Vlaardingen weather in September
In September, Vlaardingen sees average daytime highs of 18°C and overnight lows near 12°C, with 74 mm of rain across 12.2 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.
Highs ease over the month, from about 19°C in the first days to 17°C by the end. The sky is clear or mostly clear about 17% of the time in September, and the air most often feels dry.
Daylight stretches from about 13 h 24 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Vlaardingen's 6th-clearest and 7th-windiest month. For the whole year in context, see Vlaardingen's year-round climate.
- Daytime high
- 18°
- 4th warmest
- Overnight low
- 12°
- 10th coldest
- Rainfall
- 74 mm
- 12.2 wet days
- Daylight
- 12 h 24 min
- 6:25 AM – 6:49 PM
- Cloud cover
- 66%
- 6th clearest
- Wind
- 16 km/h
- 7th windiest
- Solar energy
- 3.13 kWh/m²
- Travel score
- 5.4
- out of 10
Vlaardingen is city and municipality of the Netherlands.
- Air quality
- Good
- PM2.5 9.9 µg/m³ · 2017
- Density
- 2,762/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Highs ease over the month, from about 19°C in the first days to 17°C by the end.
A typical September day in Vlaardingen reaches about 18°C in the afternoon and slips back to 12°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 22°C. Set against its neighbours, September runs about 3°C cooler than August and about 4°C warmer than October.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Avg low (°C) | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 20 | 14 |
| 2 | 20 | 14 |
| 3 | 19 | 14 |
| 4 | 19 | 13 |
| 5 | 19 | 13 |
| 6 | 19 | 13 |
| 7 | 19 | 13 |
| 8 | 19 | 13 |
| 9 | 19 | 13 |
| 10 | 19 | 13 |
| 11 | 19 | 13 |
| 12 | 19 | 13 |
| 13 | 19 | 13 |
| 14 | 18 | 13 |
| 15 | 18 | 12 |
| 16 | 18 | 12 |
| 17 | 18 | 12 |
| 18 | 18 | 12 |
| 19 | 18 | 12 |
| 20 | 18 | 12 |
| 21 | 18 | 12 |
| 22 | 18 | 12 |
| 23 | 17 | 12 |
| 24 | 17 | 12 |
| 25 | 17 | 12 |
| 26 | 17 | 12 |
| 27 | 17 | 11 |
| 28 | 17 | 11 |
| 29 | 17 | 11 |
| 30 | 17 | 11 |
How September really feels in Vlaardingen
Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Vlaardingen weather by month
How September compares with the rest of the year at a glance. September is the 4th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 6° / 3° | 64 | 12.4 | 0.8 | 8.1 | 0.5 |
| Feb | 7° / 2° | 51 | 11.3 | 1.4 | 9.6 | 0.6 |
| Mar | 9° / 4° | 51 | 11.3 | 0.6 | 11.5 | 1.8 |
| Apr | 13° / 6° | 44 | 10.2 | 0 | 13.6 | 3.4 |
| May | 16° / 10° | 57 | 11.2 | 0 | 15.4 | 4.9 |
| Jun | 19° / 12° | 59 | 11.1 | 0 | 16.4 | 5.7 |
| Jul | 21° / 15° | 74 | 12.8 | 0 | 16 | 6.1 |
| Aug | 21° / 15° | 79 | 13.1 | 0 | 14.4 | 6.0 |
| Sep | 18° / 12° | 74 | 12.2 | 0 | 12.4 | 5.4 |
| Oct | 14° / 9° | 77 | 13.4 | 0 | 10.4 | 3.8 |
| Nov | 10° / 6° | 73 | 14.1 | 0.3 | 8.6 | 1.9 |
| Dec | 7° / 3° | 75 | 14.1 | 0.8 | 7.6 | 0.8 |
Cloud cover in September
