Caernarfon weather live forecast

Tomorrow's maximum temperature in Caernarfon is expected to be 21°C.

5-day weather forecast updated at 04:03 on Saturday 21st June 2025 GMT

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

Caernarfon weather forecast by day

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

Caernarfon weather for Saturday 21st June 2025

Expect isolated thunderstorms in Caernarfon, Wales with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 32% chance of some rain and a moderate breeze of 25 kph from the south.

  • 21°C maximum temperature21
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 32% chance of some rain32
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 21°C wind chill21
    °C wind chill
  • Moderate breeze of 25 kph from the South25
    kph wind from S

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Caernarfon weather for Sunday 22nd June 2025

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 92% chance of some rain and a fresh breeze of 37 kph from the south-west.

  • 17°C maximum temperature17
    °C maximum temperature
  • 13°C minimum temperature13
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 92% chance of some rain92
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 17°C wind chill17
    °C wind chill
  • Fresh breeze of 37 kph from the South-West37
    kph wind from SW

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Caernarfon weather for Monday 23rd June 2025

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a fresh breeze of 31 kph from the west.

  • 17°C maximum temperature17
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 44% chance of some rain44
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 17°C wind chill17
    °C wind chill
  • Fresh breeze of 31 kph from the West31
    kph wind from W

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Caernarfon weather for Tuesday 24th June 2025

Expect cloudy with some rain in Caernarfon, Wales with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 55% chance of some rain and a fresh breeze of 29 kph from the south-west.

  • 18°C maximum temperature18
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Cloudy with some rain
    cloudy with some rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 55% chance of some rain55
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • 18°C wind chill18
    °C wind chill
  • Fresh breeze of 29 kph from the South-West29
    kph wind from SW

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Caernarfon weather for Wednesday 25th June 2025

Expect mostly cloudy with rain in Caernarfon, Wales with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 30-40 mm of rainfall expected with 62% chance of some rain and a moderate breeze of 26 kph from the south-west.

  • 18°C maximum temperature18
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 62% chance of some rain62
    % chance of some rain
  • 30-40 mm of rainfall expected<40
    mm of rainfall expected
  • 18°C wind chill18
    °C wind chill
  • Moderate breeze of 26 kph from the South-West26
    kph wind from SW

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

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