Den Helder in Summer
In summer (June, July and August), Den Helder sees average daytime highs around 17°C and overnight lows near 15°C, with 225 mm of rain over about 35 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 14°C in early June to 18°C by late August. The sky is clear or mostly clear about 29% of the time across summer, and the air most often feels dry.
Summer is Den Helder's best season of the year to visit on our travel score. For the whole year in context, see Den Helder's year-round climate.
- Avg daytime high
- 17°C
- warmest season of the year
- Avg overnight low
- 15°C
- Rainfall
- 225 mm
- 35 wet days
- Avg wind
- 23 km/h
- Travel score
- 5.3
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Den Helder in Summer
Over the season highs climb from about 14°C in early June to 18°C by late August.
A typical summer day in Den Helder reaches about 17°C and drops to 15°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Den Helder
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.
Den Helder 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 | 6° / 4° | 73 | 14 | 0.8 | 7.9 | 0.5 |
| Feb | 6° / 4° | 55 | 11.1 | 1.4 | 9.5 | 0.3 |
| Mar | 7° / 5° | 49 | 10.8 | 0.6 | 11.5 | 0.9 |
| Apr | 9° / 7° | 38 | 8.2 | 0 | 13.6 | 2.1 |
| May | 13° / 11° | 50 | 9.3 | 0 | 15.5 | 3.5 |
| Jun | 15° / 14° | 59 | 10.4 | 0 | 16.6 | 4.6 |
| Jul | 18° / 16° | 71 | 11.5 | 0 | 16.2 | 5.7 |
| Aug | 19° / 17° | 95 | 13.1 | 0 | 14.5 | 5.7 |
| Sep | 17° / 15° | 96 | 13.7 | 0 | 12.4 | 4.9 |
| Oct | 14° / 12° | 105 | 15.2 | 0 | 10.3 | 3.4 |
| Nov | 10° / 8° | 93 | 16.6 | 0.2 | 8.4 | 2.0 |
| Dec | 8° / 6° | 88 | 15.6 | 0.7 | 7.4 | 1.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 29% of the time across summer.
Chance of precipitation in Summer
Den Helder gets around 225 mm of rain over 35 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 23 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 16 h 18 min in early June to 13 h 30 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 5.5 kWh/m².
Is summer a good time to visit Den Helder?
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 Den Helder for sightseeing.
What to pack for Den Helder in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Den Helder sees daytime highs around 17°C and nights near 15°C. Worth packing: a warm layer, rain gear, sun protection and a windbreaker. About 35 days see rain.
Sea temperature near Den Helder 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 at the nearest coast (about 13 km away) is warmest in August at about 19°C and coldest in February near 6°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) | 6 | 6 | 6 | 8 | 11 | 15 | 17 | 19 | 17 | 15 | 11 | 8 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 6 | Bracing |
| Feb | 6 | Bracing |
| Mar | 6 | Bracing |
| Apr | 8 | Bracing |
| May | 11 | Bracing |
| Jun | 15 | Bracing |
| Jul | 17 | Cool |
| Aug | 19 | Cool |
| Sep | 17 | Cool |
| Oct | 15 | Bracing |
| Nov | 11 | Bracing |
| Dec | 8 | Bracing |
UV index in Den Helder in Summer
Clear-sky midday UV across summer averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Den Helder peaks around July 14 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (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) | 1 | 1 | 3 | 3 | 5 | 6 | 6 | 6 | 4 | 2 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 3 | Moderate |
| May | 5 | High |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 2 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Den Helder?
Den Helder sits at 53.0°N, 4.8°E, 3 m above sea level, in The Netherlands. The nearest listed city is Julianadorp, 8.0 km away.
Topography around Den Helder
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Den Helder.
Within 3 km, the terrain around Den Helder has only modest variations in elevation — a maximum elevation change of 20 m around an average of 1 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 29 m; within 80 km, only modest variations in elevation — a maximum elevation change of 66 m.
The land around Den Helder is covered by water (54%) and artificial surfaces (22%) within 3 km, water (66%) within 16 km, and water (59%) and grassland (20%) within 80 km.
The Netherlands travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 84% of US
- price level, 2025
- GDP per capita
- $73,684
- 2025
- Happiness
- 7.2 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 0.7
- per 100k, 2023
- Road deaths
- 4
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 624
- 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 Den Helder (52.9599°, 4.7593°, 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.