Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Brest. 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 Brest, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.9 C (60.6 F)
-35.5 C (-31.9 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-28.1 C (-18.6 F)
n/a
n/a
Mar
22.6 C (72.7 F)
-22.6 C (-8.7 F)
n/a
n/a
Apr
30.7 C (87.3 F)
-6.2 C (20.8 F)
n/a
n/a
May
32.1 C (89.8 F)
-4.2 C (24.4 F)
n/a
n/a
Jun
34.3 C (93.7 F)
2.1 C (35.8 F)
n/a
n/a
Jul
36.6 C (97.9 F)
5.8 C (42.4 F)
n/a
n/a
Aug
36.7 C (98.1 F)
1.3 C (34.3 F)
n/a
n/a
Sep
34.4 C (93.9 F)
-2.8 C (27.0 F)
n/a
n/a
Oct
26.4 C (79.5 F)
-9.9 C (14.2 F)
n/a
n/a
Nov
19.0 C (66.2 F)
-19.2 C (-2.6 F)
n/a
n/a
Dec
14.5 C (58.1 F)
-25.1 C (-13.2 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Brest still stand. 1998 holds the most, with 42.
Standing records at Brest by the year they were set
Year set
Standing records
1944
7
1945
15
1946
8
1947
32
1948
5
1949
21
1950
25
1951
22
1952
25
1953
10
1954
26
1955
9
1956
32
1957
9
1958
10
1959
14
1960
6
1961
19
1962
24
1963
41
1964
23
1965
26
1966
11
1967
8
1968
19
1969
25
1970
6
1971
18
1972
17
1973
17
1974
18
1975
14
1976
20
1977
26
1978
18
1979
28
1980
23
1981
23
1982
8
1983
22
1984
15
1985
9
1986
12
1987
28
1988
19
1989
26
1990
23
1991
15
1992
19
1993
34
1994
18
1995
18
1996
26
1997
20
1998
42
1999
19
2000
26
2001
20
2002
32
2003
12
2004
12
2005
15
2006
10
2007
13
2008
10
2009
7
2010
18
2011
9
2012
25
2013
12
2014
9
2015
20
2016
10
2017
8
2018
18
2019
19
2020
10
2021
16
2022
13
2023
16
2024
17
2025
14
All-Time Record Progression
5 new records
5 all-time records were set at Brest between 10 August 1992 and 15 July 2019. Each dot is a new record.
When Brest set new all-time records
Date
Kind
Detail
1992-08-10
Record high minimum temperature
Record high minimum temperature 22.1 C (71.8 F)
1999-07-07
Record high minimum temperature
Record high minimum temperature 22.7 C (72.9 F)
2001-07-16
Record high minimum temperature
Record high minimum temperature 22.8 C (73.0 F)
2015-08-09
Record high maximum temperature
Record high maximum temperature 36.7 C (98.1 F)
2019-07-15
Record daily precipitation
Record daily precipitation 99.1 mm (3.9 in)
Wettest Day of Each Month
Jul: 99.1 mm (3.9 in)
The wettest day on record for each calendar month at Brest. The most was 99.1 mm (3.9 in) on 15 July 2019.
