The best times to visit London for ideal weather are
May 21st to July 15th
August 6th to September 30th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
London Travel Guide
Weather in London
Average temperatures in London vary somewhat and are temperate for much of the year. The area is in the top 43 percent of tourist destinations for pleasant weather. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit London, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid-July where highs are regularly around 62.4°F (16.9°C) with temperatures rarely dropping below 44.9°F (7.2°C) at night.
London Temperatures (Fahrenheit)
London Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
London Perceived Temperature (F)
London Perceived Temperature (C)
Average London Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of precipitation in London are January, February, and then December. The lowest chance of rain or snow occurs around late August to early September. For example, on the week of August 27th there are only 0.8 days of precipitation on average. By contrast, it’s most likely to rain or snow in late January and early February with an average of 2.5 days with significant precipitation the week of January 29th.
When can you find snow in London? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in London.
Snow on the Ground
The graph below shows the average snow on the ground in London (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
London has slightly high to average humidity compared to most tourist destinations. The least humid month is April (55.6% relative humidity), and the most humid month is December (74.1%).
Wind in London is usually moderate. The windiest month is April, followed by January and February. April’s average wind speed of around 5.1 knots (5.9 MPH or 9.4 KPH) is considered “light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late April where average top sustained speeds reach 10.2 knots, which is considered a gentle breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in London.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots.
|Month||Avg. Wind||Meaning (Beaufort)||Avg. Maximum Sustained Wind||Meaning (Beufort)|
|Jan||5.1||a light breeze||8.9||a gentle breeze|
|Feb||5||a light breeze||9||a gentle breeze|
|Mar||4.8||a light breeze||8.6||a gentle breeze|
|Apr||5.1||a light breeze||9.7||a gentle breeze|
|May||4.3||a light breeze||8.5||a gentle breeze|
|Jun||4.3||a light breeze||8.5||a gentle breeze|
|Jul||3.9||light air||8||a gentle breeze|
|Aug||3.6||light air||7.7||a gentle breeze|
|Sep||3.4||light air||7.5||a gentle breeze|
|Oct||4.1||a light breeze||8.3||a gentle breeze|
|Nov||4.4||a light breeze||8.2||a gentle breeze|
|Dec||5||a light breeze||8.7||a gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to London?
As of 6/28/2017 there are no travel advisories or warnings for Canada; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories.
The Busiest and Least Crowded Months
The busiest month for tourism in London, Canada is July, followed by May and April. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit London in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall London Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 57.2°F (14°C) and 25°F (-3.9°C) with warmer temperatures in the later months. Rain is somewhat common with 6 to 7 days of precipitation per month. Spring is busy for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 5 to 6 days of precipitation per month. June – August is the busiest season for tourism in London, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 58.4°F (14.7°C) and 31.7°F (-0.2°C), which will feel chilly given the humidity and wind. It rains or snows a fair amount: 6 to 7 days per month. Tourism is the slowest during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is far too cold this time of year in London to be enjoyable for warm weather travelers. The average high during this season is between 27.6°F (-2.4°C) and 19.7°F (-6.8°C). On average, it rains or snows a noticeable amount: 8 to 10 times per month. These times of year are fairly slow with tourists.