August Summary
Above average temperature, below average wind run and just 9% of expected rainfall.
(August compared to my records from the past 10 years.)
- This August was just above my average temperature of 7.8C with 8.5C.
- The warmest temperature was 22.6C, my highest August temperature in the past 10 years
- The coldest temperature was -2.2C, my lowest August temperature in the past 10 years is 2019 with -3.9C
- Eight days recorded an air frost (0c or below), my average is 6 days.
- The highest number of August air frosts is 2011 with 12.
- Three days failed to reach 10C, my average is 6.
- Ten days reached or exceeded 15C, my average is 7.
- Two days reached or exceeded 20C, my average is 1.
- Wind run was 95% of my average of 3984km with 3801km.
- The barometer recorded below average pressure for the month with 1009.6hPa. My average is 1011.5hPa.
- Rainfall was just 9% of the average expected total of 56mm with 5mm, the driest August in my records
- The wettest August in the past 10 years is 2011 with 63.5mm.
| August 2020 Summary Temperature | |
|---|---|
| Mean | 8.5 C |
| Mean Maximum | 14.0 C |
| Mean Minimum | 3.6 C |
| Maximum High | 22.6 C (31st) |
| Maximum Low | 9.8 C (1st) |
| Minimum High | 10.2 C (8th) |
| Minimum Low | -2.2 C (15th) |
| Wind Speed and Direction | |
| Maximum Gust | 51 km/h (25th) |
| Mean | 5.4 km/h |
| Wind Run | 3801 km |
| Max Daily Windrun | 266 km (19th) |
| Prevailing Direction | East North East |
| Barometer | |
| Maximum | 1034.7 hPa (16th) |
| Minimum | 978.4 hPa (21st) |
| Mean | 1009.6 hPa |
| Max Daily Change | -21.0 hPa (18th) |
| Rainfall | |
| Days with Measured Rainfall (0.2mm or more) |
5 |
| Max Daily Rainfall | 1.6 mm (21st) |
| Monthly Rainfall | 5.0 mm |
| Humidity | |
| Maximum | 99 % (Several Days) |
| Minimum | 33 % (31st) |
| August Daily Observations | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 9.8 | 13.5 | 11.1 | 10.0 | 30 | 229 | East Nth East | 0 | 0 | 1021.7 | 1023.9 | +2.2 |
| Overcast with high cloud, NE wind. | ||||||||||||
| 2 | 9.6 | 16.3 | 11.9 | 5.2 | 21 | 118 | East Nth East | 0 | 0 | 1020.4 | 1023.0 | -2.6 |
| Some sunny intervals in the morning, overcast with high cloud in the afternoon. Light NE winds. | ||||||||||||
| 3 | 5.8 | 14.7 | 9.9 | 3.2 | 15 | 72 | East Nth East | 0 | 0 | 1015.3 | 1021.4 | -6.1 |
| Mostly cloudy but a few sunny intervals in the morning. Light winds tending NE. | ||||||||||||
| 4 | 3.0 | 16.0 | 8.6 | 1.1 | 12 | 24 | East Nth East | 0 | 0 | 1010.8 | 1015.2 | -4.4 |
| Mostly cloudy with light breezes tending NE. Weather records show extraordinary rainfall that led to Northland floods |
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| 5 | 2.4 | 10.4 | 6.6 | 5.4 | 29 | 122 | South West | 0 | 0 | 1014.6 | 1021.4 | +6.8 |
| Overcast with low cloud, a cool southerly wind turning NE in the evening. | ||||||||||||
| 6 | 7.2 | 12.7 | 9.6 | 9.7 | 34 | 224 | East Nth East | 0 | 0 | 1002.3 | 1020.1 | -17.8 |
| Morning low cloud lifting but remaining overcast. Cool NE wind. | ||||||||||||
| 7 | 4.1 | 13.9 | 9.7 | 5.8 | 24 | 131 | South Sth West | 0 | 0 | 997.8 | 1003.0 | +5.2 |
| Sunny with a few clouds, light southerly winds. | ||||||||||||
| 8 | -0.2 | 10.2 | 6.3 | 7.9 | 40 | 183 | South Sth West | 0.4 | 0.8 | 1003.3 | 1010.8 | +7.5 |
| Early showers. Cloud breaking to a sunny afternoon with southerly winds dying away in the evening. | ||||||||||||
| 9 | -0.7 | 15.8 | 5.7 | 1.9 | 15 | 43 | East Nth East | 0 | 0 | 1001.8 | 1008.0 | -6.2 |
| Morning frost. Clear, sunny and mild in the afternoon with light breezes tending NE. | ||||||||||||
| 10 | -0.3 | 17.1 | 7.2 | 1.4 | 21 | 33 | East Nth East | 0 | 0 | 1002.3 | 1008.6 | +6.3 |
| Morning frost. Sunny and mild in the afternoon with light breezes. | ||||||||||||
| 11 | -0.5 | 12.7 | 6.1 | 4.4 | 34 | 100 | East Nth East | 0 | 0 | 1002.8 | 1009.5 | -6.7 |