Record daily precipitation for each month at Brest
Month
Record daily precipitation (mm)
Date
Jan
25.1 mm (1.0 in)
25 January 1986
Feb
32.2 mm (1.3 in)
22 February 1996
Mar
18.3 mm (0.7 in)
24 March 1988
Apr
60.3 mm (2.4 in)
6 April 2000
May
75.8 mm (3.0 in)
28 May 2002
Jun
43.7 mm (1.7 in)
28 June 2017
Jul
99.1 mm (3.9 in)
15 July 2019
Aug
78.0 mm (3.1 in)
2 August 2021
Sep
81.0 mm (3.2 in)
14 September 2024
Oct
37.9 mm (1.5 in)
31 October 1974
Nov
26.1 mm (1.0 in)
11 November 1945
Dec
24.9 mm (1.0 in)
11 December 2022
Period of Record Coverage
1944 to 2025
Complete yearUnder 90 percent of days
82 years of record at Brest, 1944 to 2025. 21 years have data for under 90 percent of days and are left out of rankings: 1944, 2006, 2007, 2008, 2009, 2010, 2011, 2012 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 58 complete years at Brest, 1947 to 2005. Blue stripes are years cooler than the station's own mean of 7.9 C (46.1 F); red stripes are warmer. The coolest year was 1956, at 5.9 C (42.7 F), and the warmest was 1989, at 9.7 C (49.4 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Brest as warming stripes, 1947 to 2005
Year
Annual mean temperature
Difference from the station mean
1947
7.0 C
-0.89 C
1948
8.3 C
+0.40 C
1949
8.6 C
+0.72 C
1950
8.0 C
+0.11 C
1951
8.4 C
+0.54 C
1952
7.4 C
-0.50 C
1953
8.0 C
+0.10 C
1954
7.1 C
-0.81 C
1955
7.4 C
-0.49 C
1956
5.9 C
-1.93 C
1957
8.2 C
+0.33 C
1958
7.7 C
-0.20 C
1959
8.2 C
+0.30 C
1960
7.8 C
-0.02 C
1961
8.3 C
+0.44 C
1962
6.9 C
-0.95 C
1963
6.6 C
-1.28 C
1964
7.1 C
-0.81 C
1965
6.5 C
-1.40 C
1966
8.0 C
+0.17 C
1967
8.5 C
+0.68 C
1968
7.5 C
-0.35 C
1969
6.3 C
-1.58 C
1970
7.0 C
-0.88 C
1971
8.0 C
+0.13 C
1972
7.9 C
+0.00 C
1973
7.7 C
-0.18 C
1974
8.0 C
+0.16 C
1975
9.1 C
+1.25 C
1976
6.7 C
-1.16 C
1977
8.0 C
+0.15 C
1978
6.8 C
-1.09 C
1979
7.2 C
-0.66 C
1980
6.4 C
-1.48 C
1981
8.1 C
+0.19 C
1982
8.4 C
+0.58 C
1983
9.1 C
+1.21 C
1984
8.0 C
+0.14 C
1985
6.4 C
-1.43 C
1986
7.6 C
-0.26 C
1987
6.5 C
-1.36 C
1988
8.2 C
+0.31 C
1989
9.7 C
+1.83 C
1990
9.5 C
+1.63 C
1991
8.3 C
+0.39 C
1992
8.8 C
+0.98 C
1993
7.8 C
-0.04 C
1995
8.4 C
+0.52 C
1996
7.0 C
-0.89 C
1997
7.9 C
+0.08 C
1998
8.2 C
+0.35 C
1999
9.2 C
+1.30 C
2000
9.7 C
+1.80 C
2001
8.6 C
+0.72 C
2002
9.4 C
+1.49 C
2003
8.3 C
+0.43 C
2004
8.4 C
+0.54 C
2005
8.5 C
+0.64 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1947 to 2005. In Fahrenheit: 0.4 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 58 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Brest
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.4 F (0.1 to 0.6) per decade
1947 to 2005
58
Rise
Mean daily maximum
0.17 C (0.03 to 0.31) per decade
0.3 F (0.1 to 0.6) per decade
1947 to 2005
58
Rise
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.6) per decade
1947 to 2005
58
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
1944 to 2025
Yearly extremes at Brest: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.7 C (98.1 F)
2015
32.5 C (90.5 F)
82
Coldest night (TNn)
-35.5 C (-31.9 F)
1950
-19.5 C (-3.1 F)
82
Wettest day (Rx1day)
99.1 mm (3.9 in)
2019
38.3 mm (1.5 in)
82
Wettest five days (Rx5day)
127.3 mm (5.0 in)
1973
53.6 mm (2.1 in)
81
Longest dry spell (CDD)
36 days
1976
21 days
82
Hottest day (TXx)
The hottest day of the year at Brest, 1944 to 2025. The record is 36.7 C (98.1 F) in 2015, marked on the chart; the median year is 32.5 C (90.5 F).
