Overnight temperatures in August at Ferny Grove were above average and daytime temperatures were well above average. Ferny Grove rainfall was below average but close to the long term median. Mean relative humidity was below average and mean air pressure was above average. There were no thunderstorms (1 thunder day).
Mean minimum temperature: 9.7 ºC, 0.7 ºC above average and 3.6 ºC higher than same month in 2018
Mean maximum temperature: 24.3 ºC, 1.2 ºC above average and 0.2 ºC lower than same month in 2018.
Mean temperature: 17 ºC, 1 ºC above average and 1.7 ºC higher than same month in 2018. This is the second highest on record for August and the highest since the current record high of 20 ºC in 2009.
Lowest temperature: .2 ºC on 13 August 2019 at 6:29 AM. Same month in 2018 was 2 ºC. This is the second highest monthly minimum temperature for August on record, the highest since the record high of 6.5 ºC in 2009 on 1 August.
Highest temperature: 20.8 ºC at 2:12 PM on 11 August 2019. This month in 2018 was 19.5 ºC.
Lowest maximum temperature: 20.8 ºC at 2:12 PM on 11 August 2019. This month in 2018 was 19.5 ºC.
Highest minimum temperature: 14.6 ºC on 28 August 2019 at 4:28 AM. This month in 2018 was 10.6 ºC.
Minimum temperatures in August were generally above average throughout the month with a lower number of average or below average minimum temperatures. The 1st and 2nd was 1 to 2 ºC above average, cooling to 1 to 2 ºC below average on the 3rd to 6th. The 7th was 2 ºC above average, 3 ºC above average on the 8th and 5 ºC above average on the 9th. On the 10th it was 2 ºC above average, cooling to near average on the 11th and 12th. The 13th it was 3 ºC below average and 1 to 2 ºC below average on the 14th and 15th. The 16th was near average, the 17th was 1 ºC below average before rising to 2 ºC above average on the 18th and 19th. The 20th and 21st was 1 ºC below average, rising to 5 ºC above average on the 22nd. The 23rd was 1 ºC above average, falling to 2 ºC below average on the 25th and 26th and near average on the 26th. The 27th was 3 ºC above average, rising to 6 ºC above average on the 28th, 3 ºC above average on the 29th, near average on the 30th and 2 ºC above average on the 31st.
Maximum temperatures in August were above average on most days with very few cool or near average temperatures. The 1st and 2nd was 1 to 2 ºC below average, warming to 1 ºC above average on the 3rd and 4th. The 5th was near average, 1 ºC above average on the 6th and near average on the 7th. The 8th was 6 ºC above average, 2 ºC above average on the 9th and near average on the 10th. The 11th was 2 ºC below average, 1 ºC below average on the 12th and near average on the 13th. The 14th was 1 ºC below average, 2 ºC above average on 15th and 16th and 5 ºC above average on the 17th. The 18th cooled to 2 ºC above average, warming to 6 ºC above average on the 19th and easing to near average on the 20th. The 21st and 22nd was 3 ºC above average, 1 ºC above average on the 23rd and 24th. The temperature rose to 2 ºC above average on the 25th, 4 ºC above average on the 26th and 2 ºC above average on the 27th. The 28th was near average, 2 ºC below average on the 29th and 2 ºC above average on the 30th and 31st.
Mean minimum grass temperature: 7.0 ºC (2.1 ºC higher than same month in 2018).
Lowest minimum grass temperature: 4 ºC on 21 August 2019 (3.1 ºC higher than same month in 2018).
Highest minimum grass temperature: 12.4 ºC on 28 August 2019 (3.4 ºC higher than same month in 2018). This coincided with the highest minimum temperature of 14.6 ºC for the month.
Highest Minimum Grass Temperature Depression: 5.3 ºC on 9 August 2019 with a minimum grass temperature of 8.4 ºC and an air temperature of 13.7 ºC.
Lowest Minimum Grass Temperature Depression: 1.8 ºC on 19 August 2019 with a minimum grass temperature of 8.7 ºC and an air temperature of 10.5 ºC.
Mean minimum MSL pressure: 1017.5 hPa (3 hPa higher than same month in 2018). This is the second highest on record for August and the highest since the current record high of 1019.3 hPa in 2014.
Mean maximum MSL pressure: 1022.6 hPa (1.9 hPa higher than same month in 2018).
Mean MSL pressure: 1020 hPa (1.1 hPa above average, 2.4 hPa higher than same month in 2018). This is the second highest on record for August and the highest since the current record high of 1022.1 hPa in 2014.
