Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Jomala Jomalaby. The lines show the 2026 daily maximum and minimum. 3 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Jomala Jomalaby, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.8 C (51.4 F)
-32.0 C (-25.6 F)
3.7 C (38.7 F)
-18.8 C (-1.8 F)
Feb
11.4 C (52.5 F)
-33.1 C (-27.6 F)
5.2 C (41.4 F)
-21.7 C (-7.1 F)
Mar
17.4 C (63.3 F)
-23.2 C (-9.8 F)
10.1 C (50.2 F)
-4.1 C (24.6 F)
Apr
23.1 C (73.6 F)
-13.2 C (8.2 F)
15.9 C (60.6 F)
-4.8 C (23.4 F)
May
27.4 C (81.3 F)
-5.5 C (22.1 F)
22.4 C (72.3 F)
-3.2 C (26.2 F)
Jun
29.3 C (84.7 F)
-1.0 C (30.2 F)
26.2 C (79.2 F)
7.3 C (45.1 F)
Jul
31.6 C (88.9 F)
2.5 C (36.5 F)
25.8 C (78.4 F)
5.9 C (42.6 F)
Aug
30.0 C (86.0 F)
1.0 C (33.8 F)
26.4 C (79.5 F)
4.6 C (40.3 F)
Sep
25.3 C (77.5 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
19.1 C (66.4 F)
-11.0 C (12.2 F)
n/a
n/a
Nov
15.7 C (60.3 F)
-18.9 C (-2.0 F)
n/a
n/a
Dec
11.0 C (51.8 F)
-30.6 C (-23.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Jomala Jomalaby still stand. 1978 holds the most, with 59.
Standing records at Jomala Jomalaby by the year they were set
Year set
Standing records
1972
11
1973
36
1974
15
1975
22
1976
26
1977
44
1978
59
1979
26
1980
29
1981
30
1982
17
1983
16
1984
22
1985
40
1986
28
1987
59
1988
21
1989
31
1990
31
1991
11
1992
20
1993
22
1994
18
1995
19
1996
17
1997
36
1998
38
1999
17
2000
31
2001
18
2002
45
2003
30
2004
12
2005
18
2006
36
2007
20
2008
15
2009
15
2010
32
2011
22
2012
17
2013
22
2014
36
2015
25
2016
15
2017
16
2018
38
2019
31
2020
49
2021
31
2022
31
2023
24
2024
33
2025
34
2026
7
All-Time Record Progression
6 new records
6 all-time records were set at Jomala Jomalaby between 4 January 2003 and 28 July 2019. Each dot is a new record.
When Jomala Jomalaby set new all-time records
Date
Kind
Detail
2003-01-04
Record low maximum temperature
Record low maximum temperature -20.0 C (-4.0 F)
2014-08-04
Record high minimum temperature
Record high minimum temperature 21.5 C (70.7 F)
2018-07-16
Record high maximum temperature
Record high maximum temperature 30.8 C (87.4 F)
2018-07-17
Record high maximum temperature
Record high maximum temperature 31.2 C (88.2 F)
2018-07-29
Record high minimum temperature
Record high minimum temperature 22.5 C (72.5 F)
2019-07-28
Record high maximum temperature
Record high maximum temperature 31.6 C (88.9 F)
Wettest Day of Each Month
Jun: 56.5 mm (2.2 in)
The wettest day on record for each calendar month at Jomala Jomalaby. The most was 56.5 mm (2.2 in) on 23 June 1999.
Record daily precipitation for each month at Jomala Jomalaby
Month
Record daily precipitation (mm)
Date
Jan
30.9 mm (1.2 in)
29 January 2022
Feb
36.8 mm (1.4 in)
16 February 2024
Mar
26.8 mm (1.1 in)
21 March 1983
Apr
21.5 mm (0.8 in)
25 April 2017
May
42.9 mm (1.7 in)
13 May 2011
Jun
56.5 mm (2.2 in)
23 June 1999
Jul
46.8 mm (1.8 in)
17 July 1984
Aug
52.9 mm (2.1 in)
24 August 1989
Sep
52.6 mm (2.1 in)
6 September 2015
Oct
51.0 mm (2.0 in)
31 October 2001
Nov
34.2 mm (1.3 in)
7 November 1984
Dec
25.0 mm (1.0 in)
22 December 2004
Period of Record Coverage
1972 to 2026
Complete yearUnder 90 percent of days
55 years of record at Jomala Jomalaby, 1972 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 53 complete years at Jomala Jomalaby, 1972 to 2025. Blue stripes are years cooler than the station's own mean of 6.1 C (43.0 F); red stripes are warmer. The coolest year was 1985, at 3.2 C (37.7 F), and the warmest was 2020, at 8.3 C (46.9 F). The strongest colour marks a difference of 3.0 C (5.4 F).
