Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Reykjavik. The lines show the 2026 daily maximum and minimum. 1 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Reykjavik, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.7 C (51.3 F)
-19.7 C (-3.5 F)
8.6 C (47.5 F)
-7.7 C (18.1 F)
Feb
10.2 C (50.4 F)
-17.6 C (0.3 F)
7.4 C (45.3 F)
-11.7 C (10.9 F)
Mar
13.0 C (55.4 F)
-16.4 C (2.5 F)
7.4 C (45.3 F)
-8.0 C (17.6 F)
Apr
17.1 C (62.8 F)
-16.4 C (2.5 F)
13.2 C (55.8 F)
-6.3 C (20.7 F)
May
20.6 C (69.1 F)
-7.7 C (18.1 F)
16.2 C (61.2 F)
-2.4 C (27.7 F)
Jun
22.4 C (72.3 F)
-0.7 C (30.7 F)
18.9 C (66.0 F)
5.1 C (41.2 F)
Jul
25.7 C (78.3 F)
1.4 C (34.5 F)
19.2 C (66.6 F)
5.7 C (42.3 F)
Aug
24.8 C (76.6 F)
-0.4 C (31.3 F)
17.5 C (63.5 F)
4.8 C (40.6 F)
Sep
18.5 C (65.3 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
15.7 C (60.3 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
12.9 C (55.2 F)
-15.1 C (4.8 F)
n/a
n/a
Dec
12.0 C (53.6 F)
-16.8 C (1.8 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Reykjavik still stand. 2004 holds the most, with 42.
Standing records at Reykjavik by the year they were set
Year set
Standing records
1949
33
1950
15
1951
15
1952
7
1953
9
1954
13
1955
25
1956
21
1957
19
1958
24
1959
23
1960
18
1961
15
1962
7
1963
24
1964
34
1965
35
1966
11
1967
22
1968
37
1969
33
1970
27
1971
29
1972
12
1973
27
1974
12
1975
25
1976
12
1977
19
1978
9
1979
40
1980
18
1981
30
1982
20
1983
28
1984
10
1985
16
1986
9
1987
16
1988
16
1989
9
1990
4
1991
17
1992
26
1993
13
1994
4
1995
17
1996
14
1997
22
1998
21
1999
16
2000
11
2001
19
2002
33
2003
15
2004
42
2005
18
2006
33
2007
16
2008
11
2009
13
2010
34
2011
20
2012
9
2013
15
2014
13
2015
10
2016
7
2017
12
2018
10
2019
30
2020
12
2021
22
2022
11
2023
18
2024
16
2025
34
2026
2
All-Time Record Progression
4 new records
4 all-time records were set at Reykjavik between 31 July 1980 and 29 December 2012. Each dot is a new record.
When Reykjavik set new all-time records
Date
Kind
Detail
1980-07-31
Record high minimum temperature
Record high minimum temperature 18.2 C (64.8 F)
2004-08-11
Record high maximum temperature
Record high maximum temperature 24.8 C (76.6 F)
2008-07-30
Record high maximum temperature
Record high maximum temperature 25.7 C (78.3 F)
2012-12-29
Record daily precipitation
Record daily precipitation 54.6 mm (2.1 in)
Wettest Day of Each Month
Dec: 54.6 mm (2.1 in)
The wettest day on record for each calendar month at Reykjavik. The most was 54.6 mm (2.1 in) on 29 December 2012.
Record daily precipitation for each month at Reykjavik
Month
Record daily precipitation (mm)
Date
Jan
33.2 mm (1.3 in)
6 January 2022
Feb
40.3 mm (1.6 in)
13 February 1953
Mar
36.8 mm (1.4 in)
6 March 1974
Apr
48.2 mm (1.9 in)
1 April 1989
May
38.8 mm (1.5 in)
1 May 2011
Jun
30.6 mm (1.2 in)
29 June 1977
Jul
39.0 mm (1.5 in)
12 July 1997
Aug
42.4 mm (1.7 in)
10 August 1984
Sep
49.2 mm (1.9 in)
26 September 1959
Oct
47.8 mm (1.9 in)
2 October 2000
Nov
47.7 mm (1.9 in)
18 November 2018
Dec
54.6 mm (2.1 in)
29 December 2012
Period of Record Coverage
1949 to 2026
Complete yearUnder 90 percent of days
78 years of record at Reykjavik, 1949 to 2026. 1 years have data for under 90 percent of days and are left out of rankings: 2026.
