Maassluis weather in May
In May, Maassluis sees average daytime highs of 16°C and overnight lows near 10°C, with 57 mm of rain across 11.2 wet days and about 15.4 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.
Highs climb over the month, from about 15°C in the first days to 17°C by the end. The sky is clear or mostly clear about 24% of the time in May, and the air most often feels dry.
Daylight stretches from about 14 h 36 min at the start of May to 16 h 06 min by month's end. Set against the rest of the year, May is Maassluis's 3rd-clearest and 7th-windiest month. For the whole year in context, see Maassluis's year-round climate.
- Daytime high
- 16°
- 5th warmest
- Overnight low
- 10°
- 8th coldest
- Rainfall
- 57 mm
- 11.2 wet days
- Daylight
- 15 h 24 min
- 4:57 AM – 8:22 PM
- Cloud cover
- 63%
- 3rd clearest
- Wind
- 16 km/h
- 7th windiest
- Solar energy
- 5.42 kWh/m²
- Travel score
- 4.9
- out of 10
Maassluis is city and municipality in South Holland, the Netherlands.
- Air quality
- Moderate
- PM2.5 12.2 µg/m³ · 2019
- Density
- 3,230/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in May
Highs climb over the month, from about 15°C in the first days to 17°C by the end.
A typical May day in Maassluis reaches about 16°C in the afternoon and slips back to 10°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 22°C. Set against its neighbours, May runs about 3°C warmer than April and about 3°C cooler than June.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 |
| Avg low (°C) | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 15 | 8 |
| 2 | 15 | 8 |
| 3 | 15 | 8 |
| 4 | 15 | 8 |
| 5 | 15 | 8 |
| 6 | 15 | 8 |
| 7 | 15 | 9 |
| 8 | 15 | 9 |
| 9 | 15 | 9 |
| 10 | 16 | 9 |
| 11 | 16 | 9 |
| 12 | 16 | 9 |
| 13 | 16 | 9 |
| 14 | 16 | 9 |
| 15 | 16 | 9 |
| 16 | 16 | 10 |
| 17 | 16 | 10 |
| 18 | 16 | 10 |
| 19 | 16 | 10 |
| 20 | 16 | 10 |
| 21 | 17 | 10 |
| 22 | 17 | 10 |
| 23 | 17 | 10 |
| 24 | 17 | 10 |
| 25 | 17 | 11 |
| 26 | 17 | 11 |
| 27 | 17 | 11 |
| 28 | 17 | 11 |
| 29 | 17 | 11 |
| 30 | 17 | 11 |
| 31 | 18 | 11 |
How May really feels in Maassluis
Once humidity and wind are folded in, May 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.
May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Maassluis weather by month
How May compares with the rest of the year at a glance. May is the 5th-warmest and 9th-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 May
The sky is clear or mostly clear about 24% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 59%.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 39 | 39 | 39 | 40 | 42 | 42 | 42 | 42 | 43 | 44 | 43 | 43 | 43 | 43 | 43 | 43 | 42 | 42 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 39 | 39 | 39 | 38 | 38 | 38 |
