March 20 is generally a great time to visit London. While there is a slight chance of rain (15%), showers are usually brief. Expect comfortable 12°C weather. Lower tourist interest in London right now translates to better deals and a more local feel.
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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 March 20
"Mild & Comfortable. Expect average highs of 11.6°C. 15% chance of snow."
What to Wear in London in March
Based on historical data for March 20, London typically experiences temperatures between 4.3°C and 11.6°C. We recommend packing heavy coat, scarf, gloves to stay comfortable. Trends suggest it will stay mostly dry (15% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for London
Smart Suitcase
- Heavy Coat
- Scarf
- Gloves
Average High
11.6°C
Daytime Peak
Average Low
4.3°C
Nighttime Low
Feels Like
10.3°C
🌤️ Minor difference
Snow Chance
15%
Avg 0.7mm if it snows
Snowfall
0.1 cm
~15% chance
Pressure
1019.2 hPa
High volatility
London Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 87% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 42 min to burn
Type III-IV
🟡 63 min to burn
Type V-VI
🟢 105 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
8.1°C
Dry air
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
Quiet
25/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~662
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in London
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:05
☀️ Noon
12:09
🌇 Sunset
18:13
⏱️ Daylight
12h 8m
Wind Speed
19.2 km/h
Gentle breeze
Sunshine
6.4 hrs
Direct Sun (Cloud-free)
Humidity
79%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for London
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in London
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟢 Moderate
Price Level
💰💰 Moderate
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Weather unlikely to affect joint pain.
Fish are active due to pressure changes.
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 March 20 averages 11.6°C with a 15% precipitation probability. Wedding/Outdoor Event Score: 79/100."
— 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
Compare Other Cities
Same date (March 20) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is London Worth Visiting on March 20?
Planning a trip to London on March 20? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year offers a bracing seasonal atmosphere averaging 11.6°C with a 15% historical precipitation risk.
✈️ Travel Logistics: Approximately 662 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 March 20 recorded in the last 30 years saw temperatures hit 19.2°C in 2025, while the coldest dropped to 0.3°C in 2021.