Kiel-Holtenau Weather Records (GME00121030)

Record envelope, standing records and threshold days for Kiel-Holtenau (GME00121030), Germany, with 92 years of record.

Key Facts for Kiel-Holtenau

Kiel-Holtenau (GME00121030) is a weather station in Germany at 54.38 latitude and 10.14 longitude, 27 m (89 ft) above sea level.
The station reports from 1935 to 2026, 92 years of record.
1,464 records set at Kiel-Holtenau still stand.
Records are tracked for tmax, tmin, prcp, snwd: an element needs 30 years of data to be eligible.
Kiel-Holtenau set a daily record high maximum temperature of 33.2 C (91.8 F) on 14 August 2026.

About the Station

Location: Germany, 54.38 latitude, 10.14 longitude.
Elevation: 27 m (89 ft).
Period of record: 1935 to 2026, 92 years.
Eligible elements: tmax, tmin, prcp, snwd.

Daily Record Envelope and 2026

16 days at or beyond a record

The band shows the record high and record low for each calendar day at Kiel-Holtenau. The lines show the 2026 daily maximum and minimum. 16 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Kiel-Holtenau, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	14.6 C (58.3 F)	-17.8 C (0.0 F)	11.1 C (52.0 F)	-8.7 C (16.3 F)
Feb	17.7 C (63.9 F)	-23.9 C (-11.0 F)	16.0 C (60.8 F)	-9.6 C (14.7 F)
Mar	21.9 C (71.4 F)	-14.4 C (6.1 F)	17.3 C (63.1 F)	-2.0 C (28.4 F)
Apr	29.0 C (84.2 F)	-6.9 C (19.6 F)	18.0 C (64.4 F)	-0.6 C (30.9 F)
May	29.3 C (84.7 F)	-3.0 C (26.6 F)	27.3 C (81.1 F)	1.5 C (34.7 F)
Jun	35.8 C (96.4 F)	1.1 C (34.0 F)	35.8 C (96.4 F)	5.4 C (41.7 F)
Jul	36.5 C (97.7 F)	5.6 C (42.1 F)	34.7 C (94.5 F)	9.1 C (48.4 F)
Aug	35.1 C (95.2 F)	4.7 C (40.5 F)	33.2 C (91.8 F)	6.8 C (44.2 F)
Sep	29.9 C (85.8 F)	1.8 C (35.2 F)	n/a	n/a
Oct	25.2 C (77.4 F)	-6.2 C (20.8 F)	n/a	n/a
Nov	19.3 C (66.7 F)	-11.6 C (11.1 F)	n/a	n/a
Dec	14.3 C (57.7 F)	-15.0 C (5.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Kiel-Holtenau still stand. 1987 holds the most, with 75.

Standing records at Kiel-Holtenau by the year they were set
Year set	Standing records
1935	17
1936	8
1937	22
1938	27
1939	22
1940	53
1941	58
1986	41
1987	75
1988	15
1989	39
1990	48
1991	25
1992	26
1993	44
1994	38
1995	43
1996	63
1997	49
1998	34
1999	24
2000	38
2001	13
2003	6
2006	23
2007	29
2008	21
2009	20
2010	42
2011	30
2012	36
2013	9
2014	43
2015	42
2016	46
2017	20
2018	51
2019	30
2020	23
2021	24
2022	30
2023	31
2024	35
2025	24
2026	27

All-Time Record Progression

3 new records

3 all-time records were set at Kiel-Holtenau between 7 August 2018 and 27 June 2026. Each dot is a new record.

When Kiel-Holtenau set new all-time records
Date	Kind	Detail
2018-08-07	Record high maximum temperature	Record high maximum temperature 35.1 C (95.2 F)
2022-07-20	Record high maximum temperature	Record high maximum temperature 36.5 C (97.7 F)
2026-06-27	Record high minimum temperature	Record high minimum temperature 22.6 C (72.7 F)

Wettest Day of Each Month

Aug: 104.2 mm (4.1 in)

The wettest day on record for each calendar month at Kiel-Holtenau. The most was 104.2 mm (4.1 in) on 27 August 1989.