| Cloudier (%) | 61 | 61 | 61 | 60 | 58 | 58 | 58 | 58 | 57 | 56 | 57 | 57 | 57 | 57 | 57 | 57 | 58 | 58 | 59 | 59 | 59 | 59 | 60 | 60 | 60 | 61 | 61 | 61 | 62 | 62 | 62 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 39 | 61 |
| 2 | 39 | 61 |
| 3 | 39 | 61 |
| 4 | 40 | 60 |
| 5 | 42 | 58 |
| 6 | 42 | 58 |
| 7 | 42 | 58 |
| 8 | 42 | 58 |
| 9 | 43 | 57 |
| 10 | 44 | 56 |
| 11 | 43 | 57 |
| 12 | 43 | 57 |
| 13 | 43 | 57 |
| 14 | 43 | 57 |
| 15 | 43 | 57 |
| 16 | 43 | 57 |
| 17 | 42 | 58 |
| 18 | 42 | 58 |
| 19 | 41 | 59 |
| 20 | 41 | 59 |
| 21 | 41 | 59 |
| 22 | 41 | 59 |
| 23 | 40 | 60 |
| 24 | 40 | 60 |
| 25 | 40 | 60 |
| 26 | 39 | 61 |
| 27 | 39 | 61 |
| 28 | 39 | 61 |
| 29 | 38 | 62 |
| 30 | 38 | 62 |
| 31 | 38 | 62 |
Chance of precipitation in May
Maassluis gets around 57 mm of rain over 11.2 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 37% and peaks near 39% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 38 | 38 | 38 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 38 | 38 | 39 |
| Rain chance (%) | |
|---|---|
| 1 | 38 |
| 2 | 38 |
| 3 | 38 |
| 4 | 37 |
| 5 | 37 |
| 6 | 37 |
| 7 | 36 |
| 8 | 36 |
| 9 | 36 |
| 10 | 36 |
| 11 | 36 |
| 12 | 36 |
| 13 | 36 |
| 14 | 36 |
| 15 | 36 |
| 16 | 36 |
| 17 | 36 |
| 18 | 36 |
| 19 | 36 |
| 20 | 36 |
| 21 | 36 |
| 22 | 37 |
| 23 | 37 |
| 24 | 37 |
| 25 | 37 |
| 26 | 37 |
| 27 | 37 |
| 28 | 37 |
| 29 | 38 |
| 30 | 38 |
| 31 | 39 |
Humidity in May
Most of May feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the dry band about 92% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 99 | 99 | 99 | 98 | 98 | 98 | 97 | 97 | 97 | 97 | 96 | 96 | 95 | 95 | 95 | 94 | 94 | 93 | 93 | 91 | 90 | 90 | 89 | 88 | 87 | 86 | 83 | 82 | 81 | 80 | 78 |
| Comfortable (%) | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 13 | 15 | 16 | 17 | 18 | 19 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 99 | 1 | 0 |
| 2 | 99 | 1 | 0 |
| 3 | 99 | 1 | 0 |
| 4 | 98 | 2 | 0 |
| 5 | 98 | 2 | 0 |
| 6 | 98 | 2 | 0 |
| 7 | 97 | 3 | 0 |
| 8 | 97 | 3 | 0 |
| 9 | 97 | 3 | 0 |
| 10 | 97 | 3 | 0 |
| 11 | 96 | 4 | 0 |
| 12 | 96 | 4 | 0 |
| 13 | 95 | 5 | 0 |
| 14 | 95 | 5 | 0 |
| 15 | 95 | 5 | 0 |
| 16 | 94 | 6 | 0 |
| 17 | 94 | 6 | 0 |
| 18 | 93 | 7 | 0 |
| 19 | 93 | 7 | 0 |
| 20 | 91 | 8 | 1 |
| 21 | 90 | 9 | 1 |
| 22 | 90 | 9 | 1 |
| 23 | 89 | 10 | 1 |
| 24 | 88 | 11 | 1 |
| 25 | 87 | 12 | 1 |
| 26 | 86 | 13 | 1 |
| 27 | 83 | 15 | 2 |
| 28 | 82 | 16 | 2 |
| 29 | 81 | 17 | 2 |
| 30 | 80 | 18 | 2 |
| 31 | 78 | 19 | 3 |
Wind in May
Winds average 16 km/h in May.
