Weather in Glastonbury in August

General weather information about Glastonbury

Average annual temperature is 8.2 °C

Absolute maximum temperature: 32.0 °C

Absolute minimum temperature: -33.4 °C

Number of sunny days: 132 days

Number of rainy days: 189 days

Number of snow days: 44 days

Look at detailed online map of Glastonbury

* Weather data for Glastonbury Canada is based on climate observations for 2026 year

Glastonbury air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)5.210.28.827.731.632.030.926.431.728.814.08.9
Average daytime temperature (°C)-0.51.13.514.719.423.426.123.322.515.25.42.7
Average temperature (°C)-4.0-5.4-1.37.612.818.321.118.717.211.31.5-0.3
Average night temperature (°C)-7.1-11.2-5.21.97.013.816.714.913.18.2-1.8-2.9
Absolute minimum temperature (°C)-17.4-33.4-12.5-9.50.79.912.710.28.6-2.3-8.1-12.3

Glastonbury monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.210.411.913.514.815.515.214.012.511.09.68.9
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)3.05.36.38.811.310.411.910.89.85.25.13.1
Precipitation (mm)8670801148013212213319575198
Sunny days6712161974720101311
Rainy days101110141223272410201117
Snow days15109000000163

Glastonbury - weather forecast by months

Glastonbury weather in januaryGlastonbury weather in februaryGlastonbury weather in marchGlastonbury weather in aprilGlastonbury weather in mayGlastonbury weather in juneGlastonbury weather in julyGlastonbury weather in augustGlastonbury weather in septemberGlastonbury weather in octoberGlastonbury weather in novemberGlastonbury weather in december

Best time to visit Glastonbury:

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

  • May — 11.3(h)
  • June — 10.4(h)
  • July — 11.9(h)
  • August — 10.8(h)
  • September — 9.8(h)

Months with the longest average daylight duration in Glastonbury:

  • June — 15.5(h)

The largest precipitation sum in Glastonbury is at

  • April — 114(mm)
  • June — 132(mm)
  • July — 122(mm)
  • August — 133(mm)

    • Weather forecast in the closest to Glastonbury admin centers

    Weather forecast in the closest towns to Glastonbury

    Explore Glastonbury

    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

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