Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Port Stanley. 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 Port Stanley, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.4 C (57.9 F)
-32.8 C (-27.0 F)
n/a
n/a
Feb
12.2 C (54.0 F)
-32.0 C (-25.6 F)
n/a
n/a
Mar
18.9 C (66.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Apr
27.2 C (81.0 F)
-16.7 C (1.9 F)
n/a
n/a
May
31.7 C (89.1 F)
-5.0 C (23.0 F)
n/a
n/a
Jun
34.4 C (93.9 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
34.4 C (93.9 F)
3.3 C (37.9 F)
n/a
n/a
Aug
33.9 C (93.0 F)
0.0 C (32.0 F)
n/a
n/a
Sep
31.7 C (89.1 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
25.6 C (78.1 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
20.0 C (68.0 F)
-18.9 C (-2.0 F)
n/a
n/a
Dec
15.5 C (59.9 F)
-31.7 C (-25.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Port Stanley still stand. 1881 holds the most, with 42.
Standing records at Port Stanley by the year they were set
Year set
Standing records
1874
9
1875
33
1876
39
1877
17
1878
24
1879
37
1880
36
1881
42
1882
14
1883
20
1884
25
1885
40
1886
22
1887
18
1888
21
1889
21
1890
20
1891
16
1892
11
1893
12
1894
16
1895
36
1896
17
1897
15
1898
19
1899
27
1900
24
1901
10
1902
13
1903
13
1904
15
1905
11
1906
14
1907
11
1908
8
1909
15
1910
18
1911
17
1912
16
1913
24
1914
17
1915
15
1916
26
1917
21
1918
10
1919
22
1920
14
1921
16
1922
8
1923
18
1924
3
1948
5
1949
19
1950
5
1957
3
1958
12
1959
13
1960
13
1961
18
1962
14
1963
21
1964
16
1965
15
1966
21
1967
16
1968
9
1969
12
1970
11
1971
21
1972
18
1973
17
1974
11
1975
27
1976
21
1977
21
1978
15
1979
27
1980
13
1981
11
1982
31
1983
22
All-Time Record Progression
4 new records
4 all-time records were set at Port Stanley between 9 July 1911 and 28 June 1967. Each dot is a new record.
When Port Stanley set new all-time records
Date
Kind
Detail
1911-07-09
Record high minimum temperature
Record high minimum temperature 23.9 C (75.0 F)
1913-07-01
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
1961-08-05
Record daily precipitation
Record daily precipitation 81.5 mm (3.2 in)
1967-06-28
Record daily precipitation
Record daily precipitation 83.8 mm (3.3 in)
Wettest Day of Each Month
Jun: 83.8 mm (3.3 in)
The wettest day on record for each calendar month at Port Stanley. The most was 83.8 mm (3.3 in) on 28 June 1967.
Record daily precipitation for each month at Port Stanley
Month
Record daily precipitation (mm)
Date
Jan
41.1 mm (1.6 in)
20 January 1959
Feb
39.1 mm (1.5 in)
4 February 1900
Mar
45.0 mm (1.8 in)
25 March 1913
Apr
62.8 mm (2.5 in)
13 April 1979
May
79.4 mm (3.1 in)
27 May 1982
Jun
83.8 mm (3.3 in)
28 June 1967
Jul
62.2 mm (2.4 in)
3 July 1902
Aug
81.5 mm (3.2 in)
5 August 1961
Sep
65.5 mm (2.6 in)
13 September 1878
Oct
63.0 mm (2.5 in)
14 October 1893
Nov
61.0 mm (2.4 in)
8 November 1877
Dec
74.9 mm (2.9 in)
21 December 1967
Period of Record Coverage
1874 to 1983
Complete yearUnder 90 percent of days
81 years of record at Port Stanley, 1874 to 1983. 6 years have data for under 90 percent of days and are left out of rankings: 1874, 1924, 1948, 1950, 1957, 1962.
