Brisbane, Queensland, Australia, Latitude 27°S 23' 52", Longitude 152° E 55' 35", Elevation 76 m
Sun 25 Oct 2020 12:00:02 pm: Temperature: 24.4 °C, Humidity: 89 %, Wind speed: 0 km/h, Wind Gust: 6 km/h, Rain today: 4.0 mm, MSLP: 1009.75 hPa
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At Ferny Grove in August overnight temperatures were above average and was the highest in 6 years with many warm nights during the month. Daytime temperatures were also above average, the lowest in 4 years and very few cool days. Rainfall at Ferny Grove was below average but close to the long term median. Mean relative humidity was near average, mean dew point was near average and mean air pressure was below average. There were 0 thunderstorms (0 thunder days).
Monthly mean daily minimum temperature: 10.1 ºC, 1.2 ºC above average and 0.4 ºC higher than same month in 2019. This is the third highest on record for August and the highest since 10.2 ºC in 2014.
Monthly mean daily maximum temperature: 24.0 ºC, 1.3 ºC above average and 1.3 ºC lower than same month in 2019.
Monthly mean temperature: 17 ºC, 1.2 ºC above average, equal to the same month in 2019. This is the equal second highest on record for August and the highest since the current record high of 20 ºC in 2009.
Lowest temperature: 4.2 ºC on 25 August 2020 at 6:16 AM. Same month in 2019 was 6.2 ºC.
Highest temperature: 27.9 ºC on 19 August 2020 at 1:40 PM. The same month in 2019 was 28.6 ºC.
Lowest daily maximum temperature: 18.6 ºC on 10 August 2020 at 1:06 PM. This is the lowest monthly maximum daily temperature for August since 15.9 ºC in 2014 on 23 August at 12:37 PM. Same month in 2019 was 20.8 ºC.
Highest daily minimum temperature: 16.3 ºC on 15 August 2020 at 6:47 AM. Same month in 2019 was 14.6 ºC.
Minimum temperatures during August saw many warm nights throughout the month with comparatively lesser number of cool or near average temperatures. The 1st was 3 ºC above average, close to average in the following days with some slightly cool nights before temperatures of 5 ºC above average on the 7th and 8th. The 12th to 16th was 2 ºC to 7 ºC above average, which then cooled briefly before temperatures of 2 ºC to 5 ºC above average on the 19th to 21st. A cool period followed on the 25th to 28th which was 1 ºC to 5 ºC below average.
August maximum temperatures saw many days of above average temperatures with very few cool days on two days at the middle of the month and 1 day later in the month. After a few days of close to average temperatures a warm period of 2 ºC to 4 ºC followed on the 4th to 6th. After the 8th was 2 ºC above average, cooler days followed 3 ºC to 4 ºC below average on the following two days. Warmer days followed of 2 ºC to 5 ºC on the 13th to 15th. The 18th to 21st was warm being 2 ºC to 5 ºC above average, with the temperatures close to average following this warmth except for 2 ºC below average on the 23rd, 4 ºC above average on the 28th and 5 ºC above average on the 31st.
Monthly Mean Minimum Grass Temperature: 8 ºC (1 ºC higher than same month in 2019).
Lowest Minimum Grass Temperature: 3.3 ºC on 25 August 2020 (0.7 ºC lower than same month in 2019). This coincided with the lowest minimum air temperature of 4.2 ºC for the month.
Highest Minimum Grass Temperature: 15.7 ºC on 15 August 2020 (3.3 ºC higher than same month in 2019). This coincided with the highest minimum air temperature of 16.3 ºC for the month.
Highest Minimum Grass Temperature Depression: 4.9 ºC on 24 August 2020 with a minimum grass temperature of 6 ºC and an air temperature of 10.9 ºC.
Lowest Minimum Grass Temperature Depression: 0.6 ºC on 15 August 2020 with a minimum grass temperature of 15.7 ºC and an air temperature of 16.3 ºC.
Monthly mean daily minimum MSL pressure: 1014.3 hPa (3.2 hPa lower than same month in 2019). This is the second lowest on record for August and the lowest since the current record low of 1012.8 hPa in 2010.
Monthly mean daily maximum MSL pressure: 1019.3 hPa (3.3 hPa lower than same month in 2019). This is the lowest on record for August since the current record low of 1018.4 hPa in 2010.