Annual mean temperature at Jomala Jomalaby as warming stripes, 1972 to 2025
Year
Annual mean temperature
Difference from the station mean
1972
6.0 C
-0.12 C
1973
5.8 C
-0.31 C
1974
6.4 C
+0.30 C
1975
6.8 C
+0.69 C
1976
4.4 C
-1.69 C
1977
5.0 C
-1.11 C
1978
4.1 C
-2.06 C
1979
4.5 C
-1.61 C
1980
4.6 C
-1.51 C
1981
4.8 C
-1.36 C
1982
5.5 C
-0.65 C
1983
5.9 C
-0.20 C
1984
6.1 C
-0.03 C
1985
3.2 C
-2.94 C
1986
4.8 C
-1.28 C
1987
3.7 C
-2.45 C
1988
5.8 C
-0.30 C
1989
7.0 C
+0.87 C
1990
7.0 C
+0.91 C
1991
6.3 C
+0.16 C
1992
6.6 C
+0.50 C
1993
5.8 C
-0.37 C
1994
5.5 C
-0.58 C
1995
6.0 C
-0.08 C
1996
4.9 C
-1.23 C
1997
6.6 C
+0.46 C
1998
5.7 C
-0.41 C
1999
6.6 C
+0.43 C
2000
7.1 C
+0.99 C
2001
6.3 C
+0.22 C
2002
6.6 C
+0.50 C
2003
6.2 C
+0.07 C
2004
6.4 C
+0.29 C
2005
6.5 C
+0.34 C
2006
6.8 C
+0.70 C
2007
6.8 C
+0.72 C
2008
7.2 C
+1.09 C
2009
6.2 C
+0.10 C
2010
4.6 C
-1.54 C
2011
6.9 C
+0.73 C
2012
5.9 C
-0.24 C
2013
6.5 C
+0.37 C
2014
7.4 C
+1.24 C
2016
6.7 C
+0.62 C
2017
6.6 C
+0.52 C
2018
7.0 C
+0.88 C
2019
7.2 C
+1.09 C
2020
8.3 C
+2.16 C
2021
6.7 C
+0.61 C
2022
7.2 C
+1.10 C
2023
6.5 C
+0.37 C
2024
7.3 C
+1.19 C
2025
7.8 C
+1.71 C
The annual mean temperature here has risen by 0.4 C (0.3 to 0.6) per decade over 1972 to 2025. In Fahrenheit: 0.8 F (0.5 to 1.0) per decade. The slope is a straight line fitted to 53 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Jomala Jomalaby
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.4 C (0.3 to 0.6) per decade
0.8 F (0.5 to 1.0) per decade
1972 to 2025
53
Rise
Mean daily maximum
0.5 C (0.3 to 0.6) per decade
0.8 F (0.6 to 1.1) per decade
1972 to 2025
53
Rise
Mean daily minimum
0.4 C (0.2 to 0.5) per decade
0.7 F (0.4 to 1.0) per decade
1972 to 2025
53
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
1971 to 2026
Yearly extremes at Jomala Jomalaby: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
31.6 C (88.9 F)
2019
27.7 C (81.9 F)
55
Coldest night (TNn)
-33.1 C (-27.6 F)
1979
-20.8 C (-5.4 F)
55
Wettest day (Rx1day)
56.5 mm (2.2 in)
1999
32.1 mm (1.3 in)
56
Wettest five days (Rx5day)
97.3 mm (3.8 in)
2013
51.6 mm (2.0 in)
56
Longest dry spell (CDD)
54 days
2003
23 days
56
Hottest day (TXx)
The hottest day of the year at Jomala Jomalaby, 1971 to 2026. The record is 31.6 C (88.9 F) in 2019, marked on the chart; the median year is 27.7 C (81.9 F).
