Monthly weather averages & travel planning

Europe › 🇬🇧 United Kingdom › London
Updated: March 2026
October is a fair time to visit London (5/10). Average highs of 15°C and 6 sunshine hours daily make conditions workable, though not exceptional. Culture-focused travellers and those who prefer lighter crowds will find October a practical choice, with prices running lower than peak June without sacrificing all the good weather. November offers a similar profile at lower hotel rates if dates are flexible. The main practical note: London's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
Step off the plane in London in October and the air meets you at around 15°C, crisp and clear, the kind of chill that sharpens your senses and makes the first coffee taste twice as good. By the time evening arrives and temperatures settle near 8°C, the city takes on a different character entirely. With 6 hours of daylight sun on offer, October gives you the raw material for a genuinely memorable trip.
15°C
59°F
Avg High
8°C
46°F
Avg Low
11 days
60 mm total
Rain Days
6h
per day avg
Sunshine
65%
Moderate
Humidity
The 7°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Wind averages 21 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 59°F average high, 46°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for London in October means dressing for 15°C days and 8°C evenings. A mid-weight jacket over a sweater handles 15°C daytime temperatures; the combination stays comfortable all day without overheating. Evening temperatures settle at 8°C, a modest 7°C drop that a light cardigan or denim jacket covers. European cobblestones reward low-profile walking shoes over flip-flops or heels, with cushioned trainers or leather walking shoes being the practical choice. A compact foldable umbrella weighs almost nothing and earns its keep across 11 potential rainy days.
Local tip: London's cobbled streets turn slippery in the rain. Waterproof walking shoes with a non-slip sole outperform fashionable footwear on wet stone, and you'll cover significantly more ground in comfort.
October has no major festivals or public holidays in London, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 15°C average highs and 11 rainy days
October brings the first meaningful shift toward cooler conditions in London, as the sun angle drops and day length shortens. Temperatures averaging 15°C by day and 8°C overnight are still comfortable by most standards, but the trend is clearly downward. At 52 degrees north latitude, autumn light has a particular quality: lower in the sky and warmer in tone, it gives the city a photogenic quality quite different from summer. Evening temperatures already demand a jacket, but midday hours stay pleasant for sightseeing. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
London in October
October ranks 8th sunniest of the year in London, with an average 6 daily sunshine hours. The driest months are September, February, and March. July is the hottest month (22°C avg high); January is the coolest (7°C). From here, temperatures fall 5°C into November. Compared to last month (September: 19°C high, 9 rain days), October is cooler and wetter. October sits in the middle of the annual sunshine ranking for London, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 7°C | 2°C | 11 | 4h | View |
| February | 8°C | 2°C | 10 | 5h | View |
| March | 10°C | 3°C | 10 | 7h | View |
| April | 14°C | 5°C | 11 | 9h | View |
| May | 17°C | 8°C | 10 | 10h | View |
| June | 20°C | 11°C | 10 | 11h | View |
| July | 22°C | 13°C | 11 | 11h | View |
| August | 21°C | 13°C | 10 | 10h | View |
| September | 19°C | 11°C | 9 | 8h | View |
| October | 15°C | 8°C | 11 | 6h | View |
| November | 10°C | 5°C | 11 | 4h | View |
| December | 8°C | 3°C | 11 | 4h | View |
January
11 rain days, 4h sun
February
10 rain days, 5h sun
March
10 rain days, 7h sun
April
11 rain days, 9h sun
May
10 rain days, 10h sun
June
10 rain days, 11h sun
July
11 rain days, 11h sun
August
10 rain days, 10h sun
September
9 rain days, 8h sun
October
11 rain days, 6h sun
November
11 rain days, 4h sun
December
11 rain days, 4h sun
Cities within 500 km with comparable weather conditions
Data Sources for London
Climate normals represent 30-year averages (1991-2020). Individual years may vary.