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Swan Island Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
20.8 21.0 20.4 18.2 15.9 14.0 13.2 13.5 14.6 15.9 17.6 19.3 17.0
Mean Min (°C)
14.8 15.3 14.3 12.8 10.7 9.2 8.4 8.5 9.2 10.1 11.8 13.2 11.5
Mean Rain (mm)
46.8 41.9 57.9 49.7 50.9 55.1 59.1 68.5 62.1 51.9 73.5 51.1 669.9
Median Rain (mm)
27.0 41.2 28.8 38.1 33.6 61.8 56.5 51.8 47.2 50.8 57.3 25.6 619.9
Mean Rain Days
7.1 8.5 8.6 12.5 14.1 17.8 18.2 18.1 14.3 12.5 12.1 9.2 141.2

Swan Island Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
31.9 30.2 29.7 24.2 21.6 18.0 17.6 18.1 20.6 23.0 26.8 28.4 31.9
Low Max (°C)
16.5 14.9 14.2 13.1 12.3 10.1 9.7 9.8 10.5 11.2 12.5 13.1 9.7
High Min (°C)
19.6 19.9 20.2 17.7 16.1 14.7 13.4 12.8 13.7 14.6 16.4 17.8 20.2
Low Min (°C)
8.6 8.7 6.8 6.2 4.3 2.8 3.1 2.2 3.1 3.8 4.6 6.7 2.2
High Rain (mm)
160.8 54.2 121.2 53.6 51.2 32.8 56.2 41.0 28.0 34.8 80.4 62.4 160.8

Swan Island Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
21.9 22.3 22.1 19.0 17.1 14.8 14.0 14.0 15.2 16.3 18.9 20.3 17.3
Low Mn. Max (°C)
19.3 19.8 19.2 16.4 14.4 13.0 12.5 13.1 13.3 14.5 16.7 18.2 16.5
High Mn. Min (°C)
15.6 16.8 15.5 13.8 12.4 10.3 9.3 9.9 10.5 11.2 13.1 14.3 11.9
Low Mn. Min (°C)
13.5 14.2 13.1 10.4 9.0 7.6 7.6 7.2 7.8 8.9 10.7 11.9 10.8
High Rain (mm)
182.0 130.4 183.4 100.4 176.8 96.2 97.2 147.6 100.0 90.6 145.2 118.2 950.8
Low Rain (mm)
6.2 5.0 16.6 28.8 13.0 16.2 14.0 9.2 35.6 9.4 21.0 5.4 306.8

Swan Island Annual Temperatures & Rainfall

SWAN ISLAND

Mean daily minimum temp
Mean daily maximum temp
Highest/lowest on record
Highest/lowest on record
Mean monthly rainfall

Swan Island Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
≥ 35°C
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
≥ 30°C
0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2
≤ 2°C
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
≤ 0°C
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Swan Island 'per Week' Values (14th/86th Percentiles)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
23.1 22.9 22.2 20.1 17.6 15.7 14.3 14.5 15.8 17.7 19.5 21.2 20.7
Low Max
18.5 18.8 18.3 16.2 13.9 12.5 11.9 12.3 13.0 14.1 15.4 17.3 13.3
High Min
16.8 17.4 16.5 15.1 13.7 12.0 10.7 10.7 11.0 12.3 13.8 15.4 15.2
Low Min
12.3 13.0 11.7 10.2 8.1 6.6 6.1 5.8 6.7 7.7 9.7 10.7 7.8

Swan Island Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
12 12 12 12 12 12 12 12 12 12 13 13 12.0
Earliest Entry
2002 2002 2002 2002 2002 2002 2002 2002 2002 2001 2001 2001 2001
Latest Entry
2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013
Years of Maxima
12 12 12 12 12 12 12 12 12 12 13 13 12.1
Earliest Entry
2002 2002 2002 2002 2002 2002 2002 2002 2002 2001 2001 2001 2001
Latest Entry
2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013
Years of Rainfall
11 11 12 12 12 12 12 12 11 11 12 12 11.5
Earliest Entry
2002 2002 2002 2002 2002 2002 2002 2002 2002 2001 2001 2001 2001
Latest Entry
2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013 2013

Station Details

SWAN ISLAND
Northeast, Tasmania
40.7292°S 148.1250°E 15m AMSL
Commenced 2001

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Southwest WA heats up before a soaking

16:39 EST The mercury soared in the nation's southwest today with Perth recording its hottest September day on record, however heavy rain and cooler temperatures will arrive on Sunday.

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