Cooler than the station meanWarmer than the station mean
One stripe for each of 77 complete years at Reykjavik, 1949 to 2025. Blue stripes are years cooler than the station's own mean of 4.9 C (40.9 F); red stripes are warmer. The coolest year was 1979, at 3.0 C (37.4 F), and the warmest was 2025, at 6.4 C (43.4 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Reykjavik as warming stripes, 1949 to 2025
Year
Annual mean temperature
Difference from the station mean
1949
3.9 C
-1.09 C
1950
5.0 C
+0.02 C
1951
4.1 C
-0.80 C
1952
4.6 C
-0.39 C
1953
5.4 C
+0.50 C
1954
5.0 C
+0.10 C
1955
4.5 C
-0.48 C
1956
5.4 C
+0.41 C
1957
5.1 C
+0.11 C
1958
5.1 C
+0.14 C
1959
5.1 C
+0.17 C
1960
5.8 C
+0.82 C
1961
5.0 C
+0.10 C
1962
4.7 C
-0.27 C
1963
5.0 C
+0.06 C
1964
5.8 C
+0.85 C
1965
5.0 C
+0.05 C
1966
4.3 C
-0.67 C
1967
4.1 C
-0.82 C
1968
4.6 C
-0.35 C
1969
4.0 C
-0.91 C
1970
4.2 C
-0.78 C
1971
4.6 C
-0.31 C
1972
5.4 C
+0.42 C
1973
4.1 C
-0.86 C
1974
5.1 C
+0.13 C
1975
4.3 C
-0.60 C
1976
4.6 C
-0.31 C
1977
4.5 C
-0.45 C
1978
4.5 C
-0.43 C
1979
3.0 C
-1.96 C
1980
4.4 C
-0.53 C
1981
3.5 C
-1.41 C
1982
4.1 C
-0.88 C
1983
3.5 C
-1.42 C
1984
4.1 C
-0.87 C
1985
4.6 C
-0.38 C
1986
4.2 C
-0.71 C
1987
5.5 C
+0.57 C
1988
4.2 C
-0.70 C
1989
3.8 C
-1.13 C
1990
4.4 C
-0.52 C
1991
5.1 C
+0.14 C
1992
4.3 C
-0.67 C
1993
4.6 C
-0.32 C
1994
4.3 C
-0.68 C
1995
4.0 C
-0.95 C
1996
5.2 C
+0.29 C
1997
5.4 C
+0.43 C
1998
4.9 C
-0.04 C
1999
4.8 C
-0.15 C
2000
4.8 C
-0.17 C
2001
5.5 C
+0.51 C
2002
5.7 C
+0.76 C
2003
6.2 C
+1.28 C
2004
5.7 C
+0.80 C
2005
5.2 C
+0.21 C
2006
5.6 C
+0.69 C
2007
5.8 C
+0.81 C
2008
5.5 C
+0.57 C
2009
5.8 C
+0.89 C
2010
6.3 C
+1.39 C
2011
5.7 C
+0.80 C
2012
5.8 C
+0.85 C
2013
5.2 C
+0.30 C
2014
6.3 C
+1.34 C
2015
4.8 C
-0.14 C
2016
6.3 C
+1.31 C
2017
5.8 C
+0.86 C
2018
5.4 C
+0.45 C
2019
6.0 C
+1.08 C
2020
5.3 C
+0.39 C
2021
5.6 C
+0.67 C
2022
5.4 C
+0.42 C
2023
5.2 C
+0.30 C
2024
4.5 C
-0.46 C
2025
6.4 C
+1.41 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1949 to 2025. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Reykjavik
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.2) per decade
0.3 F (0.1 to 0.4) per decade
1949 to 2025
77
Rise
Mean daily maximum
0.2 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.4) per decade
1949 to 2025
77
Rise
Mean daily minimum
0.1 C (0.1 to 0.2) per decade
0.2 F (0.1 to 0.4) per decade
1949 to 2025
77
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
1949 to 2026
Yearly extremes at Reykjavik: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
25.7 C (78.3 F)
2008
19.3 C (66.7 F)
78
Coldest night (TNn)
-19.7 C (-3.5 F)
1971
-12.7 C (9.1 F)
78
Wettest day (Rx1day)
54.6 mm (2.1 in)
2012
30.0 mm (1.2 in)
78
Wettest five days (Rx5day)
85.3 mm (3.4 in)
1965
59.4 mm (2.3 in)
78
Longest dry spell (CDD)
39 days
1977
15 days
78
Hottest day (TXx)
The hottest day of the year at Reykjavik, 1949 to 2026. The record is 25.7 C (78.3 F) in 2008, marked on the chart; the median year is 19.3 C (66.7 F).
