Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Istanbul. 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 Istanbul, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.7 C (71.1 F)
-9.7 C (14.5 F)
n/a
n/a
Feb
24.0 C (75.2 F)
-8.2 C (17.2 F)
n/a
n/a
Mar
26.8 C (80.2 F)
-7.0 C (19.4 F)
n/a
n/a
Apr
32.9 C (91.2 F)
-2.0 C (28.4 F)
n/a
n/a
May
34.1 C (93.4 F)
2.8 C (37.0 F)
n/a
n/a
Jun
39.2 C (102.6 F)
7.1 C (44.8 F)
n/a
n/a
Jul
39.7 C (103.5 F)
10.5 C (50.9 F)
n/a
n/a
Aug
40.5 C (104.9 F)
10.2 C (50.4 F)
n/a
n/a
Sep
37.5 C (99.5 F)
6.0 C (42.8 F)
n/a
n/a
Oct
34.2 C (93.6 F)
2.2 C (36.0 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-7.2 C (19.0 F)
n/a
n/a
Dec
21.5 C (70.7 F)
-8.4 C (16.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Istanbul still stand. 1932 holds the most, with 43.
Standing records at Istanbul by the year they were set
Year set
Standing records
1929
38
1930
9
1931
22
1932
43
1933
30
1934
22
1935
16
1936
21
1937
21
1938
7
1939
7
1940
20
1941
36
1942
35
1943
15
1944
13
1945
22
1946
14
1947
22
1948
32
1949
23
1950
24
1951
15
1952
25
1953
20
1954
14
1955
18
1956
21
1957
20
1958
26
1959
23
1960
25
1961
15
1962
16
1963
21
1964
19
1965
15
1966
16
1967
9
1968
12
1969
28
1970
21
1971
19
1972
12
1973
14
1974
14
1975
11
1976
19
1977
26
1978
16
1979
18
1980
13
1981
13
1982
15
1983
10
1984
25
1985
25
1986
5
1987
37
1988
8
1989
16
1990
20
1991
20
1992
11
1993
11
1994
31
1995
20
1996
8
1997
16
1998
19
1999
19
2000
26
2001
34
2002
21
2003
15
2004
4
2007
2
All-Time Record Progression
1 new records
1 all-time records were set at Istanbul between 11 August 1970 and 11 August 1970. Each dot is a new record.
When Istanbul set new all-time records
Date
Kind
Detail
1970-08-11
Record high maximum temperature
Record high maximum temperature 40.5 C (104.9 F)
Wettest Day of Each Month
Nov: 88.0 mm (3.5 in)
The wettest day on record for each calendar month at Istanbul. The most was 88.0 mm (3.5 in) on 4 November 1962.
Record daily precipitation for each month at Istanbul
Month
Record daily precipitation (mm)
Date
Jan
54.0 mm (2.1 in)
21 January 1983
Feb
73.0 mm (2.9 in)
1 February 1934
Mar
52.0 mm (2.0 in)
19 March 1958
Apr
50.0 mm (2.0 in)
20 April 1978
May
56.0 mm (2.2 in)
12 May 1974
Jun
45.0 mm (1.8 in)
11 June 1932
Jul
68.0 mm (2.7 in)
10 July 1995
Aug
72.0 mm (2.8 in)
15 August 1974
Sep
80.0 mm (3.1 in)
10 September 1981
Oct
81.0 mm (3.2 in)
30 October 1978
Nov
88.0 mm (3.5 in)
4 November 1962
Dec
68.0 mm (2.7 in)
7 December 1963
Period of Record Coverage
1929 to 2007
Complete yearUnder 90 percent of days
77 years of record at Istanbul, 1929 to 2007. 2 years have data for under 90 percent of days and are left out of rankings: 2004, 2007.
