AI-generatedKarlskrona at a glance
- Best time
- Apr – Aug
- Warmest month
- Jul · 20°
- Warmest sea
- Aug · 17.5°
- Sunshine a year
- 2,070 h
- Rain a year
- 583 mm
- Climate
- Maritime
- Time zone
- UTC+1 / UTC+2
- Elevation
- 18 m
Climate in Karlskrona
Karlskrona has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 20 °C, while January is the coolest at 2 °C. With around 2,070 hours of sunshine a year, Karlskrona is moderately sunny; June is the sunniest month with 10.3 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Poor
Best time to visit: April – August
A typical day in October
- Morning, 08:00: about 9°
- Midday, 13:00: about 11°
- Afternoon, 16:00: about 11°
- Evening, 20:00: about 10°
- Night, 23:00: about 9°
07:2718:00
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 07:04–08:19 · evening 17:08–18:23
- Blue hour
- Morning 06:49–07:04 · evening 18:23–18:37
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.
What is the weather like in Karlskrona in October?
In October, Karlskrona is cool: daytime highs average 11 °C, and nights cool down to about 8 °C. The sea averages 11.6 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 11 rainy days and 60 mm in total. All in all, October is not an ideal month for a holiday in Karlskrona.
More details for October
- Daylight
- 10 h 33 min07:27 – 18:00
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 70 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Stockholm
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %12 %
- Few rainy daysweight 20 %49 %
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
Sea temperature in Karlskrona
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 10.1 – 13.3 °C
Swimming season: Never above 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Karlskrona ranges from 2.9 °C in February to 17.5 °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 October to February 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 16.0 and 19.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 4.0° | 2.7° | 5.3° | cold |
| FebruaryFeb | 2.9° | 1.8° | 3.9° | cold |
| MarchMar | 3.0° | 1.6° | 4.2° | cold |
| AprilApr | 4.6° | 3.4° | 5.7° | cold |
| MayMay | 8.4° | 6.9° | 9.8° | cold |
| JuneJun | 13.3° | 12.2° | 14.6° | cold |
| JulyJul | 16.5° | 14.6° | 18.4° | cold |
| AugustAug | 17.5° | 16.0° | 19.7° | fresh |
| SeptemberSep | 15.4° | 13.9° | 16.7° | cold |
| OctoberOct | 11.6° | 10.1° | 13.3° | cold |
| NovemberNov | 8.5° | 7.4° | 10.1° | cold |
| DecemberDec | 5.8° | 4.6° | 7.3° | cold |
Sunshine hours in Karlskrona
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.7 of 10.5 hours of daylight in Karlskrona, 35 % of the day.
Sunshine hours: measured at the weather station 6 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Karlskrona
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 it, 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.
Rain in Karlskrona: 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.
In October, Karlskrona has about 11 rainy days with 60 mm of rain in total.
Wind and clouds in Karlskrona
How breezy and how cloudy Karlskrona 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.
In October, the wind in Karlskrona typically peaks at 25 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, and here it gets there all year.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 70 % of the sky over Karlskrona: mostly cloudy, with about 3.7 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 in Karlskrona
Snow is possible in Karlskrona, 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 calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Karlskrona.
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.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Karlskrona
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- 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 (−1°), 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.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 10 | 2° | −1° | 4.0° | 1.6 h | 11 | 49 |
| FebruaryFeb | 12 | 3° | −1° | 2.9° | 2.5 h | 10 | 39 |
| MarchMar | 20 | 5° | 1° | 3.0° | 4.8 h | 8 | 31 |
| AprilApr | 32 | 9° | 4° | 4.6° | 7.7 h | 7 | 30 |
| MayMay | 33 | 13° | 8° | 8.4° | 9.6 h | 9 | 42 |
| JuneJun | 33 | 18° | 12° | 13.3° | 10.3 h | 9 | 50 |
| JulyJul | 34 | 20° | 15° | 16.5° | 9.7 h | 11 | 67 |
| AugustAug | 34 | 20° | 15° | 17.5° | 8.6 h | 11 | 62 |
| SeptemberSep | 26 | 16° | 12° | 15.4° | 6.6 h | 9 | 48 |
| OctoberOct | 12 | 11° | 8° | 11.6° | 3.7 h | 11 | 60 |
| NovemberNov | 9 | 7° | 4° | 8.5° | 1.7 h | 12 | 55 |
| DecemberDec | 9 | 4° | 1° | 5.8° | 1.1 h | 11 | 51 |
Climate averages 1996–2025, 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
56.16° N, 15.59° E · 18 m · Europe/Stockholm
Best time to visit Karlskrona
The best time to visit Karlskrona is from April to August. The sea stays too cool for a classic beach holiday: even in August it only reaches 17.5 °C. For sightseeing, day trips and hiking, conditions are most comfortable from June to September. The wettest month is July with 67 mm of precipitation.