Record daily precipitation for each month at Kiel-Holtenau
Month	Record daily precipitation (mm)	Date
Jan	30.9 mm (1.2 in)	26 January 1995
Feb	31.9 mm (1.3 in)	16 February 2022
Mar	51.1 mm (2.0 in)	12 March 1940
Apr	80.5 mm (3.2 in)	19 April 1940
May	74.9 mm (2.9 in)	29 May 1938
Jun	37.7 mm (1.5 in)	30 June 2017
Jul	73.0 mm (2.9 in)	18 July 2002
Aug	104.2 mm (4.1 in)	27 August 1989
Sep	42.8 mm (1.7 in)	22 September 1993
Oct	57.9 mm (2.3 in)	13 October 1938
Nov	31.7 mm (1.2 in)	4 November 2010
Dec	36.0 mm (1.4 in)	14 December 1989

Period of Record Coverage

1935 to 2026

46 years of record at Kiel-Holtenau, 1935 to 2026. 16 years have data for under 90 percent of days and are left out of rankings: 1935, 1936, 1937, 1938, 1939, 1940, 1941, 1978 and others.

Days with data per year at Kiel-Holtenau
Year	Days with data	Share of year	Complete
1935	299	82%	No
1936	113	31%	No
1937	304	83%	No
1938	312	85%	No
1939	289	79%	No
1940	252	69%	No
1941	268	73%	No
1978	1	0%	No
1986	247	68%	No
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	90	25%	No
2003	49	13%	No
2006	155	42%	No
2007	360	99%	Yes
2008	316	86%	No
2009	365	100%	Yes
2010	365	100%	Yes
2011	363	99%	Yes
2012	306	84%	No
2013	245	67%	No
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	365	100%	Yes
2020	366	100%	Yes
2021	365	100%	Yes
2022	365	100%	Yes
2023	365	100%	Yes
2024	366	100%	Yes
2025	365	100%	Yes
2026	243	67%	No

Latest Records

Latest records at Kiel-Holtenau
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
14 August 2026	Kiel-Holtenau, DE	daily high max	33.2 C (91.8 F)	3.6 C (6.5 F)	0 years	19 of 100 (Routine)
30 July 2026	Kiel-Holtenau, DE	daily high max	34.7 C (94.5 F)	4.5 C (8.1 F)	8 years	23 of 100 (Routine)
28 June 2026	Kiel-Holtenau, DE	daily high min	18.8 C (65.8 F)	2.3 C (4.1 F)	15 years	20 of 100 (Routine)
28 June 2026	Kiel-Holtenau, DE	daily high max	29.3 C (84.7 F)	2.6 C (4.7 F)	16 years	19 of 100 (Routine)
27 June 2026	Kiel-Holtenau, DE	all-time high min	22.6 C (72.7 F)	0.5 C (0.9 F)	31 years	39 of 100 (Notable)
27 June 2026	Kiel-Holtenau, DE	monthly high max	35.8 C (96.4 F)	1.4 C (2.5 F)	26 years	29 of 100 (Routine)
26 June 2026	Kiel-Holtenau, DE	daily high max	32.7 C (90.9 F)	3.7 C (6.7 F)	3 years	18 of 100 (Routine)
29 May 2026	Kiel-Holtenau, DE	daily high max	26.6 C (79.9 F)	0.1 C (0.2 F)	8 years	11 of 100 (Routine)
26 May 2026	Kiel-Holtenau, DE	daily high max	27.3 C (81.1 F)	1.3 C (2.3 F)	16 years	17 of 100 (Routine)
23 May 2026	Kiel-Holtenau, DE	daily high max	26.4 C (79.5 F)	1.6 C (2.9 F)	8 years	14 of 100 (Routine)
18 May 2026	Kiel-Holtenau, DE	daily rain	11.2 mm (0.4 in)	2.3 mm (0.09 in)	11 years	15 of 100 (Routine)
2 May 2026	Kiel-Holtenau, DE	daily high max	25.8 C (78.4 F)	3.8 C (6.8 F)	36 years	28 of 100 (Routine)
2 May 2026	Kiel-Holtenau, DE	daily high min	12.0 C (53.6 F)	0.4 C (0.7 F)	37 years	21 of 100 (Routine)
18 April 2026	Kiel-Holtenau, DE	daily high min	9.8 C (49.6 F)	0.9 C (1.6 F)	37 years	22 of 100 (Routine)
6 March 2026	Kiel-Holtenau, DE	daily high max	16.2 C (61.2 F)	0.9 C (1.6 F)	0 years	11 of 100 (Routine)
3 March 2026	Kiel-Holtenau, DE	daily high max	14.6 C (58.3 F)	1.9 C (3.4 F)	4 years	14 of 100 (Routine)
2 March 2026	Kiel-Holtenau, DE	daily high max	15.4 C (59.7 F)	3.3 C (5.9 F)	28 years	25 of 100 (Routine)
2 March 2026	Kiel-Holtenau, DE	daily high min	9.1 C (48.4 F)	2.9 C (5.2 F)	1 year	17 of 100 (Routine)
28 February 2026	Kiel-Holtenau, DE	daily high max	15.1 C (59.2 F)	2.8 C (5.0 F)	26 years	22 of 100 (Routine)
28 February 2026	Kiel-Holtenau, DE	daily high min	7.1 C (44.8 F)	1.8 C (3.2 F)	14 years	17 of 100 (Routine)

