The best times to visit London for ideal weather are

July 23rd to February 25th

or

March 5th to July 1st

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

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London Travel Guide

  • Safety
  • The busiest and least popular months
  • Overall travel experience by time of year
  • Weather in London

    Temperature

    Average temperatures in London vary little and are temperate for about half of the year. The area is in the top 46 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 late July where highs are regularly around 56.5°F (13.6°C) with temperatures rarely dropping below 44.4°F (6.9°C) at night.

    London Temperatures (Fahrenheit)

    Key
    High
    Average
    Low

    London Temperatures (Celsius)

    Key
    High
    Average
    Low

    “Feels-Like” Temperatures

    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)

    Key
    High
    Average
    Low

    London Perceived Temperature (C)

    Key
    High
    Average
    Low

     

    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.

    Show Fahrenheit

    Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
    Jan 46.8 42.9 38.7
    Feb 48.6 43.7 39.4
    Mar 53.8 46.8 41.3
    Apr 61.2 52.8 45.8
    May 65.3 57.3 50.3
    Jun 70.5 62.2 54.8
    Jul 73.7 65.4 58.4
    Aug 72.5 64.7 58.3
    Sep 67.6 60.3 54.2
    Oct 61 55 49.8
    Nov 53.5 49.1 44.6
    Dec 47.7 43.6 39.3

    Show Celsius

    Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
    Jan 8.2 6.1 3.7
    Feb 9.2 6.5 4.1
    Mar 12.1 8.2 5.2
    Apr 16.2 11.6 7.7
    May 18.5 14.1 10.2
    Jun 21.4 16.8 12.7
    Jul 23.2 18.6 14.7
    Aug 22.5 18.2 14.6
    Sep 19.8 15.7 12.3
    Oct 16.1 12.8 9.9
    Nov 11.9 9.5 7
    Dec 8.7 6.4 4.1

     

    Precipitation (Rain or Snow)

    If dry weather is what you’re after, the months with the lowest chance of precipitation in London are January, November, and then December. The lowest chance of rain or snow occurs around mid-to late September. For example, on the week of September 17th there are only 1.8 days of precipitation on average. By contrast, it’s most likely to rain or snow in late January with an average of 4.8 days with significant precipitation the week of January 22nd.

    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.

    Key
    Days with precipitation

    Snow on the Ground

    The graph below shows the average snow on the ground in London (in).

    Key
    Snow depth

    Average Rain and Snow by Month

    Show Inches

    Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
    Jan 62.9 0 0.08
    Feb 51.4 0 0.07
    Mar 44.3 0 0.05
    Apr 34.3 0 0.03
    May 44.3 0 0.07
    Jun 45.7 0 0.06
    Jul 48.6 0 0.07
    Aug 41.4 0 0.07
    Sep 31.4 0 0.05
    Oct 42.9 0 0.06
    Nov 58.6 0 0.09
    Dec 54.3 0 0.08

    Show Centimeters

    Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
    Jan 62.9 0 0.2
    Feb 51.4 0 0.18
    Mar 44.3 0 0.13
    Apr 34.3 0 0.08
    May 44.3 0 0.18
    Jun 45.7 0 0.15
    Jul 48.6 0 0.18
    Aug 41.4 0 0.18
    Sep 31.4 0 0.13
    Oct 42.9 0 0.15
    Nov 58.6 0 0.23
    Dec 54.3 0 0.2

     

    Humidity and Wind

    London has slightly high to average humidity compared to most tourist destinations. The least humid month is April (56.4% relative humidity), and the most humid month is November (74.8%).

    Wind in London is usually one of the few places that does not report on wind..

    Relative Humidity (%)

    The graph below shows the average % humidity by month in London.

    Key
    Avg. Relative Humidity

    Wind

    The graph below shows wind speed (max and average) in knots.

    Key
    Max Sustained Wind
    Average Daily Wind

    Average Wind Speeds

    Show Wind Speeds

    All wind speeds are in knots.

    Month Avg. Wind Meaning (Beaufort) Avg. Maximum Sustained Wind Meaning (Beufort)
    Jan 0 very calm N/A
    Feb 3.4 light air 12 a moderate breeze
    Mar 0 very calm N/A
    Apr 0 very calm N/A
    May 0 very calm N/A
    Jun 0 very calm N/A
    Jul 0 very calm N/A
    Aug 0 very calm N/A
    Sep 0 very calm N/A
    Oct 0 very calm N/A
    Nov 0 very calm N/A
    Dec 0 very calm N/A

    Show Relative Humidity by Month

    Month Avg. Relative Humidity
    Jan 73.4
    Feb 69.5
    Mar 61.4
    Apr 56.4
    May 57.6
    Jun 57.4
    Jul 57.6
    Aug 61.6
    Sep 64.7
    Oct 71
    Nov 74.8
    Dec 74.8

     

    Is it Safe to Travel to London?

    As of 6/22/2017 there are travel warnings for the United Kingdom; exercise a high degree of caution. 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, United Kingdom is January, followed by September and October. 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

    Key
    Tourists Seeking Accommodations

    Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Displayed data is calculated relative to the peak, so a score of 67.3 in December means 67.3% of the tourists vs. January.

    Overall London Travel Experience by Season

    Spring (March through May)

    Humidity and temperatures combine to make this season feel warm. Highs range from 50.9°F (10.5°C) and 38.2°F (3.4°C) with warmer temperatures in the later months. Rain is very common with 10 to 14 days of precipitation per month. Spring is the slowest for tourism, which makes it a good time for those looking for deals.

    Summer (June through August)

    The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see moderate precipitation with 13 to 15 days of precipitation per month. June – August is busy season for tourism in London, so lodging and other accommodations may cost slightly more.

    Fall (September through November)

    Fall daily highs range from 52.4°F (11.3°C) and 36.9°F (2.7°C), which will feel very nice given the humidity and wind. It rains or snows a very great amount: 9 to 18 days per month. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.

    Winter (December through February)

    Weather is somewhat cold this time of year in London to be enjoyable for warm weather travelers. The average high during this season is between 37.5°F (3.1°C) and 33.8°F (1°C). On average, it rains or snows a great amount: 14 to 19 times per month. These times of year are fairly slow with tourists.

     

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