Best year time to visit Letter

General weather information about Letter

Average annual temperature is 11.0 °C

Absolute maximum temperature: 22.7 °C

Absolute minimum temperature: -2.7 °C

Number of sunny days: 63 days

Number of rainy days: 301 days

Number of snow days: 1 day

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

Letter air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.312.612.916.021.322.420.620.022.718.413.312.5
Average daytime temperature (°C)8.89.79.711.716.218.917.618.017.613.910.89.9
Average temperature (°C)6.57.97.49.012.615.814.815.214.811.68.68.2
Average night temperature (°C)4.15.84.96.19.012.412.112.611.99.26.56.3
Absolute minimum temperature (°C)-2.70.50.21.94.68.49.29.56.43.0-0.1-1.1

Letter 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)8.410.011.913.915.616.616.114.612.710.78.97.9
Daylight minimum duration (h)7.09.010.012.014.016.015.013.011.09.08.07.0
Sunshine mean duration (h)3.74.14.57.710.510.510.08.57.34.65.13.1
Precipitation (mm)17255308896592157167196223117190
Sunny days3452148138384
Rainy days272426281722302822282227
Snow days100000000000

Letter - weather forecast by months

Letter weather in januaryLetter weather in februaryLetter weather in marchLetter weather in aprilLetter weather in mayLetter weather in juneLetter weather in julyLetter weather in augustLetter weather in septemberLetter weather in octoberLetter weather in novemberLetter weather in december

Best time to visit Letter:

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

  • May — 10.5(h)
  • June — 10.5(h)
  • July — 10.0(h)
  • August — 8.5(h)

Months with the longest average daylight duration in Letter:

  • May — 15.6(h)
  • June — 16.6(h)
  • July — 16.1(h)

The largest precipitation sum in Letter is at

  • March — 308(mm)
  • September — 196(mm)
  • October — 223(mm)

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    Frequently asked questions

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