Across May, 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| 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 | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 16 | light breeze |
| 2 | 16 | light breeze |
| 3 | 16 | light breeze |
| 4 | 17 | light breeze |
| 5 | 17 | light breeze |
| 6 | 17 | light breeze |
| 7 | 17 | light breeze |
| 8 | 17 | light breeze |
| 9 | 17 | light breeze |
| 10 | 17 | light breeze |
| 11 | 17 | light breeze |
| 12 | 17 | light breeze |
| 13 | 16 | light breeze |
| 14 | 16 | light breeze |
| 15 | 16 | light breeze |
| 16 | 16 | light breeze |
| 17 | 16 | light breeze |
| 18 | 16 | light breeze |
| 19 | 16 | light breeze |
| 20 | 16 | light breeze |
| 21 | 16 | light breeze |
| 22 | 16 | light breeze |
| 23 | 16 | light breeze |
| 24 | 16 | light breeze |
| 25 | 16 | light breeze |
| 26 | 16 | light breeze |
| 27 | 16 | light breeze |
| 28 | 16 | light breeze |
| 29 | 16 | light breeze |
| 30 | 16 | light breeze |
| 31 | 16 | light breeze |
Sunrise & sunset in May
Daylight runs from about 14 h 36 min at the start of May to 16 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 90 minutes over May. Sunrise moves from 5:23 AM to 4:38 AM, and sunset from 7:57 PM to 8:43 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.6 | 14.6 | 14.7 | 14.8 | 14.8 | 14.9 | 14.9 | 15.0 | 15.0 | 15.1 | 15.2 | 15.2 | 15.3 | 15.3 | 15.4 | 15.4 | 15.5 | 15.5 | 15.6 | 15.6 | 15.7 | 15.7 | 15.8 | 15.8 | 15.8 | 15.9 | 15.9 | 16.0 | 16.0 | 16.0 | 16.1 |
| Sunrise (AM) | 5:23 | 5:21 | 5:19 | 5:17 | 5:15 | 5:14 | 5:12 | 5:10 | 5:08 | 5:06 | 5:05 | 5:03 | 5:01 | 5:00 | 4:58 | 4:57 | 4:55 | 4:54 | 4:52 | 4:51 | 4:50 | 4:48 | 4:47 | 4:46 | 4:45 | 4:43 | 4:42 | 4:41 | 4:40 | 4:39 | 4:38 |
| Sunset (PM) | 7:57 | 7:59 | 8:01 | 8:02 | 8:04 | 8:06 | 8:07 | 8:09 | 8:11 | 8:12 | 8:14 | 8:15 | 8:17 | 8:19 | 8:20 | 8:22 | 8:23 | 8:25 | 8:26 | 8:28 | 8:29 | 8:31 | 8:32 | 8:34 | 8:35 | 8:36 | 8:38 | 8:39 | 8:40 | 8:41 | 8:43 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.6 | 5:23 | 7:57 |
| 2 | 14.6 | 5:21 | 7:59 |
| 3 | 14.7 | 5:19 | 8:01 |
| 4 | 14.8 | 5:17 | 8:02 |
| 5 | 14.8 | 5:15 | 8:04 |
| 6 | 14.9 | 5:14 | 8:06 |
| 7 | 14.9 | 5:12 | 8:07 |
| 8 | 15.0 | 5:10 | 8:09 |
| 9 | 15.0 | 5:08 | 8:11 |
| 10 | 15.1 | 5:06 | 8:12 |
| 11 | 15.2 | 5:05 | 8:14 |
| 12 | 15.2 | 5:03 | 8:15 |
| 13 | 15.3 | 5:01 | 8:17 |
| 14 | 15.3 | 5:00 | 8:19 |
| 15 | 15.4 | 4:58 | 8:20 |
| 16 | 15.4 | 4:57 | 8:22 |
| 17 | 15.5 | 4:55 | 8:23 |
| 18 | 15.5 | 4:54 | 8:25 |
| 19 | 15.6 | 4:52 | 8:26 |
| 20 | 15.6 | 4:51 | 8:28 |
| 21 | 15.7 | 4:50 | 8:29 |
| 22 | 15.7 | 4:48 | 8:31 |
| 23 | 15.8 | 4:47 | 8:32 |
| 24 | 15.8 | 4:46 | 8:34 |
| 25 | 15.8 | 4:45 | 8:35 |
| 26 | 15.9 | 4:43 | 8:36 |
| 27 | 15.9 | 4:42 | 8:38 |
| 28 | 16.0 | 4:41 | 8:39 |
| 29 | 16.0 | 4:40 | 8:40 |
| 30 | 16.0 | 4:39 | 8:41 |
| 31 | 16.1 | 4:38 | 8:43 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 5.42 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 — May's 5.42 kWh/m² sits near the top of that range.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 5.0 | 5.1 | 5.1 | 5.1 | 5.2 | 5.2 | 5.2 | 5.3 | 5.3 | 5.3 | 5.3 | 5.4 | 5.4 | 5.4 | 5.4 | 5.4 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.6 | 5.6 | 5.6 | 5.6 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 5.0 | Bright |
