Weather Forecast for Caernarfon
Gwynedd, United Kingdom
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Current Weather - Caernarfon: 3°C
Current Weather - Caernarfon: 3°C
Gwynedd, United Kingdom
Overcast
Feels like -1°C
Wind
18 km/h ESE
Humidity
60%
Pressure
1010 mb
UV Index
0
Visibility
10 km
Patchy rain nearby
Tuesday, February 17, 2026
High
5°C
Low
1°C
Rain Chance
86%
Hourly Forecast
1°C
Day Statistics
Maximum Wind
27 km/h
Humidity
74%
Precipitation
0 mm
UV Index
0
Visibility
10 km
Rain Chance
86%
Snow Chance
0%
Sun & Moon
Sunrise
07:31 AM
Sunset
05:33 PM
Moonrise
07:42 AM
Moonset
05:40 PM
Moon Phase
New Moon
Moon Illumination
0%
Air Quality
PM2.5
3.7
μg/m³
PM10
8.9
μg/m³
NO₂
3.4
μg/m³
O₃
75.9
μg/m³
SO₂
1.4
μg/m³
CO
162.5
μg/m³
Patchy rain nearby
Wednesday, February 18, 2026
High
4°C
Low
1°C
Rain Chance
89%
Hourly Forecast
1°C
1°C
1°C
1°C
1°C
1°C
2°C
2°C
3°C
3°C
4°C
4°C
4°C
4°C
4°C
4°C
4°C
4°C
3°C
3°C
3°C
3°C
3°C
2°C
Day Statistics
Maximum Wind
26 km/h
Humidity
79%
Precipitation
1 mm
UV Index
0
Visibility
10 km
Rain Chance
89%
Snow Chance
0%
Sun & Moon
Sunrise
07:29 AM
Sunset
05:34 PM
Moonrise
07:52 AM
Moonset
07:03 PM
Moon Phase
Waxing Crescent
Moon Illumination
0%
Air Quality
PM2.5
4.9
μg/m³
PM10
6.7
μg/m³
NO₂
5.5
μg/m³
O₃
66.8
μg/m³
SO₂
1.4
μg/m³
CO
165.1
μg/m³
Moderate rain
Thursday, February 19, 2026
High
5°C
Low
2°C
Rain Chance
88%
Hourly Forecast
2°C
2°C
2°C
2°C
2°C
2°C
2°C
2°C
2°C
3°C
3°C
3°C
4°C
4°C
5°C
5°C
5°C
5°C
4°C
5°C
4°C
3°C
3°C
3°C
Day Statistics
Maximum Wind
18 km/h
Humidity
94%
Precipitation
5 mm
UV Index
0
Visibility
6 km
Rain Chance
88%
Snow Chance
0%
Sun & Moon
Sunrise
07:27 AM
Sunset
05:36 PM
Moonrise
08:02 AM
Moonset
08:26 PM
Moon Phase
Waxing Crescent
Moon Illumination
3%
Air Quality
PM2.5
8.2
μg/m³
PM10
10.4
μg/m³
NO₂
8.6
μg/m³
O₃
55.5
μg/m³
SO₂
1.7
μg/m³
CO
190.6
μg/m³
Patchy rain nearby
Friday, February 20, 2026
High
10°C
Low
3°C
Rain Chance
88%
Hourly Forecast
3°C
3°C
4°C
5°C
6°C
7°C
7°C
8°C
9°C
9°C
9°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
9°C
9°C
10°C
10°C
Day Statistics
Maximum Wind
44 km/h
Humidity
94%
Precipitation
3 mm
UV Index
0
Visibility
9 km
Rain Chance
88%
Snow Chance
0%
Sun & Moon
Sunrise
07:25 AM
Sunset
05:38 PM
Moonrise
08:11 AM
Moonset
09:51 PM
Moon Phase
Waxing Crescent
Moon Illumination
7%
Air Quality
PM2.5
7.7
μg/m³
PM10
11.1
μg/m³
NO₂
2.9
μg/m³
O₃
82.9
μg/m³
SO₂
1.6
μg/m³
CO
153.4
μg/m³
Moderate rain
Saturday, February 21, 2026
High
10°C
Low
9°C
Rain Chance
89%
Hourly Forecast
10°C
10°C
10°C
10°C
9°C
9°C
9°C
9°C
9°C
9°C
9°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
10°C
Day Statistics
Maximum Wind
34 km/h
Humidity
97%
Precipitation
7 mm
UV Index
0
Visibility
8 km
Rain Chance
89%
Snow Chance
0%
Sun & Moon
Sunrise
07:22 AM
Sunset
05:40 PM
Moonrise
08:22 AM
Moonset
11:20 PM
Moon Phase
Waxing Crescent
Moon Illumination
14%
Air Quality
PM2.5
5.9
μg/m³
PM10
8.6
μg/m³
NO₂
2.4
μg/m³
O₃
85.8
μg/m³
SO₂
1.3
μg/m³
CO
143.7
μg/m³
Moderate rain
Sunday, February 22, 2026
High
10°C
Low
8°C
Rain Chance
75%
Hourly Forecast
10°C
10°C
10°C
10°C
10°C
9°C
9°C
9°C
9°C
9°C
9°C
9°C
10°C
10°C
9°C
9°C
9°C
9°C
9°C
8°C
8°C
8°C
8°C
8°C
Day Statistics
Maximum Wind
35 km/h
Humidity
97%
Precipitation
17 mm
UV Index
0
Visibility
7 km
Rain Chance
75%
Snow Chance
0%
Sun & Moon
Sunrise
07:20 AM
Sunset
05:42 PM
Moonrise
08:36 AM
Moonset
No moonset
Moon Phase
Waxing Crescent
Moon Illumination
23%
Partly Cloudy
Monday, February 23, 2026
High
10°C
Low
7°C
Rain Chance
0%
Hourly Forecast
7°C
7°C
7°C
7°C
7°C
8°C
8°C
8°C
8°C
8°C
8°C
9°C
9°C
9°C
10°C
10°C
9°C
9°C
9°C
9°C
9°C
9°C
8°C
8°C
Day Statistics
Maximum Wind
35 km/h
Humidity
85%
Precipitation
0 mm
UV Index
3
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
07:18 AM
Sunset
05:44 PM
Moonrise
08:54 AM
Moonset
12:50 AM
Moon Phase
Waxing Crescent
Moon Illumination
33%
Weather Alerts
A period of snow could bring some disruption to parts of Wales and central England later Wednesday and overnight into Thursday.
Whilst there is some uncertainty in the details, there is the potential for an area of rain and snow to affect parts of Wales and central England later on Wednesday and overnight into Thursday. 2-5 cm of snow could accumulate quite widely above 150-200 metres, with perhaps as much as 10-15 cm above 250-300 metres in mid and southeast Wales, as well as Herefordshire and Shropshire. Some small accumulations of snow, typically less than 2 cm, are possible to lower elevations, especially from later Wednesday evening into the early hours of Thursday morning. Strong east to northeasterly winds will accompany the wet weather, which could exacerbate impacts in places. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings
Snowy, wintry weather can cause delays and make driving conditions dangerous, so to keep yourself and others safe: plan your route, checking for delays and road closures, amending your travel plans if necessary; if driving, leave more time to prepare and check your car before setting off; make sure you have essentials packed in your car in the event of any delays (warm clothing, food, water, a blanket, a torch, ice scraper/de-icer, a warning triangle, high visibility vest and an in-car phone charger). People cope better when they have prepared in advance for the risk of power cuts or being cut off from services and amenities due to the snow. It’s easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items. 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.
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