Perth in March 2014: dry start with a wet finish

  • Rainfall: near average for most sites
  • Maximum temperature: near average to above average
  • Minimum temperature: near average to above average
  • Rainfall

    Rainfall in March 2014 was near average for most sites, with monthly totals ranging from less than 5 mm along the coast to about 30 to 50 mm in southeastern suburbs. The highest monthly rainfall total in the Perth metropolitan area for March 2014 was 49.2 mm at Jarrahdale.

    A trough near the west coast produced the first measurable rainfall in the Perth area for March 2014 on the morning of the 13th as a result of isolated showers and thunderstorms, with a handful of sites registering generally less than 1 mm. A stationary trough near the west coast triggered isolated showers and thunderstorms between the 21st and 23rd, with some moderate rainfall recorded in the northwestern and southeastern suburbs. An upper level cloudband brought mainly light rainfall to the Perth area on the 25th, whilst a cold front moved across the Perth region on the 29th bringing light to moderate rainfall, which continued to the end of March due to a westerly flow in the wake of the front.

    Perth Metro recorded 7.4 mm in March on 6 rain days, which is below the average March total rainfall of 19.6 mm. The wettest day for the month at Perth Metro was the 30th when 5.2 mm was recorded.

    For the year so far (January to March), Perth Metro has recorded 7.6 mm of rainfall (0.2mm in January, 0.0 mm February, 7.4 mm March), which is the driest January to March period for 10 years, since the record low of 2.0 mm was recorded from January to March 2004, and the tenth driest January to March period at Perth Metro since records commenced in 1876. Perth Metro has also recorded only 19.6 mm of rainfall for the November 2013 to March 2014 period, which is the lowest November to March rainfall total at Perth Metro for 20 years, since 15.2 mm was recorded in November 1993 to March 1994, and the sixth driest November to March period on record at Perth Metro.

    Perth Metro's long dry spell commenced on 21 October, with only 19.6 mm being recorded since that date on nine rain days (one rain day in November, one in December, one in January, and six in March - most in the second half of the month). Perth Metro recorded no rainfall from 17 January to 12 March 2014, a run of 55 rainless days. The longest dry spell on record at Perth Metro is 83 days from 15 December 1974 to 7 March 1975.

    Maximum temperature

    Mean maximum temperatures in March 2014 were near average on the offshore islands and in coastal and hills locations, and above average for inland coastal plain locations. Mean maxima ranged from the mid-twenties on the offshore islands to the high twenties along the coast and in the hills, grading to low thirties on the inland coastal plain.

    Warm to hot days with daily maxima in the thirties to low forties were reported on the 1st to 7th, 11th and 12th, 19th and 20th, 22nd to 24th, and the 28th. The hottest days for most sites were the 1st or 2nd , with the highest temperature for the month in Perth being 40.1 °C at Pearce RAAF on the 2nd. Mild to cool days with daily maxima in the mid-to-high twenties were observed from the 8th to 10th, 13th to 17th, the 21st, 25th to 27th, and from the 29th to 31st. The lowest maximum temperatures of the month were recorded on the 15th, 30th and 31st, with the lowest maximum in the metropolitan area being 17.9 °C on the 30th at Bickley.

    Perth Metro's mean maximum temperature in March 2014 was 30.3 °C, which is close to the average of 29.6 °C. Daily maxima at Perth Metro in March 2014 ranged from a mild 23.4 °C on the 31st to a very hot 38.0 °C on the 1st.

    Minimum temperature

    Mean minimum temperatures in March 2014 were in the mid-to-high teens across Perth and ranged from near average on the offshore islands and in coastal and hills locations, to above average for coastal plain sites.

    Mild to warm nights with minima in the high teens to low twenties occurred on the 1st, 7th and 8th, 12th and 13th, and from the 22nd to 26th. Gosnells City recorded a minimum of 24.0 °C on the 7th, the highest minimum temperature of March 2014 in Perth. Only a handful of cold nights with minima in the low teens or below 10 °C were recorded, on the 9th, and 15th and 16th. A minimum of 6.9 °C at Jandakot Aerodrome on the 15th was the lowest temperature of the month in Perth.

