Sandhamn Weather Records (SWE00138848)

Record envelope, standing records and threshold days for Sandhamn (SWE00138848), Sweden, with 62 years of record.

Key Facts for Sandhamn

Sandhamn (SWE00138848) is a weather station in Sweden at 59.29 latitude and 18.92 longitude, 10 m (33 ft) above sea level.
The station reports from 1965 to 2026, 62 years of record.
1,464 records set at Sandhamn still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Sandhamn set a daily record precipitation of 22.7 mm (0.9 in) on 15 June 2026.

About the Station

Location: Sweden, 59.29 latitude, 18.92 longitude.
Elevation: 10 m (33 ft).
Period of record: 1965 to 2026, 62 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Sandhamn. 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 Sandhamn, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	3.9 C (39.0 F)	-17.3 C (0.9 F)	n/a	n/a
Feb	6.5 C (43.7 F)	-23.4 C (-10.1 F)	n/a	n/a
Mar	14.8 C (58.6 F)	-15.4 C (4.3 F)	n/a	n/a
Apr	17.5 C (63.5 F)	-9.9 C (14.2 F)	n/a	n/a
May	21.5 C (70.7 F)	-0.8 C (30.6 F)	n/a	n/a
Jun	28.5 C (83.3 F)	4.7 C (40.5 F)	n/a	n/a
Jul	28.0 C (82.4 F)	8.5 C (47.3 F)	n/a	n/a
Aug	28.0 C (82.4 F)	7.5 C (45.5 F)	n/a	n/a
Sep	23.6 C (74.5 F)	1.5 C (34.7 F)	n/a	n/a
Oct	15.7 C (60.3 F)	-1.5 C (29.3 F)	n/a	n/a
Nov	10.0 C (50.0 F)	-6.2 C (20.8 F)	n/a	n/a
Dec	8.7 C (47.7 F)	-11.7 C (10.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Sandhamn still stand. 1966 holds the most, with 414.

Wettest Day of Each Month

Aug: 103.0 mm (4.1 in)

The wettest day on record for each calendar month at Sandhamn. The most was 103.0 mm (4.1 in) on 16 August 1975.

Record daily precipitation for each month at Sandhamn
Month	Record daily precipitation (mm)	Date
Jan	23.1 mm (0.9 in)	29 January 2022
Feb	22.0 mm (0.9 in)	10 February 2011
Mar	36.3 mm (1.4 in)	8 March 2023
Apr	24.2 mm (1.0 in)	20 April 1986
May	44.6 mm (1.8 in)	26 May 2021
Jun	37.0 mm (1.5 in)	7 June 2004
Jul	48.0 mm (1.9 in)	26 July 1972
Aug	103.0 mm (4.1 in)	16 August 1975
Sep	56.4 mm (2.2 in)	12 September 2001
Oct	39.2 mm (1.5 in)	8 October 2017
Nov	29.5 mm (1.2 in)	9 November 2010
Dec	23.3 mm (0.9 in)	3 December 2007

Period of Record Coverage

1965 to 1969

5 years of record at Sandhamn, 1965 to 1969. 2 years have data for under 90 percent of days and are left out of rankings: 1965, 1969.

