Letterkenny weather live forecast

Today's maximum temperature in Letterkenny is expected to be 15°C. Select a day from the live weather forecast for Letterkenny, Ireland for more weather parameters.

5-day weather forecast updated at 04:03 on Thursday 2nd October 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 Thursday 2nd October 2025

Expect cloudy with some rain in Letterkenny, Ireland with a maximum temperature of 15°C and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 99% chance of some rain and a fresh breeze of 30 kph from the south.

  • 15°C maximum temperature15
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 99% chance of some rain99
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Fresh breeze of 30 kph from the South30
    kph wind from S

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Letterkenny weather for Friday 3rd October 2025

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 14°C and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 99% chance of some rain and a strong breeze of 48 kph from the south-west.

  • 14°C maximum temperature14
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • No UV (maximum) index0
    UV index (None)
  • 99% chance of some rain99
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Strong breeze of 48 kph from the South-West48
    kph wind from SW

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Letterkenny weather for Saturday 4th October 2025

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 81% chance of some rain and a strong breeze of 47 kph from the west.

  • 12°C maximum temperature12
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 81% chance of some rain81
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Strong breeze of 47 kph from the West47
    kph wind from W

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Letterkenny weather for Sunday 5th October 2025

Expect cloudy with some rain in Letterkenny, Ireland with a maximum temperature of 14°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 72% chance of some rain and a fresh breeze of 32 kph from the west.

  • 14°C maximum temperature14
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 72% chance of some rain72
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 14°C wind chill14
    °C wind chill
  • Fresh breeze of 32 kph from the West32
    kph wind from W

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Letterkenny weather for Monday 6th October 2025

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 15°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a strong breeze of 41 kph from the south-west.

  • 15°C maximum temperature15
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 79% chance of some rain79
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Strong breeze of 41 kph from the South-West41
    kph wind from SW

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

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