Sweden · 1991–2020

Best time to visit
Karlskrona.

July leads for comfortable weather in Karlskrona: typically 22.6°C by day, 11.8°C at night, with 60 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.6°C

Typical low11.8°C

Rain in July60 mm

Comfort

July

July · August · June

81climate match

Beach

July

July · August · June

45climate match

Outdoors

June

June · July · August

86climate match

The weakest month is January, scoring 5 against July’s 81 — days reach only 2.4°C, 22° 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

52.4° / -2.8°

Feb

52.9° / -3°

Mar

66.2° / -1.9°

Apr

3111.9° / 0.9°

May

5316.8° / 5.1°

Jun

6720.2° / 9.1°

Jul

8122.6° / 11.8°

Aug

7621.9° / 11.5°

Sep

5817.4° / 8.3°

Oct

2811.7° / 4.5°

Nov

66.7° / 1.5°

Dec

53.4° / -1.5°

Monthly climate evidence for Karlskrona — 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	2.4°C	-2.8°C	50 mm	9.6	3.9°C	7 h 31	5	Good coverage
February	2.9°C	-3°C	43 mm	9.4	2.8°C	9 h 27	5	Good coverage
March	6.2°C	-1.9°C	36 mm	8.6	2.8°C	11 h 37	6	Good coverage
April	11.9°C	0.9°C	35 mm	7.2	4.5°C	14 h 06	31	Good coverage
May	16.8°C	5.1°C	47 mm	7.6	8.2°C	16 h 18	53	Good coverage
June	20.2°C	9.1°C	62 mm	9.4	13.1°C	17 h 37	67	Good coverage
July	22.6°C	11.8°C	60 mm	8.7	16.5°C	17 h 05	81	Good coverage
August	21.9°C	11.5°C	69 mm	9.5	17.7°C	15 h 06	76	Good coverage
September	17.4°C	8.3°C	60 mm	8.6	15.0°C	12 h 40	58	Good coverage
October	11.7°C	4.5°C	75 mm	10.6	11.5°C	10 h 17	28	Good coverage
November	6.7°C	1.5°C	68 mm	11.5	8.3°C	8 h 06	6	Good coverage
December	3.4°C	-1.5°C	57 mm	11	5.8°C	6 h 57	5	Good coverage

What has changed

Karlskrona runs +1.8°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

+2.0

Feb

+2.3

Mar

+3.0

Apr

+2.5

May

+1.5

Jun

+1.0

Jul

+1.3

Aug

+1.1

Sep

+2.0

Oct

+1.0

Nov

+1.5

Dec

+2.2

July daytime highs, 2011–2025. Last recorded: 23.6°C.

Records at RONNEBY-BREDAKRA, 1948–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	11.5°C16 Jan 1989	-22.5°C31 Jan 2010	45 mm10 Jan 1968	135 mm1988 · driest 1 mm in 1997	77
February	15.1°C27 Feb 2019	-25.2°C18 Feb 1978	25 mm27 Feb 1994	107 mm1958 · driest 1 mm in 1959	78
March	19.2°C27 Mar 2012	-22.4°C7 Mar 2006	21 mm27 Mar 1966	86 mm1983 · driest 4 mm in 2022	78
April	26.6°C28 Apr 1993	-10.0°C16 Apr 1966	53 mm19 Apr 1986	79 mm1986 · driest 3 mm in 2025	78
May	28.7°C30 May 2018	-4.8°C2 May 1971	39 mm28 May 1998	120 mm1996 · driest 7 mm in 1959	79
June	32.6°C29 Jun 1953	-1.6°C1 Jun 1975	52 mm28 Jun 1991	149 mm1991 · driest 0 mm in 1992	79
July	33.3°C10 Jul 1959	2.8°C21 Jul 1971	50 mm15 Jul 1995	145 mm2021 · driest 4 mm in 1969	78
August	33.2°C1 Aug 2018	0.7°C29 Aug 2007	127 mm18 Aug 1994	162 mm1994 · driest 7 mm in 2002	78
September	28.8°C4 Sep 2024	-4.1°C24 Sep 2002	41 mm15 Sep 1955	161 mm1994 · driest 8 mm in 1959	78
October	22.2°C9 Oct 1995	-10.8°C24 Oct 2003	58 mm30 Oct 1989	156 mm2002 · driest 5 mm in 2015	78
November	16.3°C6 Nov 2020	-17.2°C20 Nov 1971	31 mm4 Nov 2013	146 mm1977 · driest 8 mm in 1955	78
December	12.0°C4 Dec 1953	-23.4°C22 Dec 2010	45 mm17 Dec 1976	143 mm1999 · driest 4 mm in 2012	78

Typical days per month at RONNEBY-BREDAKRA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	20	1
February	0	0	20	<1
March	0	0	20	<1
April	<1	0	13	<1
May	1	0	4	1
June	4	<1	<1	2
July	8	<1	0	1
August	6	<1	0	2
September	<1	0	<1	2
October	0	0	6	3
November	0	0	11	2
December	0	0	16	1

How often, not how much — every day in RONNEBY-BREDAKRA’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%	34%	4%	43%	-1.5–4.8°C
February	0%	29%	3%	37%	-0.9–5.2°C
March	0%	25%	2%	31%	2.2–9.1°C
April	2%	24%	2%	26%	8.2–13.4°C
May	19%	24%	3%	26%	14.2–18.3°C
June	44%	26%	5%	33%	18.6–22.8°C
July	53%	31%	7%	42%	19.5–24.7°C
August	51%	29%	5%	36%	19.2–23.5°C
September	15%	30%	6%	37%	15.1–19.2°C
October	<1%	32%	6%	43%	9.7–13.4°C
November	0%	37%	6%	51%	4.5–8.1°C
December	0%	36%	4%	50%	0.2–5.5°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.

1953Each stripe is one year’s mean temperature against the 73-year average. Warmest: 2020. Coolest: 1987.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2701713
NOAA station: SWE00137724 · RONNEBY-BREDAKRA
Station distance: 22.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 56.16°, 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 RONNEBY-BREDAKRA is what differs

Ronneby→Kallinge→Rödeby→Nättraby→Bräkne-Hoby→Hasslö→

Or put two places side by side: Karlskrona vs Ronneby

Best time to visitKarlskrona.

July

July

June

The whole year,without the guesswork.

Karlskrona runs +1.8°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Karlskrona.

The whole year,
without the guesswork.

Karlskrona runs +1.8°C
on the 1961–1990 baseline.

Nearby, measured,
and named.