Latest Records

Latest records at Sandhamn
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 June 2026	Sandhamn, SE	daily rain	22.7 mm (0.9 in)	4.0 mm (0.16 in)	32 years	20 of 100 (Routine)
14 September 2025	Sandhamn, SE	daily rain	14.2 mm (0.6 in)	4.2 mm (0.17 in)	39 years	20 of 100 (Routine)
2 September 2025	Sandhamn, SE	daily rain	25.2 mm (1.0 in)	12.0 mm (0.5 in)	10 years	30 of 100 (Routine)
22 August 2025	Sandhamn, SE	daily rain	32.7 mm (1.3 in)	14.4 mm (0.6 in)	19 years	28 of 100 (Routine)
20 November 2024	Sandhamn, SE	daily rain	25.6 mm (1.0 in)	13.2 mm (0.5 in)	45 years	49 of 100 (Notable)
10 October 2024	Sandhamn, SE	daily rain	21.3 mm (0.8 in)	0.1 mm (0.00 in)	35 years	16 of 100 (Routine)
9 October 2024	Sandhamn, SE	daily rain	26.6 mm (1.0 in)	6.8 mm (0.27 in)	50 years	34 of 100 (Routine)
23 July 2024	Sandhamn, SE	daily rain	18.0 mm (0.7 in)	2.2 mm (0.09 in)	39 years	20 of 100 (Routine)
30 June 2024	Sandhamn, SE	daily rain	21.0 mm (0.8 in)	10.9 mm (0.4 in)	50 years	20 of 100 (Routine)
2 April 2024	Sandhamn, SE	daily rain	21.0 mm (0.8 in)	8.5 mm (0.33 in)	41 years	20 of 100 (Routine)
16 February 2024	Sandhamn, SE	daily rain	18.1 mm (0.7 in)	10.3 mm (0.4 in)	50 years	20 of 100 (Routine)
25 November 2023	Sandhamn, SE	daily rain	13.5 mm (0.5 in)	3.9 mm (0.15 in)	48 years	20 of 100 (Routine)
3 November 2023	Sandhamn, SE	daily rain	18.7 mm (0.7 in)	7.7 mm (0.30 in)	45 years	20 of 100 (Routine)
13 October 2023	Sandhamn, SE	daily rain	9.6 mm (0.38 in)	0.6 mm (0.02 in)	13 years	10 of 100 (Routine)
3 October 2023	Sandhamn, SE	daily rain	21.2 mm (0.8 in)	0.6 mm (0.02 in)	28 years	14 of 100 (Routine)
27 March 2023	Sandhamn, SE	daily rain	22.0 mm (0.9 in)	12.7 mm (0.5 in)	28 years	20 of 100 (Routine)
25 March 2023	Sandhamn, SE	daily rain	7.1 mm (0.28 in)	3.4 mm (0.13 in)	45 years	20 of 100 (Routine)
8 March 2023	Sandhamn, SE	monthly rain	36.3 mm (1.4 in)	12.8 mm (0.5 in)	0 years	55 of 100 (Notable)
7 March 2023	Sandhamn, SE	monthly rain	23.5 mm (0.9 in)	5.1 mm (0.20 in)	4 years	20 of 100 (Routine)
17 February 2023	Sandhamn, SE	daily rain	10.6 mm (0.4 in)	4.5 mm (0.18 in)	28 years	20 of 100 (Routine)

Extremes by Year

1965 to 2026

Yearly extremes at Sandhamn: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	28.5 C (83.3 F)	1969	25.7 C (78.3 F)	5
Coldest night (TNn)	-23.4 C (-10.1 F)	1966	-16.0 C (3.2 F)	5
Wettest day (Rx1day)	103.0 mm (4.1 in)	1975	31.5 mm (1.2 in)	62
Wettest five days (Rx5day)	129.9 mm (5.1 in)	2001	49.8 mm (2.0 in)	62
Longest dry spell (CDD)	44 days	2002	23 days	62

Hottest day (TXx)

The hottest day of the year at Sandhamn, 1965 to 2026. The record is 28.5 C (83.3 F) in 1969, marked on the chart; the median year is 25.7 C (78.3 F).

Hottest day (TXx) at Sandhamn by year
Year	Hottest day (TXx)
1965	5.0 C (41.0 F)
1966	27.5 C (81.5 F)
1967	23.5 C (74.3 F)
1968	25.7 C (78.3 F)
1969	28.5 C (83.3 F)
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at Sandhamn, 1965 to 2026. The record is -23.4 C (-10.1 F) in 1966, marked on the chart; the median year is -16.0 C (3.2 F).

