July Summary
Below average temperature, above average wind run and 85% of expected rainfall but the year is still 175mm below average.
(July compared to my records from the past 10 years.)
- This July was just below my average temperature of 6.6C with 6.3C.
- The warmest temperature was 16.8C, my July record is 21.6C recorded in 2014.
- The coldest temperature was -3.7C, the lowest since 2017.
- Twelve days recorded an air frost (0c or below), my average is 8 days.
- This is the highest number of air frosts since 2011 which also had 12.
- Thirteen days failed to reach 10C, my average is 10.
- Only three days reached or exceeded 15C, my average is 7.
- Have to go back to 2008 to equal that total.
- Wind run was 117% of my average of 3213km with 3763km.
- The barometer recorded above average pressure for the month with 1015.8hPa. My average is 1012.8hPa.
- Rainfall was 85% of the average expected total of 61mm with 51.6m.
- 2016 is the driest July in the past 10 years with 25.5mm
- 2017 is the wettest July in the past 10 years with 167mm.
July 2020 Summary Temperature | |
---|---|
Mean | 6.3 C |
Mean Maximum | 10.9 C |
Mean Minimum | 2.2 C |
Maximum High | 16.8 C (21st) |
Maximum Low | 8.9 C (20th) |
Minimum High | 6.0 C (1st) |
Minimum Low | -3.7 C (25th) |
Wind Speed and Direction | |
Maximum Gust | 56 km/h (1st) |
Mean | 5.3 km/h |
Wind Run | 3763 km |
Max Daily Windrun | 409 km (1st) |
Prevailing Direction | East North East |
Barometer | |
Maximum | 1040.4 hPa (29th) |
Minimum | 985.1 hPa (21st) |
Mean | 1015.8 hPa |
Max Daily Change | -18.7 hPa (20th) |
Rainfall | |
Days with Measured Rainfall (0.2mm or more) |
15 |
Max Daily Rainfall | 17.8 mm (9th) |
Monthly Rainfall | 51.6 mm |
Humidity | |
Maximum | 99 % (Several Days) |
Minimum | 42 % (24th) |
July Daily Observations | ||||||||||||
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Temperature | Wind | Rainfall | Barometer | |||||||||
Date | Min | Max | Mean | Mean (Km/h) | Gust (Km/h) | Run (km) | Prevailing Dir | 10 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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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. |