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Karlshamn weather & best time to visit

Sun, sea & sand

Karlshamn at a glance

Best time
Jul – Aug
Warmest month
Jul · 21°
Warmest sea
Aug · 17.6°
Sunshine a year
1,970 h
Rain a year
655 mm
Climate
Maritime
Time zone
UTC+1 / UTC+2
Elevation
14 m

Climate in Karlshamn

Karlshamn has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 21 °C, while January is the coolest at 3 °C. With around 1,970 hours of sunshine a year, Karlshamn is moderately sunny; June is the sunniest month with 9.8 hours a day.

Holiday weather through the year

Best time to visit

Best time to visit Karlshamn

The best time to visit Karlshamn is from July to August. The sea stays too cool for a classic beach holiday: even in August it only reaches 17.6 °C. For sightseeing, day trips and hiking, conditions are most comfortable in June and from August to September. Rain is frequent from November to December; the wettest month is July with 76 mm.

Karlshamn through the seasons

How the weather changes over the seasons, with averages for each.

Karlshamn in spring

Mar – May

27

Poor

  • 6–15 °C by day
  • Sea 6 °C
  • 7.1 h of sun a day
  • 26 rainy days in all

Karlshamn in summer

Jun – Aug

37

Poor

  • 19–21 °C by day
  • Sea 16 °C
  • 9.1 h of sun a day
  • 34 rainy days in all

Karlshamn in autumn

Sep – Nov

14

Poor

  • 7–17 °C by day
  • Sea 12 °C
  • 3.7 h of sun a day
  • 33 rainy days in all

Karlshamn in winter

Dec – Feb

10

Poor

  • 3–4 °C by day
  • Sea 4 °C
  • 1.6 h of sun a day
  • 34 rainy days in all

Which month for what?

Beach & swimming

No month

Sea from 21 °C, warm and mostly dry

Sightseeing & hiking

Jun, Aug – Sep

15–28 °C and not too much rain

Rainy months

Nov – Dec

Rainy season or more than 12 rainy days

Snow

Dec – Mar

Snow on 2 or more days

Find your perfect month

Tell us what you like and we rate every month in Karlshamn for you.

Swimming in the sea
Sunshine
Little rain

Your best months: June – August

Based on the climate averages; tap a month to see its details.

Your holiday weather, at a glance

Weather in October

Weather in October

10

Holiday weather in October

Poor

Best time to visit: July – August

A typical day in October

  1. Morning, 08:00: about 8°
  2. Midday, 13:00: about 12°
  3. Afternoon, 16:00: about 12°
  4. Evening, 20:00: about 10°
  5. Night, 23:00: about 9°

07:3018:03

Cold evenings: bring a warm jacket.

Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.

Light for photos in October

Golden hour
Morning 07:07–08:22 · evening 17:11–18:26
Blue hour
Morning 06:52–07:07 · evening 18:26–18:40

Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.

October in Karlshamn compared with home

Home:

Loading the climate at home …

Early or late October?

In October, daytime highs fall from about 14° at the start of the month to 10° at the end. The sea cools from 13° to 10°. The days get 2.2 h shorter.

Early or late October?
October1 Oct31 Oct
Daytime high14°10°
Night-time low10°6°
Sea13°10°
Daylight11.6 h9.4 h

What is the weather like in Karlshamn in October?

In October, Karlshamn is cool: daytime highs average 12 °C, and nights cool down to about 8 °C. The sea averages 11.7 °C – swimming is only for the hardy. The sun is scarce, with only about 3.4 hours a day. Rain is frequent, with about 12 rainy days and 67 mm in total. All in all, October is not an ideal month for a holiday in Karlshamn.

More details for October

Daylight
10 h 33 min07:30 – 18:03
UV index
1 · lowclear sky, noon (estimate)All months
Muggy days
0 daysdew point 18 °C or moreAll months
Wind
23 km/haverage daily peakAll months
Cloud cover
72 %on averageAll months
Hot days
0 days30 °C or more
Snow days
0 days1 cm or more of fresh snowAll months
Time zone
UTC+2offset from UTC

How the score comes together

  • Temperatureweight 35 %0 %
  • Seaweight 25 %0 %
  • Sunshineweight 20 %7 %
  • Few rainy daysweight 20 %46 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.