Coldest night (TNn) at Sandhamn by year
Year	Coldest night (TNn)
1965	-11.7 C (10.9 F)
1966	-23.4 C (-10.1 F)
1967	-12.2 C (10.0 F)
1968	-16.8 C (1.8 F)
1969	-16.0 C (3.2 F)
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Sandhamn, 1965 to 2026. The record is 103.0 mm (4.1 in) in 1975, marked on the chart; the median year is 31.5 mm (1.2 in).

Wettest day (Rx1day) at Sandhamn by year
Year	Wettest day (Rx1day)
1965	14.0 mm (0.6 in)
1966	35.4 mm (1.4 in)
1967	41.0 mm (1.6 in)
1968	34.4 mm (1.4 in)
1969	16.4 mm (0.6 in)
1970	16.0 mm (0.6 in)
1971	17.9 mm (0.7 in)
1972	48.0 mm (1.9 in)
1973	34.0 mm (1.3 in)
1974	38.0 mm (1.5 in)
1975	103.0 mm (4.1 in)
1976	18.8 mm (0.7 in)
1977	34.0 mm (1.3 in)
1978	26.0 mm (1.0 in)
1979	24.4 mm (1.0 in)
1980	26.4 mm (1.0 in)
1981	25.0 mm (1.0 in)
1982	31.3 mm (1.2 in)
1983	26.0 mm (1.0 in)
1984	26.8 mm (1.1 in)
1985	22.4 mm (0.9 in)
1986	34.0 mm (1.3 in)
1987	16.7 mm (0.7 in)
1988	37.8 mm (1.5 in)
1989	23.3 mm (0.9 in)
1990	25.4 mm (1.0 in)
1991	28.4 mm (1.1 in)
1992	32.0 mm (1.3 in)
1993	43.0 mm (1.7 in)
1994	52.5 mm (2.1 in)
1995	31.7 mm (1.2 in)
1996	23.5 mm (0.9 in)
1997	34.2 mm (1.3 in)
1998	34.9 mm (1.4 in)
1999	22.8 mm (0.9 in)
2000	35.7 mm (1.4 in)
2001	56.4 mm (2.2 in)
2002	21.5 mm (0.8 in)
2003	34.0 mm (1.3 in)
2004	37.0 mm (1.5 in)
2005	40.0 mm (1.6 in)
2006	32.0 mm (1.3 in)
2007	27.9 mm (1.1 in)
2008	27.7 mm (1.1 in)
2009	29.9 mm (1.2 in)
2010	40.5 mm (1.6 in)
2011	27.9 mm (1.1 in)
2012	35.0 mm (1.4 in)
2013	28.2 mm (1.1 in)
2014	35.1 mm (1.4 in)
2015	44.9 mm (1.8 in)
2016	22.3 mm (0.9 in)
2017	39.2 mm (1.5 in)
2018	18.4 mm (0.7 in)
2019	25.5 mm (1.0 in)
2020	30.3 mm (1.2 in)
2021	44.6 mm (1.8 in)
2022	23.1 mm (0.9 in)
2023	36.3 mm (1.4 in)
2024	26.6 mm (1.0 in)
2025	32.7 mm (1.3 in)
2026	33.1 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Sandhamn, 1965 to 2026. The record is 129.9 mm (5.1 in) in 2001, marked on the chart; the median year is 49.8 mm (2.0 in).

