Best year time to visit Slough

General weather information about Slough

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 Slough

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

Slough 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

Slough 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

Slough - weather forecast by months

Slough weather in januarySlough weather in februarySlough weather in marchSlough weather in aprilSlough weather in maySlough weather in juneSlough weather in julySlough weather in augustSlough weather in septemberSlough weather in octoberSlough weather in novemberSlough weather in december

Best time to visit Slough:

The best time to visit Slough 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 Slough:

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

The largest precipitation sum in Slough is at

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

    • Weather forecast in the closest to Slough admin centers

    Weather forecast in the closest towns to Slough

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    Frequently asked questions

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