Climate Trend

31 complete years, 1938 to 2025

One stripe for each of 31 complete years at Kiel-Holtenau, 1938 to 2025. Blue stripes are years cooler than the station's own mean of 9.5 C (49.0 F); red stripes are warmer. The coolest year was 1987, at 7.2 C (44.9 F), and the warmest was 2024, at 10.8 C (51.4 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Kiel-Holtenau as warming stripes, 1938 to 2025
Year	Annual mean temperature	Difference from the station mean
1938	9.4 C	-0.04 C
1987	7.2 C	-2.26 C
1988	9.1 C	-0.34 C
1989	9.6 C	+0.10 C
1990	9.7 C	+0.28 C
1991	8.5 C	-0.98 C
1992	9.5 C	+0.01 C
1993	8.2 C	-1.28 C
1994	9.3 C	-0.16 C
1995	8.9 C	-0.56 C
1996	7.2 C	-2.22 C
1997	8.9 C	-0.51 C
1998	9.0 C	-0.45 C
1999	9.6 C	+0.19 C
2000	9.9 C	+0.44 C
2007	10.0 C	+0.53 C
2009	9.3 C	-0.14 C
2010	7.7 C	-1.78 C
2011	9.5 C	+0.07 C
2014	10.8 C	+1.30 C
2015	9.9 C	+0.41 C
2016	9.8 C	+0.39 C
2017	9.8 C	+0.32 C
2018	10.1 C	+0.67 C
2019	10.2 C	+0.72 C
2020	10.5 C	+1.07 C
2021	9.8 C	+0.31 C
2022	10.4 C	+0.96 C
2023	10.4 C	+0.97 C
2024	10.8 C	+1.32 C
2025	10.2 C	+0.79 C

The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1938 to 2025. In Fahrenheit: 0.5 F (0.1 to 0.8) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Kiel-Holtenau
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.1 to 0.4) per decade	0.5 F (0.1 to 0.8) per decade	1938 to 2025	31	Rise
Mean daily maximum	0.3 C (0.1 to 0.5) per decade	0.6 F (0.2 to 0.9) per decade	1938 to 2025	31	Rise
Mean daily minimum	0.19 C (0.02 to 0.35) per decade	0.34 F (0.04 to 0.64) per decade	1938 to 2025	31	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

1935 to 2026

Yearly extremes at Kiel-Holtenau: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.5 C (97.7 F)	2022	31.2 C (88.1 F)	46
Coldest night (TNn)	-23.9 C (-11.0 F)	1940	-10.2 C (13.6 F)	46
Wettest day (Rx1day)	104.2 mm (4.1 in)	1989	29.0 mm (1.1 in)	53
Wettest five days (Rx5day)	129.1 mm (5.1 in)	1989	60.8 mm (2.4 in)	46
Longest dry spell (CDD)	32 days	1995	18 days	53

Hottest day (TXx)

The hottest day of the year at Kiel-Holtenau, 1935 to 2026. The record is 36.5 C (97.7 F) in 2022, marked on the chart; the median year is 31.2 C (88.1 F).