Mean MSL pressure: 1016.8 hPa (1.6 hPa below average, 3.2 hPa lower than same month in 2019). This is the second lowest on record for August and the lowest since the current record 1015.6 hPa in 2010.
Lowest MSL pressure: 1002 hPa on 19 August 2020 at 2:56 PM. The same month in 2019 saw 1005.6 hPa. This is the lowest monthly and daily minimum air pressure for August on record exceeding the previous record low of 1005.3 hPa in 2016 on 24 August at 12:25 PM.
Highest MSL pressure: 1029.9 hPa on 29 July 2020 at 9:59 AM. The same month in 2019 saw 1025.8 hPa.
Monthly mean daily minimum relative humidity: 37.8 % (6 % higher than same month in 2019 and 3.9% below average).
Monthly mean daily maximum relative humidity: 86.8 % (2.7 % higher than same month in 2019 and 1 % below average).
Mean relative humidity: 62.3 % (4.3 % higher than same month in 2019 and 2.4 % below average).
Lowest relative humidity: 18 % on 28 August 2020 at 2:29 PM (10% higher than this month in 2019).
Highest relative humidity: 98 % on 14 August 2020 at 3:43 PM (1% lower than this month in 2019).
Monthly mean daily minimum dew point: 5.2 ºC (0.8 ºC below average).
Monthly mean daily maximum dew point: 11.9 ºC (0.2 ºC above average).
Monthly mean dew point: 8.5 ºC (0.3 ºC below average).
Lowest dew point: -3.3 ºC on 23 August 2020 at 4:03 PM.
Highest dew point: 18.7 ºC on 14 August 2020 at 3:36 PM.
Highest wind gust: 48 km/hr on 22 August 2020 at 12:31 PM. This is the fifth lowest August maximum wind gust and the lowest since 44.6 km/hr in 2014 on 23 August at 2:52 PM.
Highest wind speed: 26 km/hr on 16 August 2020 at 2:20 PM (Moderate Force Wind). This is the second lowest monthly maximum wind speed for August on record and the second highest daily wind speed for August.
Total Wind Run: 3149.4 km (195.7 km lower than same month in 2019), 641 km above average and 24.3 % above average. This is the second highest on record for August total wind run and the highest since the current record high of 3345.1 km in 2019.
Mean wind speed: 4.3 km/hr (0.3 km/hr lower than this month in 2019), 0.6 km/hr above the long term average. This is the second highest on record for August and the highest since the current record high of 4.6 km/hr in 2019.
Daily Mean Maximum Wind Gust: 28.7 km/hr (1.3 km/hr higher than this month in 2019), 6.2 km/hr above average and 27.4% above average.
Daily Mean Maximum Wind Speed: 14.9 km/hr, 0.4 km/hr higher than this month in 2019), 5.4 km/hr above average and 56.3 % above average
Dominant Direction: W (E this month last year).
Rainfall total: 14.8 mm, 21.7 mm below average (40.9 % of long term average), 0.9 mm below the long term median and 94.9 % of the site median. This is higher than this month last year which was 11.8 mm and the highest for August since 17 mm in 2017. Automatic rain gauge was 15.6 mm (+6.8 % of manual gauge).
Highest daily rainfall total: 12.2 mm on 8 August 2020. This is the highest August daily rainfall on record since 15.6 mm on 30 August 2015.
Number of rain days: 3 days, 1 less than this month in 2019 and 1.5 days below average.
The year to date total is 851.2 mm (91.4 mm above average and 12 % above average) and compared with previous January to August totals is the highest since 1016.5 mm in 2015.
Highest rainfall rate: 47.2 mm/hr on the 7 August 2020 at 3:02 PM.
Highest hourly rainfall total: 8.4 mm on the 7 August 2020 at 3:11 PM. The
Some light rain with brief heavy falls in the afternoon on the 7th (12.2 mm of rainfall). The 15th saw some light rain at times early in the day. Light showers on the 15th accompanied with gusty winds brought 1.4 mm.
There were 5 days of morning dew.
Smoke haze on the 5th to 7th, 14th and 31st.
Heavy fog in early morning of the 14th with visibility down to 150 metres.
There were many warm nights during the month with the temperature reaching the minimum temperature in the evening or well before sunrise due to persistent wind or cloud cover before the temperature rose or became stable during the rest of the overnight hours.