Hottest day (TXx) at Reykjavik by year
Year
Hottest day (TXx)
1949
20.4 C (68.7 F)
1950
23.2 C (73.8 F)
1951
17.6 C (63.7 F)
1952
16.3 C (61.3 F)
1953
19.1 C (66.4 F)
1954
20.7 C (69.3 F)
1955
20.5 C (68.9 F)
1956
17.8 C (64.0 F)
1957
17.0 C (62.6 F)
1958
21.0 C (69.8 F)
1959
19.3 C (66.7 F)
1960
20.6 C (69.1 F)
1961
17.4 C (63.3 F)
1962
19.1 C (66.4 F)
1963
19.3 C (66.7 F)
1964
18.3 C (64.9 F)
1965
16.9 C (62.4 F)
1966
19.7 C (67.5 F)
1967
17.0 C (62.6 F)
1968
18.5 C (65.3 F)
1969
19.9 C (67.8 F)
1970
17.1 C (62.8 F)
1971
18.2 C (64.8 F)
1972
16.3 C (61.3 F)
1973
15.6 C (60.1 F)
1974
18.8 C (65.8 F)
1975
17.3 C (63.1 F)
1976
24.3 C (75.7 F)
1977
19.5 C (67.1 F)
1978
17.7 C (63.9 F)
1979
18.6 C (65.5 F)
1980
23.7 C (74.7 F)
1981
16.4 C (61.5 F)
1982
17.6 C (63.7 F)
1983
17.5 C (63.5 F)
1984
19.5 C (67.1 F)
1985
18.7 C (65.7 F)
1986
18.2 C (64.8 F)
1987
18.0 C (64.4 F)
1988
18.8 C (65.8 F)
1989
15.6 C (60.1 F)
1990
20.4 C (68.7 F)
1991
23.2 C (73.8 F)
1992
17.5 C (63.5 F)
1993
19.7 C (67.5 F)
1994
18.3 C (64.9 F)
1995
20.5 C (68.9 F)
1996
17.4 C (63.3 F)
1997
18.3 C (64.9 F)
1998
18.4 C (65.1 F)
1999
18.9 C (66.0 F)
2000
18.6 C (65.5 F)
2001
17.2 C (63.0 F)
2002
22.4 C (72.3 F)
2003
20.0 C (68.0 F)
2004
24.8 C (76.6 F)
2005
19.4 C (66.9 F)
2006
19.2 C (66.6 F)
2007
20.5 C (68.9 F)
2008
25.7 C (78.3 F)
2009
21.1 C (70.0 F)
2010
21.2 C (70.2 F)
2011
20.0 C (68.0 F)
2012
21.3 C (70.3 F)
2013
20.2 C (68.4 F)
2014
19.7 C (67.5 F)
2015
20.7 C (69.3 F)
2016
21.3 C (70.3 F)
2017
22.5 C (72.5 F)
2018
23.5 C (74.3 F)
2019
21.1 C (70.0 F)
2020
21.4 C (70.5 F)
2021
20.9 C (69.6 F)
2022
17.9 C (64.2 F)
2023
20.6 C (69.1 F)
2024
17.4 C (63.3 F)
2025
21.8 C (71.2 F)
2026
19.2 C (66.6 F)
Coldest night (TNn)
The coldest night of the year at Reykjavik, 1949 to 2026. The record is -19.7 C (-3.5 F) in 1971, marked on the chart; the median year is -12.7 C (9.1 F).