Cooler than the station meanWarmer than the station mean
One stripe for each of 72 complete years at Port Stanley, 1875 to 1983. Blue stripes are years cooler than the station's own mean of 7.4 C (45.4 F); red stripes are warmer. The coolest year was 1875, at 5.3 C (41.5 F), and the warmest was 1949, at 9.3 C (48.7 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Port Stanley as warming stripes, 1875 to 1983
Year
Annual mean temperature
Difference from the station mean
1875
5.3 C
-2.14 C
1876
7.4 C
-0.05 C
1877
8.2 C
+0.75 C
1878
8.9 C
+1.45 C
1879
7.6 C
+0.12 C
1880
8.7 C
+1.25 C
1881
8.7 C
+1.23 C
1882
8.0 C
+0.57 C
1884
7.3 C
-0.13 C
1885
5.9 C
-1.57 C
1886
7.3 C
-0.16 C
1887
7.4 C
-0.07 C
1888
6.3 C
-1.13 C
1889
7.8 C
+0.40 C
1890
7.9 C
+0.46 C
1891
8.1 C
+0.62 C
1892
7.3 C
-0.12 C
1893
6.8 C
-0.63 C
1894
8.4 C
+0.95 C
1895
6.8 C
-0.60 C
1896
7.7 C
+0.28 C
1897
7.6 C
+0.16 C
1898
8.4 C
+0.98 C
1899
7.7 C
+0.26 C
1900
8.2 C
+0.76 C
1901
7.5 C
+0.10 C
1902
7.5 C
+0.07 C
1903
7.4 C
0.00 C
1904
5.9 C
-1.57 C
1905
6.9 C
-0.56 C
1906
8.0 C
+0.59 C
1907
6.4 C
-0.99 C
1908
7.7 C
+0.27 C
1909
7.4 C
-0.08 C
1910
7.3 C
-0.18 C
1911
8.1 C
+0.71 C
1912
6.7 C
-0.78 C
1913
8.1 C
+0.63 C
1914
7.2 C
-0.27 C
1915
7.4 C
-0.05 C
1916
7.3 C
-0.12 C
1917
5.5 C
-1.96 C
1918
7.4 C
-0.07 C
1919
8.3 C
+0.90 C
1920
7.0 C
-0.41 C
1921
9.1 C
+1.64 C
1922
8.2 C
+0.81 C
1949
9.3 C
+1.87 C
1958
7.2 C
-0.21 C
1959
7.7 C
+0.22 C
1960
7.0 C
-0.43 C
1963
6.4 C
-1.07 C
1964
7.3 C
-0.10 C
1965
6.9 C
-0.52 C
1966
7.0 C
-0.42 C
1967
7.1 C
-0.31 C
1968
7.3 C
-0.15 C
1969
7.5 C
+0.08 C
1970
7.6 C
+0.12 C
1971
7.9 C
+0.51 C
1972
7.0 C
-0.44 C
1973
8.6 C
+1.12 C
1974
7.2 C
-0.21 C
1975
8.1 C
+0.68 C
1976
6.8 C
-0.68 C
1977
7.4 C
-0.04 C
1978
6.3 C
-1.16 C
1979
6.7 C
-0.69 C
1980
6.8 C
-0.65 C
1981
7.2 C
-0.25 C
1982
7.4 C
-0.07 C
1983
8.0 C
+0.58 C
The fitted trend in annual mean temperature here over 1875 to 1983 is -0.02 C (-0.07 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.04 F (-0.13 to 0.05) per decade. The slope is a straight line fitted to 72 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Port Stanley
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.02 C (-0.07 to 0.03) per decade
-0.04 F (-0.13 to 0.05) per decade
1875 to 1983
72
Not clearly different from zero
Mean daily maximum
-0.06 C (-0.11 to -0.01) per decade
-0.11 F (-0.20 to -0.02) per decade
1875 to 1983
72
Fall
Mean daily minimum
0.02 C (-0.04 to 0.07) per decade
0.03 F (-0.08 to 0.13) per decade
1875 to 1983
72
Not clearly different from zero