WSW to NW winds were moderate at times in the afternoon of the 9th, 10th and 22nd.
On the 15th with some rainfall cloud increased before dry and gusty W to NW winds in the evening.
Low humidity in the evening of the 19th, 20th, in the evening of the 23rd and on the 24th.
Much of the month saw high pressure extending cool and stable conditions. Several troughs or fronts passed through which brought some rainfall. Later in the month the troughs brought no rainfall with warm and dry conditions with their passage and further dry air in westerly winds in the wake of the troughs.
Long period rainfall totals remained well below average while deteriorating further. The shorter time spans remained above average. 6 monthly rainfall slipped significantly to 161.7 mm below average being more than 6 months since significant rainfall at the start of the year. 9 monthly rainfall was 79.4 mm above average while 12 to 48-month rainfall was between 72.4 mm below average for 12 month rainfall and 245.3 mm below average for 24 month rainfall.
For August there were 0 existing records exceeded or equalled, along with 8 records that was highest/lowest in at least 5 years.
For more detailed analysis refer to the “Monthly Meteorological Report for August 2020”
Summary of Averages and Extremes for August 2020 for Ferny Grove, Brisbane, Queensland, Australia |
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|
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|
Min Temp |
Max Temp |
Mean Temp |
Temp Range |
Min Grass Temp |
Min Grass Temp Depression |
Min Relative Humidity |
Max Relative Humidity |
Mean Relative Humidity |
Min MSL pressure |
Max MSL Pressure |
Mean MSL Pressure |
Dew Point |
Max Wind Gust |
Max Wind Speed |
Daily rain |
Average |
10.1 |
24.0 |
17.0 |
13.9 |
8.0 |
2.1 |
37.8 |
86.8 |
62.3 |
1014.3 |
1019.3 |
1016.8 |
8.5 |
28.7 |
14.9 |
0.9 |
Min |
4.2 |
18.6 |
13.9 |
8.7 |
3.3 |
0.6 |
18 |
53 |
39 |
1002.0 |
1006.4 |
1004.2 |
-3.3 |
15.0 |
9.0 |
|
Max |
16.3 |
27.9 |
20.7 |
20.8 |
15.7 |
4.9 |
64 |
98 |
81 |
1026.5 |
1029.9 |
1028.2 |
18.7 |
48.0 |
26.0 |
12.2 |
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
14.8 |
Summary for August 2020 from long term average for Ferny Grove, Brisbane, Queensland, Australia |
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|
Temperature |
Relative Humidity |
MSL Pressure |
Dew Point |
Wind Gust |
Wind Speed |
Rainfall |
Rainfall as Fraction of monthly average (%) |
Average |
+1.2 |
-2.4 |
-1.6 |
-0.3 |
+6.2 |
+5.4 |
-21.7 |
40.6 |
Min |
+1.2 |
-3.9 |
|
-0.8 |
|
|
|
|
Max |
+1.3 |
-1.0 |
|
+0.2 |
|
|
-2.2 |
|
Monthly averages and extremes for Year of 2020 to Date for Ferny Grove, Brisbane, Queensland, Australia |
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|
Temperature |
Temperature Anomaly from Long Term Avg. |
Rain total |
Rain Anomaly |
Rain days |
||||||
|
Avg Min |
Avg Max |
Low Min |
High Max |
Average |
Min |
Max |
Average |
|
|
|
Jan-20 |
21.9 |
32.2 |
18.6 |
35.4 |
27.0 |
+1.2 |
+1.5 |
+1.4 |
183.3 |
+38.3 |
15 |
Feb-20 |
21.2 |
30.4 |
19.6 |
37.6 |
25.8 |
+0.9 |
+0.4 |
+0.7 |
389.2 |
+227.4 |
20 |
Mar-20 |
18.7 |
29.1 |
15.1 |
35.2 |
23.9 |
-0.5 |
+0.4 |
-0.0 |
142.4 |
+18.2 |
15 |
Apr-20 |
16.0 |
29.1 |
11.9 |
34.2 |
22.6 |
+0.0 |
+2.7 |
+1.4 |
13.5 |
-80.3 |
9 |
May-20 |
12.7 |
24.2 |
9.1 |
28.1 |
18.4 |
+0.2 |
-0.0 |
+0.6 |
12.1 |
-90.9 |
8 |
Jun-20 |
11.0 |
22.6 |
5.9 |
25.8 |
16.8 |
+0.6 |
+1.2 |
+0.9 |
45.5 |
-16.4 |
13 |
Jul-20 |
10.0 |
22.2 |
5.0 |
26.1 |
16.1 |
+1.1 |
+0.4 |
+1.2 |
50.4 |
+16.9 |
8 |
Aug-20 |
10.1 |
24.0 |
4.2 |
27.9 |
17.0 |
+1.2 |
+1.3 |
+1.2 |
14.8 |
-21.7 |
3 |
YTD |
15.2 |
26.7 |
4.2 |
37.6 |
21.0 |
+0.6 |
+1.0 |
+0.9 |
851.2 |
+91.4 |
91 |
Based on Bureau of Meteorology Climate summaries (Copyright) of which some data was obtained from. From September 2017 the Bureau of Meteorology Climate summaries were expanded to provide data from official stations in and near the Greater Brisbane “Greater capital city Statistical Area” (GCCSA).