Hottest day (TXx) at Kiel-Holtenau by year
Year	Hottest day (TXx)
1935	28.9 C (84.0 F)
1936	23.9 C (75.0 F)
1937	27.2 C (81.0 F)
1938	31.1 C (88.0 F)
1939	31.1 C (88.0 F)
1940	27.2 C (81.0 F)
1941	32.8 C (91.0 F)
1974	n/a
1976	n/a
1977	n/a
1978	25.0 C (77.0 F)
1979	n/a
1981	n/a
1986	31.5 C (88.7 F)
1987	28.8 C (83.8 F)
1988	25.5 C (77.9 F)
1989	31.9 C (89.4 F)
1990	32.0 C (89.6 F)
1991	29.6 C (85.3 F)
1992	35.0 C (95.0 F)
1993	26.0 C (78.8 F)
1994	34.7 C (94.5 F)
1995	31.6 C (88.9 F)
1996	34.0 C (93.2 F)
1997	31.4 C (88.5 F)
1998	29.9 C (85.8 F)
1999	32.5 C (90.5 F)
2000	34.4 C (93.9 F)
2001	12.6 C (54.7 F)
2002	n/a
2003	33.0 C (91.4 F)
2004	n/a
2005	n/a
2006	26.6 C (79.9 F)
2007	29.9 C (85.8 F)
2008	31.6 C (88.9 F)
2009	32.7 C (90.9 F)
2010	32.8 C (91.0 F)
2011	28.7 C (83.7 F)
2012	29.3 C (84.7 F)
2013	33.4 C (92.1 F)
2014	29.5 C (85.1 F)
2015	30.4 C (86.7 F)
2016	30.5 C (86.9 F)
2017	27.2 C (81.0 F)
2018	35.1 C (95.2 F)
2019	32.1 C (89.8 F)
2020	31.2 C (88.2 F)
2021	31.5 C (88.7 F)
2022	36.5 C (97.7 F)
2023	30.0 C (86.0 F)
2024	30.7 C (87.3 F)
2025	33.1 C (91.6 F)
2026	35.8 C (96.4 F)

Coldest night (TNn)

The coldest night of the year at Kiel-Holtenau, 1935 to 2026. The record is -23.9 C (-11.0 F) in 1940, marked on the chart; the median year is -10.2 C (13.6 F).

Coldest night (TNn) at Kiel-Holtenau by year
Year	Coldest night (TNn)
1935	-8.9 C (16.0 F)
1936	-7.8 C (18.0 F)
1937	-12.2 C (10.0 F)
1938	-11.1 C (12.0 F)
1939	-12.8 C (9.0 F)
1940	-23.9 C (-11.0 F)
1941	-17.8 C (0.0 F)
1974	n/a
1976	n/a
1977	n/a
1978	n/a
1979	10.0 C (50.0 F)
1981	n/a
1986	-5.1 C (22.8 F)
1987	-15.0 C (5.0 F)
1988	-6.7 C (19.9 F)
1989	-7.0 C (19.4 F)
1990	-4.3 C (24.3 F)
1991	-10.6 C (12.9 F)
1992	-7.9 C (17.8 F)
1993	-10.9 C (12.4 F)
1994	-11.5 C (11.3 F)
1995	-15.0 C (5.0 F)
1996	-13.1 C (8.4 F)
1997	-12.8 C (9.0 F)
1998	-10.2 C (13.6 F)
1999	-12.7 C (9.1 F)
2000	-11.6 C (11.1 F)
2001	-10.2 C (13.6 F)
2002	n/a
2003	5.5 C (41.9 F)
2004	n/a
2005	n/a
2006	-2.5 C (27.5 F)
2007	-7.0 C (19.4 F)
2008	-7.7 C (18.1 F)
2009	-12.4 C (9.7 F)
2010	-14.6 C (5.7 F)
2011	-9.6 C (14.7 F)
2012	-18.1 C (-0.6 F)
2013	-5.1 C (22.8 F)
2014	-10.8 C (12.6 F)
2015	-6.9 C (19.6 F)
2016	-8.3 C (17.1 F)
2017	-8.9 C (16.0 F)
2018	-10.6 C (12.9 F)
2019	-6.9 C (19.6 F)
2020	-2.9 C (26.8 F)
2021	-10.9 C (12.4 F)
2022	-10.9 C (12.4 F)
2023	-10.7 C (12.7 F)
2024	-6.1 C (21.0 F)
2025	-9.0 C (15.8 F)
2026	-9.6 C (14.7 F)

