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.
  • 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
TemperatureWindRainfallBarometer
DateMinMaxMeanMean
(Km/h)
Gust
(Km/h)
Run (km)Prevailing Dir10 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
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
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
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


August 2020  Temperature Graph
August 2020 Wind Dir Graph
August 2020 Wind Dir Graph
August 2020 Wind Speed Graph
August 2020 Rainfall Graph
August 2020 Barograph
August 2020 Humidity Graph