Porthmadog weather live forecast

Tomorrow's maximum temperature in Porthmadog is expected to be 55°F.

5-day weather forecast updated at 04:03 on Sunday 25th May 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 Sunday 25th May 2025

Expect sunshine and showers in Porthmadog, Wales with a maximum temperature of 55°F, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 86% chance of some rain and a fresh breeze of 22 mph from the west.

  • 55°F maximum temperature55
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 86% chance of some rain86
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Fresh breeze of 22 mph from the West22
    mph wind from W

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Porthmadog weather for Monday 26th May 2025

Expect mostly cloudy with rain in Porthmadog, Wales with a maximum temperature of 54°F, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 99% chance of some rain and a strong breeze of 26 mph from the south-west.

  • 54°F maximum temperature54
    °F maximum temperature
  • 46°F minimum temperature46
    °F minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 99% chance of some rain99
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Strong breeze of 26 mph from the South-West26
    mph wind from SW

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Porthmadog weather for Tuesday 27th May 2025

Expect cloudy with some rain in Porthmadog, Wales with a maximum temperature of 57°F, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 92% chance of some rain and a fresh breeze of 23 mph from the south-west.

  • 57°F maximum temperature57
    °F maximum temperature
  • 50°F minimum temperature50
    °F 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)
  • 92% chance of some rain92
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 57°F wind chill57
    °F wind chill
  • Fresh breeze of 23 mph from the South-West23
    mph wind from SW

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Porthmadog weather for Wednesday 28th May 2025

Expect mostly cloudy with light rain in Porthmadog, Wales with a maximum temperature of 59°F, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 65% chance of some rain and a fresh breeze of 22 mph from the west.

  • 59°F maximum temperature59
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 65% chance of some rain65
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Fresh breeze of 22 mph from the West22
    mph wind from W

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Porthmadog weather for Thursday 29th May 2025

Expect cloudy with some rain in Porthmadog, Wales with a maximum temperature of 59°F, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 76% chance of some rain and a strong breeze of 24 mph from the south-west.

  • 59°F maximum temperature59
    °F maximum temperature
  • 50°F minimum temperature50
    °F minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 76% chance of some rain76
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Strong breeze of 24 mph from the South-West24
    mph wind from SW

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Metric (°C)  |  Imperial (°F)

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