Hottest day (TXx) at Jomala Jomalaby by year
Year
Hottest day (TXx)
1971
n/a
1972
28.8 C (83.8 F)
1973
28.3 C (82.9 F)
1974
24.6 C (76.3 F)
1975
30.0 C (86.0 F)
1976
26.0 C (78.8 F)
1977
27.8 C (82.0 F)
1978
25.7 C (78.3 F)
1979
25.6 C (78.1 F)
1980
27.9 C (82.2 F)
1981
23.7 C (74.7 F)
1982
27.7 C (81.9 F)
1983
29.2 C (84.6 F)
1984
25.2 C (77.4 F)
1985
24.9 C (76.8 F)
1986
27.2 C (81.0 F)
1987
26.0 C (78.8 F)
1988
28.5 C (83.3 F)
1989
28.2 C (82.8 F)
1990
24.2 C (75.6 F)
1991
26.6 C (79.9 F)
1992
24.7 C (76.5 F)
1993
23.6 C (74.5 F)
1994
29.9 C (85.8 F)
1995
27.5 C (81.5 F)
1996
25.9 C (78.6 F)
1997
28.7 C (83.7 F)
1998
22.6 C (72.7 F)
1999
29.2 C (84.6 F)
2000
22.6 C (72.7 F)
2001
28.0 C (82.4 F)
2002
28.0 C (82.4 F)
2003
30.0 C (86.0 F)
2004
29.2 C (84.6 F)
2005
28.4 C (83.1 F)
2006
28.1 C (82.6 F)
2007
26.3 C (79.3 F)
2008
28.4 C (83.1 F)
2009
27.2 C (81.0 F)
2010
30.0 C (86.0 F)
2011
28.0 C (82.4 F)
2012
24.5 C (76.1 F)
2013
26.4 C (79.5 F)
2014
29.6 C (85.3 F)
2015
26.7 C (80.1 F)
2016
25.0 C (77.0 F)
2017
25.1 C (77.2 F)
2018
31.2 C (88.2 F)
2019
31.6 C (88.9 F)
2020
29.1 C (84.4 F)
2021
29.5 C (85.1 F)
2022
29.3 C (84.7 F)
2023
26.6 C (79.9 F)
2024
27.2 C (81.0 F)
2025
28.7 C (83.7 F)
2026
26.4 C (79.5 F)
Coldest night (TNn)
The coldest night of the year at Jomala Jomalaby, 1971 to 2026. The record is -33.1 C (-27.6 F) in 1979, marked on the chart; the median year is -20.8 C (-5.4 F).
Coldest night (TNn) at Jomala Jomalaby by year
Year
Coldest night (TNn)
1971
n/a
1972
-17.3 C (0.9 F)
1973
-22.2 C (-8.0 F)
1974
-12.3 C (9.9 F)
1975
-13.4 C (7.9 F)
1976
-20.5 C (-4.9 F)
1977
-26.8 C (-16.2 F)
1978
-30.6 C (-23.1 F)
1979
-33.1 C (-27.6 F)
1980
-28.3 C (-18.9 F)
1981
-23.2 C (-9.8 F)
1982
-22.6 C (-8.7 F)
1983
-17.6 C (0.3 F)
1984
-17.7 C (0.1 F)
1985
-30.5 C (-22.9 F)
1986
-25.5 C (-13.9 F)
1987
-32.0 C (-25.6 F)
1988
-16.2 C (2.8 F)
1989
-24.1 C (-11.4 F)
1990
-12.7 C (9.1 F)
1991
-13.5 C (7.7 F)
1992
-11.7 C (10.9 F)
1993
-16.5 C (2.3 F)
1994
-24.1 C (-11.4 F)
1995
-19.2 C (-2.6 F)
1996
-24.3 C (-11.7 F)
1997
-18.4 C (-1.1 F)
1998
-16.9 C (1.6 F)
1999
-22.2 C (-8.0 F)
2000
-14.2 C (6.4 F)
2001
-20.9 C (-5.6 F)
2002
-22.6 C (-8.7 F)
2003
-29.8 C (-21.6 F)
2004
-17.0 C (1.4 F)
2005
-22.3 C (-8.1 F)
2006
-22.5 C (-8.5 F)
2007
-24.5 C (-12.1 F)
2008
-11.1 C (12.0 F)
2009
-16.4 C (2.5 F)
2010
-24.1 C (-11.4 F)
2011
-29.0 C (-20.2 F)
2012
-22.7 C (-8.9 F)
2013
-25.0 C (-13.0 F)
2014
-15.0 C (5.0 F)
2015
-8.5 C (16.7 F)
2016
-22.3 C (-8.1 F)
2017
-15.6 C (3.9 F)
2018
-18.7 C (-1.7 F)
2019
-15.8 C (3.6 F)
2020
-10.9 C (12.4 F)
2021
-21.4 C (-6.5 F)
2022
-16.5 C (2.3 F)
2023
-18.0 C (-0.4 F)
2024
-20.8 C (-5.4 F)
2025
-12.6 C (9.3 F)
2026
-21.7 C (-7.1 F)
Wettest day (Rx1day)
The wettest day of the year at Jomala Jomalaby, 1971 to 2026. The record is 56.5 mm (2.2 in) in 1999, marked on the chart; the median year is 32.1 mm (1.3 in).
