Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 24°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

5-day weather forecast updated at 04:04 on Sunday 10th August 2025 GMT

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The 5-day weather forecast for Ireland (Letterkenny) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Letterkenny weather forecast by day

Below are the detailed weather forecasts for Letterkenny for the next 5 days.

Letterkenny weather for Tuesday 12th August 2025

Expect isolated thunderstorms in Letterkenny, Ireland with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 32% chance of some rain and a light breeze of 12 kph from the south.

  • 24°C maximum temperature24
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 32% chance of some rain32
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 12 kph from the South12
    kph wind from S

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Letterkenny weather for Wednesday 13th August 2025

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a light breeze of 11 kph from the west.

  • 22°C maximum temperature22
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 38% chance of some rain38
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 22°C wind chill22
    °C wind chill
  • Light breeze of 11 kph from the West11
    kph wind from W

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Letterkenny weather for Thursday 14th August 2025

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 37% chance of some rain and a light breeze of 9 kph from the north-west.

  • 20°C maximum temperature20
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 37% chance of some rain37
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 20°C wind chill20
    °C wind chill
  • Light breeze of 9 kph from the North-West9
    kph wind from NW

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Letterkenny weather for Friday 15th August 2025

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 27% chance of some rain and a light breeze of 11 kph from the west.

  • 18°C maximum temperature18
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 27% chance of some rain27
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the West11
    kph wind from W

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Letterkenny weather for Saturday 16th August 2025

Expect broken clouds in Letterkenny, Ireland with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.

  • 19°C maximum temperature19
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 11 kph from the North11
    kph wind from N

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Metric (°C / mm)  |  Imperial (°F / inches)

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