Karlskrona through the seasons
How the weather changes over the seasons, with averages for each.
Karlskrona in spring
Mar – May
Poor
- 5–13 °C by day
- Sea 5 °C
- 7 h of sun a day
- 24 rainy days in all
Karlskrona in summer
Jun – Aug
Poor
- 18–20 °C by day
- Sea 16 °C
- 10 h of sun a day
- 32 rainy days in all
Karlskrona in autumn
Sep – Nov
Poor
- 7–16 °C by day
- Sea 12 °C
- 4 h of sun a day
- 31 rainy days in all
Karlskrona in winter
Dec – Feb
Poor
- 2–4 °C by day
- Sea 4 °C
- 2 h of sun a day
- 32 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Karlskrona for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Compare two months in Karlskrona
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Karlskrona: score 34 against 12. 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.
| Month | October | July |
|---|---|---|
| Weather score | 12 | 34better |
| Day high | 11° | 20° |
| Night low | 8° | 15° |
| Sea | 11.6° | 16.5° |
| Sunshine | 3.7 h | 9.7 hbetter |
| Rainy days | 11 | 11 |
| Rainfall | 60 mm | 67 mm |
| Muggy days | 0better | 1 |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jun – Sep
15–28 °C and not too much rain
Snow
Dec – Mar
Snow on 2 or more days
Karlskrona month by month
The typical weather for every month at a glance.
10January2° · Sea 4° · 2 h
In January, Karlskrona is freezing cold: daytime highs average 2 °C, and nights often drop below freezing (−1 °C). The sea averages 4.0 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Precipitation, often as snow, falls on about 11 days, totalling 49 mm. Snow falls on about 4 days. All in all, January is not an ideal month for a holiday in Karlskrona.
Karlskrona in January12February3° · Sea 3° · 3 h
In February, Karlskrona is freezing cold: daytime highs average 3 °C, and nights often drop below freezing (−1 °C). The sea averages 2.9 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. Precipitation, often as snow, falls on about 10 days, totalling 39 mm. Snow falls on about 4 days. All in all, February is not an ideal month for a holiday in Karlskrona.
Karlskrona in February20March5° · Sea 3° · 5 h
In March, Karlskrona is cold: daytime highs average 5 °C, and nights cool down to about 1 °C. The sea averages 3.0 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain falls on about 8 days, adding up to 31 mm. Snow falls on about 2 days. All in all, March is not an ideal month for a holiday in Karlskrona.
Karlskrona in March32April9° · Sea 5° · 8 h
In April, Karlskrona is cold: daytime highs average 9 °C, and nights cool down to about 4 °C. The sea averages 4.6 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 30 mm. All in all, April is not an ideal month for a holiday in Karlskrona.
Karlskrona in April33May13° · Sea 8° · 10 h
In May, Karlskrona is cool: daytime highs average 13 °C, and nights cool down to about 8 °C. The sea averages 8.4 °C – swimming is only for the hardy. With around 10 hours of sunshine a day, there is plenty of sun. Rain falls on about 9 days, adding up to 42 mm. All in all, May is not an ideal month for a holiday in Karlskrona.
Karlskrona in May33June18° · Sea 13° · 10 h
In June, Karlskrona is mild: daytime highs average 18 °C, and nights cool down to about 12 °C. The sea averages 13.3 °C – swimming is only for the hardy. With around 10 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 9 rainy days and 50 mm in total. All in all, June is not an ideal month for a holiday in Karlskrona.
Karlskrona in June34July20° · Sea 17° · 10 h
In July, Karlskrona is mild: daytime highs average 20 °C, and nights cool down to about 15 °C. The sea averages 16.5 °C – swimming is only for the hardy. With around 10 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 11 rainy days and 67 mm in total. All in all, July is not an ideal month for a holiday in Karlskrona.
Karlskrona in July34August20° · Sea 18° · 9 h
In August, Karlskrona is mild: daytime highs average 20 °C, and nights cool down to about 15 °C. The sea averages 17.5 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 9 hours a day. Rain is frequent, with about 11 rainy days and 62 mm in total. All in all, August is not an ideal month for a holiday in Karlskrona.
Karlskrona in August26September16° · Sea 15° · 7 h
In September, Karlskrona is mild: daytime highs average 16 °C, and nights cool down to about 12 °C. The sea averages 15.4 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain falls on about 9 days, adding up to 48 mm. All in all, September is not an ideal month for a holiday in Karlskrona.