Lowest MSL pressure: 1005.6 hPa on 10 August 2019 at 2:41 PM. The same month in 2018 saw 1007.8 hPa. This is the second lowest monthly and daily minimum air pressure for August and the lowest since the current record low of 1005.3 hPa in 2016 on 24 August at 12:25 PM.
Highest MSL pressure: 1029.2 hPa on 3 August 2019 at 9:08 AM. The same month in 2018 saw 1026.2 hPa.
Mean minimum relative humidity: 26.8 % (9.2 % lower than same month in 2018 and 25.2 % below average). This is the lowest on record for August exceeding the old record of 33.8 % in 2018.
Mean maximum relative humidity: 79.1 % (4.9 % lower than same month in 2018 and 12.7 % below average). This is lowest on record for August exceeding the previous record low of 83% in 2017.
Mean relative humidity: 53 % (5.9 % lower than same month in 2018 and 19 % below average). This is the lowest on record for August exceeding the previous record of 58.9 % in 2018.
Lowest relative humidity: 3 % on 20 August 2019 at 2:19 PM (14 % lower than this month in 2018). This is the lowest monthly and daily minimum humidity for August on record exceeding the old record of 11 % on 2 August 2014 at 3:14 PM.
Highest relative humidity: 94 % on 8:13 AM on 8 August 2019 at 8:13 AM (4 % lower than this month in 2018). This is the lowest monthly August high humidity on record exceeding the previous record low of 97 % in 2017 on 7 August at 8:20 AM.
Monthly mean minimum dew point: 0.1 ºC (7.7 ºC below average). This is the lowest monthly mean minimum dew point for August on record exceeding the old record of 2.9 ºC in 2018.
Monthly mean maximum dew point: 10.1 ºC (2.1 ºC below average). This is the second lowest monthly mean maximum dewpoint for August and the lowest since the current record low of 8.8 ºC in 2010.
Monthly mean dew point: 5.1 ºC (4.9 ºC below average). This is the lowest monthly mean dew point for August on record exceeding the previous record low of 6.8 ºC in 2018.
Lowest dew point: -24.7 ºC on 20 August 2019 at 2:19 PM. This is the lowest monthly and daily dew point for August on record, exceeding the previous record of -4.8 ºC on 21 August 2018 at 3:41 AM.
Highest dew point: 17.1 ºC on 8 August 2019 at 10:20 AM.
Highest wind gust: 56 km/hr on 9 August 2019 at 7:28 AM. The maximum wind gust this month in 2018 was 79.1 km/hr.
Highest wind speed: 25 km/hr on 22 August 2019 at 11:21 AM (Moderate Force Wind). This is the lowest monthly maximum wind speed for August, exceeding the previous record low of 27.9 km/hr in 2011 on 22 August at 5:13 PM.
Total wind run: 3345.1 km (1985.5 km higher than same month in 2018), 1972.4 km above average and 143.7 % above average. This is the highest on record for August total wind run exceeding the previous record of 1890.6 km in 2014.
Mean wind speed: 4.7 km/hr (3.1 km higher than this month in 2018), 2.9 km/hr above average and 61.1 % above average (approx. 20 % above average accounting for measuring equipment changes). This is the highest on record for August exceeding the previous record high of 2.5 km/hr in 2014.
Daily Mean Maximum Wind Gust: 27.4 km/hr (5.1 km/hr lower than this month in 2018), 1.1 km/hr below average and 3.9 % below average.
Daily Mean Maximum Wind Speed: 14.5 km/hr, 3 km/hr lower than this month last year, 2.3 km/hr below average and 10 % below average. This is the third lowest daily mean maximum wind speed on record for August and the lowest since 13.6 km/hr in 2012.
Dominant Direction: E (SW this month last year).
Rainfall total: 11.8 mm, 23.7 mm below average (33.2 % of long term average), 4.7 mm below the long term median and 72% of the site median. This is lower than this month last year which was 17.1 mm. Automatic rain gauge was 10.6 mm (-10.2 % of manual gauge).
Highest daily rainfall total: 10.5 mm on 8 August 2019.
Number of rain days: 4 days, 1 greater than this month in 2018 and 0.5 days below average.
Highest rain fall rate: 98.4 mm/hr on the 7 August 2019 at 3:40 PM. This is the highest monthly and daily rainfall rate for August exceeding the previous record high of 49.7 mm/hr on 16 August 2014 at 10:40 PM.
Highest hourly rainfall total: 8.6 mm on the 7 August 2019 at 3:57 PM. This is the second highest monthly and daily hourly rain for August maximum hourly rainfall.