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1871 to 1983
Yearly extremes at Port Stanley: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
34.4 C (93.9 F)
1876
31.1 C (88.0 F)
81
Coldest night (TNn)
-32.8 C (-27.0 F)
1884
-23.9 C (-11.0 F)
81
Wettest day (Rx1day)
83.8 mm (3.3 in)
1967
44.4 mm (1.7 in)
84
Wettest five days (Rx5day)
126.2 mm (5.0 in)
1977
71.1 mm (2.8 in)
84
Longest dry spell (CDD)
41 days
1908
17 days
84
Hottest day (TXx)
The hottest day of the year at Port Stanley, 1871 to 1983. The record is 34.4 C (93.9 F) in 1876, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at Port Stanley by year
Year
Hottest day (TXx)
1871
n/a
1872
n/a
1873
n/a
1874
33.9 C (93.0 F)
1875
29.4 C (84.9 F)
1876
34.4 C (93.9 F)
1877
31.1 C (88.0 F)
1878
31.1 C (88.0 F)
1879
30.6 C (87.1 F)
1880
34.4 C (93.9 F)
1881
30.6 C (87.1 F)
1882
29.4 C (84.9 F)
1883
30.6 C (87.1 F)
1884
31.1 C (88.0 F)
1885
31.7 C (89.1 F)
1886
32.8 C (91.0 F)
1887
32.8 C (91.0 F)
1888
32.8 C (91.0 F)
1889
30.0 C (86.0 F)
1890
31.7 C (89.1 F)
1891
31.7 C (89.1 F)
1892
30.6 C (87.1 F)
1893
31.7 C (89.1 F)
1894
31.7 C (89.1 F)
1895
32.2 C (90.0 F)
1896
31.7 C (89.1 F)
1897
31.1 C (88.0 F)
1898
31.7 C (89.1 F)
1899
30.0 C (86.0 F)
1900
31.7 C (89.1 F)
1901
31.7 C (89.1 F)
1902
31.1 C (88.0 F)
1903
29.4 C (84.9 F)
1904
28.9 C (84.0 F)
1905
30.6 C (87.1 F)
1906
31.7 C (89.1 F)
1907
28.9 C (84.0 F)
1908
32.8 C (91.0 F)
1909
28.9 C (84.0 F)
1910
31.7 C (89.1 F)
1911
31.1 C (88.0 F)
1912
31.1 C (88.0 F)
1913
32.8 C (91.0 F)
1914
31.7 C (89.1 F)
1915
28.9 C (84.0 F)
1916
32.8 C (91.0 F)
1917
32.8 C (91.0 F)
1918
30.0 C (86.0 F)
1919
32.2 C (90.0 F)
1920
28.9 C (84.0 F)
1921
31.7 C (89.1 F)
1922
29.4 C (84.9 F)
1923
30.0 C (86.0 F)
1924
8.3 C (46.9 F)
1948
19.4 C (66.9 F)
1949
33.9 C (93.0 F)
1950
14.4 C (57.9 F)
1957
27.8 C (82.0 F)
1958
29.4 C (84.9 F)
1959
30.6 C (87.1 F)
1960
30.6 C (87.1 F)
1961
28.3 C (82.9 F)
1962
28.9 C (84.0 F)
1963
29.4 C (84.9 F)
1964
30.0 C (86.0 F)
1965
30.0 C (86.0 F)
1966
32.2 C (90.0 F)
1967
29.4 C (84.9 F)
1968
30.6 C (87.1 F)
1969
31.7 C (89.1 F)
1970
30.6 C (87.1 F)
1971
32.2 C (90.0 F)
1972
31.1 C (88.0 F)
1973
33.3 C (91.9 F)
1974
28.9 C (84.0 F)
1975
31.7 C (89.1 F)
1976
30.0 C (86.0 F)
1977
31.0 C (87.8 F)
1978
32.5 C (90.5 F)
1979
31.0 C (87.8 F)
1980
31.0 C (87.8 F)
1981
30.5 C (86.9 F)
1982
28.5 C (83.3 F)
1983
34.0 C (93.2 F)
Coldest night (TNn)
The coldest night of the year at Port Stanley, 1871 to 1983. The record is -32.8 C (-27.0 F) in 1884, marked on the chart; the median year is -23.9 C (-11.0 F).