Karlskrona in September12October11° · Sea 12° · 4 h
In October, Karlskrona is cool: daytime highs average 11 °C, and nights cool down to about 8 °C. The sea averages 11.6 °C – swimming is only for the hardy. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 11 rainy days and 60 mm in total. All in all, October is not an ideal month for a holiday in Karlskrona.
Karlskrona in October9November7° · Sea 9° · 2 h
In November, Karlskrona is cold: daytime highs average 7 °C, and nights cool down to about 4 °C. The sea averages 8.5 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Rain is frequent, with about 12 rainy days and 55 mm in total. All in all, November is not an ideal month for a holiday in Karlskrona.
Karlskrona in November9December4° · Sea 6° · 1 h
In December, Karlskrona is cold: daytime highs average 4 °C, and nights cool down to about 1 °C. The sea averages 5.8 °C – swimming is only for the hardy. The sun is scarce, with only about 1 hours a day. Precipitation, often as snow, falls on about 11 days, totalling 51 mm. Snow falls on about 3 days. All in all, December is not an ideal month for a holiday in Karlskrona.
Karlskrona in DecemberKarlskrona compared
Put Karlskrona side by side with another destination.
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Karlskrona vs. Kalmar
In October the holiday weather in Karlskrona and Kalmar is about equally good (score 12 vs. 13). During the day it is about as warm in Kalmar as in Karlskrona. The sea in Kalmar is 1 °C cooler.
| in October | Karlskrona | Kalmar |
|---|---|---|
| Holiday score | 12 | 13 |
| Daytime high | 11° | 11° |
| Sea | 12° | 11° |
| Sunshine | 4 h | 4 h |
| Rainy days | 11 | 11 |
| Best time | Apr – Aug | Apr – Aug |
Through the year
Sweden in October: the best places
In October, Karlskrona ranks 15 of 25 destinations in this country.
- Malmö12°12°35
- 2Lund12°32
- 3Linköping10°26
- 4Uppsala9°25
- 5Växjö10°24
- 6Jönköping10°24
- 7Gothenburg11°12°24
- 8Stockholm10°10°24
- 15KarlskronaThis page11°12°12
Planning a trip to Karlskrona
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Karlskrona 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.
Karlskrona has its best school-holiday weather during the summer holidays (score 34) and its weakest during the Christmas holidays (score 10).
- 28
Easter holidays
Mar – Apr
Poor
- 7 °C by day
- Sea 4 °C
- 6.8 h of sun a day
- 7 rainy days a month
Keep in mind: Snow
- 33
May half-term
May – Jun
Poor
- 14 °C by day
- Sea 9 °C
- 9.7 h of sun a day
- 9 rainy days a month
- 34
Summer holidays
Jul – Aug
PoorBest holidays
- 20 °C by day
- Sea 17 °C
- 9.0 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 12
October half-term
Oct
Poor
- 11 °C by day
- Sea 12 °C
- 3.7 h of sun a day
- 11 rainy days a month
- 10
Christmas holidays
Dec – Jan
Poor
- 3 °C by day
- Sea 5 °C
- 1.4 h of sun a day
- 11 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 1 h 55 min
- Distance
- 1,170 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.
Frequently asked questions about Karlskrona
When is the best time to visit Karlskrona?
The best time to visit Karlskrona is from April to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Karlskrona?
The sea temperature in Karlskrona ranges from 2.9 °C in February to 17.5 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Karlskrona in October?
Only if you don't mind cold water: in October the sea averages just 11.6 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Karlskrona?
July is the warmest month, with average highs of 20 °C and nights around 15 °C. January is the coolest month at 2 °C.
When does it rain most in Karlskrona?
The wettest month is July with 67 mm of precipitation. The driest month is April with 30 mm.
How many hours of sunshine does Karlskrona get?
Karlskrona gets around 2,070 hours of sunshine a year. The sunniest month is June with 10.3 hours a day; in December there are 1.1 hours a day.
What time zone is Karlskrona in?
Karlskrona uses the time zone Europe/Stockholm: UTC+1 in January and UTC+2 in July.
How long is the flight from London to Karlskrona?
A nonstop flight from London to Karlskrona takes about 1 h 55 min, for a straight-line distance of about 1,170 km.
Which school holidays are best for Karlskrona?
Karlskrona has its best school-holiday weather during the summer holidays (score 34) and its weakest during the Christmas holidays (score 10). Holiday ratings (0–100): Easter holidays 28, May half-term 33, Summer holidays 34, October half-term 12, Christmas holidays 10.
Near Karlskrona
Other destinations close by.
Places with a climate like Karlskrona
Destinations whose weather through the year is closest to Karlskrona's – good alternatives.