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 04:04 on Wednesday 1st 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, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 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
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 99% chance of some rain99
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    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 13°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 99% chance of some rain and a strong breeze of 50 kph from the south-west.

  • 13°C maximum temperature13
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 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 50 kph from the South-West50
    kph wind from SW

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Letterkenny weather for Saturday 4th October 2025

Expect mostly cloudy with rain in Letterkenny, Ireland with a maximum temperature of 12°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 79% chance of some rain and a strong breeze of 48 kph from the north-west.

  • 12°C maximum temperature12
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 79% chance of some rain79
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 12°C wind chill12
    °C wind chill
  • Strong breeze of 48 kph from the North-West48
    kph wind from NW

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Letterkenny weather for Sunday 5th October 2025

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 13°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 62% chance of some rain and a fresh breeze of 33 kph from the north-west.

  • 13°C maximum temperature13
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 2 (Low)2
    UV index (Low)
  • 62% chance of some rain62
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 13°C wind chill13
    °C wind chill
  • Fresh breeze of 33 kph from the North-West33
    kph wind from NW

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Letterkenny weather for Monday 6th October 2025

Expect mostly cloudy with light rain in Letterkenny, Ireland with a maximum temperature of 16°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 81% chance of some rain and a gentle breeze of 15 kph from the south-west.

  • 16°C maximum temperature16
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 81% chance of some rain81
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 16°C wind chill16
    °C wind chill
  • Gentle breeze of 15 kph from the South-West15
    kph wind from SW

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

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