Best year time to visit Greencastle

General weather information about Greencastle

Average annual temperature is 11.0 °C

Absolute maximum temperature: 25.2 °C

Absolute minimum temperature: -1.3 °C

Number of sunny days: 60 days

Number of rainy days: 303 days

Number of snow days: 2 days

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* Weather data for Greencastle Ireland is based on climate observations for 2026 year

Greencastle air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.113.514.617.119.225.222.321.725.019.313.512.7
Average daytime temperature (°C)8.29.89.311.814.619.416.917.517.613.810.19.2
Average temperature (°C)6.67.97.09.111.816.114.815.214.811.98.47.7
Average night temperature (°C)4.95.74.86.38.812.712.713.312.310.16.36.2
Absolute minimum temperature (°C)0.6-0.2-1.31.94.07.710.410.18.75.42.31.0

Greencastle monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.012.015.016.017.017.015.013.011.09.07.0
Daylight mean duration (h)7.89.711.914.116.217.316.814.912.710.58.47.2
Daylight minimum duration (h)7.08.010.013.015.017.016.013.011.09.07.07.0
Sunshine mean duration (h)2.73.35.38.69.512.09.49.27.34.94.02.2
Precipitation (mm)92561108556881719411911481181
Sunny days3738812015553
Rainy days272127222318313025262528
Snow days101000000000

Greencastle - weather forecast by months

Greencastle weather in januaryGreencastle weather in februaryGreencastle weather in marchGreencastle weather in aprilGreencastle weather in mayGreencastle weather in juneGreencastle weather in julyGreencastle weather in augustGreencastle weather in septemberGreencastle weather in octoberGreencastle weather in novemberGreencastle weather in december

Best time to visit Greencastle:

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

  • April — 8.6(h)
  • May — 9.5(h)
  • June — 12.0(h)
  • July — 9.4(h)
  • August — 9.2(h)

Months with the longest average daylight duration in Greencastle:

  • May — 16.2(h)
  • June — 17.3(h)
  • July — 16.8(h)

The largest precipitation sum in Greencastle is at

  • July — 171(mm)
  • December — 181(mm)

    • Weather forecast in the closest to Greencastle admin centers

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    Frequently asked questions

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