The sky is clear or mostly clear about 17% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 63%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 38 | 39 | 39 | 38 | 38 | 38 | 38 | 38 | 38 | 37 | 37 | 35 | 34 | 34 | 33 | 32 | 31 | 31 |
| Cloudier (%) | 60 | 60 | 60 | 60 | 61 | 61 | 61 | 61 | 61 | 61 | 61 | 61 | 62 | 61 | 61 | 62 | 62 | 62 | 62 | 62 | 62 | 63 | 63 | 65 | 66 | 66 | 67 | 68 | 69 | 69 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 40 | 60 |
| 2 | 40 | 60 |
| 3 | 40 | 60 |
| 4 | 40 | 60 |
| 5 | 39 | 61 |
| 6 | 39 | 61 |
| 7 | 39 | 61 |
| 8 | 39 | 61 |
| 9 | 39 | 61 |
| 10 | 39 | 61 |
| 11 | 39 | 61 |
| 12 | 39 | 61 |
| 13 | 38 | 62 |
| 14 | 39 | 61 |
| 15 | 39 | 61 |
| 16 | 38 | 62 |
| 17 | 38 | 62 |
| 18 | 38 | 62 |
| 19 | 38 | 62 |
| 20 | 38 | 62 |
| 21 | 38 | 62 |
| 22 | 37 | 63 |
| 23 | 37 | 63 |
| 24 | 35 | 65 |
| 25 | 34 | 66 |
| 26 | 34 | 66 |
| 27 | 33 | 67 |
| 28 | 32 | 68 |
| 29 | 31 | 69 |
| 30 | 31 | 69 |
Chance of precipitation in September
Vlaardingen gets around 74 mm of rain over 12.2 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 42% and peaks near 48% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 43 | 42 | 42 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 41 | 42 | 42 | 43 | 44 | 45 | 46 | 46 | 47 | 48 |
| Rain chance (%) | |
|---|---|
| 1 | 43 |
| 2 | 42 |
| 3 | 42 |
| 4 | 41 |
| 5 | 41 |
| 6 | 41 |
| 7 | 41 |
| 8 | 41 |
| 9 | 40 |
| 10 | 40 |
| 11 | 40 |
| 12 | 40 |
| 13 | 40 |
| 14 | 40 |
| 15 | 40 |
| 16 | 40 |
| 17 | 40 |
| 18 | 40 |
| 19 | 40 |
| 20 | 41 |
| 21 | 41 |
| 22 | 42 |
| 23 | 42 |
| 24 | 43 |
| 25 | 44 |
| 26 | 45 |
| 27 | 46 |
| 28 | 46 |
| 29 | 47 |
| 30 | 48 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 64% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 50 | 50 | 52 | 54 | 55 | 56 | 57 | 58 | 58 | 60 | 60 | 62 | 62 | 64 | 65 | 67 | 67 | 68 | 69 | 69 | 70 | 69 | 70 | 70 | 71 | 71 | 71 | 72 | 73 | 73 |
| Comfortable (%) | 37 | 37 | 36 | 35 | 34 | 33 | 32 | 31 | 31 | 30 | 30 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 26 | 26 |
| Humid (%) | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 8 | 7 | 6 | 6 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| Muggy (%) | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 50 | 37 | 12 | 1 |
| 2 | 50 | 37 | 12 | 1 |
| 3 | 52 | 36 | 12 | 0 |
| 4 | 54 | 35 | 11 | 0 |
| 5 | 55 | 34 | 11 | 0 |
| 6 | 56 | 33 | 11 | 0 |
| 7 | 57 | 32 | 11 | 0 |
| 8 | 58 | 31 | 11 | 0 |
| 9 | 58 | 31 | 11 | 0 |
| 10 | 60 | 30 | 10 | 0 |
| 11 | 60 | 30 | 10 | 0 |
| 12 | 62 | 29 | 9 | 0 |
| 13 | 62 | 29 | 9 | 0 |
| 14 | 64 | 28 | 8 | 0 |
| 15 | 65 | 28 | 7 | 0 |
| 16 | 67 | 27 | 6 | 0 |
| 17 | 67 | 27 | 6 | 0 |
| 18 | 68 | 27 | 5 | 0 |
| 19 | 69 | 27 | 4 | 0 |
| 20 | 69 | 27 | 4 | 0 |
| 21 | 70 | 27 | 3 | 0 |
| 22 | 69 | 28 | 3 | 0 |
| 23 | 70 | 28 | 2 | 0 |
| 24 | 70 | 28 | 2 | 0 |
| 25 | 71 | 28 | 1 | 0 |
| 26 | 71 | 28 | 1 | 0 |
| 27 | 71 | 28 | 1 | 0 |
| 28 | 72 | 27 | 1 | 0 |
| 29 | 73 | 26 | 1 | 0 |
| 30 | 73 | 26 | 1 | 0 |
Wind in September
Winds average 16 km/h in September.
