Best year time to visit Heathrow

General weather information about Heathrow

Average annual temperature is 11.5 °C

Absolute maximum temperature: 31.1 °C

Absolute minimum temperature: -4.4 °C

Number of sunny days: 136 days

Number of rainy days: 229 days

Look at detailed online map of Heathrow

* Weather data for Heathrow United Kingdom is based on climate observations for 2026 year

Heathrow air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.813.315.017.420.828.926.925.131.123.014.713.4
Average daytime temperature (°C)8.09.610.313.017.123.220.821.222.716.710.59.7
Average temperature (°C)5.06.07.48.712.717.917.117.118.013.07.67.6
Average night temperature (°C)1.82.74.44.48.212.613.212.913.59.84.85.0
Absolute minimum temperature (°C)-4.4-2.9-3.4-0.45.17.59.010.08.32.1-2.0-3.7

Heathrow monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.016.016.016.015.013.011.09.08.0
Daylight mean duration (h)8.410.011.913.915.616.516.114.612.710.78.97.9
Daylight minimum duration (h)7.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)4.34.54.57.610.012.310.29.99.06.54.42.4
Precipitation (mm)61121017831389376641108795
Sunny days162041013164713111111
Rainy days15827201814272417201920
Snow days000000000000

Heathrow - weather forecast by months

Heathrow weather in januaryHeathrow weather in februaryHeathrow weather in marchHeathrow weather in aprilHeathrow weather in mayHeathrow weather in juneHeathrow weather in julyHeathrow weather in augustHeathrow weather in septemberHeathrow weather in octoberHeathrow weather in novemberHeathrow weather in december

Best time to visit Heathrow:

The best time to visit Heathrow during the most sunny months:

  • May — 10.0(h)
  • June — 12.3(h)
  • July — 10.2(h)
  • August — 9.9(h)

Months with the longest average daylight duration in Heathrow:

  • May — 15.6(h)
  • June — 16.5(h)
  • July — 16.1(h)

The largest precipitation sum in Heathrow is at

  • March — 101(mm)
  • July — 93(mm)
  • October — 110(mm)
  • December — 95(mm)

    • Weather forecast in the closest to Heathrow admin centers

    Weather forecast in the closest towns to Heathrow

    Explore Heathrow

    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

    When is the best time to visit Heathrow?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Heathrow.
    What is the weather like in Heathrow?
    See average temperature, rainfall and daylight hours for Heathrow by month in the table above.
    How many sunny days does Heathrow have?
    The monthly weather statistics above show sunshine and rainfall patterns for Heathrow throughout the year.