Wettest day (Rx1day) at Jomala Jomalaby by year
Year
Wettest day (Rx1day)
1971
20.0 mm (0.8 in)
1972
25.6 mm (1.0 in)
1973
30.8 mm (1.2 in)
1974
37.2 mm (1.5 in)
1975
24.0 mm (0.9 in)
1976
32.5 mm (1.3 in)
1977
35.3 mm (1.4 in)
1978
25.0 mm (1.0 in)
1979
41.2 mm (1.6 in)
1980
22.9 mm (0.9 in)
1981
34.8 mm (1.4 in)
1982
22.9 mm (0.9 in)
1983
32.2 mm (1.3 in)
1984
46.8 mm (1.8 in)
1985
25.1 mm (1.0 in)
1986
33.0 mm (1.3 in)
1987
20.5 mm (0.8 in)
1988
50.1 mm (2.0 in)
1989
52.9 mm (2.1 in)
1990
48.5 mm (1.9 in)
1991
43.3 mm (1.7 in)
1992
41.2 mm (1.6 in)
1993
29.0 mm (1.1 in)
1994
36.4 mm (1.4 in)
1995
23.1 mm (0.9 in)
1996
26.6 mm (1.0 in)
1997
39.5 mm (1.6 in)
1998
24.0 mm (0.9 in)
1999
56.5 mm (2.2 in)
2000
22.9 mm (0.9 in)
2001
51.0 mm (2.0 in)
2002
28.6 mm (1.1 in)
2003
30.9 mm (1.2 in)
2004
25.0 mm (1.0 in)
2005
33.3 mm (1.3 in)
2006
21.4 mm (0.8 in)
2007
40.0 mm (1.6 in)
2008
38.7 mm (1.5 in)
2009
43.9 mm (1.7 in)
2010
45.6 mm (1.8 in)
2011
42.9 mm (1.7 in)
2012
39.2 mm (1.5 in)
2013
42.1 mm (1.7 in)
2014
28.5 mm (1.1 in)
2015
52.6 mm (2.1 in)
2016
27.8 mm (1.1 in)
2017
38.0 mm (1.5 in)
2018
18.1 mm (0.7 in)
2019
31.9 mm (1.3 in)
2020
22.3 mm (0.9 in)
2021
27.2 mm (1.1 in)
2022
30.9 mm (1.2 in)
2023
24.3 mm (1.0 in)
2024
45.1 mm (1.8 in)
2025
23.9 mm (0.9 in)
2026
25.3 mm (1.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Jomala Jomalaby, 1971 to 2026. The record is 97.3 mm (3.8 in) in 2013, marked on the chart; the median year is 51.6 mm (2.0 in).