Coldest night (TNn) at Port Stanley by year
Year
Coldest night (TNn)
1871
n/a
1872
n/a
1873
n/a
1874
-15.0 C (5.0 F)
1875
-29.4 C (-20.9 F)
1876
-22.8 C (-9.0 F)
1877
-24.4 C (-11.9 F)
1878
-22.2 C (-8.0 F)
1879
-23.3 C (-9.9 F)
1880
-23.9 C (-11.0 F)
1881
-31.1 C (-24.0 F)
1882
-23.3 C (-9.9 F)
1883
-25.6 C (-14.1 F)
1884
-32.8 C (-27.0 F)
1885
-31.1 C (-24.0 F)
1886
-28.9 C (-20.0 F)
1887
-26.7 C (-16.1 F)
1888
-26.1 C (-15.0 F)
1889
-28.9 C (-20.0 F)
1890
-19.4 C (-2.9 F)
1891
-16.7 C (1.9 F)
1892
-32.2 C (-26.0 F)
1893
-26.1 C (-15.0 F)
1894
-20.6 C (-5.1 F)
1895
-30.0 C (-22.0 F)
1896
-27.8 C (-18.0 F)
1897
-25.0 C (-13.0 F)
1898
-20.6 C (-5.1 F)
1899
-28.3 C (-18.9 F)
1900
-22.8 C (-9.0 F)
1901
-23.3 C (-9.9 F)
1902
-21.1 C (-6.0 F)
1903
-20.6 C (-5.1 F)
1904
-27.2 C (-17.0 F)
1905
-25.0 C (-13.0 F)
1906
-25.0 C (-13.0 F)
1907
-21.7 C (-7.1 F)
1908
-26.7 C (-16.1 F)
1909
-26.7 C (-16.1 F)
1910
-26.1 C (-15.0 F)
1911
-15.6 C (3.9 F)
1912
-31.1 C (-24.0 F)
1913
-21.1 C (-6.0 F)
1914
-31.7 C (-25.1 F)
1915
-31.7 C (-25.1 F)
1916
-26.7 C (-16.1 F)
1917
-27.8 C (-18.0 F)
1918
-30.6 C (-23.1 F)
1919
-20.6 C (-5.1 F)
1920
-26.7 C (-16.1 F)
1921
-16.7 C (1.9 F)
1922
-21.1 C (-6.0 F)
1923
-23.3 C (-9.9 F)
1924
-23.9 C (-11.0 F)
1948
-13.3 C (8.1 F)
1949
-15.0 C (5.0 F)
1950
-15.0 C (5.0 F)
1957
-13.3 C (8.1 F)
1958
-20.6 C (-5.1 F)
1959
-23.9 C (-11.0 F)
1960
-21.1 C (-6.0 F)
1961
-23.9 C (-11.0 F)
1962
-28.3 C (-18.9 F)
1963
-27.2 C (-17.0 F)
1964
-21.7 C (-7.1 F)
1965
-22.8 C (-9.0 F)
1966
-22.8 C (-9.0 F)
1967
-24.4 C (-11.9 F)
1968
-23.9 C (-11.0 F)
1969
-18.3 C (-0.9 F)
1970
-30.0 C (-22.0 F)
1971
-25.6 C (-14.1 F)
1972
-23.3 C (-9.9 F)
1973
-23.3 C (-9.9 F)
1974
-25.0 C (-13.0 F)
1975
-23.9 C (-11.0 F)
1976
-32.2 C (-26.0 F)
1977
-27.8 C (-18.0 F)
1978
-32.0 C (-25.6 F)
1979
-26.0 C (-14.8 F)
1980
-22.0 C (-7.6 F)
1981
-23.0 C (-9.4 F)
1982
-25.0 C (-13.0 F)
1983
-20.0 C (-4.0 F)
Wettest day (Rx1day)
The wettest day of the year at Port Stanley, 1871 to 1983. The record is 83.8 mm (3.3 in) in 1967, marked on the chart; the median year is 44.4 mm (1.7 in).
Wettest day (Rx1day) at Port Stanley by year
Year
Wettest day (Rx1day)
1871
13.2 mm (0.5 in)
1872
34.8 mm (1.4 in)
1873
59.9 mm (2.4 in)
1874
51.3 mm (2.0 in)
1875
44.5 mm (1.8 in)
1876
39.1 mm (1.5 in)
1877
61.0 mm (2.4 in)
1878
65.5 mm (2.6 in)
1879
50.8 mm (2.0 in)
1880
41.9 mm (1.6 in)
1881
41.1 mm (1.6 in)
1882
47.5 mm (1.9 in)
1883
37.1 mm (1.5 in)
1884
34.0 mm (1.3 in)
1885
53.3 mm (2.1 in)
1886
45.7 mm (1.8 in)
1887
41.7 mm (1.6 in)
1888
34.8 mm (1.4 in)
1889
46.7 mm (1.8 in)
1890
56.4 mm (2.2 in)
1891
40.1 mm (1.6 in)
1892
37.6 mm (1.5 in)
1893
63.0 mm (2.5 in)
1894
40.4 mm (1.6 in)
1895
27.4 mm (1.1 in)
1896
42.7 mm (1.7 in)
1897
41.9 mm (1.6 in)
1898
38.1 mm (1.5 in)
1899
38.1 mm (1.5 in)
1900
40.6 mm (1.6 in)
1901
48.3 mm (1.9 in)
1902
62.2 mm (2.4 in)
1903
54.1 mm (2.1 in)
1904
34.3 mm (1.4 in)
1905
33.8 mm (1.3 in)
1906
51.1 mm (2.0 in)
1907
26.2 mm (1.0 in)
1908
65.3 mm (2.6 in)
1909
48.5 mm (1.9 in)
1910
47.5 mm (1.9 in)
1911
46.5 mm (1.8 in)
1912
54.1 mm (2.1 in)
1913
49.8 mm (2.0 in)
1914
41.7 mm (1.6 in)
1915
