June 12 is generally a great time to visit London. While there is a slight chance of rain (22%), showers are usually brief. Expect comfortable 20°C weather. Expect a bustling atmosphere in London right now—this is when the city truly comes alive with visitors.
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Essential Travel Info for London
Currency
GBP
£ British pound
Language
English
Driving
Left side
Connect
London is unfortunately not noted for fr...
Safety
High Safety
GPI: 1.667
London Weather Forecast for June 12
"Mild & Comfortable. Expect average highs of 20.3°C. 22% chance of rain."
What to Wear in London in June
Based on historical data for June 12, London typically experiences temperatures between 11.4°C and 20.3°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (22% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for London
Smart Suitcase
- Light Jacket
- Long Pants
Average High
20.3°C
Daytime Peak
Average Low
11.4°C
Nighttime Low
Feels Like
20.3°C
☀️ Feels accurate
Rain Chance
22%
Avg 1.3mm if it rains
Cloud Cover
68%
Overcast
Pressure
1016.2 hPa
Medium volatility
London Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ Weather is generally predictable, but pack for minor variations. A light backup layer is recommended.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 30 recommended
03:00 - 10:00
16:00 - 20:00
Type I-II
🔴 21 min to burn
Type III-IV
🟡 32 min to burn
Type V-VI
🟢 53 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.3°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in United Kingdom
Flight Traffic
High
97/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~2,568
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in London
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
03:44
☀️ Noon
12:01
🌇 Sunset
20:18
⏱️ Daylight
16h 34m
Wind Speed
17.7 km/h
Gentle breeze
Sunshine
11.0 hrs
Direct Sun (Cloud-free)
Humidity
73%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for London
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in London
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🔴 Very Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, London on June 12 averages 20.3°C with a 22% precipitation probability. Wedding/Outdoor Event Score: 95/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
London Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
June 14
20.9°C • 19% rain
Score
97
June 9
19.7°C • 20% rain
Score
96
June 10
20°C • 19% rain
Score
96
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (June 12) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is London Worth Visiting on June 12?
Planning a trip to London on June 12? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 20.3°C with a 22% historical precipitation risk.
✈️ Travel Logistics: Approximately 2,568 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 8 vaccinations are recommended for United Kingdom, including COVID-19.
📊 Historical Extremes: The hottest June 12 recorded in the last 30 years saw temperatures hit 26.9°C in 2023, while the coldest dropped to 7.6°C in 2024.