London weather in October

In October, London sees average daytime highs of 14°C and overnight lows near 6°C, with 86 mm of precipitation across 11.8 wet days and about 10.8 hours of daylight. It is the 6th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 17°C in the first days to 11°C by the end. The sky is clear or mostly clear about 24% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 10 h 06 min by month's end. Set against the rest of the year, October is London's 6th-clearest and 7th-windiest month. For the whole year in context, see London's year-round climate.

Daytime high
14°
6th warmest
Overnight low
7th coldest
Precipitation
86 mm
11.8 wet days
Daylight
10 h 48 min
6:46 AM – 5:34 PM
Cloud cover
64%
6th clearest
Wind
13 km/h
7th windiest
Solar energy
2.82 kWh/m²
Travel score
4.1
out of 10

London is city in Southwestern Ontario, Canada.

Air quality
Good
PM2.5 7 µg/m³ · 2019
Density
1,004/km²
people per km²
Founded
1826

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 17°C in the first days to 11°C by the end.

A typical October day in London reaches about 14°C in the afternoon and slips back to 6°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 20°C. Set against its neighbours, October runs about 7°C cooler than September and about 7°C warmer than November.

10°20°151015202531
Avg high (°C)Avg low (°C)
1188
2188
3178
4178
5178
6177
7177
8167
9167
10167
11166
12156
13156
14156
15156
16146
17145
18145
19135
20135
21135
22135
23124
24124
25124
26124
27124
28113
29113
30113
31113

How October really feels in London

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 4 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
4
wind chill below the day's low

The story in October is cold — wind chill drags the overnight "feels like" below the raw low.

London weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -8°7211.79.69.20.0
Feb-0° / -9°589.58.210.20.0
Mar / -4°7010.95.711.60.4
Apr12° / 9312.42.213.13.1
May19° / 9812.5014.45.6
Jun24° / 14°10212015.16.5
Jul26° / 16°10011.9014.86.5
Aug25° / 15°8410.6013.86.8
Sep21° / 11°869.7012.36.6
Oct14° / 8611.80.210.84.1
Nov / 7711.13.99.51.0
Dec / -5°6811.28.18.90.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 60%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24852
34852
44852
54852
64753
74753
84654
94555
104555
114555
124456
134357
144357
154159
164060
173961
183763
193763
203565
213565
223466
233367
243268
253268
263169
273268
283169
293169
303268
313169

Chance of precipitation in October

Any precipitationSnow

London gets around 86 mm of rain and snow over 11.8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 37% and peaks near 41% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1360
2360
3360
4350
5350
6350
7350
8340
9340
10340
11340
12340
13350
14350
15360
16370
17371
18381
19391
20401
21401
22411
23411
24412
25412
26412
27402
28402
29393
30383
31373

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October 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%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1791272
2791272
3811162
4811162
5821062
6841051
7841051
886941
986941
1087841
1188831
1289731
1389731
1491621
1592620
1693610
1793610
1894510
1994510
2094510
2194510
2295410
2396400
2496400
2596400
2696400
2797300
2897300
2997300
3097300
3197300

Wind in October

Winds average 13 km/h in October.

Across October, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
112light 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
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
3114light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over October. Sunrise moves from 6:28 AM to 7:05 AM, and sunset from 6:00 PM to 5:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:286:00
211.56:295:58
311.46:305:56
411.46:315:55
511.36:335:53
611.36:345:51
711.26:355:49
811.26:365:48
911.16:375:46
1011.16:395:44
1111.06:405:42
1211.06:415:41
1310.96:425:39
1410.96:435:37
1510.96:455:36
1610.86:465:34
1710.86:475:32
1810.76:485:31
1910.76:505:29
2010.66:515:28
2110.66:525:26
2210.56:535:25
2310.56:555:23
2410.46:565:22
2510.46:575:20
2610.36:585:19
2710.37:005:17
2810.27:015:16
2910.27:025:15
3010.27:045:13
3110.17:055:12

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.82 kWh/m².

For context, solar energy here swings from a low near 1.32 kWh/m² to a high of 6.57 kWh/m² in June across the year — October's 2.82 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.5Moderate
33.5Moderate
43.4Moderate
53.4Moderate
63.4Moderate
73.3Moderate
83.3Moderate
93.2Moderate
103.1Moderate
113.1Moderate
123.0Moderate
133.0Moderate
142.9Moderate
152.9Moderate
162.8Moderate
172.8Moderate
182.7Moderate
192.7Moderate
202.6Moderate
212.6Moderate
222.5Moderate
232.5Moderate
242.4Moderate
252.4Moderate
262.4Moderate
272.3Moderate
282.3Moderate
292.3Moderate
302.2Moderate
312.2Moderate
Planning a trip in October

Is October a good time to visit London?

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

4.1
Sightseeing
6th-best month of the year
0.5
Beach & pool
6th-best month of the year

October is a reasonable time to visit London for sightseeing.

What to pack for London in October

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

In October, London sees daytime highs around 14°C and nights near 6°C. Worth packing: a warm layer and rain gear. About 12 days see rain.

a warm layerrain gear

Sea temperature near London in October

The nearest coast averages about 16°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 41 km away) is warmest in August at about 23°C and coldest in February near 1°C.

It's comfortable for a long swim from Jul 5 to Sep 20 — about 2.6 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr4Bracing
May10Bracing
Jun17Cool
Jul22Refreshing
Aug23Refreshing
Sep21Refreshing
Oct16Cool
Nov10Bracing
Dec5Bracing

UV index in London in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 London peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5High
May7High
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is London?

London sits at 43.0°N, 81.2°W, 252 m above sea level, in Canada. The nearest listed city is St. Thomas, 24 km away.

Topography around London

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

Within 3 km, the terrain around London has only modest variations in elevation — a maximum elevation change of 62 m around an average of 253 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 118 m; within 80 km, significant variations in elevation — a maximum elevation change of 271 m.

The land around London is covered by artificial surfaces (53%) and trees (36%) within 3 km, cropland (48%) and trees (24%) within 16 km, and cropland (57%) and water (22%) within 80 km.

3 km
62 m
16 km
118 m
80 km
271 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: St. Thomas 24 km · Strathroy 32 km · Woodstock 43 km · Tillsonburg 43 km · Stratford 48 km · Norfolk County 71 km · Brant 74 km · Forest Heights 75 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 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 London (42.9834°, -81.233°, elevation 252 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).