What to pack in October

  • A jumper for the evenings
  • Rain jacket or umbrella

Compare two months in Karlshamn

Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.

vs

July has the better holiday weather in Karlshamn: score 41 against 10. In July, days are 9 °C warmer than in October. The sea is 5 °C warmer in July. The sun shines 6 hours longer a day in July.

October vs July, Karlshamn
MonthOctoberJuly
Holiday weather score1041better
Daytime high12°21°
Night-time low8°15°
Sea11.7°16.5°
Sunshine3.4 h9.3 hbetter
Rainy days1212
Rainfall67 mm76 mm
Muggy days0better1

Based on the climate averages 1996–2025.

Karlshamn month by month

The typical weather for every month at a glance.

9January3° · Sea 4° · 1.5 h

In January, Karlshamn is cold: daytime highs average 3 °C, and nights cool down to about 0 °C. The sea averages 4.1 °C – swimming is only for the hardy. The sun is scarce, with only about 1.5 hours a day. Precipitation falls on about 12 days, totalling 56 mm; on about 4 of them it snows. All in all, January is not an ideal month for a holiday in Karlshamn.

Karlshamn in January
12February3° · Sea 3° · 2.4 h

In February, Karlshamn is cold: daytime highs average 3 °C, and nights cool down to about 0 °C. The sea averages 2.9 °C – swimming is only for the hardy. The sun is scarce, with only about 2.4 hours a day. Precipitation falls on about 10 days, totalling 45 mm; on about 4 of them it snows. All in all, February is not an ideal month for a holiday in Karlshamn.

Karlshamn in February
19March6° · Sea 3° · 4.6 h

In March, Karlshamn is cold: daytime highs average 6 °C, and nights cool down to about 1 °C. The sea averages 3.0 °C – swimming is only for the hardy. Expect around 4.6 hours of sunshine a day. Rain falls on about 8 days, adding up to 36 mm. Snow falls on about 3 days. All in all, March is not an ideal month for a holiday in Karlshamn.

Karlshamn in March
29April10° · Sea 5° · 7.4 h

In April, Karlshamn is cold: daytime highs average 10 °C, and nights cool down to about 4 °C. The sea averages 4.8 °C – swimming is only for the hardy. The sun shines for around 7.4 hours a day. Rain falls on about 8 days, adding up to 33 mm. All in all, April is not an ideal month for a holiday in Karlshamn.

Karlshamn in April
32May15° · Sea 9° · 9.2 h

In May, Karlshamn is cool: daytime highs average 15 °C, and nights cool down to about 8 °C. The sea averages 8.7 °C – swimming is only for the hardy. With around 9.2 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 10 rainy days and 48 mm in total. All in all, May is not an ideal month for a holiday in Karlshamn.

Karlshamn in May
31June19° · Sea 14° · 9.8 h

In June, Karlshamn is mild: daytime highs average 19 °C, and nights cool down to about 12 °C. The sea averages 13.6 °C – swimming is only for the hardy. With around 9.8 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 10 rainy days and 58 mm in total. All in all, June is not an ideal month for a holiday in Karlshamn.

Karlshamn in June
41July21° · Sea 17° · 9.3 h

In July, Karlshamn is warm: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 16.5 °C – swimming is only for the hardy. With around 9.3 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 12 rainy days and 76 mm in total. All in all, July is a so-so month for a holiday in Karlshamn – and yet one of the best months here.

Karlshamn in July
40August21° · Sea 18° · 8.2 h

In August, Karlshamn is warm: daytime highs average 21 °C, and nights cool down to about 15 °C. The sea averages 17.6 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8.2 hours a day. Rain is frequent, with about 12 rainy days and 67 mm in total. All in all, August is a so-so month for a holiday in Karlshamn – and yet one of the best months here.