Coldest night (TNn) at Reykjavik by year
Year
Coldest night (TNn)
1949
-15.3 C (4.5 F)
1950
-13.6 C (7.5 F)
1951
-12.9 C (8.8 F)
1952
-11.6 C (11.1 F)
1953
-11.2 C (11.8 F)
1954
-13.0 C (8.6 F)
1955
-15.0 C (5.0 F)
1956
-17.1 C (1.2 F)
1957
-12.4 C (9.7 F)
1958
-13.3 C (8.1 F)
1959
-12.7 C (9.1 F)
1960
-11.8 C (10.8 F)
1961
-16.8 C (1.8 F)
1962
-11.0 C (12.2 F)
1963
-12.5 C (9.5 F)
1964
-14.0 C (6.8 F)
1965
-13.5 C (7.7 F)
1966
-16.6 C (2.1 F)
1967
-12.0 C (10.4 F)
1968
-16.4 C (2.5 F)
1969
-17.6 C (0.3 F)
1970
-13.6 C (7.5 F)
1971
-19.7 C (-3.5 F)
1972
-10.7 C (12.7 F)
1973
-15.0 C (5.0 F)
1974
-13.8 C (7.2 F)
1975
-12.5 C (9.5 F)
1976
-13.5 C (7.7 F)
1977
-14.7 C (5.5 F)
1978
-11.0 C (12.2 F)
1979
-16.8 C (1.8 F)
1980
-14.5 C (5.9 F)
1981
-15.7 C (3.7 F)
1982
-13.3 C (8.1 F)
1983
-10.8 C (12.6 F)
1984
-13.9 C (7.0 F)
1985
-12.6 C (9.3 F)
1986
-11.1 C (12.0 F)
1987
-10.5 C (13.1 F)
1988
-14.6 C (5.7 F)
1989
-13.0 C (8.6 F)
1990
-13.3 C (8.1 F)
1991
-11.0 C (12.2 F)
1992
-13.2 C (8.2 F)
1993
-12.7 C (9.1 F)
1994
-12.1 C (10.2 F)
1995
-13.0 C (8.6 F)
1996
-10.2 C (13.6 F)
1997
-12.6 C (9.3 F)
1998
-14.9 C (5.2 F)
1999
-11.6 C (11.1 F)
2000
-11.8 C (10.8 F)
2001
-13.5 C (7.7 F)
2002
-10.8 C (12.6 F)
2003
-11.3 C (11.7 F)
2004
-15.1 C (4.8 F)
2005
-10.2 C (13.6 F)
2006
-13.6 C (7.5 F)
2007
-10.0 C (14.0 F)
2008
-14.4 C (6.1 F)
2009
-9.7 C (14.5 F)
2010
-10.8 C (12.6 F)
2011
-12.5 C (9.5 F)
2012
-7.9 C (17.8 F)
2013
-12.8 C (9.0 F)
2014
-9.7 C (14.5 F)
2015
-10.1 C (13.8 F)
2016
-10.3 C (13.5 F)
2017
-8.5 C (16.7 F)
2018
-9.0 C (15.8 F)
2019
-12.0 C (10.4 F)
2020
-10.0 C (14.0 F)
2021
-9.8 C (14.4 F)
2022
-15.2 C (4.6 F)
2023
-14.8 C (5.4 F)
2024
-14.0 C (6.8 F)
2025
-10.9 C (12.4 F)
2026
-11.7 C (10.9 F)
Wettest day (Rx1day)
The wettest day of the year at Reykjavik, 1949 to 2026. The record is 54.6 mm (2.1 in) in 2012, marked on the chart; the median year is 30.0 mm (1.2 in).
Wettest day (Rx1day) at Reykjavik by year
Year
Wettest day (Rx1day)
1949
25.1 mm (1.0 in)
1950
22.9 mm (0.9 in)
1951
18.1 mm (0.7 in)
1952
30.4 mm (1.2 in)
1953
40.3 mm (1.6 in)
1954
30.6 mm (1.2 in)
1955
21.3 mm (0.8 in)
1956
30.6 mm (1.2 in)
1957
22.2 mm (0.9 in)
1958
29.1 mm (1.1 in)
1959
49.2 mm (1.9 in)
1960
18.4 mm (0.7 in)
1961
20.1 mm (0.8 in)
1962
22.5 mm (0.9 in)
1963
28.5 mm (1.1 in)
1964
19.7 mm (0.8 in)
1965
35.7 mm (1.4 in)
1966
34.1 mm (1.3 in)
1967
44.7 mm (1.8 in)
1968
37.8 mm (1.5 in)
1969
28.6 mm (1.1 in)
1970
33.3 mm (1.3 in)
1971
23.3 mm (0.9 in)
1972
30.1 mm (1.2 in)
1973
31.6 mm (1.2 in)
1974
36.8 mm (1.4 in)
1975
23.7 mm (0.9 in)
1976
28.8 mm (1.1 in)
1977
30.6 mm (1.2 in)
1978
18.0 mm (0.7 in)
1979
22.8 mm (0.9 in)
1980
35.8 mm (1.4 in)
1981
20.5 mm (0.8 in)
1982
31.4 mm (1.2 in)
1983
33.0 mm (1.3 in)
1984
42.4 mm (1.7 in)
1985
30.1 mm (1.2 in)
1986
34.0 mm (1.3 in)
1987
32.0 mm (1.3 in)
1988
26.3 mm (1.0 in)
1989
48.2 mm (1.9 in)
1990
33.9 mm (1.3 in)
1991
24.8 mm (1.0 in)
1992
33.5 mm (1.3 in)
1993
35.2 mm (1.4 in)
1994
35.9 mm (1.4 in)
1995
28.6 mm (1.1 in)
1996
28.3 mm (1.1 in)
