Nieuw-Vennep weather in September

In September, Nieuw-Vennep sees average daytime highs of 18°C and overnight lows near 13°C, with 81 mm of rain across 12.9 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 16°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 Nieuw-Vennep's 6th-clearest and 7th-windiest month. For the whole year in context, see Nieuw-Vennep's year-round climate.

Daytime high
18°
4th warmest
Overnight low
13°
10th coldest
Rainfall
81 mm
12.9 wet days
Daylight
12 h 24 min
6:24 AM – 6:48 PM
Cloud cover
66%
6th clearest
Wind
16 km/h
7th windiest
Solar energy
3.05 kWh/m²
Travel score
5.3
out of 10

Nieuw-Vennep is village in Haarlemmermeer, Netherlands.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 16°C by the end.

A typical September day in Nieuw-Vennep reaches about 18°C in the afternoon and slips back to 13°C overnight — a 5°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.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11914
21914
31914
41914
51913
61913
71913
81913
91913
101913
111813
121813
131813
141813
151813
161812
171812
181812
191812
201812
211712
221712
231712
241712
251712
261712
271711
281711
291611
301611

How September really feels in Nieuw-Vennep

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.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Nieuw-Vennep 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6913.3180.3
Feb / 56111.49.50.5
Mar / 5511.20.711.51.7
Apr12° / 4910.7013.63.2
May16° / 10°6210.9015.44.8
Jun18° / 12°6611.7016.45.6
Jul21° / 15°8313.40166.0
Aug21° / 15°9013.3014.55.9
Sep18° / 13°8112.9012.45.3
Oct14° / 8413.7010.33.7
Nov10° / 7514.10.28.51.8
Dec / 801417.60.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

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%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
23961
33961
43961
53961
63961
73961
83961
94060
103961
113961
123961
133961
143862
154060
163961
173961
183862
193862
203862
213763
223763
233763
243565
253565
263565
273367
283367
293169
303268

Chance of precipitation in September

Any precipitation

Nieuw-Vennep gets around 81 mm of rain over 12.9 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 44% and peaks near 50% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
144
244
344
444
543
643
743
843
943
1043
1143
1242
1342
1442
1542
1641
1741
1841
1942
2042
2142
2243
2344
2445
2546
2647
2748
2848
2949
3050

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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 62% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
14641121
24840121
34939120
45038120
55137120
65236120
75435110
85534110
95633110
105732110
115931100
126030100
13613090
14622990
15642880
16652870
17672760
18672760
19682750
20692740
21692740
22702730
23692830
24702820
25702820
26712720
27722710
28732610
29732610
30742510

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.

05101520151015202530
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze

Sunrise & sunset in September

DaylightNight

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 5:58 AM to 6:48 AM, and sunset from 7:24 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:587:24
213.46:007:22
313.36:027:19
413.26:037:17
513.26:057:15
613.16:077:12
713.06:087:10
813.06:107:07
912.96:127:05
1012.86:147:02
1112.76:157:00
1212.76:176:58
1312.66:196:55
1412.56:206:53
1512.56:226:50
1612.46:246:48
1712.36:266:45
1812.36:276:43
1912.26:296:40
2012.16:316:38
2112.16:326:36
2212.06:346:33
2311.96:366:31
2411.86:386:28
2511.86:396:26
2611.76:416:23
2711.66:436:21
2811.66:446:18
2911.56:466:16
3011.46:486:14

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.05 kWh/m².

For context, solar energy here swings from a low near 0.57 kWh/m² to a high of 5.51 kWh/m² in June across the year — September's 3.05 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.6Moderate
33.6Moderate
43.6Moderate
53.5Moderate
63.5Moderate
73.4Moderate
83.4Moderate
93.3Moderate
103.3Moderate
113.3Moderate
123.2Moderate
133.2Moderate
143.1Moderate
153.1Moderate
163.0Moderate
173.0Moderate
183.0Moderate
192.9Moderate
202.9Moderate
212.8Moderate
222.8Moderate
232.7Moderate
242.7Moderate
252.6Moderate
262.6Moderate
272.5Moderate
282.5Moderate
292.4Moderate
302.4Moderate
Planning a trip in September

Is September a good time to visit Nieuw-Vennep?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.3
Sightseeing
4th-best month of the year
1.7
Beach & pool
4th-best month of the year

September is a reasonable time to visit Nieuw-Vennep for sightseeing.

What to pack for Nieuw-Vennep in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Nieuw-Vennep sees daytime highs around 18°C and nights near 13°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Nieuw-Vennep 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 21 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.

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan6Bracing
Feb6Bracing
Mar6Bracing
Apr8Bracing
May12Bracing
Jun15Bracing
Jul17Cool
Aug19Cool
Sep18Cool
Oct15Bracing
Nov11Bracing
Dec8Bracing

UV index in Nieuw-Vennep in September

LowModerateHighVery highExtreme

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 Nieuw-Vennep peaks around June 23 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 23UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May5Moderate
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Nieuw-Vennep?

Nieuw-Vennep sits at 52.3°N, 4.6°E, -4 m above sea level, in The Netherlands. The nearest listed city is Hillegom, 4.0 km away.

Topography around Nieuw-Vennep

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nieuw-Vennep.

Within 3 km, the terrain around Nieuw-Vennep has only modest variations in elevation — a maximum elevation change of 12 m around an average of -4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, only modest variations in elevation — a maximum elevation change of 99 m.

The land around Nieuw-Vennep is covered by cropland (53%) within 3 km, grassland (34%) and artificial surfaces (22%) within 16 km, and water (36%) and grassland (28%) within 80 km.

3 km
12 m
16 km
59 m
80 km
99 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Hillegom 4.0 km · Lisse 5.0 km · Hoofddorp 6.0 km · Sassenheim 9.0 km · Aalsmeer 9.0 km · Heemstede 10 km · Merenwijk 13 km · Haarlem 13 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
none 54%Roman Catholic 20%Protestant 15%other 6%

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 Nieuw-Vennep (52.2642°, 4.6306°, elevation -4 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).