There were 0 thunderstorms, with 1 days with thunder, along with 0 nearby thunderstorms.
Rainfall at Ferny Grove mostly occurred on the 7th from showers with some light showers at the start of the month.
There were 12 days of morning dew.
On the 8th was early fog with visibility down to 500 m at 7:30 am clearing at 8am on the 8th and mostly sunny day. On the 9th saw early fog with visibility down to 300 m clearing at 8am.
Dry air and sunny skies featured during the month with several days of dust haze.
For August there were 15 existing records exceeded, along with 1 record that was highest/lowest in at least 5 years.
For more detailed analysis refer to the “Monthly Meteorological Report for August 2019”.
Summary of Averages and Extremes for August 2019 for Ferny Grove, Brisbane, Queensland, Australia |
||||||||||||||||
|
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 |
9.7 |
24.3 |
17.0 |
14.6 |
7.0 |
-2.8 |
26.8 |
79.1 |
53.0 |
1017.5 |
1022.6 |
1020.0 |
5.1 |
27.4 |
14.5 |
1.4 |
Min |
6.2 |
20.8 |
14.6 |
8.3 |
4.0 |
-5.3 |
3 |
38 |
24 |
1005.6 |
1012.1 |
1009.3 |
0.9 |
15.0 |
9.0 |
|
Max |
14.6 |
28.6 |
20.3 |
20.5 |
12.4 |
-1.8 |
48 |
94 |
70 |
1025.8 |
1029.2 |
1027.4 |
17.1 |
56.0 |
25.0 |
10.5 |
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
11.2 |
Summary for August 2019 from long term average for Ferny Grove, Brisbane, Queensland, Australia |
||||||||
|
Temperature |
Relative Humidity |
MSL Pressure |
Dew Point |
Wind Gust |
Wind Speed |
Rainfall |
Rainfall as Fraction of monthly average (%) |
Average |
+1.0 |
-14.0 |
+1.6 |
-4.2 |
-0.6 |
-3.1 |
-24.3 |
31.5 |
Min |
+0.7 |
-17.4 |
|
-6.8 |
|
|
|
|
Max |
+1.2 |
-10.6 |
|
-1.5 |
|
|
-5.4 |
|
Monthly averages and extremes for Year of 2019 to Date for Ferny Grove, Brisbane, Queensland, Australia |
|||||||||||
|
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-19 |
20.8 |
32.0 |
18.5 |
34.3 |
26.4 |
-0.0 |
+1.2 |
+0.6 |
10.4 |
-134.6 |
9 |
Feb-19 |
20.9 |
31.2 |
16.8 |
36.7 |
26.0 |
+0.7 |
+1.1 |
+0.9 |
39.8 |
-122.0 |
13 |
Mar-19 |
20.4 |
31.4 |
14.1 |
41.1 |
25.9 |
+1.7 |
+3.0 |
+2.3 |
236.9 |
+112.7 |
18 |
Apr-19 |
16.4 |
26.7 |
14.1 |
30.5 |
21.6 |
+0.4 |
-0.1 |
+0.1 |
64.9 |
-30.8 |
16 |
May-19 |
13.1 |
24.7 |
4.4 |
28.0 |
18.9 |
+0.7 |
+1.4 |
+1.0 |
41.4 |
-61.6 |
16 |
Jun-19 |
10.9 |
22.5 |
4.4 |
27.7 |
16.7 |
+0.7 |
+1.4 |
+1.0 |
35.9 |
-26.0 |
15 |
Jul-19 |
9.5 |
23.5 |
5.1 |
27.2 |
16.5 |
+0.8 |
+2.4 |
+1.6 |
17.6 |
-15.9 |
10 |
Aug-19 |
9.7 |
24.3 |
6.2 |
28.6 |
17.0 |
+0.7 |
+1.2 |
+1.0 |
11.2 |
-24.3 |
4 |
YTD |
15.2 |
27.0 |
4.4 |
41.1 |
21.1 |
+0.7 |
+1.4 |
+1.1 |
458.1 |
-302.5 |
101 |
Data copyright Ferny Grove Weather 2019, Produced 7/9/2019. 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. Data measured with low accuracy equipment, mostly replaced with professional moderate accuracy equipment from October 5 except for daily rainfall which is measured using non-professional equipment with 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 usually 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 the automatic record became the official record instead, simplifying this process. Until replaced on 5 October 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. 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. Long term average for rainfall is based on 1987 to 2017 average from the station record, while 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.