Porthmadog weather live forecast

Today's maximum temperature in Porthmadog is expected to be 9°C. Select a day from the live weather forecast for Porthmadog, Wales, UK for more weather parameters.

  • Thursday
    23rd Oct
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Friday
    24th Oct
    Mostly cloudy with rain (5-10 mm of rainfall expected)
  • Saturday
    25th Oct
    Sunshine and showers (10-20 mm of rainfall expected)
  • Sunday
    26th Oct
    Mostly cloudy with light rain (2-5 mm of rainfall expected)
  • Monday
    27th Oct
    Mostly cloudy with rain (5-10 mm of rainfall expected)

5-day weather forecast updated at 04:03 on Thursday 23rd October 2025 GMT

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

Porthmadog weather forecast by day

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

Porthmadog weather for Thursday 23rd October 2025

Expect mostly cloudy with light rain in Porthmadog, Wales with a maximum temperature of 9°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 68% chance of some rain and a fresh breeze of 34 kph from the north-west.

  • 9°C maximum temperature9
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 68% chance of some rain68
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 5°C wind chill5
    °C wind chill
  • Fresh breeze of 34 kph from the North-West34
    kph wind from NW

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Porthmadog weather for Friday 24th October 2025

Expect mostly cloudy with rain in Porthmadog, Wales with a maximum temperature of 10°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 94% chance of some rain and a moderate breeze of 25 kph from the west.

  • 10°C maximum temperature10
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 94% chance of some rain94
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 25 kph from the West25
    kph wind from W

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Porthmadog weather for Saturday 25th October 2025

Expect sunshine and showers in Porthmadog, Wales with a maximum temperature of 10°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 86% chance of some rain and a fresh breeze of 32 kph from the north-west.

  • 10°C maximum temperature10
    °C maximum temperature
  • 7°C minimum temperature7
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 86% chance of some rain86
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 6°C wind chill6
    °C wind chill
  • Fresh breeze of 32 kph from the North-West32
    kph wind from NW

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Porthmadog weather for Sunday 26th October 2025

Expect mostly cloudy with light rain in Porthmadog, Wales with a maximum temperature of 11°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 82% chance of some rain and a moderate breeze of 28 kph from the north-west.

  • 11°C maximum temperature11
    °C maximum temperature
  • 7°C minimum temperature7
    °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)
  • 82% chance of some rain82
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 11°C wind chill11
    °C wind chill
  • Moderate breeze of 28 kph from the North-West28
    kph wind from NW

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Porthmadog weather for Monday 27th October 2025

Expect mostly cloudy with rain in Porthmadog, Wales with a maximum temperature of 12°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 84% chance of some rain and a strong breeze of 40 kph from the west.

  • 12°C maximum temperature12
    °C maximum temperature
  • 11°C minimum temperature11
    °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)
  • 84% chance of some rain84
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Strong breeze of 40 kph from the West40
    kph wind from W

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

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