AI-generatedSlagelse at a glance
- Best time
- May – Sep
- Warmest month
- Jul · 22°
- Sunshine a year
- 1,910 h
- Rain a year
- 659 mm
- Climate
- Maritime
- Time zone
- UTC+1 / UTC+2
- Elevation
- 51 m
Climate in Slagelse
Slagelse has a maritime climate with moderate summers and cool, often grey winters. July is the warmest month with average highs of 22 °C, while January is the coolest at 4 °C. With around 1,910 hours of sunshine a year, Slagelse is moderately sunny; June is the sunniest month with 8.9 hours a day.
Holiday weather through the year
Best time to visit Slagelse
The best time to visit Slagelse is from May to September. For sightseeing, day trips and hiking, conditions are most comfortable from May to June and from August to September. Rain is frequent in October; the wettest month is July with 76 mm.
Slagelse through the seasons
How the weather changes over the seasons, with averages for each.
Slagelse in spring
Mar – May
Fair
- 7–16 °C by day
- 6.9 h of sun a day
- 30 rainy days in all
Slagelse in summer
Jun – Aug
Excellent
- 19–22 °C by day
- 8.5 h of sun a day
- 36 rainy days in all
Slagelse in autumn
Sep – Nov
Fair
- 8–18 °C by day
- 3.7 h of sun a day
- 33 rainy days in all
Slagelse in winter
Dec – Feb
Poor
- 4–5 °C by day
- 1.8 h of sun a day
- 33 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May – Jun, Aug – Sep
15–28 °C and not too much rain
Rainy months
Oct
Rainy season or more than 12 rainy days
Snow
Jan – Feb
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Slagelse for you.
Your best months: July – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: May – September
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 8°
- Midday, 13:00: about 12°
- Afternoon, 16:00: about 13°
- Evening, 20:00: about 11°
- Night, 23:00: about 9°
07:4218:18
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 07:20–08:33 · evening 17:27–18:41
- Blue hour
- Morning 07:06–07:20 · evening 18:41–18:55
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 Slagelse compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 15° at the start of the month to 10° at the end. The days get 2.2 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 15° | 10° |
| Night-time low | 10° | 6° |
| Daylight | 11.6 h | 9.5 h |
What is the weather like in Slagelse in October?
In October, Slagelse is cool: daytime highs average 13 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3.6 hours a day. Rain is frequent, with about 12 rainy days and 64 mm in total. All in all, October is not an ideal month for a holiday in Slagelse.
More details for October
- Daylight
- 10 h 35 min07:42 – 18:18
- 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+2offset from UTC
How the score comes together
- Temperatureweight 50 %47 %
- Sunshineweight 20 %10 %
- Few rainy daysweight 30 %42 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Slagelse
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
June has the better holiday weather in Slagelse: score 84 against 38. In June, days are 6 °C warmer than in October. June has one rainy day fewer. The sun shines 5 hours longer a day in June.
| Month | October | June |
|---|---|---|
| Holiday weather score | 38 | 84better |
| Daytime high | 13° | 19° |
| Night-time low | 8° | 11° |
| Sunshine | 3.6 h | 8.9 hbetter |
| Rainy days | 12 | 11better |
| Rainfall | 64 mm | 65 mm |
Based on the climate averages 1996–2025.
Slagelse month by month
The typical weather for every month at a glance.
14January4° · 1.6 h
In January, Slagelse is cold: daytime highs average 4 °C, and nights cool down to about 0 °C. The sun is scarce, with only about 1.6 hours a day. Precipitation falls on about 12 days, totalling 52 mm; on about 3 of them it snows. All in all, January is not an ideal month for a holiday in Slagelse.
Slagelse in January17February4° · 2.5 h
In February, Slagelse is cold: daytime highs average 4 °C, and nights cool down to about 0 °C. The sun is scarce, with only about 2.5 hours a day. Precipitation falls on about 10 days, totalling 43 mm; on about 3 of them it snows. All in all, February is not an ideal month for a holiday in Slagelse.
Slagelse in February24March7° · 4.6 h
In March, Slagelse is cold: daytime highs average 7 °C, and nights cool down to about 1 °C. Expect around 4.6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 42 mm in total. Snow falls on about 2 days. All in all, March is not an ideal month for a holiday in Slagelse.
Slagelse in March49April11° · 7.2 h
In April, Slagelse is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sun shines for around 7.2 hours a day. Rain is frequent, with about 10 rainy days and 38 mm in total. All in all, April is a so-so month for a holiday in Slagelse.
Slagelse in April74May16° · 8.8 h
In May, Slagelse is cool: daytime highs average 16 °C, and nights cool down to about 8 °C. The sun shines for around 8.8 hours a day. Rain is frequent, with about 11 rainy days and 55 mm in total. All in all, May is a good month for a holiday in Slagelse.
Slagelse in May84June19° · 8.9 h
In June, Slagelse is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sun shines for around 8.9 hours a day. Rain is frequent, with about 11 rainy days and 65 mm in total. All in all, June is an excellent month for a holiday in Slagelse.
Slagelse in June81July22° · 8.9 h
In July, Slagelse is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. The sun shines for around 8.9 hours a day. Rain is frequent, with about 13 rainy days and 76 mm in total. All in all, July is an excellent month for a holiday in Slagelse.
Slagelse in July78August22° · 7.6 h
In August, Slagelse is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. The sun shines for around 7.6 hours a day. Rain is frequent, with about 12 rainy days and 70 mm in total. All in all, August is a good month for a holiday in Slagelse.
Slagelse in August76September18° · 5.8 h
In September, Slagelse is mild: daytime highs average 18 °C, and nights cool down to about 12 °C. Expect around 5.8 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 53 mm in total. All in all, September is a good month for a holiday in Slagelse.