    Perth Metro's mean daily minimum temperature in March 2014 was 17.7 °C, which is above the long-term average of 16.6 °C, and was Perth Metro's warmest March, for overnight temperatures, since 2011. Daily minima at Perth Metro during March 2014 ranged from a cold 10.3 °C on the 15th to a warm 22.9 °C on the 7th.

    Sunshine & Phenomena

    Perth recorded an average daily sunshine of 9.1 hours in March 2014, which is close to the long term average of 9.6 hours per day.

 

Further information

Media
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Extremes in March 2014
Hottest day 40.1 °C at Pearce RAAF on the 2nd
Warmest days on average 32.1 °C at Pearce RAAF
Coolest days on average 26.5 °C at Rottnest Island
28.5 °C at Karnet
Coldest day 17.9 °C at Bickley on the 30th
Coldest night 6.9 °C at Jandakot Aero on the 15th
Coolest nights on average 15.1 °C at Karnet
Warmest nights on average 19.2 °C at Rottnest Island
18.2 °C at Champion Lakes & Gosnells City
Warmest night 24.0 °C at Gosnells City on the 7th
Warmest on average overall 24.8 °C at Gosnells City
Coolest on average overall 21.9 °C at Bickley & Karnet
Wettest overall 49.2 mm at Jarrahdale
Wettest day 35.6 mm at Jarrahdale on the 23rd
Highest wind gust 80 km/h at Rottnest Island on the 3rd
80 km/h at Pearce RAAF on the 20th




Summary statistics for March 2014
Maximum temperatures
for March
(°C)
Minimum temperatures
for March
(°C)
Rainfall
for March
(millimetres)
Mean for
March
2014
Diff
from
average
Highest for
March
2014
Mean for
March
2014
Diff
from
average
Lowest for
March
2014
Total for
March
2014
Average
for
March
Rank of
March
2014
Fraction of
March
average
Bickley 28.6 +0.5 36.7 2nd 15.2 +0.7 9.2 15th 17.4 25.1 average 69%
Champion Lakes 30.0   38.1 1st 18.2   11.4 15th 14.6
Garden Island HSF 26.6 -0.7 35.2 1st 18.7 +0.5 14.0 15th 14.6 14.6 average 100%
Gosnells City 31.5 +1.0 39.0 2nd 18.2 +1.1 10.8 15th 15.3 16.8 average 91%
Jandakot Aero 29.9 +0.2 37.7 1st 16.5 +1.2 6.9 15th 15.8 16.1 average 98%
Karnet 28.5 +0.7 36.4 2nd 15.1 +1.0 7.5 15th 20.6 24.0 average 86%
Medina Research Centre 30.0 +0.7 39.0 1st 17.1 +1.2 8.0 15th 13.2 19.3 average 68%
Pearce RAAF 32.1 +1.6 40.1 2nd 17.0 +1.0 8.5 15th 6.6 14.9 average 44%
Perth Airport 30.8 +1.1 38.2 1st 17.1 +1.2 8.0 15th 4.6 16.2 low 28%
Perth Metro 30.3 +0.7 38.0 1st 17.7 +1.2 10.3 15th 7.4 19.6 average 38%
Rottnest Island 26.5 +0.4 36.3 1st 19.2 +0.5 16.1 15th 11.8 14.3 average 83%
Swanbourne 29.5 +0.5 38.0 12th 18.0 +0.7 11.0 15th 4.0 21.4 low 19%

