Kalundborg in Summer
In summer (June, July and August), Kalundborg sees average daytime highs around 18°C and overnight lows near 15°C, with 199 mm of rain over about 33 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Over the season highs climb from about 15°C in early June to 18°C by late August. The sky is clear or mostly clear about 31% of the time across summer, and the air most often feels dry.
Summer is Kalundborg's best season of the year to visit on our travel score. For the whole year in context, see Kalundborg's year-round climate.
- Avg daytime high
- 18°C
- warmest season of the year
- Avg overnight low
- 15°C
- Rainfall
- 199 mm
- 33 wet days
- Avg wind
- 22 km/h
- Travel score
- 5.7
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Kalundborg in Summer
Over the season highs climb from about 15°C in early June to 18°C by late August.
A typical summer day in Kalundborg reaches about 18°C and drops to 15°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Kalundborg
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Kalundborg weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 4° / 1° | 57 | 12.2 | 3.4 | 7.4 | 0.0 |
| Feb | 3° / 1° | 44 | 9.9 | 3.5 | 9.2 | 0.0 |
| Mar | 5° / 2° | 43 | 9.4 | 2.1 | 11.4 | 0.1 |
| Apr | 8° / 5° | 36 | 8.5 | 0.3 | 13.8 | 1.5 |
| May | 13° / 10° | 51 | 10 | 0 | 15.9 | 3.6 |
| Jun | 16° / 13° | 64 | 10.5 | 0 | 17.1 | 5.1 |
| Jul | 19° / 16° | 63 | 10.7 | 0 | 16.7 | 6.0 |
| Aug | 19° / 16° | 71 | 11.6 | 0 | 14.8 | 5.9 |
| Sep | 16° / 14° | 67 | 11.6 | 0 | 12.5 | 4.7 |
| Oct | 12° / 10° | 75 | 13 | 0 | 10.1 | 2.8 |
| Nov | 8° / 6° | 65 | 13.4 | 0.6 | 8 | 1.1 |
| Dec | 5° / 3° | 63 | 12.7 | 2.4 | 6.9 | 0.1 |
Cloud cover in Summer
The sky is clear or mostly clear about 31% of the time across summer.
Chance of precipitation in Summer
Kalundborg gets around 199 mm of rain over 33 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 22 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 16 h 48 min in early June to 13 h 42 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.4 kWh/m².
Is summer a good time to visit Kalundborg?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Kalundborg for sightseeing.
What to pack for Kalundborg in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Kalundborg sees daytime highs around 18°C and nights near 15°C. Pack sun protection. Worth having: a warm layer, rain gear and a windbreaker. About 33 days see rain.
Sea temperature near Kalundborg in Summer
The nearest coast averages about 17°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 18°C and coldest in February near 2°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 3 | 2 | 3 | 6 | 11 | 15 | 18 | 18 | 16 | 12 | 8 | 5 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 3 | Bracing |
| Feb | 2 | Bracing |
| Mar | 3 | Bracing |
| Apr | 6 | Bracing |
| May | 11 | Bracing |
| Jun | 15 | Bracing |
| Jul | 18 | Cool |
| Aug | 18 | Cool |
| Sep | 16 | Cool |
| Oct | 12 | Bracing |
| Nov | 8 | Bracing |
| Dec | 5 | Bracing |
UV index in Kalundborg in Summer
Clear-sky midday UV across summer averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Kalundborg peaks around June 22 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 20 at about 0 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 0 | 1 | 2 | 3 | 5 | 6 | 6 | 5 | 4 | 2 | 1 | 0 |
| Level | Low | Low | Moderate | Moderate | Moderate | High | High | Moderate | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 0 | Low |
| Feb | 1 | Low |
| Mar | 2 | Moderate |
| Apr | 3 | Moderate |
| May | 5 | Moderate |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 5 | Moderate |
| Sep | 4 | Moderate |
| Oct | 2 | Low |
| Nov | 1 | Low |
| Dec | 0 | Low |
Where is Kalundborg?
Kalundborg sits at 55.7°N, 11.1°E, 3 m above sea level, in Denmark. The nearest listed city is Slagelse, 35 km away.
Topography around Kalundborg
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kalundborg.
Within 3 km, the terrain around Kalundborg has only modest variations in elevation — a maximum elevation change of 62 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 83 m; within 80 km, only modest variations in elevation — a maximum elevation change of 149 m.
The land around Kalundborg is covered by cropland (22%), water (22%) and grassland (20%) within 3 km, water (61%) and cropland (20%) within 16 km, and water (53%) and cropland (25%) within 80 km.
Denmark travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E / F / K
- 230 V · 50 Hz
- Prices
- ≈ 92% of US
- price level, 2025
- GDP per capita
- $76,970
- 2025
- Happiness
- 7.5 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 0.8
- per 100k, 2023
- Road deaths
- 3.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 611
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Kalundborg (55.6795°, 11.0886°, elevation 3 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.