London weather in June

In June, London sees average daytime highs of 24°C and overnight lows near 14°C, with 102 mm of rain across 12 wet days and about 15.1 hours of daylight. It is the 3rd-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 26°C by the end. The sky is clear or mostly clear about 30% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 54 min at the start of June to 15 h 06 min by month's end. Set against the rest of the year, June is London's 4th-clearest and 9th-windiest month. For the whole year in context, see London's year-round climate.

Daytime high
24°
3rd warmest
Overnight low
14°
10th coldest
Rainfall
102 mm
12 wet days
Daylight
15 h 12 min
4:51 AM – 8:00 PM
Cloud cover
58%
4th clearest
Wind
11 km/h
9th windiest
Solar energy
6.57 kWh/m²
Travel score
6.5
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 June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 26°C by the end.

A typical June day in London reaches about 24°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 30°C. Set against its neighbours, June runs about 5°C warmer than May and about 2°C cooler than July.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12211
22212
32212
42212
52312
62312
72313
82313
92313
102313
112413
122413
132414
142414
152414
162414
172514
182514
192514
202515
212515
222515
232515
242515
252515
262515
272515
282615
292615
302615

How June really feels in London

Once humidity and wind are folded in, June 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

June sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

London weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 1st-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 June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 20% of June, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14555
24654
34654
44654
54654
64654
74654
84654
94753
104852
114852
124852
134852
144951
154951
164951
175050
185050
195149
205149
215248
225149
235248
245347
255347
265347
275446
285545
295545
305545

Chance of precipitation in June

Any precipitation

London gets around 102 mm of rain over 12 wet days in June, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
237
337
437
538
638
738
838
938
1038
1138
1239
1339
1440
1540
1641
1741
1841
1942
2042
2142
2242
2341
2441
2540
2640
2739
2839
2938
3037

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 46% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
165161450
264161460
363171460
462171560
560181561
658191571
758191571
856201671
955211671
1053221681
1151221782
1250231792
1348231892
14462419102
15452419102
16432420112
17422420122
18412520132
19392521142
20382521152
21372521151
22362521161
23352522171
24342522181
25342522181
26332421192
27332421192
28332421202
29322421203
30322420203

Wind in June

Winds average 11 km/h in June.

Across June, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 54 min at the start of June to 15 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:55 AM to 4:54 AM, and sunset from 7:50 PM to 8:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:557:50
214.94:547:51
315.04:547:52
415.04:537:53
515.04:537:53
615.04:527:54
715.04:527:55
815.14:527:55
915.14:517:56
1015.14:517:57
1115.14:517:57
1215.14:517:58
1315.14:517:58
1415.14:517:59
1515.14:517:59
1615.24:518:00
1715.24:518:00
1815.24:518:01
1915.24:518:01
2015.24:518:01
2115.24:518:02
2215.24:518:02
2315.24:518:02
2415.24:528:02
2515.24:528:02
2615.24:528:02
2715.24:528:02
2815.24:538:03
2915.24:538:02
3015.14:548:02

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.57 kWh/m² — the sunniest month for solar.

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 — June's 6.57 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.4Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.6Intense
156.6Intense
166.6Intense
176.6Intense
186.6Intense
196.6Intense
206.6Intense
216.6Intense
226.6Intense
236.6Intense
246.7Intense
256.7Intense
266.7Intense
276.7Intense
286.7Intense
296.7Intense
306.7Intense
Planning a trip in June

Is June a good time to visit London?

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

6.5
Sightseeing
3rd-best month of the year
5.5
Beach & pool
3rd-best month of the year

June is a reasonable time to visit London for sightseeing.

What to pack for London in June

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

In June, London sees daytime highs around 24°C and nights near 14°C. Pack sun protection. Worth having: light clothes and rain gear. About 12 days see rain.

sun protectionlight clothesrain gear

Sea temperature near London in June

The nearest coast averages about 17°C in June — 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 June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 9 (very high — sun protection essential). 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
June 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).