Neptune Island Long-term Averages

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Mean Max (°C)	22.1	22.3	21.2	19.6	17.8	16.0	15.3	15.4	16.3	17.6	19.2	20.6	18.6
Mean Min (°C)	16.3	16.7	16.1	15.1	13.8	12.3	11.4	11.2	11.7	12.4	13.6	14.9	13.8
Mean Rain (mm)	14.2	13.9	17.6	30.4	52.3	70.5	74.5	63.5	46.3	26.6	18.6	17.6	446.1
Median Rain (mm)	7.6	5.4	13.0	24.8	47.4	60.1	67.2	65.6	42.8	19.7	15.4	14.6	424.6
Mean Rain Days	4.8	4.3	6.8	10.2	15.4	17.6	18.7	18.6	14.4	10.2	7.3	6.8	134.4

Neptune Island Daily Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max (°C)	36.9	36.8	34.6	29.4	24.0	21.7	22.5	25.9	27.6	28.8	34.4	35.1	36.9
Low Max (°C)	15.0	16.6	15.5	14.4	12.5	10.3	10.4	10.6	11.7	12.4	13.2	15.0	10.3
High Min (°C)	23.3	23.2	22.2	20.5	19.7	17.8	16.0	15.7	17.0	18.0	20.7	21.5	23.3
Low Min (°C)	9.4	8.9	9.0	6.1	6.7	6.4	5.0	-1.0	-1.0	6.1	7.2	8.2	-1.0
High Rain (mm)	129.5	48.4	60.8	41.0	32.8	44.8	47.0	30.2	65.4	36.0	63.8	32.2	129.5

Neptune Island Monthly Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Mn. Max (°C)	23.9	24.7	23.4	21.1	19.2	17.2	16.5	16.8	18.3	19.3	22.5	23.9	19.7
Low Mn. Max (°C)	19.6	19.4	19.6	17.7	16.6	14.8	14.2	13.5	14.3	15.9	16.8	18.1	17.6
High Mn. Min (°C)	17.9	18.6	18.3	16.7	15.3	13.8	12.5	12.7	13.9	13.6	16.0	16.7	14.8
Low Mn. Min (°C)	14.2	14.8	13.9	13.8	12.4	11.2	10.2	9.4	10.0	10.7	12.4	13.1	13.1
High Rain (mm)	144.2	74.1	87.8	151.4	104.7	154.8	146.4	131.2	143.4	84.6	74.0	68.2	642.9
Low Rain (mm)	0.0	0.0	0.0	1.4	14.2	19.3	28.4	18.8	10.4	0.0	0.6	0.0	294.8

Neptune Island Annual Temperatures & Rainfall

Neptune Island Average Number of Days With Temperatures

	Jan	Feb	Mar	Nov	Dec	Ann
≥ 40°C	0.0	0.0	0.0	0.0	0.0	0.0
≥ 35°C	0.0	0.0	0.0	0.0	0.0	0.1
≥ 30°C	0.8	0.7	0.2	0.2	0.3	2.0
≤ 2°C	0.0	0.0	0.0	0.0	0.0	0.1
≤ 0°C	0.0	0.0	0.0	0.0	0.0	0.0

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max	24.8	25.0	23.6	21.5	19.5	17.5	16.9	17.0	18.0	20.0	21.8	23.3	22.0
Low Max	19.4	19.5	18.9	17.3	15.9	14.5	13.7	13.5	14.1	15.0	16.7	17.8	15.0
High Min	18.0	18.4	17.8	16.7	15.5	13.9	12.9	12.8	13.3	14.0	15.4	16.7	16.5
Low Min	14.4	15.0	14.2	13.3	12.0	10.6	9.8	9.5	9.8	10.6	11.7	13.0	11.0

Neptune Island Data Availability

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Years of Minima	58	60	60	59	60	59	57	56	58	55	56	56	58.0
Earliest Entry	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962
Latest Entry	2024	2024	2024	2024	2023	2023	2023	2023	2023	2023	2023	2023	2024
Years of Maxima	59	60	60	57	61	59	59	58	58	57	59	58	59.0
Earliest Entry	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962	1962
Latest Entry	2024	2024	2024	2024	2023	2023	2023	2023	2023	2023	2023	2023	2024
Years of Rainfall	54	56	56	53	54	54	55	54	53	53	54	55	54.0
Earliest Entry	1958	1958	1958	1958	1958	1958	1958	1958	1958	1958	1957	1957	1957
Latest Entry	2024	2024	2024	2024	2023	2023	2023	2023	2023	2023	2023	2023	2024

Station Details

NEPTUNE ISLAND
Lower Eyre Peninsula, South Australia

35.3365°S 136.1174°E 32m AMSL
Commenced 1957

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