Cumbernauld weather in September

In September, Cumbernauld sees average daytime highs of 16°C and overnight lows near 9°C, with 76 mm of rain across 13.1 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 17°C in the first days to 14°C by the end. The sky is clear or mostly clear about 7% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of September to 11 h 18 min by month's end. Set against the rest of the year, September is Cumbernauld's 7th-clearest and 9th-windiest month. For the whole year in context, see Cumbernauld's year-round climate.

Daytime high
16°
4th warmest
Overnight low
9th coldest
Rainfall
76 mm
13.1 wet days
Daylight
12 h 30 min
5:57 AM – 6:24 PM
Cloud cover
77%
7th clearest
Wind
13 km/h
9th windiest
Solar energy
2.4 kWh/m²
Travel score
4.2
out of 10

Cumbernauld is town in North Lanarkshire, Scotland, UK.

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 17°C in the first days to 14°C by the end.

A typical September day in Cumbernauld reaches about 16°C in the afternoon and slips back to 9°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 18°C. Set against its neighbours, September runs about 2°C cooler than August and about 3°C warmer than October.

10°15°20°151015202530
Avg high (°C)Avg low (°C)
11710
21710
31710
41710
51710
61610
71610
81610
91610
101610
111610
12169
13169
14169
15169
16169
17159
18159
19159
20159
21159
22159
23159
24158
25158
26158
27148
28148
29148
30148

How September really feels in Cumbernauld

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.

Cumbernauld weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 11216.43.77.40.4
Feb / 9114.33.19.20.7
Mar / 8414.62.411.41.4
Apr11° / 7013.70.813.82.4
May14° / 7213.50.2163.6
Jun16° / 7914017.24.4
Jul18° / 11°8615016.75.0
Aug18° / 11°9314.9014.84.9
Sep16° / 7613.1012.54.2
Oct12° / 10715.10.110.12.8
Nov / 10015.30.681.4
Dec / 10915.42.56.80.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12179
22179
32080
42080
52179
62179
72080
82080
92080
102080
112080
122080
132080
142179
152179
162179
172179
182179
192179
202278
212278
222278
232278
242278
252179
262179
272179
282179
292179
302179

Chance of precipitation in September

Any precipitation

Cumbernauld gets around 76 mm of rain over 13.1 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 48% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
141
242
342
443
543
644
744
844
944
1044
1144
1244
1344
1443
1543
1643
1742
1842
1942
2042
2142
2242
2343
2444
2545
2646
2747
2847
2948
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 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
185141
286131
386131
486131
586131
686131
786131
887121
987121
1088111
1188111
1289101
1389101
149091
159190
169280
179280
189280
199280
209370
219370
229370
239370
249460
259460
269460
279550
289550
299550
309550

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 36 min at the start of September to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 138 minutes over September. Sunrise moves from 5:26 AM to 6:25 AM, and sunset from 7:05 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:267:05
213.65:287:02
313.55:307:00
413.45:326:57
513.35:346:54
613.25:366:51
713.25:386:49
813.15:406:46
913.05:436:43
1012.95:456:41
1112.95:476:38
1212.85:496:35
1312.75:516:32
1412.65:536:30
1512.55:556:27
1612.55:576:24
1712.45:596:21
1812.36:016:18
1912.26:036:16
2012.16:056:13
2112.16:076:10
2212.06:096:07
2311.96:116:05
2411.86:136:02
2511.76:155:59
2611.76:175:56
2711.66:195:54
2811.56:215:51
2911.46:235:48
3011.36:255:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.4 kWh/m².

For context, solar energy here swings from a low near 0.35 kWh/m² to a high of 4.62 kWh/m² in May across the year — September's 2.4 kWh/m² falls in the middle.

0123151015202530
Solar energy (kWh/m²)Level
12.9Moderate
22.9Moderate
32.9Moderate
42.8Moderate
52.8Moderate
62.8Moderate
72.7Moderate
82.7Moderate
92.7Moderate
102.6Moderate
112.6Moderate
122.5Moderate
132.5Moderate
142.5Moderate
152.5Moderate
162.4Moderate
172.4Moderate
182.3Moderate
192.3Moderate
202.3Moderate
212.2Moderate
222.2Moderate
232.1Moderate
242.1Moderate
252.0Moderate
262.0Moderate
272.0Dim
281.9Dim
291.9Dim
301.9Dim
Planning a trip in September

Is September a good time to visit Cumbernauld?

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

4.2
Sightseeing
4th-best month of the year
0.4
Beach & pool
4th-best month of the year

September is a reasonable time to visit Cumbernauld for sightseeing.

What to pack for Cumbernauld in September

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

In September, Cumbernauld sees daytime highs around 16°C and nights near 9°C. Worth packing: a warm layer and rain gear. About 13 days see rain.

a warm layerrain gear

Sea temperature near Cumbernauld in September

The nearest coast averages about 14°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 53 km away) is warmest in August at about 15°C and coldest in February near 7°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan8Bracing
Feb7Bracing
Mar7Bracing
Apr8Bracing
May10Bracing
Jun13Bracing
Jul15Bracing
Aug15Cool
Sep14Bracing
Oct12Bracing
Nov11Bracing
Dec9Bracing

UV index in Cumbernauld in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cumbernauld peaks around June 20 at about 5 (high) — a little sun protection helps at midday. It bottoms out near December 20 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 20UV 5Dec 20UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5Moderate
Jun5High
Jul5High
Aug5Moderate
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Cumbernauld?

Cumbernauld sits at 55.9°N, 4.0°W, 149 m above sea level, in United Kingdom. The nearest listed city is Airdrie, 9.0 km away.

Topography around Cumbernauld

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

Within 3 km, the terrain around Cumbernauld has only modest variations in elevation — a maximum elevation change of 131 m around an average of 113 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 557 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,200 m.

The land around Cumbernauld is covered by trees (47%), grassland (32%) and artificial surfaces (21%) within 3 km, grassland (54%) and trees (28%) within 16 km, and grassland (59%) within 80 km.

3 km
131 m
16 km
557 m
80 km
1,200 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Airdrie 9.0 km · Coatbridge 10 km · Kirkintilloch 10 km · Viewpark 14 km · Falkirk 14 km · Bellshill 15 km · Bishopbriggs 15 km · Motherwell 18 km

United Kingdom travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G / M
230 V · 50 Hz
Prices
≈ 89% of US
price level, 2025
GDP per capita
$57,602
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2021
Road deaths
3.2
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 60%none 26%Muslim 4%other 2%

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 Cumbernauld (55.9468°, -3.9905°, elevation 149 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).