| 2 | 5.1 | Bright |
| 3 | 5.1 | Bright |
| 4 | 5.1 | Bright |
| 5 | 5.2 | Bright |
| 6 | 5.2 | Bright |
| 7 | 5.2 | Bright |
| 8 | 5.3 | Bright |
| 9 | 5.3 | Bright |
| 10 | 5.3 | Bright |
| 11 | 5.3 | Bright |
| 12 | 5.4 | Bright |
| 13 | 5.4 | Bright |
| 14 | 5.4 | Bright |
| 15 | 5.4 | Bright |
| 16 | 5.4 | Bright |
| 17 | 5.5 | Bright |
| 18 | 5.5 | Bright |
| 19 | 5.5 | Bright |
| 20 | 5.5 | Bright |
| 21 | 5.5 | Bright |
| 22 | 5.5 | Bright |
| 23 | 5.5 | Bright |
| 24 | 5.5 | Bright |
| 25 | 5.5 | Bright |
| 26 | 5.5 | Bright |
| 27 | 5.5 | Bright |
| 28 | 5.6 | Bright |
| 29 | 5.6 | Bright |
| 30 | 5.6 | Bright |
| 31 | 5.6 | Bright |
Is May a good time to visit Maassluis?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a reasonable time to visit Maassluis for sightseeing.
What to pack for Maassluis in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Maassluis sees daytime highs around 16°C and nights near 10°C. Worth packing: a warm layer, rain gear and sun protection. About 11 days see rain.
Sea temperature near Maassluis in May
The nearest coast averages about 12°C in May — 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 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 | 9 | 12 | 15 | 17 | 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 | 6 | Bracing |
| Mar | 6 | Bracing |
| Apr | 9 | Bracing |
| May | 12 | Bracing |
| Jun | 15 | Bracing |
| Jul | 17 | Cool |
| Aug | 19 | Cool |
| Sep | 18 | Cool |
| Oct | 15 | Bracing |
| Nov | 11 | Bracing |
| Dec | 8 | Bracing |
UV index in Maassluis in May
Clear-sky midday UV in May peaks 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 Maassluis 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 |
Air quality in Maassluis in May
Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.
Air quality in Maassluis is worst in April — around 15 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Seasonal pattern from CAMS reanalysis, scaled to Maassluis's WHO annual average of 12.2 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 12 | 15 | 15 | 14 | 13 | 12 | 13 | 12 | 10 | 10 | 10 |
| Level | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 12 | Good |
| Mar | 15 | Moderate |
| Apr | 15 | Moderate |
| May | 14 | Moderate |
| Jun | 13 | Moderate |
| Jul | 12 | Good |
| Aug | 13 | Moderate |
| Sep | 12 | Moderate |
| Oct | 10 | Good |
| Nov | 10 | Good |
| Dec | 10 | Good |
Where is Maassluis?
Maassluis sits at 51.9°N, 4.3°E, 2 m above sea level, in The Netherlands. The nearest listed city is Vlaardingen, 6.0 km away.
Topography around Maassluis
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Maassluis.
Within 3 km, the terrain around Maassluis has only modest variations in elevation — a maximum elevation change of 25 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 48 m; within 80 km, only modest variations in elevation — a maximum elevation change of 87 m.
The land around Maassluis is covered by grassland (32%) and artificial surfaces (30%) within 3 km, artificial surfaces (29%) and grassland (24%) within 16 km, and water (35%) and grassland (26%) 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 Maassluis (51.9233°, 4.25°, 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).