The hottest, coldest, wettest and snowiest days Karlskrona has
recorded — the outer limits of what its weather can do, and how far
they sit beyond a normal day.
Based on 14 years of daily weather observations (2010–2024), from the Karlskrona-Soderstjerna station 1 km away. Updated through September 2024 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.
The four kinds of extreme
The hottest, coldest, wettest and snowiest single days Karlskrona
has recorded — each shown against what a normal day that time of year
looks like.
🔥Hottest day
90°FAug 1, 2018
The three most extreme on record
190°FAug 1, 2018
288°FJul 12, 2010
387°FAug 3, 2014
❄️Coldest night
6°FDec 22, 2010
The three most extreme on record
16°FDec 22, 2010
28°FDec 21, 2010
39°FFeb 4, 2012
🌧️Most rain in one day
3.04 inAug 31, 2018
The three most extreme on record
13.04 inAug 31, 2018
22.89 inJul 25, 2010
32.55 inAug 6, 2014
In plain terms
Across the record, Karlskrona has reached as high as 90°F and as low as 6°F. A single day has delivered over 3 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Ronneby, a weather station, about 23 km from the city centre. The underlying daily records come from NOAA's global station network.