1997
39.0 mm (1.5 in)
1998
28.3 mm (1.1 in)
1999
27.8 mm (1.1 in)
2000
47.8 mm (1.9 in)
2001
25.7 mm (1.0 in)
2002
24.6 mm (1.0 in)
2003
19.8 mm (0.8 in)
2004
26.8 mm (1.1 in)
2005
30.1 mm (1.2 in)
2006
38.7 mm (1.5 in)
2007
33.0 mm (1.3 in)
2008
38.8 mm (1.5 in)
2009
20.1 mm (0.8 in)
2010
21.2 mm (0.8 in)
2011
38.8 mm (1.5 in)
2012
54.6 mm (2.1 in)
2013
22.1 mm (0.9 in)
2014
37.6 mm (1.5 in)
2015
29.8 mm (1.2 in)
2016
31.1 mm (1.2 in)
2017
28.6 mm (1.1 in)
2018
47.7 mm (1.9 in)
2019
32.4 mm (1.3 in)
2020
25.2 mm (1.0 in)
2021
18.6 mm (0.7 in)
2022
46.4 mm (1.8 in)
2023
25.9 mm (1.0 in)
2024
23.6 mm (0.9 in)
2025
26.6 mm (1.0 in)
2026
23.2 mm (0.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Reykjavik, 1949 to 2026. The record is 85.3 mm (3.4 in) in 1965, marked on the chart; the median year is 59.4 mm (2.3 in).
Wettest five days (Rx5day) at Reykjavik by year
Year
Wettest five days (Rx5day)
1949
50.9 mm (2.0 in)
1950
49.4 mm (1.9 in)
1951
35.4 mm (1.4 in)
1952
49.6 mm (2.0 in)
1953
76.8 mm (3.0 in)
1954
51.4 mm (2.0 in)
1955
32.4 mm (1.3 in)
1956
80.0 mm (3.1 in)
1957
44.3 mm (1.7 in)
1958
72.9 mm (2.9 in)
1959
62.2 mm (2.4 in)
1960
33.0 mm (1.3 in)
1961
51.9 mm (2.0 in)
1962
52.3 mm (2.1 in)
1963
60.3 mm (2.4 in)
1964
45.4 mm (1.8 in)
1965
85.3 mm (3.4 in)
1966
54.9 mm (2.2 in)
1967
83.5 mm (3.3 in)
1968
82.2 mm (3.2 in)
1969
66.6 mm (2.6 in)
1970
52.7 mm (2.1 in)
1971
46.9 mm (1.8 in)
1972
55.0 mm (2.2 in)
1973
60.2 mm (2.4 in)
1974
66.5 mm (2.6 in)
1975
41.9 mm (1.6 in)
1976
61.4 mm (2.4 in)
1977
34.0 mm (1.3 in)
1978
31.8 mm (1.3 in)
1979
58.5 mm (2.3 in)
1980
70.8 mm (2.8 in)
1981
34.1 mm (1.3 in)
1982
55.6 mm (2.2 in)
1983
60.0 mm (2.4 in)
1984
83.6 mm (3.3 in)
1985
54.8 mm (2.2 in)
1986
63.9 mm (2.5 in)
1987
54.2 mm (2.1 in)
1988
57.6 mm (2.3 in)
1989
72.8 mm (2.9 in)
1990
57.4 mm (2.3 in)
1991
82.2 mm (3.2 in)
1992
58.9 mm (2.3 in)
1993
82.0 mm (3.2 in)
1994
78.2 mm (3.1 in)
1995
72.6 mm (2.9 in)
1996
60.7 mm (2.4 in)
1997
49.2 mm (1.9 in)
1998
54.4 mm (2.1 in)
1999
49.0 mm (1.9 in)
2000
60.5 mm (2.4 in)
2001
47.9 mm (1.9 in)
2002
59.8 mm (2.4 in)
2003
50.5 mm (2.0 in)
2004
63.0 mm (2.5 in)
2005
67.5 mm (2.7 in)
2006
62.9 mm (2.5 in)
2007
67.9 mm (2.7 in)
2008
76.9 mm (3.0 in)
2009
44.7 mm (1.8 in)
2010
58.3 mm (2.3 in)
2011
69.9 mm (2.8 in)
2012
56.7 mm (2.2 in)
2013
61.2 mm (2.4 in)
2014
72.4 mm (2.9 in)
2015
63.0 mm (2.5 in)
2016
65.6 mm (2.6 in)
2017
77.9 mm (3.1 in)
2018
67.1 mm (2.6 in)
2019
63.1 mm (2.5 in)
2020
56.0 mm (2.2 in)
2021
46.5 mm (1.8 in)
2022
56.8 mm (2.2 in)
2023
62.0 mm (2.4 in)
2024
45.3 mm (1.8 in)
2025
64.2 mm (2.5 in)
2026
50.0 mm (2.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Reykjavik, 1949 to 2026. The record is 39 days in 1977, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Reykjavik by year
Year
Longest dry spell (CDD)
1949
15 days
1950
6 days
1951
23 days
1952
24 days
1953
13 days
1954
17 days
1955
24 days
1956
35 days
1957
21 days
1958
20 days
1959
24 days
1960
31 days
1961
11 days
1962
26 days
1963
21 days