Slagelse in September38October13° · 3.6 h
In October, Slagelse is cool: daytime highs average 13 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3.6 hours a day. Rain is frequent, with about 12 rainy days and 64 mm in total. All in all, October is not an ideal month for a holiday in Slagelse.
Slagelse in October15November8° · 1.8 h
In November, Slagelse is cold: daytime highs average 8 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 1.8 hours a day. Rain is frequent, with about 11 rainy days and 49 mm in total. All in all, November is not an ideal month for a holiday in Slagelse.
Slagelse in November14December5° · 1.2 h
In December, Slagelse is cold: daytime highs average 5 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 1.2 hours a day. Rain is frequent, with about 12 rainy days and 52 mm in total. Snow falls on about 2 days. All in all, December is not an ideal month for a holiday in Slagelse.
Slagelse in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Slagelse
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°
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 (14°). 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 | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 14 | 4° | 0° | 1.6 h | 12 | 52 |
| FebruaryFeb | 17 | 4° | 0° | 2.5 h | 10 | 43 |
| MarchMar | 24 | 7° | 1° | 4.6 h | 10 | 42 |
| AprilApr | 49 | 11° | 4° | 7.2 h | 10 | 38 |
| MayMay | 74 | 16° | 8° | 8.8 h | 11 | 55 |
| JuneJun | 84 | 19° | 11° | 8.9 h | 11 | 65 |
| JulyJul | 81 | 22° | 14° | 8.9 h | 13 | 76 |
| AugustAug | 78 | 22° | 14° | 7.6 h | 12 | 70 |
| SeptemberSep | 76 | 18° | 12° | 5.8 h | 10 | 53 |
| OctoberOct | 38 | 13° | 8° | 3.6 h | 12 | 64 |
| NovemberNov | 15 | 8° | 4° | 1.8 h | 11 | 49 |
| DecemberDec | 14 | 5° | 2° | 1.2 h | 12 | 52 |
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
55.40° N, 11.35° E · 51 m · Europe/Copenhagen
Sunshine hours in Slagelse
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 3.6 of 10.6 hours of daylight in Slagelse, 34 % 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 in Slagelse: 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, Slagelse has about 12 rainy days with 64 mm of rain in total.
UV index in Slagelse
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 7).
Minutes until sunburn in October
- Very fair skin
- about 95 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 and clouds in Slagelse
How breezy and how cloudy Slagelse 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 Slagelse typically peaks at 25 km/h during the day: Beaufort 4, moderate breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 70 % of the sky over Slagelse: mostly cloudy, with about 3.6 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 Slagelse
Snow is possible in Slagelse, 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 Slagelse.
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 Slagelse
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Slagelse 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.
Slagelse has its best school-holiday weather during the summer holidays (score 79) and its weakest during the Christmas holidays (score 14).
- 42
Easter holidays
Mar – Apr
Fair
- 10 °C by day
- 6.4 h of sun a day
- 10 rainy days a month
- 76
May half-term
May – Jun
Good
- 17 °C by day
- 8.8 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 79
Summer holidays
Jul – Aug
GoodBest holidays
- 22 °C by day
- 8.1 h of sun a day
- 12 rainy days a month
- 38
October half-term
Oct
Poor
- 13 °C by day
- 3.6 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
- 14
Christmas holidays
Dec – Jan
Poor
- 4 °C by day
- 1.4 h of sun a day
- 12 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 1 h 35 min
- Distance
- 890 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
Slagelse compared
Put Slagelse side by side with another destination.
Slagelse vs Korsør
In October the holiday weather in Slagelse and Korsør is about equally good (score 38 vs 39). During the day it is about as warm in Korsør as in Slagelse.
| in October | Slagelse | Korsør |
|---|---|---|
| Holiday weather score | 38 | 39 |
| Daytime high | 13° | 13° |
| Sea | no sea nearby | 12° |
| Sunshine | 4 h | 4 h |
| Rainy days | 12 | 13 |
| Best time | May – Sep | Jul – Aug |
Through the year
Denmark in October: the best places
In October, Slagelse ranks 3 among the 31 nearest destinations in this country.
- Odense13°12°41
- 2Ringsted13°40
- 3SlagelseThis page13°38
- 4Aarhus13°12°38
- 5Copenhagen12°12°34
- 6Hillerød13°34
- 7Nyborg13°12°12
- 8Roskilde13°12°12
Near Slagelse
Other destinations close by.
Places with a climate like Slagelse
Destinations whose weather through the year is closest to Slagelse's – good alternatives.
Frequently asked questions about Slagelse
When is the best time to visit Slagelse?
The best time to visit Slagelse is from May to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Slagelse?
July is the warmest month, with average highs of 22 °C and nights around 14 °C. January is the coolest month at 4 °C.
When does it rain most in Slagelse?
Rain is frequent in October; the wettest month is July with 76 mm. The driest month is April with 38 mm.
How many hours of sunshine does Slagelse get?
Slagelse gets around 1,910 hours of sunshine a year. The sunniest month is June with 8.9 hours a day; in December there are 1.2 hours a day.
What time zone is Slagelse in?
Slagelse is on UTC+1 in January and UTC+2 in July.
How long is the flight from London to Slagelse?
A nonstop flight from London to Slagelse takes about 1 h 35 min, for a straight-line distance of about 890 km.
Which school holidays are best for Slagelse?
Slagelse has its best school-holiday weather during the summer holidays (score 79) and its weakest during the Christmas holidays (score 14). Holiday ratings (0–100): Easter holidays 42, May half-term 76, summer holidays 79, October half-term 38, Christmas holidays 14.