Sneek weather in September

In September, Sneek sees average daytime highs of 18°C and overnight lows near 12°C, with 78 mm of rain across 12.5 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 16% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Sneek's 6th-clearest and 7th-windiest month. For the whole year in context, see Sneek's year-round climate.

Daytime high
18°
4th warmest
Overnight low
12°
9th coldest
Rainfall
78 mm
12.5 wet days
Daylight
12 h 24 min
6:19 AM – 6:44 PM
Cloud cover
66%
6th clearest
Wind
17 km/h
7th windiest
Solar energy
2.99 kWh/m²
Travel score
5.2
out of 10

Sneek is town in Súdwest-Fryslân, Netherlands.

Density
964/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 19°C in the first days to 16°C by the end.

A typical September day in Sneek 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 14°C and 21°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)
11913
21913
31913
41913
51913
61913
71813
81813
91813
101813
111813
121812
131812
141812
151812
161812
171712
181712
191712
201712
211712
221711
231711
241711
251611
261611
271611
281611
291611
301611

How September really feels in Sneek

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.

Sneek 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 / 6813.11.27.90.1
Feb / 5310.81.79.50.2
Mar / 5211.60.811.51.4
Apr12° / 459.7013.63.2
May16° / 6311.2015.54.7
Jun18° / 12°7212.1016.65.5
Jul20° / 14°8813.6016.25.9
Aug20° / 15°9214.3014.55.7
Sep18° / 12°7812.5012.45.2
Oct13° / 7914.1010.33.4
Nov / 6814.10.18.41.6
Dec / 7514.11.47.40.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% 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 (%)
14060
24060
34060
43961
54060
64060
73961
83961
93961
103862
113862
123862
133862
143862
153763
163763
173763
183763
193763
203763
213763
223664
233565
243565
253466
263466
273466
283268
293268
303268

Chance of precipitation in September

Any precipitation

Sneek gets around 78 mm of rain over 12.5 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 43% and peaks near 48% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
145
244
344
444
543
643
743
843
943
1043
1143
1242
1342
1442
1541
1641
1741
1841
1941
2041
2141
2242
2342
2443
2544
2645
2746
2846
2947
3048

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 (%)
14839121
24939111
35038111
45337100
55436100
65535100
75634100
8583390
9593290
10603190
11623080
12632980
13642970
14652870
15672760
16682660
17702550
18702550
19712540
20722530
21722530
22722530
23732520
24732520
25752410
26752410
27762310
28762310
29772210
30782110

Wind in September

Winds average 17 km/h in September.

Across September, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 30 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 126 minutes over September. Sunrise moves from 5:53 AM to 6:44 AM, and sunset from 7:21 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:537:21
213.45:557:19
313.35:567:16
413.35:587:14
513.26:007:11
613.16:027:09
713.16:037:07
813.06:057:04
912.96:077:02
1012.86:096:59
1112.86:116:57
1212.76:126:54
1312.66:146:52
1412.66:166:49
1512.56:186:47
1612.46:196:44
1712.36:216:41
1812.36:236:39
1912.26:256:36
2012.16:266:34
2112.16:286:31
2212.06:306:29
2311.96:326:26
2411.86:346:24
2511.86:356:21
2611.76:376:19
2711.66:396:16
2811.66:416:14
2911.56:436:11
3011.46:446:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.99 kWh/m².

For context, solar energy here swings from a low near 0.53 kWh/m² to a high of 5.52 kWh/m² in June across the year — September's 2.99 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.5Moderate
43.5Moderate
53.5Moderate
63.4Moderate
73.4Moderate
83.3Moderate
93.3Moderate
103.2Moderate
113.2Moderate
123.1Moderate
133.1Moderate
143.1Moderate
153.0Moderate
163.0Moderate
172.9Moderate
182.9Moderate
192.9Moderate
202.8Moderate
212.8Moderate
222.7Moderate
232.7Moderate
242.6Moderate
252.6Moderate
262.5Moderate
272.5Moderate
282.4Moderate
292.4Moderate
302.3Moderate
Planning a trip in September

Is September a good time to visit Sneek?

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

5.2
Sightseeing
4th-best month of the year
1.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Sneek for sightseeing.

What to pack for Sneek in September

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

In September, Sneek sees daytime highs around 18°C and nights near 12°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Sneek in September

The nearest coast averages about 17°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 22 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
Jun15Cool
Jul18Cool
Aug19Cool
Sep17Cool
Oct14Bracing
Nov11Bracing
Dec8Bracing

UV index in Sneek 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 Sneek peaks around June 23 at about 6 (high) — a little sun protection helps at midday. 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
May5High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low
Location & terrain

Where is Sneek?

Sneek sits at 53.0°N, 5.7°E, 6 m above sea level, in The Netherlands. The nearest listed city is Heerenveen, 19 km away.

HeerenveenLeeuwardenHarlingenDrachtenEmmeloordSteenwijkUrkGiethoorn

Topography around Sneek

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

Within 3 km, the terrain around Sneek has only modest variations in elevation — a maximum elevation change of 11 m around an average of 0 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 28 m; within 80 km, only modest variations in elevation — a maximum elevation change of 87 m.

The land around Sneek is covered by grassland (55%) and artificial surfaces (23%) within 3 km, grassland (77%) within 16 km, and water (45%) and grassland (30%) within 80 km.

3 km
11 m
16 km
28 m
80 km
87 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Heerenveen 19 km · Leeuwarden 21 km · Harlingen 22 km · Drachten 31 km · Emmeloord 36 km · Steenwijk 41 km · Urk 41 km · Giethoorn 43 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 Sneek (53.033°, 5.6589°, elevation 6 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).