Wettest day (Rx1day)

The wettest day of the year at Kiel-Holtenau, 1935 to 2026. The record is 104.2 mm (4.1 in) in 1989, marked on the chart; the median year is 29.0 mm (1.1 in).

Wettest day (Rx1day) at Kiel-Holtenau by year
Year	Wettest day (Rx1day)
1935	24.4 mm (1.0 in)
1936	26.9 mm (1.1 in)
1937	29.0 mm (1.1 in)
1938	74.9 mm (2.9 in)
1939	26.9 mm (1.1 in)
1940	80.5 mm (3.2 in)
1941	25.9 mm (1.0 in)
1974	2.0 mm (0.08 in)
1976	8.9 mm (0.35 in)
1977	3.0 mm (0.12 in)
1978	3.0 mm (0.12 in)
1979	n/a
1981	0.0 mm (0.00 in)
1986	48.4 mm (1.9 in)
1987	32.1 mm (1.3 in)
1988	18.1 mm (0.7 in)
1989	104.2 mm (4.1 in)
1990	28.6 mm (1.1 in)
1991	36.4 mm (1.4 in)
1992	25.9 mm (1.0 in)
1993	42.8 mm (1.7 in)
1994	28.2 mm (1.1 in)
1995	37.7 mm (1.5 in)
1996	30.9 mm (1.2 in)
1997	46.6 mm (1.8 in)
1998	30.9 mm (1.2 in)
1999	30.3 mm (1.2 in)
2000	24.3 mm (1.0 in)
2001	25.2 mm (1.0 in)
2002	73.0 mm (2.9 in)
2003	21.7 mm (0.9 in)
2004	26.1 mm (1.0 in)
2005	34.3 mm (1.4 in)
2006	53.5 mm (2.1 in)
2007	35.0 mm (1.4 in)
2008	50.8 mm (2.0 in)
2009	32.2 mm (1.3 in)
2010	33.3 mm (1.3 in)
2011	39.3 mm (1.5 in)
2012	27.9 mm (1.1 in)
2013	61.6 mm (2.4 in)
2014	25.7 mm (1.0 in)
2015	22.5 mm (0.9 in)
2016	23.7 mm (0.9 in)
2017	37.7 mm (1.5 in)
2018	19.8 mm (0.8 in)
2019	29.6 mm (1.2 in)
2020	22.6 mm (0.9 in)
2021	30.7 mm (1.2 in)
2022	31.9 mm (1.3 in)
2023	23.2 mm (0.9 in)
2024	27.3 mm (1.1 in)
2025	71.1 mm (2.8 in)
2026	21.6 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Kiel-Holtenau, 1935 to 2026. The record is 129.1 mm (5.1 in) in 1989, marked on the chart; the median year is 60.8 mm (2.4 in).

