United Kingdom London Weather in March — Climate Guide
March in London is Improving
March is Improving for London.
Spring's first hints — daffodils in St James's Park, lighter evenings (clocks forward late March, adding an extra hour of daylight overnight). Still cold and changeable — expect 4 seasons in one day. St Patrick's Day parade in Trafalgar Square is the big cultural day. Boat Race on the Thames (Putney to Mortlake) draws 250,000 spectators.
Travel score
Early spring + gardens reopen + St. Patrick's Day
March Weather at a Glance
March averages 52°F / 11°C highs and 39°F / 4°C lows — spring starts. 9 rainy days, 40mm. Humidity 80% + 4 hours of sunshine. Spring flowers (daffodils, tulips) bloom late March at Hyde Park, Kew Gardens. Spring equinox.
March Travel Advice
Cardigan + jacket + umbrella. March 30-31 daylight saving starts — time difference becomes -8 hours from Seoul. March 17 St. Patrick's Day (Irish national day, Camden Market + Trafalgar Square green festival). Mother's Day (UK-specific 4th Sunday of March).
Flying In from Overseas
Asian Q1 wrap-up — Korean working-professional short-vacation value peak. Asia-London $700-1,120 round-trip.
March Pricing Trends
Early spring value — Covent Garden 3-star $155-280/night.
London March Weather Stats
Avg High
11°C
Avg Low
4°C
Rainy Days
9
40mm total
Sunshine
3.5h
Daily avg
Humidity
73%
Mild
UV Index
3
Moderate
Wind
16 km/h
Gusts 30
Sea Temp
8°C
Avg water temp
Crowds
Moderate
At attractions
March Sunrise & Sunset
Air Quality
PM2.5
22 μg/m³
PM10
33 μg/m³
Status
Moderate
Feels-Like Temperature & Wind
Feels like
Daytime
9°C
Nighttime
2°C
Humidity and wind affect how the actual temperature feels.
Wind
16 km/h
Max gust 30 km/h
Activities Recommended for March
March Travel Pros & Cons
Pros
- Spring flowers begin (daffodils)
- Clocks forward late March (long evenings return)
- Six Nations Rugby finals at Twickenham
Cons
- Unpredictable rain
- Crowds picking back up at major sites
- Cold mornings still need winter coat
March Events & Festivals
- St Patrick's Day Parade (March 17)
- London Book Fair (mid-March)
- Boat Race Oxford vs Cambridge (late March)
London in March — Full Picture
Spring's first hints — daffodils in St James's Park, lighter evenings (clocks forward late March, adding an extra hour of daylight overnight). Still cold and changeable — expect 4 seasons in one day. St Patrick's Day parade in Trafalgar Square is the big cultural day. Boat Race on the Thames (Putney to Mortlake) draws 250,000 spectators.
What to Wear & What to Pack
Layer-heavy — light wool coat over sweater, scarf, waterproof outer. Daffodils and crocuses begin. Indoor cafés warm; outdoor swings 10°C in an afternoon.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current14°C
6.3°C
8.7/mo
Summer (Jun·Jul·Aug)
21.7°C
13.3°C
6.7/mo
Autumn (Sep·Oct·Nov)
15°C
8°C
9.3/mo
Winter (Dec·Jan·Feb)
8.3°C
2.3°C
10.3/mo
London Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 8° | 2° | 11d·55mm | 1.5h | 80% | 1 | Quiet | Low season | |
| 9° | 2° | 9d·40mm | 2h | 78% | 2 | Quiet | Low season | |
| 11° | 4° | 9d·40mm | 3.5h | 73% | 3 | Moderate | Shoulder | |
| 14° | 6° | 9d·45mm | 5h | 70% | 4 | Moderate | Shoulder | |
| 17° | 9° | 8d·45mm | 6.5h | 68% | 5 | Busy | Peak | |
| June (Best) | 20° | 12° | 7d·45mm | 7h | 65% | 6 | Busy | Peak |
| July (Best) | 23° | 14° | 6d·45mm | 7h | 65% | 6 | Very busy | Peak |
| 22° | 14° | 7d·50mm | 6.5h | 66% | 5 | Very busy | Peak | |
| 19° | 11° | 8d·50mm | 5h | 70% | 4 | Busy | Peak | |
| 15° | 8° | 10d·70mm | 3.5h | 76% | 3 | Moderate | Shoulder | |
| 11° | 5° | 10d·65mm | 2h | 79% | 1 | Moderate | Shoulder | |
| 8° | 3° | 11d·55mm | 1.5h | 81% | 1 | Very busy | Peak |
View Other Months
London March Hotel Picks
Frequently Asked Questions
Is March a good time to visit London?
London in March is Improving. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in London in March?
London March averages a high of 11°C and a low of 4°C.
Does it rain much in London in March?
London March averages 40mm of rainfall over about 9 rainy days.
What should I wear in London in March?
Layer-heavy — light wool coat over sweater, scarf, waterproof outer. Daffodils and crocuses begin. Indoor cafés warm; outdoor swings 10°C in an afternoon.
What time are sunrise and sunset in London in March?
London March sunrise is 06:30 and sunset is 18:10, with 11h 40m of daylight.
What's the air quality like in London in March?
London March air quality (AQI) averages 50, rated Good. PM2.5 averages 22μg/m³.
What activities are recommended in London in March?
In March, London is great for Daffodils at St James's Park, St Patrick's Day Trafalgar, Boat Race spectator.
Is March peak season in London?
London March crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit London
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.