Karlshamn in August
23September17° · Sea 15° · 6.2 h

In September, Karlshamn is mild: daytime highs average 17 °C, and nights cool down to about 12 °C. The sea averages 15.3 °C – swimming is only for the hardy. Expect around 6.2 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 53 mm in total. All in all, September is not an ideal month for a holiday in Karlshamn.

Karlshamn in September
10October12° · Sea 12° · 3.4 h

In October, Karlshamn is cool: daytime highs average 12 °C, and nights cool down to about 8 °C. The sea averages 11.7 °C – swimming is only for the hardy. The sun is scarce, with only about 3.4 hours a day. Rain is frequent, with about 12 rainy days and 67 mm in total. All in all, October is not an ideal month for a holiday in Karlshamn.

Karlshamn in October
8November7° · Sea 9° · 1.6 h

In November, Karlshamn is cold: daytime highs average 7 °C, and nights cool down to about 5 °C. The sea averages 8.6 °C – swimming is only for the hardy. The sun is scarce, with only about 1.6 hours a day. Rain is frequent, with about 13 rainy days and 59 mm in total. All in all, November is not an ideal month for a holiday in Karlshamn.

Karlshamn in November
8December4° · Sea 6° · 1.0 h

In December, Karlshamn is cold: daytime highs average 4 °C, and nights cool down to about 1 °C. The sea averages 5.9 °C – swimming is only for the hardy. The sun is scarce, with only about 1.0 hours a day. Rain is frequent, with about 12 rainy days and 59 mm in total. Snow falls on about 3 days. All in all, December is not an ideal month for a holiday in Karlshamn.

Karlshamn in December

Climate in detail

Climate through the year

Long-term monthly averages. Tap a month to see its details.

Best time to visit

Nights and sleep in Karlshamn

How warm the nights get in each month, from the mean night-time low. Tap a month for details.

  • Cold 0–8°
  • Cool 8–15°
  • Pleasant 15–20°

CoolOctober: nights around 8°. A duvet at night and a jumper for the evening.

The coolest nights are in February (0°), the warmest in August (15°). Nights are pleasant for sleeping (15 to 20 °C) from July to August. Nights fall below 8 °C on average from November to April, so the room should be heated.

Temperatures through the year

Average daytime high, night-time low and sea temperature per month.

OctoberDay 12°Night 8°Sea 12°
DayNightSea
MonthScoreDayNightSeaSunRain daysRain mm
JanuaryJan93°0°4.1°1.5 h1256
FebruaryFeb123°0°2.9°2.4 h1045
MarchMar196°1°3.0°4.6 h836
AprilApr2910°4°4.8°7.4 h833
MayMay3215°8°8.7°9.2 h1048
JuneJun3119°12°13.6°9.8 h1058
JulyJul4121°15°16.5°9.3 h1276
AugustAug4021°15°17.6°8.2 h1267
SeptemberSep2317°12°15.3°6.2 h953
OctoberOct1012°8°11.7°3.4 h1267
NovemberNov87°5°8.6°1.6 h1359
DecemberDec84°1°5.9°1.0 h1259

Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences

56.17° N, 14.86° E · 14 m · Europe/Stockholm

Swimming calendar

Sea temperature in Karlshamn

Monthly sea surface temperature with the range of cooler and warmer years.

Sea in October11.7°Ccold

8 in 10 years: 9.5 – 13.2 °C

Swimming season: Always below 20 °C

  • cold
  • fresh
  • refreshing
  • pleasant
  • warm
  • very warm
OctoberMean sea temperature 11.7°8 in 10 years 9.5° – 13.2°
20°
Mean sea temperature8 in 10 years20 °C – comfortable for swimming

The sea temperature in Karlshamn ranges from 2.9 °C in February to 17.6 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.

The sea warms up slowly: it is warmest in August, while the air already peaks in July. From November to January the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 15.6 and 19.6 °C.

