Sweden · 1991–2020

Best time to visit
Karlshamn.

July leads for comfortable weather in Karlshamn: typically 22.5°C by day, 12.9°C at night, with 59 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.5°C

Typical low12.9°C

Rain in July59 mm

Comfort

July

July · August · June

83climate match

Beach

July

July · August · June

48climate match

Outdoors

June

June · September · August

86climate match

The weakest month is January, scoring 5 against July’s 83 — days reach only 3°C, 21° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

53° / -1.9°

Feb

53.5° / -2°

Mar

106.7° / -0.9°

Apr

3411.8° / 2.1°

May

5616.8° / 6.5°

Jun

6920.2° / 10.4°

Jul

8322.5° / 12.9°

Aug

8022° / 12.7°

Sep

6217.7° / 9.3°

Oct

3312.3° / 5.3°

Nov

117.3° / 2.2°

Dec

54.1° / -0.7°

Monthly climate evidence for Karlshamn — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 5 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	3°C	-1.9°C	50 mm	10.2	4.0°C	7 h 31	5	Strong coverage
February	3.5°C	-2°C	39 mm	8.8	2.9°C	9 h 27	5	Strong coverage
March	6.7°C	-0.9°C	35 mm	7.8	2.9°C	11 h 37	10	Strong coverage
April	11.8°C	2.1°C	32 mm	6.5	4.6°C	14 h 06	34	Strong coverage
May	16.8°C	6.5°C	43 mm	7.4	8.5°C	16 h 18	56	Strong coverage
June	20.2°C	10.4°C	64 mm	9.5	13.4°C	17 h 37	69	Strong coverage
July	22.5°C	12.9°C	59 mm	8.7	16.5°C	17 h 05	83	Strong coverage
August	22°C	12.7°C	58 mm	9.5	17.8°C	15 h 06	80	Strong coverage
September	17.7°C	9.3°C	52 mm	8.4	15.0°C	12 h 40	62	Strong coverage
October	12.3°C	5.3°C	64 mm	9.9	11.5°C	10 h 17	33	Strong coverage
November	7.3°C	2.2°C	62 mm	11.3	8.4°C	8 h 06	11	Strong coverage
December	4.1°C	-0.7°C	56 mm	11.5	5.9°C	6 h 57	5	Strong coverage

What has changed

Karlshamn runs +2.0°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+1.9

Feb

+2.3

Mar

+3.0

Apr

+2.7

May

+2.0

Jun

+1.7

Jul

+2.0

Aug

+1.8

Sep

+2.4

Oct

+1.3

Nov

+1.4

Dec

+1.9

July daytime highs, 2011–2025. Last recorded: 23.7°C.

Records at KARLSHAMN, 1882–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	11.6°C16 Jan 1989	-27.0°C26 Jan 1942	37 mm10 Jan 1968	127 mm1988 · driest 0 mm in 1997	145
February	16.7°C26 Feb 2019	-24.0°C13 Feb 1893	26 mm23 Feb 1946	101 mm1958 · driest 0 mm in 1959	145
March	20.6°C27 Mar 2012	-23.0°C7 Mar 1886	29 mm12 Mar 1884	93 mm1898 · driest 3 mm in 1964	144
April	25.5°C28 Apr 1993	-12.5°C5 Apr 1911	52 mm4 Apr 1975	111 mm1920 · driest 0 mm in 2005	145
May	29.0°C30 May 2018	-4.0°C4 May 1899	46 mm4 May 1996	165 mm1996 · driest 2 mm in 1913	144
June	33.0°C26 Jun 1889	-1.2°C2 Jun 1975	75 mm23 Jun 1909	162 mm2007 · driest 0 mm in 1992	145
July	34.0°C3 Jul 1883	3.0°C6 Jul 1984	57 mm12 Jul 1934	209 mm2007 · driest 1 mm in 1994	143
August	33.0°C11 Aug 1975	1.5°C27 Aug 1885	64 mm23 Aug 1903	181 mm1891 · driest 1 mm in 2002	143
September	28.9°C5 Sep 2024	-2.0°C23 Sep 1886	42 mm8 Sep 2001	164 mm1994 · driest 4 mm in 1959	144
October	22.1°C9 Oct 1995	-8.6°C27 Oct 2003	37 mm15 Oct 1976	147 mm1974 · driest 2 mm in 1920	144
November	16.7°C6 Nov 2020	-17.0°C29 Nov 1884	36 mm9 Nov 1895	126 mm1970 · driest 3 mm in 1892	144
December	12.7°C5 Dec 2006	-20.7°C18 Dec 1981	33 mm1 Dec 2021	122 mm1985 · driest 5 mm in 1905	144

Typical days per month at KARLSHAMN, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)
January	0	19	1
February	0	18	<1
March	0	18	<1
April	0	9	<1
May	1	1	1
June	3	0	2
July	7	0	1
August	5	0	2
September	<1	<1	2
October	0	4	2
November	0	9	2
December	0	15	1

How often, not how much — every day in KARLSHAMN’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	0%	30%	3%	37%	-0.9–4.6°C
February	0%	27%	2%	32%	-0.5–5.4°C
March	0%	24%	2%	27%	2.4–8.5°C
April	1%	23%	2%	25%	7.4–12.6°C
May	14%	22%	3%	24%	13.2–17.6°C
June	39%	26%	4%	31%	17.6–21.7°C
July	55%	29%	5%	38%	19.2–23.8°C
August	46%	31%	5%	40%	18.3–22.9°C
September	13%	28%	5%	35%	14.9–19.0°C
October	<1%	30%	5%	40%	9.6–13.5°C
November	0%	33%	4%	45%	4.4–8.7°C
December	0%	33%	3%	44%	0.9–6.0°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1882Each stripe is one year’s mean temperature against the 142-year average. Warmest: 2020. Coolest: 1942.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2701727
NOAA station: SWE00137686 · KARLSHAMN
Station distance: 1.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 56.17°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 5 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from KARLSHAMN is what differs

Olofström→Mörrum→Svängsta→Jämshög→Näsum→Norje→

Or put two places side by side: Karlshamn vs Olofström

Best time to visitKarlshamn.

July

July

June

The whole year,without the guesswork.

Karlshamn runs +2.0°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Karlshamn.

The whole year,
without the guesswork.

Karlshamn runs +2.0°C
on the 1961–1990 baseline.

Nearby, measured,
and named.