Wettest five days (Rx5day) at Jomala Jomalaby by year
Year
Wettest five days (Rx5day)
1971
43.6 mm (1.7 in)
1972
66.6 mm (2.6 in)
1973
40.7 mm (1.6 in)
1974
68.2 mm (2.7 in)
1975
37.2 mm (1.5 in)
1976
37.7 mm (1.5 in)
1977
72.8 mm (2.9 in)
1978
44.8 mm (1.8 in)
1979
95.0 mm (3.7 in)
1980
46.4 mm (1.8 in)
1981
50.3 mm (2.0 in)
1982
42.7 mm (1.7 in)
1983
49.6 mm (2.0 in)
1984
58.0 mm (2.3 in)
1985
46.7 mm (1.8 in)
1986
59.8 mm (2.4 in)
1987
41.5 mm (1.6 in)
1988
90.0 mm (3.5 in)
1989
68.9 mm (2.7 in)
1990
62.3 mm (2.5 in)
1991
64.1 mm (2.5 in)
1992
77.0 mm (3.0 in)
1993
42.7 mm (1.7 in)
1994
63.0 mm (2.5 in)
1995
35.6 mm (1.4 in)
1996
46.1 mm (1.8 in)
1997
78.9 mm (3.1 in)
1998
42.0 mm (1.7 in)
1999
65.2 mm (2.6 in)
2000
57.6 mm (2.3 in)
2001
73.5 mm (2.9 in)
2002
36.7 mm (1.4 in)
2003
40.0 mm (1.6 in)
2004
36.4 mm (1.4 in)
2005
48.1 mm (1.9 in)
2006
44.6 mm (1.8 in)
2007
61.1 mm (2.4 in)
2008
65.8 mm (2.6 in)
2009
72.0 mm (2.8 in)
2010
52.8 mm (2.1 in)
2011
47.5 mm (1.9 in)
2012
51.7 mm (2.0 in)
2013
97.3 mm (3.8 in)
2014
51.4 mm (2.0 in)
2015
73.7 mm (2.9 in)
2016
41.1 mm (1.6 in)
2017
57.7 mm (2.3 in)
2018
32.3 mm (1.3 in)
2019
63.9 mm (2.5 in)
2020
43.3 mm (1.7 in)
2021
37.6 mm (1.5 in)
2022
46.9 mm (1.8 in)
2023
72.4 mm (2.9 in)
2024
80.3 mm (3.2 in)
2025
48.8 mm (1.9 in)
2026
53.3 mm (2.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Jomala Jomalaby, 1971 to 2026. The record is 54 days in 2003, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Jomala Jomalaby by year
Year
Longest dry spell (CDD)
1971
12 days
1972
24 days
1973
18 days
1974
20 days
1975
14 days
1976
24 days
1977
17 days
1978
21 days
1979
23 days
1980
23 days
1981
28 days
1982
23 days
1983
28 days
1984
21 days
1985
31 days
1986
28 days
1987
35 days
1988
24 days
1989
19 days
1990
23 days
1991
22 days
1992
30 days
1993
25 days
1994
25 days
1995
15 days
1996
28 days
1997
14 days
1998
23 days
1999
21 days
2000
23 days
2001
29 days
2002
42 days
2003
54 days
2004
18 days
2005
21 days
2006
26 days
2007
20 days
2008
23 days
2009
24 days
2010
35 days
2011
21 days
2012
15 days
2013
33 days
2014
26 days
2015
23 days
2016
22 days
2017
37 days
2018
38 days
2019
22 days
2020
16 days
2021
22 days
2022
38 days
2023
17 days
2024
26 days
2025
33 days
2026
37 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
53 years with a frost
Across 53 years with a frost, the median last spring frost at Jomala Jomalaby falls on 18 May and the median first autumn frost on 2 October, which leaves a median of 134 days between them.
Fitted over all years, the growing season changes by +3.8 days per decade at this station.
Frost dates and growing season at Jomala Jomalaby
Measure
Median, all years
Earliest period
Recent period (1995 to 2025)
Recent against earliest
Fitted trend
Last spring frost
18 May
n/a
18 May
n/a
-1.4 days per decade
First autumn frost
2 October
n/a
4 October
n/a
+2.4 days per decade
Growing days
134 days
n/a
136 days
n/a
+3.8 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
53 years, 1972 to 2025
A day with at least 33.0 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 63.4 mm (2.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Jomala Jomalaby: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
33.0 mm (1.3 in)
5 years
42.2 mm (1.7 in)
10 years
47.8 mm (1.9 in)
25 years
54.5 mm (2.1 in)
50 years
59.1 mm (2.3 in)
100 years
63.4 mm (2.5 in)
Longer than the 53 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, 53 years of values from 1972 to 2025.
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: 56.5 mm (2.2 in) in 1999; 52.9 mm (2.1 in) in 1989; 52.6 mm (2.1 in) in 2015.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2010 to 2025 against 1961 to 1990
Over 2010 to 2025, Jomala Jomalaby had a mean temperature of 6.8 C (44.3 F) and 625.2 mm (24.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Akershus (Sweden, 405 km away), Holma (Sweden, 273 km away) and Ronneby-Bredakra (Sweden, 516 km away).
Climate twins of Jomala Jomalaby: stations whose 1961 to 1990 climate is closest to its 2010 to 2025 climate
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Data for Jomala Jomalaby standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Jomala Jomalaby 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.