Sea temperature by month
MonthAverageCool yearWarm yearFeels
JanuaryJan4.1°2.7°5.4°cold
FebruaryFeb2.9°1.6°4.0°cold
MarchMar3.0°1.5°4.4°cold
AprilApr4.8°3.6°5.9°cold
MayMay8.7°7.3°10.1°cold
JuneJun13.6°12.3°15.0°cold
JulyJul16.5°14.1°18.6°cold
AugustAug17.6°15.6°19.6°fresh
SeptemberSep15.3°13.2°16.8°cold
OctoberOct11.7°9.5°13.2°cold
NovemberNov8.6°7.5°10.0°cold
DecemberDec5.9°4.6°7.5°cold
Sunshine

Sunshine hours in Karlshamn

Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.

Per year
1,970 hours
Sunniest month
Jun · 9.8 h a day
Least sunshine
Dec · 1.0 h a day
OctoberSunshine 3.4 hDaylight 10.5 hShare of daylight 32 %
SunshineDaylight

In October, the sun shines for about 3.4 of 10.5 hours of daylight in Karlshamn, 32 % of the daylight hours.

Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.

Rain

Rain in Karlshamn: rainy days and rainfall

A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.

Per year
655 mm on 127 days
Wettest month
Jul · 76 mm
Driest month
Apr · 33 mm
OctoberRainy days 12Rainfall 67 mm

In October, Karlshamn has about 12 rainy days with 67 mm of rain in total.

Sun protection

UV index in Karlshamn

How strong the sun is at noon, month by month, and how quickly unprotected skin burns.

Clear-sky UV in October
1 · lowLittle protection needed; sunglasses on bright days.

The sun is strongest in June (UV 6).

Minutes until sunburn in October

Very fair skin
about 105 min
Fair skin
over 2 h
Light brown skin
over 2 h
Olive skin
over 2 h

Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.

Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.

Wind & clouds

Wind and clouds in Karlshamn

How breezy and how cloudy Karlshamn is through the year. Tap a month to select it on the whole page.

Wind

Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.

Year average
21 km/h · moderate breeze
Windiest month
Jan · 24 km/h
Calmest month
Jul · 19 km/h
OctoberWind 23 km/hBeaufort 4
20
WindBeaufort 4

In October, the wind in Karlshamn typically peaks at 23 km/h during the day: Beaufort 4, moderate breeze.

Breezy months for windsurfing and kiting

From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Sep – Jun.

Clouds

Average share of the sky covered by cloud, day and night.

Year average
67 % · mostly cloudy
Clearest month
May · 57 %
Cloudiest month
Dec · 82 %
OctoberCloud cover 72 %Sunshine 3.4 h

In October, cloud covers on average 72 % of the sky over Karlshamn: mostly cloudy, with about 3.4 hours of sunshine a day.

Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.

Snow

Snow in Karlshamn

Snow is possible in Karlshamn, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.

Snow days a year
16 days
Fresh snow a year
54 cm
Snow possible
Dec – Mar

Snow calendar

  • hardly any
  • possible
  • likely
  • very likely
OctoberDays with fresh snow 0Fresh snow 1 cmChance of snow 1 / 100

In October, it hardly ever snows in Karlshamn.

Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.

Planning a trip to Karlshamn

Weather for your travel dates

Pick your arrival and length of stay, and we sum up the weather to expect.

Karlshamn in the school holidays

How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.

Karlshamn has its best school-holiday weather during the summer holidays (score 40) and its weakest during the Christmas holidays (score 9).