Cooler than the station meanWarmer than the station mean
One stripe for each of 75 complete years at Istanbul, 1929 to 2003. Blue stripes are years cooler than the station's own mean of 14.4 C (57.9 F); red stripes are warmer. The coolest year was 1942, at 13.0 C (55.5 F), and the warmest was 2001, at 15.8 C (60.5 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Istanbul as warming stripes, 1929 to 2003
Year
Annual mean temperature
Difference from the station mean
1929
13.8 C
-0.65 C
1930
14.7 C
+0.32 C
1931
14.3 C
-0.13 C
1932
15.0 C
+0.60 C
1933
13.5 C
-0.95 C
1934
14.8 C
+0.36 C
1935
14.3 C
-0.16 C
1936
14.8 C
+0.38 C
1937
15.1 C
+0.66 C
1938
14.3 C
-0.15 C
1939
14.7 C
+0.26 C
1940
13.5 C
-0.89 C
1941
13.7 C
-0.71 C
1942
13.0 C
-1.37 C
1943
13.5 C
-0.95 C
1944
14.3 C
-0.12 C
1945
14.0 C
-0.43 C
1946
14.9 C
+0.50 C
1947
14.5 C
+0.12 C
1948
13.5 C
-0.93 C
1949
13.2 C
-1.18 C
1950
14.4 C
+0.00 C
1951
14.7 C
+0.30 C
1952
14.9 C
+0.49 C
1953
13.5 C
-0.92 C
1954
14.2 C
-0.24 C
1955
14.9 C
+0.51 C
1956
13.5 C
-0.91 C
1957
14.4 C
+0.03 C
1958
14.7 C
+0.25 C
1959
13.3 C
-1.09 C
1960
14.7 C
+0.24 C
1961
14.6 C
+0.20 C
1962
14.9 C
+0.53 C
1963
14.5 C
+0.11 C
1964
13.7 C
-0.75 C
1965
13.9 C
-0.47 C
1966
15.7 C
+1.28 C
1967
14.2 C
-0.19 C
1968
14.4 C
+0.00 C
1969
14.4 C
-0.06 C
1970
14.9 C
+0.52 C
1971
14.5 C
+0.08 C
1972
14.3 C
-0.08 C
1973
14.1 C
-0.29 C
1974
14.2 C
-0.17 C
1975
14.7 C
+0.30 C
1976
13.7 C
-0.71 C
1977
14.6 C
+0.23 C
1978
14.5 C
+0.04 C
1979
15.1 C
+0.64 C
1980
14.2 C
-0.22 C
1981
14.6 C
+0.16 C
1982
14.2 C
-0.18 C
1983
14.4 C
-0.02 C
1984
14.7 C
+0.26 C
1985
13.9 C
-0.52 C
1986
14.6 C
+0.15 C
1987
13.9 C
-0.50 C
1988
14.4 C
-0.01 C
1989
14.7 C
+0.25 C
1990
14.9 C
+0.46 C
1991
13.9 C
-0.48 C
1992
14.0 C
-0.38 C
1993
14.1 C
-0.29 C
1994
15.7 C
+1.26 C
1995
14.9 C
+0.52 C
1996
14.4 C
-0.03 C
1997
13.8 C
-0.57 C
1998
15.1 C
+0.72 C
1999
15.7 C
+1.32 C
2000
15.2 C
+0.77 C
2001
15.8 C
+1.41 C
2002
15.4 C
+0.98 C
2003
14.6 C
+0.19 C
The annual mean temperature here has risen by 0.09 C (0.03 to 0.15) per decade over 1929 to 2003. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 75 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Istanbul
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.09 C (0.03 to 0.15) per decade
0.2 F (0.1 to 0.3) per decade
1929 to 2003
75
Rise
Mean daily maximum
0.00 C (-0.07 to 0.06) per decade
-0.01 F (-0.13 to 0.11) per decade
1929 to 2003
75
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.2 to 0.5) per decade
1929 to 2003
75
Rise
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
1929 to 2007
Yearly extremes at Istanbul: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.5 C (104.9 F)
1970
34.6 C (94.3 F)
77
Coldest night (TNn)
-9.7 C (14.5 F)
1954
-4.5 C (23.9 F)
77
Wettest day (Rx1day)
88.0 mm (3.5 in)
1962
46.0 mm (1.8 in)
77
Wettest five days (Rx5day)
162.0 mm (6.4 in)
1938
64.0 mm (2.5 in)
77
Longest dry spell (CDD)
6 days
2007
2 days
77
Hottest day (TXx)
The hottest day of the year at Istanbul, 1929 to 2007. The record is 40.5 C (104.9 F) in 1970, marked on the chart; the median year is 34.6 C (94.3 F).
