Carlisle weather in September

In September, Carlisle sees average daytime highs of 16°C and overnight lows near 9°C, with 70 mm of rain across 12.6 wet days and about 12.5 hours of daylight. It is the 4th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 17°C in the first days to 15°C by the end. The sky is clear or mostly clear about 8% 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 24 min by month's end. Set against the rest of the year, September is Carlisle's 8th-clearest and 9th-windiest month. For the whole year in context, see Carlisle's year-round climate.

Daytime high
16°
4th warmest
Overnight low
9th coldest
Rainfall
70 mm
12.6 wet days
Daylight
12 h 24 min
5:53 AM – 6:19 PM
Cloud cover
76%
8th clearest
Wind
13 km/h
9th windiest
Solar energy
2.56 kWh/m²
Travel score
4.4
out of 10

Carlisle is city in Cumberland, Cumbria, England.

Air quality
Moderate
PM2.5 10.8 µg/m³ · 2019
Density
4,152/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 17°C in the first days to 15°C by the end.

A typical September day in Carlisle reaches about 16°C in the afternoon and slips back to 9°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 19°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
61710
71710
81710
91710
101610
111610
121610
13169
14169
15169
16169
17169
18169
19169
20159
21159
22159
23159
24159
25159
26158
27158
28158
29158
30148

How September really feels in Carlisle

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.

Carlisle weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9514.92.37.60.5
Feb / 8013.21.99.30.7
Mar / 6913.11.411.41.5
Apr11° / 6613.30.413.82.6
May14° / 6913.30.115.83.8
Jun17° / 10°7713.90174.7
Jul19° / 11°8115.3016.55.1
Aug18° / 11°8815.3014.75.0
Sep16° / 7012.6012.54.4
Oct12° / 9014010.23.0
Nov / 8914.90.38.11.5
Dec / 10014.81.670.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12377
22377
32278
42377
52377
62377
72278
82179
92179
102179
112179
122179
132179
142179
152179
162179
172179
182179
192179
202179
212278
222278
232278
242278
252377
262377
272377
282377
292476
302377

Chance of precipitation in September

Any precipitation

Carlisle gets around 70 mm of rain over 12.6 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 43% and peaks near 46% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
142
242
342
442
542
643
743
843
943
1043
1143
1243
1343
1442
1542
1642
1741
1841
1940
2040
2140
2241
2341
2442
2543
2644
2745
2845
2946
3046

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 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
181181
282171
382171
483161
583161
683161
784151
884151
984151
1085141
1185141
1286131
1387130
1488120
1589110
1689110
1790100
1890100
1990100
209190
219190
229280
239280
249280
259370
269370
279370
289460
299460
309460

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
713light 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
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 36 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 132 minutes over September. Sunrise moves from 5:24 AM to 6:20 AM, and sunset from 6:59 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:246:59
213.55:266:56
313.45:286:54
413.45:306:51
513.35:326:48
613.25:346:46
713.15:366:43
813.05:386:41
913.05:396:38
1012.95:416:35
1112.85:436:33
1212.75:456:30
1312.75:476:27
1412.65:496:25
1512.55:516:22
1612.45:536:19
1712.45:556:17
1812.35:576:14
1912.25:596:11
2012.16:016:09
2112.16:036:06
2212.06:046:03
2311.96:066:01
2411.86:085:58
2511.86:105:55
2611.76:125:53
2711.66:145:50
2811.56:165:47
2911.46:185:45
3011.46:205:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.56 kWh/m².

For context, solar energy here swings from a low near 0.41 kWh/m² to a high of 4.77 kWh/m² in May across the year — September's 2.56 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.0Moderate
43.0Moderate
53.0Moderate
62.9Moderate
72.9Moderate
82.9Moderate
92.8Moderate
102.8Moderate
112.8Moderate
122.7Moderate
132.7Moderate
142.6Moderate
152.6Moderate
162.5Moderate
172.5Moderate
182.5Moderate
192.4Moderate
202.4Moderate
212.3Moderate
222.3Moderate
232.3Moderate
242.2Moderate
252.2Moderate
262.1Moderate
272.1Moderate
282.0Moderate
292.0Moderate
302.0Dim
Planning a trip in September

Is September a good time to visit Carlisle?

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

4.4
Sightseeing
4th-best month of the year
0.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Carlisle for sightseeing.

What to pack for Carlisle in September

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

In September, Carlisle 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 Carlisle in September

The nearest coast averages about 15°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 28 km away) is warmest in August at about 17°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°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan6Bracing
Feb6Bracing
Mar6Bracing
Apr8Bracing
May11Bracing
Jun14Bracing
Jul16Cool
Aug17Cool
Sep15Cool
Oct13Bracing
Nov11Bracing
Dec8Bracing

UV index in Carlisle 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 Carlisle peaks around June 23 at about 6 (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 23UV 6Dec 20UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5High
Jun6High
Jul6High
Aug6High
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Carlisle?

Carlisle sits at 54.9°N, 2.9°W, 29 m above sea level, in United Kingdom. The nearest listed city is Penrith, 28 km away.

ConsettNewburn

Topography around Carlisle

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

Within 3 km, the terrain around Carlisle has only modest variations in elevation — a maximum elevation change of 53 m around an average of 25 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 430 m; within 80 km, large variations in elevation — a maximum elevation change of 961 m.

The land around Carlisle is covered by grassland (37%), artificial surfaces (37%) and trees (21%) within 3 km, grassland (65%) within 16 km, and grassland (69%) within 80 km.

3 km
53 m
16 km
430 m
80 km
961 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Penrith 28 km · Dumfries 47 km · Workington 48 km · Whitehaven 57 km · Windermere 57 km · Kendal 64 km · Consett 71 km · Newburn 77 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 Carlisle (54.8951°, -2.9382°, elevation 29 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).