Hilversum weather in September

In September, Hilversum sees average daytime highs of 19°C and overnight lows near 11°C, with 67 mm of rain across 12 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 20°C in the first days to 17°C by the end. The sky is clear or mostly clear about 15% 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 Hilversum's 5th-clearest and 9th-windiest month. For the whole year in context, see Hilversum's year-round climate.

Daytime high
19°
4th warmest
Overnight low
11°
9th coldest
Rainfall
67 mm
12 wet days
Daylight
12 h 24 min
6:22 AM – 6:46 PM
Cloud cover
67%
5th clearest
Wind
13 km/h
9th windiest
Solar energy
2.96 kWh/m²
Travel score
5.5
out of 10

Hilversum is town and municipality in North Holland, the Netherlands.

Air quality
Moderate
PM2.5 10.3 µg/m³ · 2017
Density
1,809/km²
people per km²

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 20°C in the first days to 17°C by the end.

A typical September day in Hilversum reaches about 19°C in the afternoon and slips back to 11°C overnight — a 8°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)
12012
22012
32012
42012
52012
62012
72012
81912
91912
101912
111912
121911
131911
141911
151911
161911
171811
181811
191811
201811
211811
221810
231810
241810
251710
261710
271710
281710
291710
301710

How September really feels in Hilversum

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.

Hilversum 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 / 6412.61.280.3
Feb / 5410.71.59.50.6
Mar10° / 5511.50.811.52.0
Apr14° / 5111.30.113.63.8
May17° / 6311.8015.45.3
Jun20° / 12°6711.7016.45.8
Jul22° / 14°8214.10166.0
Aug22° / 14°8113.1014.56.0
Sep19° / 11°6712012.45.5
Oct14° / 6512010.33.8
Nov / 6112.30.38.51.8
Dec / 7013.11.37.60.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23664
33664
43664
53664
63763
73763
83664
93664
103763
113763
123664
133664
143664
153763
163664
173664
183565
193664
203664
213565
223565
233565
243268
253268
263268
273169
283169
293070
302971

Chance of precipitation in September

Any precipitation

Hilversum gets around 67 mm of rain over 12 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 43% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
141
241
341
440
540
640
740
840
940
1040
1140
1239
1339
1439
1538
1638
1738
1838
1938
2038
2139
2239
2339
2440
2540
2641
2742
2842
2942
3043

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 67% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15435101
2563491
3563491
4573391
5573391
6593290
7603280
8613180
9613180
10633070
11642970
12642970
13662860
14672760
15682750
16692650
17712540
18712540
19722530
20732430
21742420
22732520
23732520
24742510
25752410
26752410
27752410
28762310
29762310
30772210

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light 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 5:56 AM to 6:46 AM, and sunset from 7:22 PM to 6:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:567:22
213.45:587:19
313.36:007:17
413.26:017:15
513.26:037:12
613.16:057:10
713.06:067:08
813.06:087:05
912.96:107:03
1012.86:117:00
1112.76:136:58
1212.76:156:55
1312.66:176:53
1412.56:186:50
1512.56:206:48
1612.46:226:46
1712.36:236:43
1812.36:256:41
1912.26:276:38
2012.16:286:36
2112.16:306:33
2212.06:326:31
2311.96:346:28
2411.86:356:26
2511.86:376:24
2611.76:396:21
2711.66:416:19
2811.66:426:16
2911.56:446:14
3011.46:466:11

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.96 kWh/m².

For context, solar energy here swings from a low near 0.56 kWh/m² to a high of 5.26 kWh/m² in June across the year — September's 2.96 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.5Moderate
23.5Moderate
33.5Moderate
43.4Moderate
53.4Moderate
63.3Moderate
73.3Moderate
83.3Moderate
93.2Moderate
103.2Moderate
113.1Moderate
123.1Moderate
133.1Moderate
143.0Moderate
153.0Moderate
163.0Moderate
172.9Moderate
182.9Moderate
192.8Moderate
202.8Moderate
212.7Moderate
222.7Moderate
232.6Moderate
242.6Moderate
252.5Moderate
262.5Moderate
272.5Moderate
282.4Moderate
292.4Moderate
302.3Moderate
Planning a trip in September

Is September a good time to visit Hilversum?

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

5.5
Sightseeing
4th-best month of the year
2.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Hilversum for sightseeing.

What to pack for Hilversum in September

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

In September, Hilversum sees daytime highs around 19°C and nights near 11°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Hilversum 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 56 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 Hilversum 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 Hilversum peaks around July 14 at about 6 (high) — a little sun protection helps at midday. 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 14UV 6Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May5Moderate
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Hilversum?

Hilversum sits at 52.2°N, 5.2°E, 7 m above sea level, in The Netherlands. The nearest listed city is Bussum, 6.0 km away.

Topography around Hilversum

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

Within 3 km, the terrain around Hilversum has only modest variations in elevation — a maximum elevation change of 43 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 73 m; within 80 km, only modest variations in elevation — a maximum elevation change of 139 m.

The land around Hilversum is covered by trees (52%) and artificial surfaces (30%) within 3 km, grassland (36%) and trees (31%) within 16 km, and grassland (34%) and water (23%) within 80 km.

3 km
43 m
16 km
73 m
80 km
139 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Bussum 6.0 km · Baarn 8.0 km · Naarden 8.0 km · Huizen 10 km · Soest 10 km · Bilthoven 11 km · Weesp 13 km · Maarssen 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 Hilversum (52.2233°, 5.1764°, elevation 7 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).