1964
14 days
1965
28 days
1966
24 days
1967
27 days
1968
17 days
1969
15 days
1970
12 days
1971
28 days
1972
16 days
1973
16 days
1974
19 days
1975
22 days
1976
12 days
1977
39 days
1978
15 days
1979
23 days
1980
16 days
1981
29 days
1982
13 days
1983
12 days
1984
16 days
1985
20 days
1986
16 days
1987
14 days
1988
17 days
1989
20 days
1990
15 days
1991
21 days
1992
12 days
1993
25 days
1994
16 days
1995
20 days
1996
12 days
1997
15 days
1998
24 days
1999
11 days
2000
8 days
2001
8 days
2002
5 days
2003
6 days
2004
6 days
2005
7 days
2006
6 days
2007
4 days
2008
9 days
2009
5 days
2010
8 days
2011
5 days
2012
3 days
2013
6 days
2014
6 days
2015
5 days
2016
6 days
2017
5 days
2018
6 days
2019
6 days
2020
3 days
2021
5 days
2022
7 days
2023
4 days
2024
4 days
2025
9 days
2026
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
77 years with a frost
Across 77 years with a frost, the median last spring frost at Reykjavik falls on 14 May and the median first autumn frost on 3 October, which leaves a median of 142 days between them.
In 1996 to 2025 the median growing season was 149 days. That is 7 days more than in 1949 to 1978.
Fitted over all years, the growing season changes by +2.6 days per decade at this station.
Frost dates and growing season at Reykjavik
Measure
Median, all years
Earliest period (1949 to 1978)
Recent period (1996 to 2025)
Recent against earliest
Fitted trend
Last spring frost
14 May
14 May
14 May
no change
-0.9 days per decade
First autumn frost
3 October
30 September
7 October
7 days later
+1.7 days per decade
Growing days
142 days
142 days
149 days
7 days more
+2.6 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
50 years, 1949 to 1999
A day with at least 29.8 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 49.4 mm (1.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Reykjavik: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
29.8 mm (1.2 in)
5 years
36.5 mm (1.4 in)
10 years
40.3 mm (1.6 in)
25 years
44.4 mm (1.7 in)
50 years
47.1 mm (1.9 in)
100 years
49.4 mm (1.9 in)
Longer than the 50 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, 50 years of values from 1949 to 1999.
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: 49.2 mm (1.9 in) in 1959; 48.2 mm (1.9 in) in 1989; 44.7 mm (1.8 in) in 1967.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Reykjavik, at 1976 and 1993. Each is measured against neighbouring stations.
Relative to 4 neighbouring stations, the station's annual mean temperature from 1976 ran 0.3 C (0.6 F) lower than in the years before (likely change).
Relative to 4 neighbouring stations, the station's annual mean temperature from 1993 ran 0.2 C (0.4 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Reykjavik, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1976
-0.3
-0.6
likely
4
1993
+0.2
+0.4
possible
4
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 Reykjavik standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Reykjavik 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.