Hottest day (TXx) at Istanbul by year
Year
Hottest day (TXx)
1929
33.3 C (91.9 F)
1930
34.4 C (93.9 F)
1931
36.9 C (98.4 F)
1932
35.6 C (96.1 F)
1933
33.1 C (91.6 F)
1934
36.4 C (97.5 F)
1935
34.5 C (94.1 F)
1936
33.1 C (91.6 F)
1937
34.8 C (94.6 F)
1938
37.5 C (99.5 F)
1939
33.8 C (92.8 F)
1940
35.1 C (95.2 F)
1941
34.4 C (93.9 F)
1942
36.6 C (97.9 F)
1943
32.4 C (90.3 F)
1944
35.4 C (95.7 F)
1945
39.4 C (102.9 F)
1946
36.8 C (98.2 F)
1947
32.8 C (91.0 F)
1948
34.6 C (94.3 F)
1949
33.8 C (92.8 F)
1950
36.5 C (97.7 F)
1951
34.0 C (93.2 F)
1952
36.0 C (96.8 F)
1953
32.1 C (89.8 F)
1954
35.6 C (96.1 F)
1955
35.2 C (95.4 F)
1956
34.6 C (94.3 F)
1957
36.0 C (96.8 F)
1958
37.2 C (99.0 F)
1959
34.7 C (94.5 F)
1960
31.8 C (89.2 F)
1961
34.0 C (93.2 F)
1962
34.2 C (93.6 F)
1963
34.4 C (93.9 F)
1964
33.5 C (92.3 F)
1965
33.7 C (92.7 F)
1966
38.3 C (100.9 F)
1967
34.4 C (93.9 F)
1968
35.7 C (96.3 F)
1969
36.3 C (97.3 F)
1970
40.5 C (104.9 F)
1971
32.5 C (90.5 F)
1972
36.8 C (98.2 F)
1973
37.3 C (99.1 F)
1974
36.3 C (97.3 F)
1975
33.5 C (92.3 F)
1976
33.3 C (91.9 F)
1977
37.5 C (99.5 F)
1978
36.3 C (97.3 F)
1979
35.4 C (95.7 F)
1980
35.7 C (96.3 F)
1981
33.1 C (91.6 F)
1982
39.2 C (102.6 F)
1983
33.1 C (91.6 F)
1984
39.2 C (102.6 F)
1985
37.0 C (98.6 F)
1986
33.2 C (91.8 F)
1987
35.8 C (96.4 F)
1988
33.3 C (91.9 F)
1989
33.8 C (92.8 F)
1990
32.2 C (90.0 F)
1991
34.0 C (93.2 F)
1992
34.6 C (94.3 F)
1993
33.6 C (92.5 F)
1994
35.0 C (95.0 F)
1995
33.6 C (92.5 F)
1996
33.0 C (91.4 F)
1997
35.2 C (95.4 F)
1998
34.6 C (94.3 F)
1999
34.2 C (93.6 F)
2000
39.7 C (103.5 F)
2001
34.2 C (93.6 F)
2002
38.8 C (101.8 F)
2003
36.4 C (97.5 F)
2004
14.9 C (58.8 F)
2007
30.1 C (86.2 F)
Coldest night (TNn)
The coldest night of the year at Istanbul, 1929 to 2007. The record is -9.7 C (14.5 F) in 1954, marked on the chart; the median year is -4.5 C (23.9 F).