Across September, daily wind ranges from about 16 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 16 | light breeze |
| 2 | 16 | light breeze |
| 3 | 16 | light breeze |
| 4 | 16 | light breeze |
| 5 | 16 | light breeze |
| 6 | 16 | light breeze |
| 7 | 16 | light breeze |
| 8 | 17 | light breeze |
| 9 | 17 | light breeze |
| 10 | 17 | light breeze |
| 11 | 17 | light breeze |
| 12 | 17 | light breeze |
| 13 | 17 | light breeze |
| 14 | 17 | light breeze |
| 15 | 17 | light breeze |
| 16 | 17 | light breeze |
| 17 | 17 | light breeze |
| 18 | 17 | light breeze |
| 19 | 17 | light breeze |
| 20 | 17 | light breeze |
| 21 | 17 | light breeze |
| 22 | 17 | light breeze |
| 23 | 17 | light breeze |
| 24 | 17 | light breeze |
| 25 | 17 | light breeze |
| 26 | 17 | light breeze |
| 27 | 17 | light breeze |
| 28 | 17 | light breeze |
| 29 | 17 | light breeze |
| 30 | 17 | light breeze |
Sunrise & sunset in September
Daylight runs from about 13 h 24 min at the start of September to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 120 minutes over September. Sunrise moves from 6:00 AM to 6:49 AM, and sunset from 7:25 PM to 6:15 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.4 | 13.3 | 13.3 | 13.2 | 13.1 | 13.1 | 13.0 | 12.9 | 12.9 | 12.8 | 12.7 | 12.7 | 12.6 | 12.5 | 12.5 | 12.4 | 12.3 | 12.3 | 12.2 | 12.1 | 12.1 | 12.0 | 11.9 | 11.8 | 11.8 | 11.7 | 11.6 | 11.6 | 11.5 | 11.4 |
| Sunrise (AM) | 6:00 | 6:02 | 6:03 | 6:05 | 6:07 | 6:08 | 6:10 | 6:12 | 6:13 | 6:15 | 6:17 | 6:18 | 6:20 | 6:22 | 6:23 | 6:25 | 6:27 | 6:28 | 6:30 | 6:32 | 6:34 | 6:35 | 6:37 | 6:39 | 6:40 | 6:42 | 6:44 | 6:45 | 6:47 | 6:49 |
| Sunset (PM) | 7:25 | 7:22 | 7:20 | 7:18 | 7:15 | 7:13 | 7:11 | 7:08 | 7:06 | 7:03 | 7:01 | 6:58 | 6:56 | 6:54 | 6:51 | 6:49 | 6:46 | 6:44 | 6:42 | 6:39 | 6:37 | 6:34 | 6:32 | 6:29 | 6:27 | 6:25 | 6:22 | 6:20 | 6:17 | 6:15 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.4 | 6:00 | 7:25 |
| 2 | 13.3 | 6:02 | 7:22 |
| 3 | 13.3 | 6:03 | 7:20 |
| 4 | 13.2 | 6:05 | 7:18 |
| 5 | 13.1 | 6:07 | 7:15 |
| 6 | 13.1 | 6:08 | 7:13 |
| 7 | 13.0 | 6:10 | 7:11 |
| 8 | 12.9 | 6:12 | 7:08 |
| 9 | 12.9 | 6:13 | 7:06 |
| 10 | 12.8 | 6:15 | 7:03 |
| 11 | 12.7 | 6:17 | 7:01 |
| 12 | 12.7 | 6:18 | 6:58 |
| 13 | 12.6 | 6:20 | 6:56 |
| 14 | 12.5 | 6:22 | 6:54 |
| 15 | 12.5 | 6:23 | 6:51 |
| 16 | 12.4 | 6:25 | 6:49 |
| 17 | 12.3 | 6:27 | 6:46 |
| 18 | 12.3 | 6:28 | 6:44 |
| 19 | 12.2 | 6:30 | 6:42 |
| 20 | 12.1 | 6:32 | 6:39 |
| 21 | 12.1 | 6:34 | 6:37 |
| 22 | 12.0 | 6:35 | 6:34 |
| 23 | 11.9 | 6:37 | 6:32 |
| 24 | 11.8 | 6:39 | 6:29 |
| 25 | 11.8 | 6:40 | 6:27 |
| 26 | 11.7 | 6:42 | 6:25 |
| 27 | 11.6 | 6:44 | 6:22 |
| 28 | 11.6 | 6:45 | 6:20 |
| 29 | 11.5 | 6:47 | 6:17 |
| 30 | 11.4 | 6:49 | 6:15 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 3.13 kWh/m².