Hottest day (TXx) at Brest by year
Year
Hottest day (TXx)
1944
29.8 C (85.6 F)
1945
30.1 C (86.2 F)
1946
35.6 C (96.1 F)
1947
33.4 C (92.1 F)
1948
31.4 C (88.5 F)
1949
31.3 C (88.3 F)
1950
32.6 C (90.7 F)
1951
33.0 C (91.4 F)
1952
34.7 C (94.5 F)
1953
31.7 C (89.1 F)
1954
32.6 C (90.7 F)
1955
28.3 C (82.9 F)
1956
30.5 C (86.9 F)
1957
32.8 C (91.0 F)
1958
32.5 C (90.5 F)
1959
36.6 C (97.9 F)
1960
30.4 C (86.7 F)
1961
32.7 C (90.9 F)
1962
30.9 C (87.6 F)
1963
35.0 C (95.0 F)
1964
32.2 C (90.0 F)
1965
29.4 C (84.9 F)
1966
29.4 C (84.9 F)
1967
30.4 C (86.7 F)
1968
32.0 C (89.6 F)
1969
31.5 C (88.7 F)
1970
30.1 C (86.2 F)
1971
32.9 C (91.2 F)
1972
32.1 C (89.8 F)
1973
30.3 C (86.5 F)
1974
31.7 C (89.1 F)
1975
30.1 C (86.2 F)
1976
30.4 C (86.7 F)
1977
29.3 C (84.7 F)
1978
29.3 C (84.7 F)
1979
30.2 C (86.4 F)
1980
26.6 C (79.9 F)
1981
32.7 C (90.9 F)
1982
30.9 C (87.6 F)
1983
31.8 C (89.2 F)
1984
32.2 C (90.0 F)
1985
31.6 C (88.9 F)
1986
32.5 C (90.5 F)
1987
32.3 C (90.1 F)
1988
30.5 C (86.9 F)
1989
33.7 C (92.7 F)
1990
32.0 C (89.6 F)
1991
33.1 C (91.6 F)
1992
35.5 C (95.9 F)
1993
32.5 C (90.5 F)
1994
36.1 C (97.0 F)
1995
32.1 C (89.8 F)
1996
33.0 C (91.4 F)
1997
33.0 C (91.4 F)
1998
34.4 C (93.9 F)
1999
33.1 C (91.6 F)
2000
32.9 C (91.2 F)
2001
33.5 C (92.3 F)
2002
34.5 C (94.1 F)
2003
33.0 C (91.4 F)
2004
31.5 C (88.7 F)
2005
33.4 C (92.1 F)
2006
34.5 C (94.1 F)
2007
35.0 C (95.0 F)
2008
31.5 C (88.7 F)
2009
31.5 C (88.7 F)
2010
34.6 C (94.3 F)
2011
31.3 C (88.3 F)
2012
35.0 C (95.0 F)
2013
33.6 C (92.5 F)
2014
34.6 C (94.3 F)
2015
36.7 C (98.1 F)
2016
33.4 C (92.1 F)
2017
34.0 C (93.2 F)
2018
32.1 C (89.8 F)
2019
34.0 C (93.2 F)
2020
31.9 C (89.4 F)
2021
34.7 C (94.5 F)
2022
33.9 C (93.0 F)
2023
33.9 C (93.0 F)
2024
34.8 C (94.6 F)
2025
34.6 C (94.3 F)
Coldest night (TNn)
The coldest night of the year at Brest, 1944 to 2025. The record is -35.5 C (-31.9 F) in 1950, marked on the chart; the median year is -19.5 C (-3.1 F).