Daily maximum temperature
Central Coast (09)12345678910111213141516171819202122232425262728293031
Bickley35.936.732.729.329.532.635.725.124.428.430.335.027.725.223.726.329.030.032.028.224.628.630.132.926.328.928.530.721.817.919.5
Champion Lakes38.138.033.231.731.635.136.726.125.229.232.536.927.825.724.027.029.530.232.730.427.030.532.533.227.530.029.432.523.720.921.8
Garden Island HSF35.232.223.825.429.128.234.723.122.422.930.934.323.421.320.521.622.524.123.631.328.932.333.031.223.224.723.127.824.821.222.5
Gosnells City39.039.033.533.032.636.038.627.826.630.633.738.729.527.025.528.230.931.534.431.528.331.934.435.528.631.832.034.525.521.823.2
Jandakot Aero37.737.430.332.732.135.236.926.125.428.433.637.326.525.323.826.028.129.231.731.727.831.633.333.827.329.128.732.424.921.622.3
Karnet36.236.432.328.628.932.534.824.523.627.729.234.328.224.623.025.428.429.431.027.724.628.930.032.425.527.828.831.021.318.2
Medina Research Centre39.037.029.332.332.636.138.425.824.527.134.038.026.824.023.025.226.728.031.031.728.531.734.334.326.427.727.132.026.022.5
Pearce RAAF39.340.134.533.332.635.940.027.627.131.833.938.630.027.525.829.531.633.935.431.428.232.934.635.830.833.431.134.726.022.923.9
Perth Airport38.237.931.832.532.335.637.926.726.529.333.637.727.826.324.927.129.831.432.431.428.431.734.134.728.631.129.633.924.922.423.4
Perth Metro38.037.530.832.732.035.537.725.725.128.833.637.526.924.824.026.828.530.031.931.628.131.733.934.227.530.628.433.524.923.523.4
Rottnest Island36.334.225.025.725.727.534.823.923.723.926.533.823.021.821.522.722.724.225.228.226.531.032.429.424.325.823.927.425.021.523.0
Swanbourne37.134.727.831.232.533.736.925.925.727.235.538.025.224.523.725.125.827.027.233.029.833.035.032.227.627.826.332.427.023.123.3

This table is very wide; you may have to scroll sideways to see all the days, and you may need to set the paper to 'landscape' to print.
The temperatures in this table are coloured by
their difference from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C difference from average


Daily minimum temperature
Central Coast (09)12345678910111213141516171819202122232425262728293031
Bickley17.619.318.414.313.513.719.417.811.912.413.216.219.912.49.211.614.414.815.815.612.713.616.818.818.818.315.914.617.212.012.2
Champion Lakes21.121.818.517.417.517.222.520.414.714.716.920.222.415.011.414.215.318.119.219.017.117.120.223.222.921.617.918.118.815.414.9
Garden Island HSF19.517.120.917.617.017.722.220.317.216.717.521.021.015.914.016.218.518.919.018.517.519.820.521.221.321.120.118.520.517.216.0
Gosnells City22.520.017.018.018.124.020.714.315.016.521.022.815.010.813.015.218.019.519.017.018.220.522.519.021.317.618.519.215.115.5
Jandakot Aero15.714.716.215.116.817.422.820.311.911.316.520.120.312.06.99.613.115.817.117.717.219.320.222.620.419.715.816.117.216.014.4
Karnet18.616.517.714.013.813.519.714.79.412.513.715.819.112.17.511.914.915.015.415.513.515.817.020.020.618.616.715.215.612.013.2
Medina Research Centre17.514.817.016.017.016.622.820.313.013.416.621.020.613.98.012.014.416.516.717.117.119.520.221.420.220.217.617.618.017.015.1
Pearce RAAF23.915.515.616.417.617.923.820.511.413.415.122.120.715.08.510.711.114.716.317.615.419.921.323.922.820.317.715.916.214.410.6
Perth Airport20.015.815.217.717.317.623.121.012.112.516.919.920.714.38.09.811.916.218.118.816.718.720.422.821.620.216.617.018.216.114.3
Perth Metro16.416.717.417.317.217.122.920.714.313.316.720.221.616.210.313.715.616.117.318.916.218.720.722.321.520.417.818.319.617.315.4
Rottnest Island22.621.420.817.817.418.421.019.918.317.217.620.421.017.016.117.118.619.620.118.918.019.821.022.621.120.820.118.619.717.016.1
Swanbourne21.318.818.515.617.417.522.020.115.114.516.521.421.315.311.013.115.217.317.118.117.119.921.123.320.920.418.018.019.216.715.3