33.3 mm (1.3 in)
1916
51.8 mm (2.0 in)
1917
40.6 mm (1.6 in)
1918
41.9 mm (1.6 in)
1919
42.2 mm (1.7 in)
1920
32.5 mm (1.3 in)
1921
53.1 mm (2.1 in)
1922
63.2 mm (2.5 in)
1923
33.8 mm (1.3 in)
1924
28.4 mm (1.1 in)
1948
13.7 mm (0.5 in)
1949
30.7 mm (1.2 in)
1950
32.5 mm (1.3 in)
1957
45.7 mm (1.8 in)
1958
45.0 mm (1.8 in)
1959
41.1 mm (1.6 in)
1960
46.0 mm (1.8 in)
1961
81.5 mm (3.2 in)
1962
49.0 mm (1.9 in)
1963
43.4 mm (1.7 in)
1964
73.7 mm (2.9 in)
1965
48.8 mm (1.9 in)
1966
41.9 mm (1.6 in)
1967
83.8 mm (3.3 in)
1968
83.8 mm (3.3 in)
1969
44.2 mm (1.7 in)
1970
35.3 mm (1.4 in)
1971
57.2 mm (2.3 in)
1972
43.2 mm (1.7 in)
1973
28.7 mm (1.1 in)
1974
31.8 mm (1.3 in)
1975
62.2 mm (2.4 in)
1976
38.9 mm (1.5 in)
1977
50.0 mm (2.0 in)
1978
29.6 mm (1.2 in)
1979
62.8 mm (2.5 in)
1980
49.5 mm (1.9 in)
1981
58.0 mm (2.3 in)
1982
79.4 mm (3.1 in)
1983
59.5 mm (2.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Port Stanley, 1871 to 1983. The record is 126.2 mm (5.0 in) in 1977, marked on the chart; the median year is 71.1 mm (2.8 in).
Wettest five days (Rx5day) at Port Stanley by year
Year
Wettest five days (Rx5day)
1871
14.7 mm (0.6 in)
1872
57.4 mm (2.3 in)
1873
72.9 mm (2.9 in)
1874
54.1 mm (2.1 in)
1875
56.0 mm (2.2 in)
1876
63.5 mm (2.5 in)
1877
69.6 mm (2.7 in)
1878
114.0 mm (4.5 in)
1879
74.4 mm (2.9 in)
1880
77.2 mm (3.0 in)
1881
63.3 mm (2.5 in)
1882
60.0 mm (2.4 in)
1883
54.1 mm (2.1 in)
1884
55.7 mm (2.2 in)
1885
62.4 mm (2.5 in)
1886
55.9 mm (2.2 in)
1887
76.4 mm (3.0 in)
1888
44.7 mm (1.8 in)
1889
83.7 mm (3.3 in)
1890
64.9 mm (2.6 in)
1891
69.3 mm (2.7 in)
1892
70.1 mm (2.8 in)
1893
75.1 mm (3.0 in)
1894
101.3 mm (4.0 in)
1895
54.9 mm (2.2 in)
1896
56.2 mm (2.2 in)
1897
65.3 mm (2.6 in)
1898
65.3 mm (2.6 in)
1899
59.7 mm (2.4 in)
1900
72.1 mm (2.8 in)
1901
65.1 mm (2.6 in)
1902
100.1 mm (3.9 in)
1903
109.7 mm (4.3 in)
1904
51.6 mm (2.0 in)
1905
49.3 mm (1.9 in)
1906
94.7 mm (3.7 in)
1907
56.8 mm (2.2 in)
1908
88.9 mm (3.5 in)
1909
74.1 mm (2.9 in)
1910
84.3 mm (3.3 in)
1911
56.4 mm (2.2 in)
1912
81.6 mm (3.2 in)
1913
103.7 mm (4.1 in)
1914
84.9 mm (3.3 in)
1915
68.5 mm (2.7 in)
1916
99.6 mm (3.9 in)
1917
55.4 mm (2.2 in)
1918
53.4 mm (2.1 in)
1919
72.2 mm (2.8 in)
1920
70.3 mm (2.8 in)
1921
61.8 mm (2.4 in)
1922
99.3 mm (3.9 in)
1923
61.9 mm (2.4 in)
1924
37.1 mm (1.5 in)
1948
32.3 mm (1.3 in)
1949
51.8 mm (2.0 in)
1950
77.4 mm (3.0 in)
1957
58.3 mm (2.3 in)
1958
82.3 mm (3.2 in)
1959
66.2 mm (2.6 in)
1960
77.0 mm (3.0 in)
1961
117.6 mm (4.6 in)
1962
75.9 mm (3.0 in)
1963
81.0 mm (3.2 in)
1964
101.2 mm (4.0 in)
1965
75.4 mm (3.0 in)
1966
90.9 mm (3.6 in)
1967
90.2 mm (3.6 in)
1968
95.3 mm (3.8 in)
1969
57.2 mm (2.3 in)
1970
55.9 mm (2.2 in)
1971
60.0 mm (2.4 in)
1972
86.9 mm (3.4 in)
1973
93.9 mm (3.7 in)
1974
62.7 mm (2.5 in)
1975
115.5 mm (4.5 in)
1976
80.6 mm (3.2 in)
1977
126.2 mm (5.0 in)
1978
57.4 mm (2.3 in)
1979
99.6 mm (3.9 in)
1980
84.1 mm (3.3 in)
1981
71.9 mm (2.8 in)
1982
102.0 mm (4.0 in)
1983
122.4 mm (4.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Port Stanley, 1871 to 1983. The record is 41 days in 1908, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Port Stanley by year