Coldest night (TNn) at Brest by year
Year
Coldest night (TNn)
1944
-14.8 C (5.4 F)
1945
-23.0 C (-9.4 F)
1946
-19.5 C (-3.1 F)
1947
-24.5 C (-12.1 F)
1948
-17.8 C (0.0 F)
1949
-16.0 C (3.2 F)
1950
-35.5 C (-31.9 F)
1951
-18.5 C (-1.3 F)
1952
-16.1 C (3.0 F)
1953
-16.7 C (1.9 F)
1954
-29.2 C (-20.6 F)
1955
-21.8 C (-7.2 F)
1956
-27.0 C (-16.6 F)
1957
-16.2 C (2.8 F)
1958
-21.7 C (-7.1 F)
1959
-20.1 C (-4.2 F)
1960
-21.1 C (-6.0 F)
1961
-23.1 C (-9.6 F)
1962
-22.0 C (-7.6 F)
1963
-29.2 C (-20.6 F)
1964
-22.0 C (-7.6 F)
1965
-22.2 C (-8.0 F)
1966
-21.4 C (-6.5 F)
1967
-23.5 C (-10.3 F)
1968
-25.1 C (-13.2 F)
1969
-25.1 C (-13.2 F)
1970
-28.1 C (-18.6 F)
1971
-22.3 C (-8.1 F)
1972
-28.9 C (-20.0 F)
1973
-16.1 C (3.0 F)
1974
-13.6 C (7.5 F)
1975
-14.3 C (6.3 F)
1976
-21.2 C (-6.2 F)
1977
-14.6 C (5.7 F)
1978
-23.6 C (-10.5 F)
1979
-21.3 C (-6.3 F)
1980
-20.1 C (-4.2 F)
1981
-17.9 C (-0.2 F)
1982
-17.3 C (0.9 F)
1983
-15.8 C (3.6 F)
1984
-13.5 C (7.7 F)
1985
-24.6 C (-12.3 F)
1986
-24.4 C (-11.9 F)
1987
-28.4 C (-19.1 F)
1988
-13.0 C (8.6 F)
1989
-17.5 C (0.5 F)
1990
-12.0 C (10.4 F)
1991
-21.6 C (-6.9 F)
1992
-15.1 C (4.8 F)
1993
-18.4 C (-1.1 F)
1994
-20.7 C (-5.3 F)
1995
-18.5 C (-1.3 F)
1996
-24.4 C (-11.9 F)
1997
-23.1 C (-9.6 F)
1998
-21.5 C (-6.7 F)
1999
-15.8 C (3.6 F)
2000
-20.0 C (-4.0 F)
2001
-19.5 C (-3.1 F)
2002
-22.4 C (-8.3 F)
2003
-22.3 C (-8.1 F)
2004
-16.0 C (3.2 F)
2005
-18.6 C (-1.5 F)
2006
-16.2 C (2.8 F)
2007
-12.4 C (9.7 F)
2008
-15.1 C (4.8 F)
2009
-21.2 C (-6.2 F)
2010
-20.5 C (-4.9 F)
2011
-16.2 C (2.8 F)
2012
-24.8 C (-12.6 F)
2013
-17.5 C (0.5 F)
2014
-19.2 C (-2.6 F)
2015
-10.4 C (13.3 F)
2016
-16.1 C (3.0 F)
2017
-21.3 C (-6.3 F)
2018
-14.4 C (6.1 F)
2019
-11.7 C (10.9 F)
2020
-5.5 C (22.1 F)
2021
-15.6 C (3.9 F)
2022
-14.4 C (6.1 F)
2023
-8.3 C (17.1 F)
2024
-12.9 C (8.8 F)
2025
-12.1 C (10.2 F)
Wettest day (Rx1day)
The wettest day of the year at Brest, 1944 to 2025. The record is 99.1 mm (3.9 in) in 2019, marked on the chart; the median year is 38.3 mm (1.5 in).
Wettest day (Rx1day) at Brest by year
Year
Wettest day (Rx1day)
1944
16.6 mm (0.7 in)
1945
28.2 mm (1.1 in)
1946
67.3 mm (2.6 in)
1947
22.5 mm (0.9 in)
1948
33.5 mm (1.3 in)
1949
61.3 mm (2.4 in)
1950
26.1 mm (1.0 in)
1951
38.7 mm (1.5 in)
1952
39.3 mm (1.5 in)
1953
23.3 mm (0.9 in)
1954
63.0 mm (2.5 in)
1955
36.5 mm (1.4 in)
1956
32.7 mm (1.3 in)
1957
34.0 mm (1.3 in)
1958
41.9 mm (1.6 in)
1959
24.2 mm (1.0 in)
1960
40.8 mm (1.6 in)
1961
25.2 mm (1.0 in)
1962
31.2 mm (1.2 in)
1963
39.2 mm (1.5 in)
1964
56.6 mm (2.2 in)
1965
46.4 mm (1.8 in)
1966
38.8 mm (1.5 in)
1967
27.6 mm (1.1 in)
1968
28.0 mm (1.1 in)
1969
62.3 mm (2.5 in)
1970
28.5 mm (1.1 in)
1971
38.1 mm (1.5 in)
1972
52.2 mm (2.1 in)
1973
67.5 mm (2.7 in)
1974
85.8 mm (3.4 in)
1975
37.6 mm (1.5 in)
1976
51.7 mm (2.0 in)
1977
53.1 mm (2.1 in)
1978
27.9 mm (1.1 in)
1979
48.0 mm (1.9 in)
1980