Coldest night (TNn) at Istanbul by year
Year
Coldest night (TNn)
1929
-8.2 C (17.2 F)
1930
-2.7 C (27.1 F)
1931
-3.0 C (26.6 F)
1932
-7.6 C (18.3 F)
1933
-8.4 C (16.9 F)
1934
-5.4 C (22.3 F)
1935
-3.4 C (25.9 F)
1936
-8.0 C (17.6 F)
1937
-7.1 C (19.2 F)
1938
-4.0 C (24.8 F)
1939
-3.2 C (26.2 F)
1940
-6.0 C (21.2 F)
1941
-8.2 C (17.2 F)
1942
-9.4 C (15.1 F)
1943
-7.4 C (18.7 F)
1944
-4.0 C (24.8 F)
1945
-4.0 C (24.8 F)
1946
-6.6 C (20.1 F)
1947
-8.0 C (17.6 F)
1948
-7.2 C (19.0 F)
1949
-6.0 C (21.2 F)
1950
-9.3 C (15.3 F)
1951
-4.5 C (23.9 F)
1952
-3.2 C (26.2 F)
1953
-7.0 C (19.4 F)
1954
-9.7 C (14.5 F)
1955
-0.9 C (30.4 F)
1956
-8.5 C (16.7 F)
1957
-4.5 C (23.9 F)
1958
-4.0 C (24.8 F)
1959
-2.4 C (27.7 F)
1960
-7.6 C (18.3 F)
1961
-8.7 C (16.3 F)
1962
-2.2 C (28.0 F)
1963
-8.2 C (17.2 F)
1964
-7.3 C (18.9 F)
1965
-5.1 C (22.8 F)
1966
-2.4 C (27.7 F)
1967
-8.3 C (17.1 F)
1968
-8.4 C (16.9 F)
1969
-9.6 C (14.7 F)
1970
-2.4 C (27.7 F)
1971
-4.8 C (23.4 F)
1972
-5.7 C (21.7 F)
1973
-5.8 C (21.6 F)
1974
-3.6 C (25.5 F)
1975
-3.2 C (26.2 F)
1976
-6.3 C (20.7 F)
1977
-2.8 C (27.0 F)
1978
-1.9 C (28.6 F)
1979
-7.9 C (17.8 F)
1980
-4.8 C (23.4 F)
1981
-2.8 C (27.0 F)
1982
-5.4 C (22.3 F)
1983
-6.7 C (19.9 F)
1984
-1.6 C (29.1 F)
1985
-8.0 C (17.6 F)
1986
-2.7 C (27.1 F)
1987
-6.9 C (19.6 F)
1988
-4.0 C (24.8 F)
1989
-2.8 C (27.0 F)
1990
-1.3 C (29.7 F)
1991
-4.5 C (23.9 F)
1992
-4.1 C (24.6 F)
1993
-3.2 C (26.2 F)
1994
-1.2 C (29.8 F)
1995
-1.5 C (29.3 F)
1996
-1.6 C (29.1 F)
1997
-4.2 C (24.4 F)
1998
-0.8 C (30.6 F)
1999
-1.2 C (29.8 F)
2000
-5.2 C (22.6 F)
2001
-2.0 C (28.4 F)
2002
-3.2 C (26.2 F)
2003
-3.5 C (25.7 F)
2004
-6.4 C (20.5 F)
2007
6.0 C (42.8 F)
Wettest day (Rx1day)
The wettest day of the year at Istanbul, 1929 to 2007. The record is 88.0 mm (3.5 in) in 1962, marked on the chart; the median year is 46.0 mm (1.8 in).
