March marks a transitional period in London as the city shakes off winter’s chill and embraces early spring. The weather this month is unpredictable, oscillating between cool days and warm spells. Visitors often navigate a mix of sunshine, clouds, and rain, making March a month of contrasts.
Quick Answer: London’s March weather features average temperatures of 4-12°C (39-54°F) with moderate rainfall across 15-16 days. The month brings spring’s first signs—blooming flowers and longer daylight—but requires layered clothing and waterproof gear due to unpredictable conditions.
Key Takeaways
- March weather in London is unpredictable, with temperatures ranging from 4-12°C and a mix of sunny and rainy days
- Layer your clothing with waterproof outerwear and comfortable, water-resistant footwear
- London hosts St. Patrick’s Festival (mid-March), London Book Fair, and various cultural events during this period
Average Temperature
London’s March temperature typically ranges from 4°C (39°F) to 12°C (54°F). Early in the month, mornings and evenings feel chilly as temperatures dip. As March progresses, daytime highs gradually reach the low teens.
This variability means some days feel pleasantly mild while others carry a wintry bite, especially when winds are brisk. March’s transitional nature brings a mix of cold fronts and warmer air masses moving across the region. This creates sudden temperature changes throughout the day.
Residents and visitors should stay prepared for varying conditions. It’s common to experience chilly mornings and warm afternoons on the same day. As of October 2025, Met Office records show March 2025 reached a high of 21.3°C in Northolt and Chertsey on March 20th—the highest temperature recorded that year so far.
Historical Temperature Variations
March temperatures in London show considerable variation over decades. Records indicate some years experienced unseasonably warm spells above 15°C (59°F), while others saw late snowfalls or prolonged cold snaps. This variability stems from broader climatic patterns, including the North Atlantic Oscillation and other meteorological phenomena affecting Europe.
Recent years show a noticeable trend toward warmer March temperatures, reflecting broader climate changes. UK Met Office data indicates average March temperatures increased by approximately 1°C over the past century. This warming trend affects daily life and seasonal events like plant flowering times and bird migration patterns.
Understanding these historical variations provides valuable context for current weather patterns and helps inform expectations for future March weather in London.
Typical Rainfall
March brings unpredictable rainfall to London. The month averages 35-45mm (1.4-1.8 inches) spread across 15-16 rainy days. Rainfall varies significantly year to year—some Marches are relatively dry while others bring persistent showers or heavy downpours.
Precipitation typically includes light rain or drizzle rather than heavy storms, but it can still catch unprepared visitors off guard. As of October 2025, March 2025 was exceptionally dry—England received only 14.8mm (22% of the long-term average), making it the sixth driest March since 1836 according to UK Government water situation reports.
These showers often come and go quickly, allowing sunshine to break through clouds. This makes outdoor activities possible despite occasional rain interruptions. The variable rainfall also maintains the lush greenery of London’s parks and gardens as they awaken from winter dormancy.
Impact on Outdoor Activities
March weather significantly influences outdoor activities across London. As spring approaches, residents eagerly take advantage of milder temperatures and longer daylight hours. Parks like Hyde Park and Regent’s Park become popular for picnics, jogging, and leisurely strolls as flowers bloom and trees bud.
However, March’s unpredictable nature means plans can change quickly—a sunny morning may give way to afternoon showers. Cultural events and festivals increase this month as people emerge from winter hibernation. Outdoor markets, street fairs, and food festivals populate the calendar, drawing crowds eager for fresh air and community.
Event organizers must stay vigilant about weather forecasts, as rain or cold snaps impact attendance and enjoyment. While March offers ample opportunities for outdoor engagement, participants must remain flexible and prepared for changing conditions.
What to Wear
Dressing for London’s March weather requires a strategic, layered approach. Start with a base layer like a long-sleeve shirt or lightweight sweater. Add a warmer jacket or coat that’s easy to remove if temperatures rise during the day.
A waterproof outer layer is essential given the likelihood of rain. A stylish yet functional raincoat or windbreaker provides protection without sacrificing comfort. Choose waterproof shoes or boots for navigating wet streets while ensuring comfort during extended walking.
