Spijkenisse weather in September

In September, Spijkenisse sees average daytime highs of 19°C and overnight lows near 12°C, with 64 mm of rain across 11.6 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 20°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 Spijkenisse's 6th-clearest and 9th-windiest month. For the whole year in context, see Spijkenisse's year-round climate.

Daytime high
19°
4th warmest
Overnight low
12°
9th coldest
Rainfall
64 mm
11.6 wet days
Daylight
12 h 24 min
6:25 AM – 6:49 PM
Cloud cover
67%
6th clearest
Wind
14 km/h
9th windiest
Solar energy
3.07 kWh/m²
Travel score
5.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 17°C by the end.

A typical September day in Spijkenisse reaches about 19°C in the afternoon and slips back to 12°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°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)
12013
22013
32013
42013
52013
62013
72013
82013
91912
101912
111912
121912
131912
141912
151912
161912
171912
181812
191812
201811
211811
221811
231811
241811
251811
261711
271711
281711
291711
301711

How September really feels in Spijkenisse

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.

Spijkenisse weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 6112.10.88.10.4
Feb / 5110.81.39.60.7
Mar10° / 5211.30.711.52.1
Apr14° / 4610.8013.63.8
May17° / 5911.8015.45.2
Jun20° / 12°6111.1016.45.9
Jul22° / 14°7512.90166.2
Aug22° / 14°7613.1014.46.1
Sep19° / 12°6411.6012.45.6
Oct15° / 6712.5010.43.9
Nov10° / 6613.20.38.61.9
Dec / 7213.90.97.60.7

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 19% of September, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23763
33763
43763
53763
63763
73763
83664
93664
103763
113763
123664
133664
143664
153664
163664
173664
183664
193664
203763
213664
223664
233664
243466
253466
263367
273268
283070
293070
302971

Chance of precipitation in September

Any precipitation

Spijkenisse gets around 64 mm of rain over 11.6 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 40% and peaks near 45% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
141
240
340
439
539
639
739
839
939
1039
1139
1238
1338
1438
1538
1638
1738
1838
1938
2038
2139
2239
2340
2440
2541
2642
2743
2843
2944
3045

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 65% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15137111
25236111
35335111
45434111
55733100
65832100
75931100
85931100
96030100
106129100
11632890
12632890
13652780
14662680
15672670
16682570
17692560
18702550
19702550
20712540
21712630
22712630
23722620
24722620
25732610
26732610
27732610
28742510
29742510
30752410

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light 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 6:00 AM to 6:49 AM, and sunset from 7:25 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.46:007:25
213.36:027:22
313.36:037:20
413.26:057:18
513.16:077:15
613.16:087:13
713.06:107:10
812.96:127:08
912.96:137:06
1012.86:157:03
1112.76:177:01
1212.76:196:58
1312.66:206:56
1412.56:226:54
1512.56:246:51
1612.46:256:49
1712.36:276:46
1812.36:296:44
1912.26:306:42
2012.16:326:39
2112.16:346:37
2212.06:356:34
2311.96:376:32
2411.86:396:29
2511.86:406:27
2611.76:426:25
2711.66:446:22
2811.66:456:20
2911.56:476:17
3011.46:496:15

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.07 kWh/m².

For context, solar energy here swings from a low near 0.6 kWh/m² to a high of 5.48 kWh/m² in June across the year — September's 3.07 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.6Moderate
43.6Moderate
53.5Moderate
63.5Moderate
73.4Moderate
83.4Moderate
93.4Moderate
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
292.5Moderate
302.4Moderate
Planning a trip in September

Is September a good time to visit Spijkenisse?

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

5.6
Sightseeing
4th-best month of the year
2.2
Beach & pool
4th-best month of the year

September is a reasonable time to visit Spijkenisse for sightseeing.

What to pack for Spijkenisse in September

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

In September, Spijkenisse sees daytime highs around 19°C and nights near 12°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Spijkenisse 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 31 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.

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan6Bracing
Feb5Bracing
Mar6Bracing
Apr9Bracing
May12Bracing
Jun15Bracing
Jul18Cool
Aug19Cool
Sep18Cool
Oct15Bracing
Nov11Bracing
Dec8Bracing

UV index in Spijkenisse 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 Spijkenisse 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 22UV 6Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May5Moderate
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Spijkenisse?

Spijkenisse sits at 51.8°N, 4.3°E, 1 m above sea level, in The Netherlands. The nearest listed city is Hoogvliet, 3.0 km away.

Topography around Spijkenisse

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

Within 3 km, the terrain around Spijkenisse has only modest variations in elevation — a maximum elevation change of 26 m around an average of 1 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 94 m.

The land around Spijkenisse is covered by artificial surfaces (34%), grassland (27%) and trees (22%) within 3 km, cropland (25%), grassland (24%) and artificial surfaces (21%) within 16 km, and water (31%) and grassland (26%) within 80 km.

3 km
26 m
16 km
39 m
80 km
94 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Hoogvliet 3.0 km · Oud-Beijerland 6.0 km · Rhoon 7.0 km · Vlaardingen 8.0 km · Schiedam 9.0 km · Maassluis 10 km · Rotterdam 13 km · Hellevoetsluis 14 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 Spijkenisse (51.845°, 4.3292°, elevation 1 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).