Heron Island Long-term Averages

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Mean Max (°C)	29.8	29.5	28.8	27.0	24.4	22.2	21.5	22.6	24.6	26.4	28.0	29.1	26.2
Mean Min (°C)	24.2	24.2	23.7	22.0	19.8	17.7	16.6	17.3	18.8	20.5	22.2	23.4	20.9
Mean Rain (mm)	105.0	137.2	109.2	111.8	106.7	112.9	79.2	50.2	29.1	40.7	53.8	92.2	1027.2
Median Rain (mm)	64.3	94.0	85.0	83.6	102.4	80.6	68.4	43.4	19.1	27.4	37.8	75.0	979.8
Mean Rain Days	11.3	13.4	13.7	14.5	13.7	11.1	10.2	8.2	6.3	7.1	7.5	9.3	115.7

Heron Island Daily Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max (°C)	33.9	34.0	32.9	31.8	29.3	27.0	25.6	27.8	31.1	30.6	32.2	34.7	34.7
Low Max (°C)	22.8	24.5	23.9	22.2	17.5	17.2	15.6	17.2	18.5	21.0	23.2	23.3	15.6
High Min (°C)	28.4	27.8	27.0	26.4	24.8	22.9	21.2	21.1	22.5	24.0	25.6	27.2	28.4
Low Min (°C)	17.8	17.2	15.6	15.0	12.3	7.2	5.0	5.6	12.8	14.4	17.0	11.1	5.0
High Rain (mm)	191.2	282.4	159.8	167.4	87.1	250.2	165.1	55.7	91.8	81.2	130.6	158.0	282.4

Heron Island Monthly Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Mn. Max (°C)	31.3	32.0	30.3	28.6	26.2	23.7	22.9	23.9	25.7	28.2	29.6	31.6	27.0
Low Mn. Max (°C)	28.2	27.7	26.9	25.4	23.3	20.7	20.3	21.1	23.4	24.9	26.7	27.9	25.4
High Mn. Min (°C)	25.5	25.6	24.8	23.2	21.6	19.5	18.1	18.6	20.1	22.0	23.2	25.4	21.7
Low Mn. Min (°C)	23.0	22.3	22.4	19.7	18.1	14.9	14.4	15.5	17.4	18.7	21.3	21.8	20.0
High Rain (mm)	379.7	513.7	320.1	736.6	312.9	724.0	500.1	149.0	122.4	184.1	176.2	308.7	1727.7
Low Rain (mm)	3.6	6.2	8.6	13.0	26.4	0.0	0.0	0.0	0.0	0.0	8.8	3.7	565.0

Heron Island Annual Temperatures & Rainfall

Heron Island Average Number of Days With Temperatures

	Jan	Feb	Mar	Apr	Oct	Nov	Dec	Ann
≥ 40°C	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
≥ 30°C	15.5	10.8	7.2	0.8	0.2	2.7	8.8	43.9
≤ 2°C	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

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max	31.5	31.3	30.4	28.8	26.3	24.3	23.5	24.4	26.1	27.8	29.5	30.8	29.9
Low Max	27.9	27.8	27.0	25.3	22.5	20.2	19.4	20.5	22.8	25.0	26.5	27.4	22.2
High Min	25.6	25.7	25.1	23.8	21.8	19.8	18.8	19.3	20.5	21.8	23.7	25.0	24.4
Low Min	22.8	22.8	22.0	20.0	17.8	15.5	14.2	15.0	16.8	18.9	20.8	21.7	17.2

Heron Island Data Availability

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Years of Minima	28	25	26	26	26	24	25	25	25	25	25	26	25.4
Earliest Entry	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962
Latest Entry	2007	2007	2007	2006	2006	2006	2006	2006	2006	2006	2006	2006	2007
Years of Maxima	28	26	26	26	26	24	25	26	25	24	24	26	25.4
Earliest Entry	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962
Latest Entry	2007	2007	2007	2006	2006	2006	2006	2006	2006	2006	2006	2006	2007
Years of Rainfall	48	47	49	47	46	46	47	48	47	47	47	49	47.2
Earliest Entry	1957	1959	1959	1959	1959	1956	1956	1956	1956	1956	1958	1956	1956
Latest Entry	2007	2007	2007	2006	2006	2006	2006	2006	2006	2006	2006	2006	2007

Station Details

HERON ISLAND RES STN
Capricornia, Queensland

23.4417°S 151.9125°E 4m AMSL
Commenced 1956

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13:26 AEST Days of rain and thunder are on the cards for some western and central parts of WA, with the potential for some decent falls in the region. The map below shows showers and thunderstorms approaching the Gascoyne and Upper West districts on Monday morning. Image: Himawari-9 satellite image combined with Weatherzone radar and lightning data, showing three hours of cloud, rain and lightning leading up to 10:20am on Monday, May 13. The thunderstorms and showers are forming in response to an upper-level low moving over the Indian Ocean towards the WA coastline. Image: 500 hPa temperature, wind and height at 11am AWST on Monday, May 13. The largest falls in the coming days are expected in the Gascoyne and Central West districts with widespread totals of 5 to 20mm and isolated areas of 40 to 100mm in the Gascoyne district.