Accessories like scarves and hats provide extra warmth during chilly mornings and evenings but can be easily stowed when temperatures rise. By adopting this layered approach and choosing versatile clothing, you’ll stay comfortable regardless of how weather shifts throughout the day.
Events and Festivals
March is a vibrant month for events in London, reflecting the city’s diverse cultural landscape. The St. Patrick’s Festival is a major highlight—in 2025, the Mayor of London’s parade took place on Sunday, March 16th (not the traditional March 17th). The celebration featured floats, marching bands, dance troupes, and festivities at Trafalgar Square with live music, food, and drink showcasing Irish culture.
The annual London Book Fair typically takes place mid-March at Olympia London. This event attracts publishers, authors, and literary enthusiasts worldwide, providing a platform for networking and showcasing new works.
Additionally, various art exhibitions and gallery openings occur throughout the month as part of London’s thriving art scene. These events celebrate creativity and encourage community engagement while allowing visitors to explore the city’s rich cultural offerings.
Best Indoor Activities
For those seeking refuge from unpredictable weather, London offers diverse indoor entertainment options. Museums like the British Museum and Natural History Museum provide fascinating insights into history and science while offering shelter from rain or cold. These institutions often host special March exhibitions that draw crowds eager to learn about specific topics.
The West End theatre district is another prime destination for indoor entertainment. With shows ranging from classic plays to contemporary musicals, there’s something for everyone looking to experience London’s rich theatrical heritage.
Art galleries like Tate Modern and the National Gallery showcase impressive collections, allowing visitors to immerse themselves in art without worrying about weather outside. These venues provide warmth, culture, and memorable experiences regardless of March’s temperamental climate.
Tips for Staying Dry
Staying dry during London’s rainy March requires preparation and foresight. First, invest in a high-quality waterproof jacket with breathable fabric that allows moisture to escape while keeping you dry from external elements.
An umbrella is a must-have accessory. Compact travel umbrellas are convenient for carrying while providing protection against sudden downpours. Consider wearing water-resistant footwear to keep feet dry while exploring city streets.
If you plan extended outdoor periods, carry a waterproof bag or pouch to protect belongings from unexpected rain showers. Taking these precautions lets you enjoy all London offers without being hindered by wet weather.
Climate Change Effects
Climate change has begun affecting London’s weather patterns, including those in March. As global temperatures rise due to human activity, cities like London experience shifts in seasonal norms impacting temperature averages and precipitation levels.
Research indicates warmer winters may lead to earlier springs—flowers may bloom sooner than historical averages suggest. According to the Greater London Authority, London now experiences warmer, wetter winters and hotter, drier summers due to climate change.
Moreover, increased rainfall intensity has been noted across UK regions, including London. While total precipitation may not drastically increase, when it does rain, it comes down harder—potentially leading to flooding in certain areas. These changes pose challenges for residents and city planners who must adapt infrastructure while ensuring public safety.
FAQs
- What is the average temperature in London in March?
- The average temperature in London in March ranges from 5°C (41°F) to 11°C (52°F). Early mornings and evenings can feel chilly, while afternoons often warm up pleasantly.
- Does it rain a lot in London in March?
- London experiences moderate rainfall in March, averaging 35-45mm across 15-16 rainy days. Showers are typically light and brief, though March 2025 was exceptionally dry.
- What type of clothing should I pack for a trip to London in March?
- Pack layers including a waterproof jacket, warm sweater, long-sleeve base layers, and waterproof boots. Bring an umbrella and accessories like scarves that are easy to remove as temperatures change.
- Are there any special events or festivals in London in March?
- Yes. London hosts the St. Patrick’s Festival parade (mid-March), the London Book Fair, and various art exhibitions. These events celebrate Irish culture, literature, and the arts.
- Is it a good time to visit London in March?
- March is a great time to visit for cooler weather and fewer crowds. Spring begins to emerge with blooming flowers and longer days, though you should prepare for rain and fluctuating temperatures.
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