40.4 mm (1.6 in)
1981
28.5 mm (1.1 in)
1982
24.6 mm (1.0 in)
1983
34.4 mm (1.4 in)
1984
40.1 mm (1.6 in)
1985
38.8 mm (1.5 in)
1986
39.8 mm (1.6 in)
1987
29.1 mm (1.1 in)
1988
52.5 mm (2.1 in)
1989
22.0 mm (0.9 in)
1990
22.4 mm (0.9 in)
1991
18.9 mm (0.7 in)
1992
50.0 mm (2.0 in)
1993
40.3 mm (1.6 in)
1994
27.8 mm (1.1 in)
1995
55.2 mm (2.2 in)
1996
32.2 mm (1.3 in)
1997
33.2 mm (1.3 in)
1998
28.3 mm (1.1 in)
1999
48.8 mm (1.9 in)
2000
60.3 mm (2.4 in)
2001
34.1 mm (1.3 in)
2002
75.8 mm (3.0 in)
2003
14.3 mm (0.6 in)
2004
45.0 mm (1.8 in)
2005
29.1 mm (1.1 in)
2006
74.0 mm (2.9 in)
2007
38.4 mm (1.5 in)
2008
34.0 mm (1.3 in)
2009
24.6 mm (1.0 in)
2010
65.0 mm (2.6 in)
2011
27.9 mm (1.1 in)
2012
38.9 mm (1.5 in)
2013
68.1 mm (2.7 in)
2014
36.1 mm (1.4 in)
2015
50.0 mm (2.0 in)
2016
38.1 mm (1.5 in)
2017
43.7 mm (1.7 in)
2018
68.1 mm (2.7 in)
2019
99.1 mm (3.9 in)
2020
30.0 mm (1.2 in)
2021
78.0 mm (3.1 in)
2022
33.0 mm (1.3 in)
2023
26.9 mm (1.1 in)
2024
81.0 mm (3.2 in)
2025
33.0 mm (1.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Brest, 1944 to 2025. The record is 127.3 mm (5.0 in) in 1973, marked on the chart; the median year is 53.6 mm (2.1 in).
Wettest five days (Rx5day) at Brest by year
Year
Wettest five days (Rx5day)
1944
22.2 mm (0.9 in)
1945
51.8 mm (2.0 in)
1946
74.5 mm (2.9 in)
1947
56.8 mm (2.2 in)
1948
74.0 mm (2.9 in)
1949
78.5 mm (3.1 in)
1950
68.9 mm (2.7 in)
1951
62.9 mm (2.5 in)
1952
60.1 mm (2.4 in)
1953
52.1 mm (2.1 in)
1954
80.9 mm (3.2 in)
1955
81.7 mm (3.2 in)
1956
62.8 mm (2.5 in)
1957
60.1 mm (2.4 in)
1958
73.7 mm (2.9 in)
1959
59.0 mm (2.3 in)
1960
59.8 mm (2.4 in)
1961
42.3 mm (1.7 in)
1962
45.2 mm (1.8 in)
1963
48.6 mm (1.9 in)
1964
65.3 mm (2.6 in)
1965
58.3 mm (2.3 in)
1966
64.8 mm (2.6 in)
1967
48.1 mm (1.9 in)
1968
51.7 mm (2.0 in)
1969
73.0 mm (2.9 in)
1970
59.2 mm (2.3 in)
1971
48.7 mm (1.9 in)
1972
81.1 mm (3.2 in)
1973
127.3 mm (5.0 in)
1974
104.2 mm (4.1 in)
1975
75.0 mm (3.0 in)
1976
59.0 mm (2.3 in)
1977
116.7 mm (4.6 in)
1978
45.2 mm (1.8 in)
1979
77.6 mm (3.1 in)
1980
55.5 mm (2.2 in)
1981
55.4 mm (2.2 in)
1982
29.8 mm (1.2 in)
1983
45.9 mm (1.8 in)
1984
51.8 mm (2.0 in)
1985
51.2 mm (2.0 in)
1986
53.6 mm (2.1 in)
1987
32.0 mm (1.3 in)
1988
105.8 mm (4.2 in)
1989
31.6 mm (1.2 in)
1990
44.3 mm (1.7 in)
1991
32.6 mm (1.3 in)
1992
88.9 mm (3.5 in)
1993
49.9 mm (2.0 in)
1994
43.5 mm (1.7 in)
1995
63.3 mm (2.5 in)
1996
53.4 mm (2.1 in)
1997
70.3 mm (2.8 in)
1998
40.9 mm (1.6 in)
1999
76.6 mm (3.0 in)
2000
68.6 mm (2.7 in)
2001
73.5 mm (2.9 in)
2002
97.3 mm (3.8 in)
2003
31.9 mm (1.3 in)
2004
59.1 mm (2.3 in)
2005
47.8 mm (1.9 in)
2006
116.6 mm (4.6 in)
2007
78.4 mm (3.1 in)
2008
68.3 mm (2.7 in)
2009
38.1 mm (1.5 in)
2010
35.1 mm (1.4 in)
2011
5.6 mm (0.22 in)
2012
21.8 mm (0.9 in)
2013
40.5 mm (1.6 in)
2014
27.2 mm (1.1 in)
2015
25.2 mm (1.0 in)
2016
21.6 mm (0.9 in)
2017
27.4 mm (1.1 in)
2018
25.2 mm (1.0 in)