Year
Longest dry spell (CDD)
1871
8 days
1872
32 days
1873
14 days
1874
22 days
1875
13 days
1876
11 days
1877
25 days
1878
13 days
1879
16 days
1880
12 days
1881
19 days
1882
16 days
1883
14 days
1884
22 days
1885
19 days
1886
17 days
1887
18 days
1888
20 days
1889
19 days
1890
15 days
1891
10 days
1892
18 days
1893
14 days
1894
26 days
1895
15 days
1896
9 days
1897
23 days
1898
18 days
1899
20 days
1900
13 days
1901
16 days
1902
21 days
1903
18 days
1904
14 days
1905
18 days
1906
11 days
1907
16 days
1908
41 days
1909
13 days
1910
27 days
1911
13 days
1912
15 days
1913
15 days
1914
16 days
1915
16 days
1916
17 days
1917
20 days
1918
18 days
1919
14 days
1920
16 days
1921
11 days
1922
17 days
1923
22 days
1924
10 days
1948
14 days
1949
20 days
1950
5 days
1957
23 days
1958
22 days
1959
19 days
1960
19 days
1961
17 days
1962
15 days
1963
29 days
1964
20 days
1965
18 days
1966
18 days
1967
20 days
1968
13 days
1969
19 days
1970
26 days
1971
17 days
1972
14 days
1973
17 days
1974
14 days
1975
15 days
1976
16 days
1977
9 days
1978
19 days
1979
13 days
1980
15 days
1981
11 days
1982
12 days
1983
17 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.
Frost Dates and Growing Season
72 years with a frost
Across 72 years with a frost, the median last spring frost at Port Stanley falls on 14 May and the median first autumn frost on 8 October, which leaves a median of 148 days between them.
In 1918 to 1983 the median growing season was 146 days. That is 4 days fewer than in 1875 to 1905.
Fitted over all years, the growing season changes by -0.4 days per decade at this station.
Frost dates and growing season at Port Stanley
Measure
Median, all years
Earliest period (1875 to 1905)
Recent period (1918 to 1983)
Recent against earliest
Fitted trend
Last spring frost
14 May
15 May
15 May
no change
+0.3 days per decade
First autumn frost
8 October
9 October
8 October
1 day earlier
-0.1 days per decade
Growing days
148 days
150 days
146 days
4 days fewer
-0.4 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
79 years, 1872 to 1983
A day with at least 45.2 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 89.5 mm (3.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Port Stanley: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
45.2 mm (1.8 in)
5 years
56.9 mm (2.2 in)
10 years
64.7 mm (2.5 in)
25 years
74.6 mm (2.9 in)
50 years
82.1 mm (3.2 in)
100 years
89.5 mm (3.5 in)
Longer than the 79 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 79 years of values from 1872 to 1983.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 83.8 mm (3.3 in) in 1967; 83.8 mm (3.3 in) in 1968; 81.5 mm (3.2 in) in 1961.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Port Stanley, at 1894. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1894 ran 0.4 C (0.8 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Port Stanley, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1894
-0.4
-0.8
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Port Stanley standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Port Stanley 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.