Data Copyright Ferny Grove Weather 2020, Produced 4/10/20. Data Checking has been carried out but errors may still be present and therefore there is no assurance of correctness. Corrections may be made at a later data if errors or deficiencies are found and/or improvements in data handling techniques are made, though data with major improvements may not be updated in this summary. Data measured with professional moderate accuracy equipment. This replaced non professional equipment of low accuracy with differences in the measured data. The new equipment measures the daily average wind speed and wind run about 40 % higher. Daily rainfall and grass minimum temperature is measured using non-professional equipment of moderate accuracy.
Site Commencement data is April 15 2009 except for daily rainfall which commenced on January 1 1987. Not all variables have been measured over the entire station record. Most variables are measured over a 24 hour period ending in the evening and over a 24 hour period from midnight effective October 5 2018. Maximum temperatures are measured over the 24 hours from 9 am on the day of measurement. Minimum temperatures are measured over the 24 hours to 9 am of the day of measurement. Rainfall is measured over 24 hours to 9am and recorded on that day. This is the same as the official time standard. Some rainfall measurements are not made at 9am and is adjusted based on the automatic record. Minimum Grass Temperature is measured over an approx. 12 hour period ending in the early morning. MSL refers to Mean Sea Level, which is the standard meteorological method of measuring air pressure reduced to sea level based on both elevation and temperature. Grass Minimum Depression is the difference of the grass minimum temperature from the air temperatures and is a positive value when the grass temperature is below the air temperature.
Up until March 9 2019 automatic records as Dew Point, Average Wind Speed, Dominant Wind Direction, Wind Run, Rain Rate and Hourly Rain are measured over a 24 hour period starting at midnight and recorded for that day. This started on the 6 October 2011. The automatic record is used for some data and also may be used if data is not available/ not suitable. From March 9 2019 the automatic record became the official record instead, simplifying this process. Until replaced on 5 October 2018 the temperature and humidity sensor is under exposed so minimum temperature and maximum humidity are incorrect and low accuracy rain gauge is used which are not used as the site’s official record. This data limitation does not apply to other measurements of temperatures, air pressure and humidity, wind gust, daily and monthly rainfall and rain days elsewhere in this summary which are recorded separately and form the official record for this site. The replacement equipment is sited in more exposed locations and therefore the limitations don’t apply, though the automatic daily rainfall doesn’t form the official data for the site.
Long term averages are based on all available long period past measurements from October 2019 whilst for non automatic rainfall is based on 1987 to 2017 average from the station record, while. Prior to this the long term average for Temperature, Relative Humidity and Air pressure is based on 2009 to 2015 average from the station record and wind speed is based on the 2010 to 2018 average from station record. Wind Run is 2011 to 2018 and Rain Rate and High Hourly Rain is 2011 to 2017.
The Fraction of monthly average expresses how much has fallen in respect to the long term average listed as a percentage. The decile ranking compares the rainfall total to the historical record for the site where the record is divided into 10 equal groups. Decile 1 is the lowest 10% of the record (10th percentile) and Decile 10 (90th percentile) is the highest 10% of the record. Decile 1 is considered “very low”, decile 2 and 3 “low”, decile 4 to 7 “average”, decile 8 and 9 “high” and decile 10 “very high”.