This table is very wide; you may have to scroll sideways to see all the days, and you may need to set the paper to 'landscape' to print.
The temperatures in this table are coloured by
their difference from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C difference from average


Daily rainfall
Central Coast (09)12345678910111213141516171819202122232425262728293031
Bedfordale - - - - - - - - - - - - - - - - - - - - - - 3.6 - 0.4 - - - - 14.4 1.2
Bickley - - - - - - - - - - - - 0.2 - - - - - - - 2.4 0.6 0.2 - 0.2 - - - - 13.6 0.2
Bungendore - - - - - - - - - - - - - - - - - - - - - - 5.2 - 0.2 - - - - 15.0 2.0
Champion Lakes - - - - - - - - - - - - - - - - - - - - 0.4 0.2 0.2 - - - - - - 12.4 1.4
Chidlow - - - - - - - - - - - - - - - - - - - - 2.2 - - - - - - - - »» 5.4
Garden Island HSF - - - - - - - - - - - - - - - - - - - - - - 1.6 - 0.2 0.6 - - - 7.6 4.6
Gidgegannup - - - - - - - - - - - - - - - - - - - - 1.8 0.2 - - - - - - - 5.0 -
Gosnells City - - - - - - - - - - - - 2.0 - - - - - - - 1.2 - - - 0.1 0.2 - - - 10.4 1.4
Jandakot Aero - - - - - - - - - - - - - - - - - - - - - - - - 0.2 - - - - 13.4 2.2
Jarrahdale - - - - - - - - - - - - - - - - 0.2 - - - - - 35.6 - - 0.2 - - - 12.0 1.2
Karnet - - - - - - - - - - - - - - - - - - - - - - 6.2 - 0.2 - - - - 12.0 2.2
Maida Vale - - - - - - - - - - - - - - - - - - - - - - - - 0.2 - - - - 6.8 0.4
Medina Research Centre - - - - - - - - - - - - - - - - - - - - - - 2.0 - 1.6 0.4 - - - 7.8 1.4
Midland - - - - - - - - - - - - - - - - - - - - 3.2 - - - - - - - - - 4.2
Mount Helena



















2.0







5.8 -
Noble Falls



















6.4







4.0 0.2
Pearce RAAF - - - - - - - - - - - - - - - - - - - - 2.8 - - - - - - - - 3.8 -
Perth Airport - - - - - - - - - - - - - 0.2 - - - - - - - 0.2 - - 0.2 0.2 - - - 3.8 -
Perth Metro - - - - - - - - - - - - 0.2 - - - - - - - 1.0 - - - 0.2 0.4 - - - 5.2 0.4
Pickering Brook











0.2






0.2
3.6
0.4



10.4 0.8
Roleystone - - - - - - - - - - - - - - - - - - - - 0.2 0.4 3.0 - 0.4 - - - - 18.6 1.6
Rottnest Island - - - - - - - - - - - - - - - - - - - - - - 0.2 - 1.0 0.6 - - - 5.6 4.4
Serpentine - - - - - - - - - - - - - - - - - - - - - - 14.4 - - - - - - 11.6 2.8
Swan View



















1.4







5.6 -
Swanbourne - - - - - - - - - - - - - - - - - - - - 0.2 - 0.2 - - - - - - 2.8 0.8
Tamala Park (Mindarie) - - - - - - - - - - - - 0.5 - - - - - - - 18.3 - - - 0.1 -




Wanneroo - - - - - - - - - - - - 0.4 - - - - - - - 1.2 - - - 0.8 - - - »» »» 9.0

Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with »» are part of a longer accumulation, which is marked like this on the final day. Values over 100 mm have been rounded to the nearest whole millimetre. Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
This table is very wide; you may have to scroll sideways to see all the days, and you may need to set the paper to 'landscape' to print.


Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Perth using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 9 am on Tuesday 1 April 2014. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, average in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.

Further information

Media
(03) 9669 4057
Enquiries