Wettest five days (Rx5day) at Sandhamn by year
Year	Wettest five days (Rx5day)
1965	34.5 mm (1.4 in)
1966	58.0 mm (2.3 in)
1967	51.4 mm (2.0 in)
1968	58.2 mm (2.3 in)
1969	45.0 mm (1.8 in)
1970	26.4 mm (1.0 in)
1971	35.2 mm (1.4 in)
1972	71.3 mm (2.8 in)
1973	40.5 mm (1.6 in)
1974	70.8 mm (2.8 in)
1975	122.8 mm (4.8 in)
1976	33.4 mm (1.3 in)
1977	62.1 mm (2.4 in)
1978	58.1 mm (2.3 in)
1979	44.8 mm (1.8 in)
1980	56.5 mm (2.2 in)
1981	41.4 mm (1.6 in)
1982	53.8 mm (2.1 in)
1983	37.3 mm (1.5 in)
1984	48.3 mm (1.9 in)
1985	49.5 mm (1.9 in)
1986	51.9 mm (2.0 in)
1987	37.6 mm (1.5 in)
1988	68.6 mm (2.7 in)
1989	39.6 mm (1.6 in)
1990	40.6 mm (1.6 in)
1991	49.0 mm (1.9 in)
1992	50.5 mm (2.0 in)
1993	74.3 mm (2.9 in)
1994	54.0 mm (2.1 in)
1995	53.4 mm (2.1 in)
1996	40.0 mm (1.6 in)
1997	44.0 mm (1.7 in)
1998	38.8 mm (1.5 in)
1999	43.8 mm (1.7 in)
2000	44.8 mm (1.8 in)
2001	129.9 mm (5.1 in)
2002	46.0 mm (1.8 in)
2003	72.0 mm (2.8 in)
2004	56.5 mm (2.2 in)
2005	53.5 mm (2.1 in)
2006	57.6 mm (2.3 in)
2007	45.9 mm (1.8 in)
2008	50.0 mm (2.0 in)
2009	57.6 mm (2.3 in)
2010	47.7 mm (1.9 in)
2011	39.6 mm (1.6 in)
2012	54.2 mm (2.1 in)
2013	34.7 mm (1.4 in)
2014	55.2 mm (2.2 in)
2015	73.8 mm (2.9 in)
2016	51.1 mm (2.0 in)
2017	60.9 mm (2.4 in)
2018	34.0 mm (1.3 in)
2019	38.4 mm (1.5 in)
2020	38.4 mm (1.5 in)
2021	57.2 mm (2.3 in)
2022	43.0 mm (1.7 in)
2023	63.5 mm (2.5 in)
2024	64.1 mm (2.5 in)
2025	46.5 mm (1.8 in)
2026	33.8 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Sandhamn, 1965 to 2026. The record is 44 days in 2002, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Sandhamn by year
Year	Longest dry spell (CDD)
1965	5 days
1966	17 days
1967	21 days
1968	20 days
1969	27 days
1970	34 days
1971	29 days
1972	34 days
1973	26 days
1974	23 days
1975	25 days
1976	21 days
1977	13 days
1978	24 days
1979	28 days
1980	34 days
1981	35 days
1982	21 days
1983	14 days
1984	22 days
1985	20 days
1986	17 days
1987	28 days
1988	15 days
1989	30 days
1990	20 days
1991	25 days
1992	29 days
1993	20 days
1994	22 days
1995	22 days
1996	39 days
1997	22 days
1998	20 days
1999	24 days
2000	22 days
2001	19 days
2002	44 days
2003	29 days
2004	15 days
2005	19 days
2006	21 days
2007	16 days
2008	31 days
2009	23 days
2010	28 days
2011	22 days
2012	13 days
2013	35 days
2014	15 days
2015	43 days
2016	23 days
2017	34 days
2018	24 days
2019	21 days
2020	21 days
2021	25 days
2022	38 days
2023	17 days
2024	18 days
2025	23 days
2026	26 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.

Rainfall Return Levels

59 years, 1966 to 2025

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 72.5 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Sandhamn: 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	39.6 mm (1.6 in)
10 years	46.7 mm (1.8 in)
25 years	56.4 mm (2.2 in)
50 years	64.2 mm (2.5 in)
100 years	72.5 mm (2.9 in)	Longer than the 59 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, 59 years of values from 1966 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: 103.0 mm (4.1 in) in 1975; 56.4 mm (2.2 in) in 2001; 52.5 mm (2.1 in) in 1994.

Download the Data

Data for Sandhamn standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sandhamn 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Year	Days with data	Share of year	Complete
1965	31	8%	No
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	243	67%	No