Wettest day (Rx1day) at Istanbul by year
Year
Wettest day (Rx1day)
1929
31.0 mm (1.2 in)
1930
55.0 mm (2.2 in)
1931
48.0 mm (1.9 in)
1932
45.0 mm (1.8 in)
1933
46.0 mm (1.8 in)
1934
73.0 mm (2.9 in)
1935
39.0 mm (1.5 in)
1936
48.0 mm (1.9 in)
1937
42.0 mm (1.7 in)
1938
68.0 mm (2.7 in)
1939
52.0 mm (2.0 in)
1940
47.0 mm (1.9 in)
1941
48.0 mm (1.9 in)
1942
49.0 mm (1.9 in)
1943
54.0 mm (2.1 in)
1944
25.0 mm (1.0 in)
1945
43.0 mm (1.7 in)
1946
37.0 mm (1.5 in)
1947
46.0 mm (1.8 in)
1948
58.0 mm (2.3 in)
1949
72.0 mm (2.8 in)
1950
28.0 mm (1.1 in)
1951
66.0 mm (2.6 in)
1952
36.0 mm (1.4 in)
1953
58.0 mm (2.3 in)
1954
34.0 mm (1.3 in)
1955
76.0 mm (3.0 in)
1956
29.0 mm (1.1 in)
1957
34.0 mm (1.3 in)
1958
52.0 mm (2.0 in)
1959
61.0 mm (2.4 in)
1960
36.0 mm (1.4 in)
1961
48.0 mm (1.9 in)
1962
88.0 mm (3.5 in)
1963
68.0 mm (2.7 in)
1964
49.0 mm (1.9 in)
1965
55.0 mm (2.2 in)
1966
45.0 mm (1.8 in)
1967
21.0 mm (0.8 in)
1968
66.0 mm (2.6 in)
1969
27.0 mm (1.1 in)
1970
41.0 mm (1.6 in)
1971
45.0 mm (1.8 in)
1972
38.0 mm (1.5 in)
1973
42.0 mm (1.7 in)
1974
72.0 mm (2.8 in)
1975
29.0 mm (1.1 in)
1976
43.0 mm (1.7 in)
1977
36.0 mm (1.4 in)
1978
81.0 mm (3.2 in)
1979
43.0 mm (1.7 in)
1980
52.0 mm (2.0 in)
1981
80.0 mm (3.1 in)
1982
34.0 mm (1.3 in)
1983
54.0 mm (2.1 in)
1984
30.0 mm (1.2 in)
1985
65.0 mm (2.6 in)
1986
36.0 mm (1.4 in)
1987
59.0 mm (2.3 in)
1988
59.0 mm (2.3 in)
1989
51.0 mm (2.0 in)
1990
35.0 mm (1.4 in)
1991
45.0 mm (1.8 in)
1992
37.0 mm (1.5 in)
1993
53.0 mm (2.1 in)
1994
32.0 mm (1.3 in)
1995
68.0 mm (2.7 in)
1996
34.0 mm (1.3 in)
1997
76.0 mm (3.0 in)
1998
60.0 mm (2.4 in)
1999
42.0 mm (1.7 in)
2000
38.0 mm (1.5 in)
2001
33.0 mm (1.3 in)
2002
62.0 mm (2.4 in)
2003
32.0 mm (1.3 in)
2004
49.0 mm (1.9 in)
2007
0.5 mm (0.02 in)
Wettest five days (Rx5day)
The wettest five days of the year at Istanbul, 1929 to 2007. The record is 162.0 mm (6.4 in) in 1938, marked on the chart; the median year is 64.0 mm (2.5 in).
Wettest five days (Rx5day) at Istanbul by year
Year
Wettest five days (Rx5day)
1929
73.0 mm (2.9 in)
1930
20.0 mm (0.8 in)
1931
36.0 mm (1.4 in)
1932
72.0 mm (2.8 in)
1933
109.0 mm (4.3 in)
1934
82.0 mm (3.2 in)
1935
58.0 mm (2.3 in)
1936
100.0 mm (3.9 in)
1937
97.0 mm (3.8 in)
1938
162.0 mm (6.4 in)
1939
110.0 mm (4.3 in)
1940
112.0 mm (4.4 in)
1941
52.0 mm (2.0 in)
1942
86.0 mm (3.4 in)
1943
64.0 mm (2.5 in)
1944
60.0 mm (2.4 in)
1945
52.0 mm (2.0 in)
1946
27.0 mm (1.1 in)
1947
45.0 mm (1.8 in)
1948
74.0 mm (2.9 in)
1949
99.0 mm (3.9 in)
1950
56.0 mm (2.2 in)
1951
86.0 mm (3.4 in)
1952
68.0 mm (2.7 in)
1953
71.0 mm (2.8 in)
1954
54.0 mm (2.1 in)
1955
134.0 mm (5.3 in)
1956
62.0 mm (2.4 in)
1957
91.0 mm (3.6 in)
1958
99.0 mm (3.9 in)
1959
52.0 mm (2.0 in)
1960
41.0 mm (1.6 in)
1961
39.0 mm (1.5 in)
1962
74.0 mm (2.9 in)
1963
109.0 mm (4.3 in)
1964
104.0 mm (4.1 in)
1965
43.0 mm (1.7 in)
1966
69.0 mm (2.7 in)
1967
37.0 mm (1.5 in)
