
9 2.3 8.9 5.6 9.3 37 213 South West 1.2 17.2 1008.5 1020.7 +12.2
Morning rain and cold southerly winds. Rain clearing in the afternoon but remaining cloudy.
More hot days, fewer frosts: how NZ's climate has already changed
10 -1.4 11.1 4.3 1.3 16 29 East Nth East 0 0 1020.6 1023.3 +2.7
Morning frost. Clear and sunny wilt light NE breezes.
11 -1.6 11.8 3.9 1.6 16 37 East Nth East 0 0 1011.0 1020.8 -9.8
Morning frost and cloud. Cloud clearing late morning to a sunny day with light NE breezes.
12 4.0 16.6 9.3 5.7 35 129 East Nth East 0.2 1.4 1005.6 1016.6 +11.0
Mostly cloudy but a few sunny intervals. North to NE winds. A period of rain in the evening.
13 -0.5 9.6 4.4 1.9 29 43 South West 0.2 0.2 1016.9 1027.6 +10.7
Sunny with a few clouds, light southerly winds.
14 -3.1 10.0 1.8 0.7 12 15 East Nth East 0 0 1023.1 1028.3 -5.2
Morning frost, sunny with some high cloud increasing later in the day.
15 -1.1 8.6 4.2 2.3 17 51 South Sth West 0.2 1.0 1025.9 1028.4 -2.5
Overcast with some light showers and light southerly winds.
16 -0.6 7.7 3.8 0.7 20 16 East Nth East 0.2 0.4 1022.8 1027.8 -5.0
Early showers. Morning fog, cloudy with light winds.
17 1.1 9.1 5.5 4.7 29 106 East Nth East 0 0 1021.6 1024.6 -3.0
Morning drizzle. Cloud breaking with a few brighter intervals. Light showers in the evening.
18 5.6 9.2 7.5 1.9 21 42 East Nth East 0.6 7.0 1021.6 1025.4 +3.8
Overcast with misty drizzle. A period of rain in the afternoon. Light breezes.
19 8.5 11.7 9.8 8.6 32 196 East Nth East 0.4 3.0 1017.7 1025.1 -7.4
Overcast with morning showers. Cloud breaking with sunny intervals in the afternoon. NE winds.
20 8.9 13.5 10.6 9.7 31 221 East Nth East 0 0 998.7 1017.4 -18.7
Cloud breaking with some sunny intervals. NE wind.
More big NZ deluges likely with emerging La Nina - Niwa
21 5.0 16.8 10.9 6.2 33 141 East Nth East 0 0 985.1 998.1 -13.0
Some cloud with sunny intervals. Mild in the afternoon. North to NE wind.
22 4.0 9.7 7.2 8.4 37 192 South Sth West 0.2 0.4 986.9 996.9 +10.0
Early showers clearing. Cloud breaking to a sunny afternoon with cold southerly winds turning northerly.
New model gives NZ months' more warning of tropical cyclones
23 -0.3 9.6 4,2 2.2 35 51 South Sth West 0.6 1.6 989.7 1005.8 +16.1
Morning cloud. Showers on the afternoon, some with hail, mostly light winds tending southerly.
24 -3.6 10.0 2.6 1.6 16 36 East 0.2 0.2 1006.1 1021.1 +14.9
Morning frost. Sunny with light breezes. Some late high cloud.
25 -3.7 12.3 2.8 0.9 12 19 East Nth East 0 0 1021.2 1025.1 +3.9
Morning frost then sunny with some thin high cloud. Light breezes tending NE
26 -2.6 13.5 4.6 1.9 19 43 East Nth East 0 0 1025.1 1030.8 +5.7
Morning frost. Sunny with light breezes tending NE.
27 -1.2 11.3 5.4 5.0 27 115 East Nth East 0 0 1030.9 1034.6 +3.7
Morning frost. partly cloudy with a cool NE wind in the afternoon.
28 2.4 8.8 5.7 5.6 24 129 South West 0 0 1031.3 1039.7 +8.4
Mist and low cloud for much of the day with a cold SW wind.
29 4.9 10.5 7.8 7.2 32 160 East Nth East 0 0 1032.5 1040.4 -7.9
Overcast with cool NE wind.
30 8.8 14.6 11.0 8.3 31 189 East Nth East 0 0 1021.9 1032.1 -10.2
Few sunny intervals in the morning, high cloud increasing with a NE wind.
‘The week that snowed’ – shedding new light on old weather records
31 8.2 15.0 10.9 8.4 34 191 East Nth East 0 0 1019.8 1022.1 -2.3
Overcast with high cloud, NE wind.