  • Easter holidays

    Mar – Apr

    26

    Poor

    • 8 °C by day
    • Sea 4 °C
    • 6.6 h of sun a day
    • 8 rainy days a month

    Keep in mind: Snow

  • May half-term

    May – Jun

    32

    Poor

    • 15 °C by day
    • Sea 10 °C
    • 9.3 h of sun a day
    • 10 rainy days a month
  • Summer holidays

    Jul – Aug

    40

    FairBest holidays

    • 21 °C by day
    • Sea 17 °C
    • 8.6 h of sun a day
    • 12 rainy days a month
  • October half-term

    Oct

    10

    Poor

    • 12 °C by day
    • Sea 12 °C
    • 3.4 h of sun a day
    • 12 rainy days a month
  • Christmas holidays

    Dec – Jan

    9

    Poor

    • 4 °C by day
    • Sea 5 °C
    • 1.3 h of sun a day
    • 12 rainy days a month

    Keep in mind: Frequent rain, Snow

Based on the climate averages 1996–2025.

Getting there

Flying from

Nonstop flight
about 1 h 50 min
Distance
1,130 km
Time zone
UTC+2
Jet lag
Hardly any (under 3 h)

Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.

Compare & alternatives

Compare

Karlshamn compared

Put Karlshamn side by side with another destination.

Nearby:
Compare with home:

Karlshamn vs Sölvesborg

In October the holiday weather in Karlshamn and Sölvesborg is about equally good (score 10 vs 11). During the day it is about as warm in Sölvesborg as in Karlshamn. The sea is about equally warm.

Karlshamn vs Sölvesborg, in October
in OctoberKarlshamnSölvesborg
Holiday weather score1011
Daytime high12°12°
Sea12°12°
Sunshine3 h3 h
Rainy days1211
Best timeJul – AugJul – Aug

Through the year

OctoberKarlshamn 12°Sölvesborg 12°
KarlshamnSölvesborg
Go to Sölvesborg
Ranking

Sweden in October: the best places

In October, Karlshamn ranks 23 among the 31 nearest destinations in this country.

  1. Kristianstad13°38
  2. 2Malmö13°12°38
  3. 3Lund12°35
  4. 4Älmhult11°32
  5. 5Vimmerby11°31
  6. 6Linköping11°30
  7. 7Gothenburg12°12°29
  8. 8Växjö11°28
  9. 23KarlshamnThis page12°12°10
All destinations: Sweden

Near Karlshamn

Other destinations close by.

Places with a climate like Karlshamn

Destinations whose weather through the year is closest to Karlshamn's – good alternatives.

  1. 89 % similar11VordingborgDenmark13°13°Best time: Jul – Aug
  2. 88 % similar11TønsbergNorway11°12°Best time: Jul
  3. 87 % similar11PuckPoland12°13°Best time: Jul – Aug
  4. 87 % similar10Nykøbing FalsterDenmark13°13°Best time: Jul – Aug

Frequently asked questions about Karlshamn

When is the best time to visit Karlshamn?

The best time to visit Karlshamn is from July to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.

How warm is the sea in Karlshamn?

The sea temperature in Karlshamn ranges from 2.9 °C in February to 17.6 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.

Can you swim in Karlshamn in October?

Only if you don't mind cold water: in October the sea averages just 11.7 °C. Comfortable swimming temperatures are not reached at any time of year.

What is the warmest month in Karlshamn?

July is the warmest month, with average highs of 21 °C and nights around 15 °C. January is the coolest month at 3 °C.

When does it rain most in Karlshamn?

Rain is frequent from November to December; the wettest month is July with 76 mm. The driest month is April with 33 mm.

How many hours of sunshine does Karlshamn get?

Karlshamn gets around 1,970 hours of sunshine a year. The sunniest month is June with 9.8 hours a day; in December there are 1.0 hours a day.

What time zone is Karlshamn in?

Karlshamn is on UTC+1 in January and UTC+2 in July.

How long is the flight from London to Karlshamn?

A nonstop flight from London to Karlshamn takes about 1 h 50 min, for a straight-line distance of about 1,130 km.

Which school holidays are best for Karlshamn?

Karlshamn has its best school-holiday weather during the summer holidays (score 40) and its weakest during the Christmas holidays (score 9). Holiday ratings (0–100): Easter holidays 26, May half-term 32, summer holidays 40, October half-term 10, Christmas holidays 9.