1968
109.0 mm (4.3 in)
1969
37.0 mm (1.5 in)
1970
54.0 mm (2.1 in)
1971
54.0 mm (2.1 in)
1972
59.0 mm (2.3 in)
1973
50.0 mm (2.0 in)
1974
92.0 mm (3.6 in)
1975
73.0 mm (2.9 in)
1976
44.0 mm (1.7 in)
1977
62.0 mm (2.4 in)
1978
129.0 mm (5.1 in)
1979
63.0 mm (2.5 in)
1980
82.0 mm (3.2 in)
1981
88.0 mm (3.5 in)
1982
64.0 mm (2.5 in)
1983
54.0 mm (2.1 in)
1984
50.0 mm (2.0 in)
1985
142.0 mm (5.6 in)
1986
46.0 mm (1.8 in)
1987
61.0 mm (2.4 in)
1988
91.0 mm (3.6 in)
1989
81.0 mm (3.2 in)
1990
52.0 mm (2.0 in)
1991
73.0 mm (2.9 in)
1992
54.0 mm (2.1 in)
1993
78.0 mm (3.1 in)
1994
58.0 mm (2.3 in)
1995
65.0 mm (2.6 in)
1996
62.0 mm (2.4 in)
1997
142.0 mm (5.6 in)
1998
60.0 mm (2.4 in)
1999
49.0 mm (1.9 in)
2000
64.0 mm (2.5 in)
2001
72.0 mm (2.8 in)
2002
66.0 mm (2.6 in)
2003
58.0 mm (2.3 in)
2004
30.0 mm (1.2 in)
2007
0.3 mm (0.01 in)
Longest dry spell (CDD)
The longest dry spell of the year at Istanbul, 1929 to 2007. The record is 6 days in 2007, marked on the chart; the median year is 2 days.
Longest dry spell (CDD) at Istanbul by year
Year
Longest dry spell (CDD)
1929
2 days
1930
3 days
1931
3 days
1932
2 days
1933
3 days
1934
1 day
1935
2 days
1936
2 days
1937
1 day
1938
2 days
1939
2 days
1940
3 days
1941
2 days
1942
2 days
1943
2 days
1944
1 day
1945
2 days
1946
2 days
1947
2 days
1948
2 days
1949
2 days
1950
3 days
1951
2 days
1952
2 days
1953
2 days
1954
3 days
1955
2 days
1956
3 days
1957
1 day
1958
2 days
1959
2 days
1960
2 days
1961
2 days
1962
2 days
1963
2 days
1964
2 days
1965
3 days
1966
3 days
1967
2 days
1968
2 days
1969
2 days
1970
4 days
1971
3 days
1972
2 days
1973
2 days
1974
2 days
1975
2 days
1976
4 days
1977
3 days
1978
2 days
1979
2 days
1980
2 days
1981
3 days
1982
3 days
1983
3 days
1984
2 days
1985
2 days
1986
3 days
1987
2 days
1988
2 days
1989
4 days
1990
3 days
1991
2 days
1992
1 day
1993
2 days
1994
3 days
1995
3 days
1996
3 days
1997
2 days
1998
2 days
1999
3 days
2000
2 days
2001
1 day
2002
2 days
2003
2 days
2004
2 days
2007
6 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
56 years with a frost
Across 56 years with a frost, the median last spring frost at Istanbul falls on 19 March and the median first autumn frost on 12 December, which leaves a median of 272 days between them.
Fitted over all years, the growing season changes by +4.5 days per decade at this station.
Frost dates and growing season at Istanbul
Measure
Median, all years
Earliest period
Recent period (1961 to 2003)
Recent against earliest
Fitted trend
Last spring frost
19 March
n/a
8 March
n/a
-4.8 days per decade
First autumn frost
12 December
n/a
16 December
n/a
-0.3 days per decade
Growing days
272 days
n/a
279 days
n/a
+4.5 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.
Download the Data
Data for Istanbul standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Istanbul 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.