| 12 | 3.3 | 12.8 | 7.0 | 5.7 | 24 | 129 | East Nth East | 0 | 0 | 1004.7 | 1011.5 | +6.8 |
| Morning fog and mist clearing but remaining mostly cloudy with cool NE winds from midday. | ||||||||||||
| 13 | 2.2 | 12.5 | 7.2 | 3.4 | 30 | 78 | South Sth West | 0 | 0 | 1010.4 | 1012.3 | +12.9 |
| Sunny morning with light breezes, cloud increasing in the afternoon with a few spots of rain and a cold southerly change. | ||||||||||||
| 14 | 0.8 | 10.6 | 5.8 | 1.9 | 19 | 43 | East Nth East | 0 | 0 | 1023.3 | 1030.3 | +7.0 |
| Mostly cloudy and cool. Light NE winds dying away in the evening. | ||||||||||||
| 15 | -2.2 | 11.4 | 3.8 | 2.1 | 21 | 47 | South Sth West | 0 | 0 | 1028.0 | 1032.6 | +4.6 |
| Early morning mist with a frost. Clear and sunny with light southerly winds. | ||||||||||||
| 16 | -1.8 | 11.9 | 4.3 | 1.4 | 14 | 31 | South Sth West | 0 | 0 | 1031.6 | 1034.7 | -3.1 |
| Morning frost, sunny with light breezes tending southerly. | ||||||||||||
| 17 | -2.1 | 10.8 | 4.7 | 3.33 | 22 | 76 | East Nth East | 0 | 0 | 1028.8 | 1032.8 | -4.0 |
| Partly cloudy, cool nor'easterly. | ||||||||||||
| 18 | 4.6 | 11.6 | 10.5 | 10.3 | 40 | 235 | East Nth East | 0 | 0 | 1008.0 | 1029.9 | -21.0 |
| Mostly cloudy with a cool NE wind fresh at times. | ||||||||||||
| 19 | 8.5 | 12.9 | 10.5 | 11.6 | 39 | 266 | East Nth EAst | 0 | 0 | 991.2 | 1007.6 | 16.4 |
| Cloudy with NE wind | ||||||||||||
| 20 | 5.8 | 16.6 | 10.0 | 4.1 | 21 | 94 | South Sth West | 0 | 0 | 979.0 | 991.1 | -12.1 |
| Wet fog clearing to a sunny morning. Cloud increasing in the afternoon with a few spots of rain later. Light winds tending southerly. | ||||||||||||
| 21 | 6.3 | 10.9 | 8.1 | 6.8 | 24 | 155 | South Sth West | 0.2 | 1.6 | 978.4 | 995.3 | +16.9 |
| Cloudy with a period of showers in the afternoon. Cool southerly wind. | ||||||||||||
| 22 | 6.4 | 13.0 | 9.1 | 6.2 | 28 | 143 | East Nth East | 0 | 0 | 995.7 | 1009.0 | +13.3 |
| Morning fog clearing late morning. Sunny for a while, afternoon NE brings broken low cloud. Nelson-Tasman region on track for one of the warmest winters on record |
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| 23 | 9.1 | 12.7 | 10.4 | 6.2 | 29 | 141 | East Nth East | 0.2 | 0.4 | 997.0 | 1009.2 | -12.2 |
| Overcast with light rain and drizzle in the morning. Some sunny intervals in the afternoon, cloud and light rain returning in the evening. | ||||||||||||
| 24 | 8.9 | 15.8 | 11.4 | 5.9 | 25 | 135 | South Sth West | 0.4 | 1.4 | 985.8 | 996.6 | -10.8 |
| Morning showers clearing to a dry afternoon with light winds. | ||||||||||||
| 25 | 4.0 | 12.4 | 8.6 | 11.5 | 51 | 262 | South Sth West | 0.2 | 0.8 | 988.9 | 1005.6 | +16.7 |
| Overcast with occasional showers and a cold southerly wind. | ||||||||||||
| 26 | 0.0 | 12.8 | 6.2 | 2.8 | 19 | 65 | East Nth East | 0 | 0 | 1000.3 | 1007.5 | -7.2 |
| 27 | 2.5 | 12.8 | 7.3 | 4.7 | 26 | 105 | South Sth West | 0 | 0 | 1000.2 | 1012.9 | +12.7 |
| Some cloud in the morning but mostly sunny in the afternoon with light southerly winds. | ||||||||||||
| 28 | 3.3 | 15.6 | 9.4 | 5.1 | 21 | 114 | East Nth East | 0 | 0 | 1005.8 | 1012.3 | -6.7 |
| Sunny morning. high cloud increasing in the afternoon, light NE winds. | ||||||||||||
| 29 | 2.9 | 18.0 | 11.0 | 5.9 | 34 | 134 | East Nth East | 0 | 0 | 1004.7 | 1010.2 | +5.5 |
| Sunny morning. High cloud increasing with NE winds turning nor'west later in the afternoon. | ||||||||||||
| 30 | 5.8 | 22.4 | 14.2 | 5.2 | 39 | 118 | North Nth West | 0 | 0 | 1007.2 | 1010.6 | +3.4 |
| Sunny and warm with nor'west winds from later in the morning. Temperatures top 24C in the South Island, but winter's set to make a comeback |
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| 31 | 2.9 | 22.6 | 12.2 | 6.0 | 35 | 137 | North Nth West | 0 | 0 | 997.0 | 1009.5 | -12.5 |
| High cloud, warm nor'west winds from early afternoon. Pilot captures incredible cloud formation over South Island |
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