Caernarfon weather live forecast

Today's maximum temperature in Caernarfon is expected to be 68°F. Select a day from the live weather forecast for Caernarfon, Wales, UK for more weather parameters.

5-day weather forecast updated at 04:04 on Thursday 31st July 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 Thursday 31st July 2025

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 68°F, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a moderate breeze of 13 mph from the north.

  • 68°F maximum temperature68
    °F maximum temperature
  • 55°F minimum temperature55
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 38% chance of some rain38
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 68°F wind chill68
    °F wind chill
  • Moderate breeze of 13 mph from the North13
    mph wind from N

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Caernarfon weather for Friday 1st August 2025

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 63°F, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 16 mph from the north.

  • 63°F maximum temperature63
    °F maximum temperature
  • 55°F minimum temperature55
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 16 mph from the North16
    mph wind from N

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Caernarfon weather for Saturday 2nd August 2025

Expect broken clouds in Caernarfon, Wales with a maximum temperature of 66°F, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 12 mph from the south-west.

  • 66°F maximum temperature66
    °F maximum temperature
  • 54°F minimum temperature54
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 66°F wind chill66
    °F wind chill
  • Moderate breeze of 12 mph from the South-West12
    mph wind from SW

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Caernarfon weather for Sunday 3rd August 2025

Expect mostly cloudy with light rain in Caernarfon, Wales with a maximum temperature of 68°F, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 62% chance of some rain and a moderate breeze of 14 mph from the west.

  • 68°F maximum temperature68
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 62% chance of some rain62
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 68°F wind chill68
    °F wind chill
  • Moderate breeze of 14 mph from the West14
    mph wind from W

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Caernarfon weather for Monday 4th August 2025

Expect mostly cloudy with rain in Caernarfon, Wales with a maximum temperature of 64°F, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a fresh breeze of 21 mph from the south.

  • 64°F maximum temperature64
    °F maximum temperature
  • 57°F minimum temperature57
    °F 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)
  • 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
  • Fresh breeze of 21 mph from the South21
    mph wind from S

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