Best year time to visit Donegal

General weather information about Donegal

Average annual temperature is 19.4 °C

Absolute maximum temperature: 36.8 °C

Absolute minimum temperature: -1.1 °C

Number of sunny days: 173 days

Number of rainy days: 192 days

Look at detailed online map of Donegal

* Weather data for Donegal United States is based on climate observations for 2026 year

Donegal air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)24.128.029.431.432.035.036.836.733.229.526.423.9
Average daytime temperature (°C)17.921.122.825.626.830.834.133.829.824.819.416.4
Average temperature (°C)12.015.416.419.221.125.028.328.023.919.013.711.1
Average night temperature (°C)7.411.111.114.016.420.423.723.319.114.39.47.2
Absolute minimum temperature (°C)-1.11.21.16.910.816.020.420.314.47.9-0.4-0.8

Donegal monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.010.0
Daylight mean duration (h)10.311.012.013.013.814.314.113.312.411.410.510.0
Daylight minimum duration (h)10.010.011.012.013.014.013.012.011.010.010.010.0
Sunshine mean duration (h)6.97.88.79.99.410.911.311.510.48.97.16.6
Precipitation (mm)1261076112390170123222716134149
Sunny days151518141087816221921
Rainy days16131316212224231491110
Snow days000000000000

Donegal - weather forecast by months

Donegal weather in januaryDonegal weather in februaryDonegal weather in marchDonegal weather in aprilDonegal weather in mayDonegal weather in juneDonegal weather in julyDonegal weather in augustDonegal weather in septemberDonegal weather in octoberDonegal weather in novemberDonegal weather in december

Best time to visit Donegal:

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

  • August — 11.5(h)

The largest precipitation sum in Donegal is at

  • June — 170(mm)
  • August — 222(mm)
  • December — 149(mm)

    • Weather forecast in the closest to Donegal admin centers

    Weather forecast in the closest towns to Donegal

    Explore Donegal

    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

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