Weather Forecast for Caernarfon

Gwynedd, United Kingdom

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Overcast

Current Weather - Caernarfon: 7°C

Gwynedd, United Kingdom

Overcast

Feels like 3°C

Wind

28 km/h NW

Humidity

70%

Pressure

1010 mb

UV Index

0

Visibility

10 km

Patchy rain nearby

Patchy rain nearby

Thursday, January 01, 2026

High

6°C

Low

3°C

Rain Chance

92%

Hourly Forecast

Patchy rain nearby 4°C
17:00
Light rain shower 4°C
18:00
Light rain shower 4°C
19:00
Light rain shower 4°C
20:00
Light rain shower 4°C
21:00
Patchy rain nearby 4°C
22:00
Patchy rain nearby 4°C
23:00
Jan 02

Day Statistics

Maximum Wind

34 km/h

Humidity

76%

Precipitation

2 mm

UV Index

0

Visibility

10 km

Rain Chance

92%

Snow Chance

0%

Sun & Moon

Sunrise

08:31 AM

Sunset

04:10 PM

Moonrise

01:30 PM

Moonset

06:59 AM

Moon Phase

Waxing Gibbous

Moon Illumination

91%

Air Quality

PM2.5

3.8

μg/m³

PM10

10.4

μg/m³

NO₂

2.2

μg/m³

O₃

73.9

μg/m³

SO₂

1.2

μg/m³

CO

139.9

μg/m³

US EPA Index: 1 GB DEFRA Index: 1

Solar Radiation Data

Shortwave Radiation

97.16

Diffuse Radiation

45.74

DNI

8276.83

GTI

0

Weather Alerts

Some travel disruption is expected due to snow and ice.

East Midlands | East of England | London & South East England | North West England | South West England | Wales | West Midlands
Severity: Moderate Urgency: Future

An area of sleet and snow is expected to move southeastwards across parts of England and Wales, lasting approximately 2 or 3 hours in any one place. Where snow falls, 1 or 2 cm is likely for some and perhaps as much as 5 cm snow possible in a few spots, especially higher ground of north Wales and northwest England. Icy patches will also develop quickly as sleet and snow clears. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Keep yourself and your family safe when it is icy. Plan to leave the house at least five minutes earlier than normal. Not needing to rush, reduces your risk of accidents, slips, and falls. If you need to make a journey on foot, try to use pavements along main roads which are likely to be less slippery. Similarly, if cycling, try and stick to main roads which are more likely to have been treated. Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary. Snowy, wintry weather can cause delays and make driving conditions dangerous. Keep yourself and others safe by planning your route, giving yourself extra time for your journey. Check for road closures or delays to public transport and amend plans if necessary. If driving, make sure you have some essentials in your car in the event of any delays (e.g., warm clothing, food, water, a blanket, a torch, ice scraper/de icer, a warning triangle, high visibility vest and an in-car phone charger). Be prepared for weather warnings to change quickly: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area.

Event: Yellow snow warning Certainty: Likely Category: Met

Some travel disruption is expected due to snow and ice.: UPDATED

East Midlands | East of England | London & South East England | North West England | South West England | Wales | West Midlands
Severity: Moderate Urgency: Future

Information on update: Warning area expanded to cover parts of northwest England, the East Midlands and southern England. An area of sleet and snow is expected to move southeastwards across parts of England and Wales, lasting approximately 2 or 3 hours in any one place. Where snow falls, 1 or 2 cm is likely for some and perhaps as much as 5 cm snow possible in a few spots, especially higher ground of north Wales, northwest England and perhaps the northwest Midlands. Some ice may form as a result of precipitation falling on to frozen surfaces and icy patches will also develop quickly as sleet and snow clears. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings

Keep yourself and your family safe when it is icy. Plan to leave the house at least five minutes earlier than normal. Not needing to rush, reduces your risk of accidents, slips, and falls. If you need to make a journey on foot, try to use pavements along main roads which are likely to be less slippery. Similarly, if cycling, try and stick to main roads which are more likely to have been treated. Give yourself the best chance of avoiding delays by checking road conditions if driving, or bus and train timetables, amending your travel plans if necessary. Snowy, wintry weather can cause delays and make driving conditions dangerous. Keep yourself and others safe by planning your route, giving yourself extra time for your journey. Check for road closures or delays to public transport and amend plans if necessary. If driving, make sure you have some essentials in your car in the event of any delays (e.g., warm clothing, food, water, a blanket, a torch, ice scraper/de icer, a warning triangle, high visibility vest and an in-car phone charger). Be prepared for weather warnings to change quickly: when a weather warning is issued, the Met Office recommends staying up to date with the weather forecast in your area.

Event: Yellow snow warning Certainty: Likely Category: Met