2019
27.9 mm (1.1 in)
2020
21.1 mm (0.8 in)
2021
12.5 mm (0.5 in)
2022
26.4 mm (1.0 in)
2023
18.3 mm (0.7 in)
2024
34.0 mm (1.3 in)
2025
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Brest, 1944 to 2025. The record is 36 days in 1976, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Brest by year
Year
Longest dry spell (CDD)
1944
20 days
1945
22 days
1946
21 days
1947
25 days
1948
29 days
1949
20 days
1950
23 days
1951
31 days
1952
21 days
1953
29 days
1954
22 days
1955
20 days
1956
22 days
1957
33 days
1958
14 days
1959
25 days
1960
16 days
1961
28 days
1962
21 days
1963
15 days
1964
24 days
1965
26 days
1966
18 days
1967
24 days
1968
23 days
1969
20 days
1970
17 days
1971
21 days
1972
16 days
1973
15 days
1974
21 days
1975
31 days
1976
36 days
1977
27 days
1978
25 days
1979
21 days
1980
20 days
1981
17 days
1982
34 days
1983
28 days
1984
26 days
1985
15 days
1986
28 days
1987
24 days
1988
17 days
1989
26 days
1990
23 days
1991
19 days
1992
20 days
1993
26 days
1994
20 days
1995
23 days
1996
22 days
1997
35 days
1998
16 days
1999
19 days
2000
30 days
2001
12 days
2002
26 days
2003
21 days
2004
17 days
2005
33 days
2006
24 days
2007
17 days
2008
19 days
2009
25 days
2010
2 days
2011
4 days
2012
2 days
2013
3 days
2014
2 days
2015
2 days
2016
3 days
2017
2 days
2018
5 days
2019
3 days
2020
2 days
2021
2 days
2022
3 days
2023
3 days
2024
3 days
2025
2 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
58 years with a frost
Across 58 years with a frost, the median last spring frost at Brest falls on 25 April and the median first autumn frost on 10 October, which leaves a median of 166 days between them.
Fitted over all years, the growing season changes by +0.6 days per decade at this station.
Frost dates and growing season at Brest
Measure
Median, all years
Earliest period
Recent period (1975 to 2005)
Recent against earliest
Fitted trend
Last spring frost
25 April
n/a
25 April
n/a
-0.1 days per decade
First autumn frost
10 October
n/a
13 October
n/a
+0.5 days per decade
Growing days
166 days
n/a
167 days
n/a
+0.6 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
64 years, 1945 to 2008
A day with at least 37.2 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 92.2 mm (3.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Brest: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
37.2 mm (1.5 in)
5 years
50.8 mm (2.0 in)
10 years
60.3 mm (2.4 in)
25 years
72.7 mm (2.9 in)
50 years
82.3 mm (3.2 in)
100 years
92.2 mm (3.6 in)
Longer than the 64 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, 64 years of values from 1945 to 2008.
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: 85.8 mm (3.4 in) in 1974; 75.8 mm (3.0 in) in 2002; 74.0 mm (2.9 in) in 2006.
Download the Data
Data for Brest standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Brest 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.