Wettest five days (Rx5day) at Kiel-Holtenau by year
Year	Wettest five days (Rx5day)
1935	39.6 mm (1.6 in)
1936	n/a
1937	49.0 mm (1.9 in)
1938	28.5 mm (1.1 in)
1939	39.9 mm (1.6 in)
1940	33.5 mm (1.3 in)
1941	n/a
1974	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1981	n/a
1986	64.4 mm (2.5 in)
1987	59.1 mm (2.3 in)
1988	65.0 mm (2.6 in)
1989	129.1 mm (5.1 in)
1990	68.7 mm (2.7 in)
1991	76.7 mm (3.0 in)
1992	44.7 mm (1.8 in)
1993	82.0 mm (3.2 in)
1994	56.4 mm (2.2 in)
1995	72.7 mm (2.9 in)
1996	58.4 mm (2.3 in)
1997	57.9 mm (2.3 in)
1998	83.4 mm (3.3 in)
1999	57.0 mm (2.2 in)
2000	44.1 mm (1.7 in)
2001	63.9 mm (2.5 in)
2002	116.7 mm (4.6 in)
2003	44.1 mm (1.7 in)
2004	45.3 mm (1.8 in)
2005	81.2 mm (3.2 in)
2006	76.1 mm (3.0 in)
2007	76.7 mm (3.0 in)
2008	91.4 mm (3.6 in)
2009	54.1 mm (2.1 in)
2010	62.5 mm (2.5 in)
2011	100.3 mm (3.9 in)
2012	57.8 mm (2.3 in)
2013	86.3 mm (3.4 in)
2014	81.0 mm (3.2 in)
2015	68.1 mm (2.7 in)
2016	50.5 mm (2.0 in)
2017	76.0 mm (3.0 in)
2018	43.8 mm (1.7 in)
2019	54.6 mm (2.1 in)
2020	46.0 mm (1.8 in)
2021	62.9 mm (2.5 in)
2022	91.4 mm (3.6 in)
2023	49.2 mm (1.9 in)
2024	48.9 mm (1.9 in)
2025	78.3 mm (3.1 in)
2026	31.8 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Kiel-Holtenau, 1935 to 2026. The record is 32 days in 1995, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Kiel-Holtenau by year
Year	Longest dry spell (CDD)
1935	1 day
1936	1 day
1937	1 day
1938	1 day
1939	1 day
1940	1 day
1941	1 day
1974	1 day
1976	1 day
1977	2 days
1978	1 day
1979	n/a
1981	1 day
1986	17 days
1987	19 days
1988	17 days
1989	18 days
1990	18 days
1991	19 days
1992	27 days
1993	22 days
1994	19 days
1995	32 days
1996	26 days
1997	25 days
1998	17 days
1999	17 days
2000	22 days
2001	14 days
2002	23 days
2003	26 days
2004	17 days
2005	19 days
2006	18 days
2007	27 days
2008	17 days
2009	24 days
2010	22 days
2011	31 days
2012	24 days
2013	20 days
2014	20 days
2015	18 days
2016	18 days
2017	21 days
2018	17 days
2019	12 days
2020	25 days
2021	19 days
2022	30 days
2023	27 days
2024	18 days
2025	24 days
2026	14 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

31 years with a frost

Across 31 years with a frost, the median last spring frost at Kiel-Holtenau falls on 25 April and the median first autumn frost on 9 November, which leaves a median of 200 days between them.

Fitted over all years, the growing season changes by +6.2 days per decade at this station.

Frost dates and growing season at Kiel-Holtenau
Measure	Median, all years	Earliest period	Recent period (1987 to 2025)	Recent against earliest	Fitted trend
Last spring frost	25 April	n/a	24 April	n/a	-2.1 days per decade
First autumn frost	9 November	n/a	10 November	n/a	+4.1 days per decade
Growing days	200 days	n/a	202 days	n/a	+6.2 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

38 years, 1987 to 2025

A day with at least 30.0 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 110.1 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Kiel-Holtenau: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	30.0 mm (1.2 in)
5 years	41.2 mm (1.6 in)
10 years	51.6 mm (2.0 in)
25 years	69.5 mm (2.7 in)
50 years	87.3 mm (3.4 in)	Longer than the 38 years of record
100 years	110.1 mm (4.3 in)	Longer than the 38 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, 38 years of values from 1987 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: 104.2 mm (4.1 in) in 1989; 73.0 mm (2.9 in) in 2002; 71.1 mm (2.8 in) in 2025.

Download the Data

Data for Kiel-Holtenau standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Kiel-Holtenau 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.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).