Best year time to visit Costelloe

General weather information about Costelloe

Average annual temperature is 11.2 °C

Absolute maximum temperature: 26.1 °C

Absolute minimum temperature: -4.1 °C

Number of sunny days: 59 days

Number of rainy days: 304 days

Number of snow days: 2 days

Look at detailed online map of Costelloe

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

Costelloe air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.213.413.317.124.024.421.422.626.117.713.112.5
Average daytime temperature (°C)8.79.99.512.316.320.516.917.918.013.710.69.6
Average temperature (°C)6.88.07.29.512.917.114.715.315.111.38.57.8
Average night temperature (°C)4.75.54.76.39.213.312.412.712.08.96.05.9
Absolute minimum temperature (°C)-3.5-0.9-4.10.26.39.98.78.56.43.8-0.3-2.6

Costelloe monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)8.010.012.014.016.016.016.015.013.011.09.07.0
Daylight mean duration (h)8.29.811.914.015.916.916.414.712.710.68.77.6
Daylight minimum duration (h)7.08.010.013.015.016.015.013.011.09.07.07.0
Sunshine mean duration (h)3.53.34.67.59.911.08.88.76.64.94.62.6
Precipitation (mm)1696628913074167236205159218154231
Sunny days1633119018872
Rainy days282228272021313022232329
Snow days200000000000

Costelloe - weather forecast by months

Costelloe weather in januaryCostelloe weather in februaryCostelloe weather in marchCostelloe weather in aprilCostelloe weather in mayCostelloe weather in juneCostelloe weather in julyCostelloe weather in augustCostelloe weather in septemberCostelloe weather in octoberCostelloe weather in novemberCostelloe weather in december

Best time to visit Costelloe:

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

  • May — 9.9(h)
  • June — 11.0(h)
  • July — 8.8(h)
  • August — 8.7(h)

Months with the longest average daylight duration in Costelloe:

  • May — 15.9(h)
  • June — 16.9(h)
  • July — 16.4(h)

The largest precipitation sum in Costelloe is at

  • March — 289(mm)
  • July — 236(mm)
  • December — 231(mm)

    • Weather forecast in the closest to Costelloe admin centers

    Weather forecast in the closest towns to Costelloe

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    Frequently asked questions

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