Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Portsea. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Portsea, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
n/a
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Feb
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Mar
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Apr
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n/a
May
n/a
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Jun
n/a
n/a
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Jul
n/a
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n/a
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Aug
n/a
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Sep
n/a
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Oct
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Nov
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Dec
n/a
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Which Years Hold Standing Records
0 standing records
0 records at Portsea still stand.
Standing records at Portsea by the year they were set
Year set
Standing records
Wettest Day of Each Month
Mar: 78.7 mm (3.1 in)
The wettest day on record for each calendar month at Portsea. The most was 78.7 mm (3.1 in) on 24 March 1955.
Record daily precipitation for each month at Portsea
Yearly extremes at Portsea: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Wettest day (Rx1day)
78.7 mm (3.1 in)
1955
34.3 mm (1.4 in)
33
Wettest five days (Rx5day)
128.2 mm (5.0 in)
1939
59.2 mm (2.3 in)
33
Longest dry spell (CDD)
41 days
1956
17 days
33
Wettest day (Rx1day)
The wettest day of the year at Portsea, 1936 to 1968. The record is 78.7 mm (3.1 in) in 1955, marked on the chart; the median year is 34.3 mm (1.4 in).
Wettest day (Rx1day) at Portsea by year
Year
Wettest day (Rx1day)
1936
28.4 mm (1.1 in)
1937
33.8 mm (1.3 in)
1938
38.1 mm (1.5 in)
1939
45.2 mm (1.8 in)
1940
36.8 mm (1.4 in)
1941
34.3 mm (1.4 in)
1942
33.8 mm (1.3 in)
1943
33.8 mm (1.3 in)
1944
32.0 mm (1.3 in)
1945
20.1 mm (0.8 in)
1946
45.5 mm (1.8 in)
1947
43.2 mm (1.7 in)
1948
31.0 mm (1.2 in)
1949
66.0 mm (2.6 in)
1950
61.0 mm (2.4 in)
1951
50.8 mm (2.0 in)
1952
66.0 mm (2.6 in)
1953
31.8 mm (1.3 in)
1954
40.9 mm (1.6 in)
1955
78.7 mm (3.1 in)
1956
27.4 mm (1.1 in)
1957
24.9 mm (1.0 in)
1958
29.5 mm (1.2 in)
1959
41.9 mm (1.6 in)
1960
50.3 mm (2.0 in)
1961
23.6 mm (0.9 in)
1962
33.0 mm (1.3 in)
1963
41.1 mm (1.6 in)
1964
45.7 mm (1.8 in)
1965
33.8 mm (1.3 in)
1966
36.6 mm (1.4 in)
1967
18.5 mm (0.7 in)
1968
32.5 mm (1.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Portsea, 1936 to 1968. The record is 128.2 mm (5.0 in) in 1939, marked on the chart; the median year is 59.2 mm (2.3 in).
Wettest five days (Rx5day) at Portsea by year
Year
Wettest five days (Rx5day)
1936
59.6 mm (2.3 in)
1937
88.4 mm (3.5 in)
1938
41.7 mm (1.6 in)
1939
128.2 mm (5.0 in)
1940
37.8 mm (1.5 in)
1941
58.0 mm (2.3 in)
1942
43.5 mm (1.7 in)
1943
36.1 mm (1.4 in)
1944
39.9 mm (1.6 in)
1945
35.1 mm (1.4 in)
1946
87.7 mm (3.5 in)
1947
72.7 mm (2.9 in)
1948
54.8 mm (2.2 in)
1949
77.0 mm (3.0 in)
1950
96.1 mm (3.8 in)
1951
96.0 mm (3.8 in)
1952
106.6 mm (4.2 in)
1953
39.3 mm (1.5 in)
1954
73.7 mm (2.9 in)
1955
87.0 mm (3.4 in)
1956
41.7 mm (1.6 in)
1957
49.3 mm (1.9 in)
1958
41.7 mm (1.6 in)
1959
57.2 mm (2.3 in)
1960
105.4 mm (4.1 in)
1961
41.6 mm (1.6 in)
1962
60.7 mm (2.4 in)
1963
71.9 mm (2.8 in)
1964
59.2 mm (2.3 in)
1965
84.9 mm (3.3 in)
1966
56.2 mm (2.2 in)
1967
36.6 mm (1.4 in)
1968
79.2 mm (3.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Portsea, 1936 to 1968. The record is 41 days in 1956, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Portsea by year
Year
Longest dry spell (CDD)
1936
15 days
1937
17 days
1938
20 days
1939
28 days
1940
21 days
1941
16 days
1942
17 days
1943
16 days
1944
16 days
1945
14 days
1946
17 days
1947
14 days
1948
28 days
1949
14 days
1950
26 days
1951
28 days
1952
22 days
1953
17 days
1954
25 days
1955
18 days
1956
41 days
1957
18 days
1958
15 days
1959
17 days
1960
15 days
1961
27 days
1962
21 days
1963
15 days
1964
14 days
1965
19 days
1966
8 days
1967
30 days
1968
16 days
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Download the Data
Data for Portsea standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Portsea threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-14 (14 October 2026). Records are computed by this site and are not official.