For context, solar energy here swings from a low near 0.6 kWh/m² to a high of 5.67 kWh/m² in June across the year — September's 3.13 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.8 | 3.8 | 3.7 | 3.7 | 3.6 | 3.6 | 3.5 | 3.5 | 3.4 | 3.4 | 3.3 | 3.3 | 3.2 | 3.2 | 3.1 | 3.1 | 3.1 | 3.0 | 3.0 | 2.9 | 2.9 | 2.8 | 2.8 | 2.7 | 2.7 | 2.6 | 2.6 | 2.5 | 2.5 | 2.5 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.8 | Moderate |
| 2 | 3.8 | Moderate |
| 3 | 3.7 | Moderate |
| 4 | 3.7 | Moderate |
| 5 | 3.6 | Moderate |
| 6 | 3.6 | Moderate |
| 7 | 3.5 | Moderate |
| 8 | 3.5 | Moderate |
| 9 | 3.4 | Moderate |
| 10 | 3.4 | Moderate |
| 11 | 3.3 | Moderate |
| 12 | 3.3 | Moderate |
| 13 | 3.2 | Moderate |
| 14 | 3.2 | Moderate |
| 15 | 3.1 | Moderate |
| 16 | 3.1 | Moderate |
| 17 | 3.1 | Moderate |
| 18 | 3.0 | Moderate |
| 19 | 3.0 | Moderate |
| 20 | 2.9 | Moderate |
| 21 | 2.9 | Moderate |
| 22 | 2.8 | Moderate |
| 23 | 2.8 | Moderate |
| 24 | 2.7 | Moderate |
| 25 | 2.7 | Moderate |
| 26 | 2.6 | Moderate |
| 27 | 2.6 | Moderate |
| 28 | 2.5 | Moderate |
| 29 | 2.5 | Moderate |
| 30 | 2.5 | Moderate |
Is September a good time to visit Vlaardingen?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a reasonable time to visit Vlaardingen for sightseeing.
What to pack for Vlaardingen in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Vlaardingen sees daytime highs around 18°C and nights near 12°C. Worth packing: rain gear. About 12 days see rain.
Sea temperature near Vlaardingen in September
The nearest coast averages about 18°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 24 km away) is warmest in August at about 19°C and coldest in February near 5°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 | 5 | 6 | 9 | 12 | 15 | 18 | 19 | 18 | 15 | 11 | 8 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 6 | Bracing |
| Feb | 5 | Bracing |
| Mar | 6 | Bracing |
| Apr | 9 | Bracing |
| May | 12 | Bracing |
| Jun | 15 | Bracing |
| Jul | 18 | Cool |
| Aug | 19 | Cool |
| Sep | 18 | Cool |
| Oct | 15 | Bracing |
| Nov | 11 | Bracing |
| Dec | 8 | Bracing |
UV index in Vlaardingen in September
Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Vlaardingen peaks around June 22 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 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 | Moderate | 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 | Moderate |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 2 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Vlaardingen?
Vlaardingen sits at 51.9°N, 4.3°E, 2 m above sea level, in The Netherlands. The nearest listed city is Schiedam, 3.0 km away.
Topography around Vlaardingen
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Vlaardingen.
Within 3 km, the terrain around Vlaardingen has only modest variations in elevation — a maximum elevation change of 26 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 39 m; within 80 km, only modest variations in elevation — a maximum elevation change of 103 m.
The land around Vlaardingen is covered by artificial surfaces (41%) and trees (28%) within 3 km, artificial surfaces (33%) and grassland (26%) within 16 km, and water (33%) and grassland (27%) 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 Vlaardingen (51.9125°, 4.3417°, elevation 2 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).