Weather Forecast for Caernarfon
Gwynedd, United Kingdom
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Current Weather - Caernarfon: 10°C
Current Weather - Caernarfon: 10°C
Gwynedd, United Kingdom
Light rain
Feels like 5°C
Wind
55 km/h SSW
Humidity
94%
Pressure
998 mb
UV Index
0
Visibility
4 km
Moderate rain
Thursday, March 12, 2026
High
11°C
Low
4°C
Rain Chance
97%
Hourly Forecast
10°C
10°C
11°C
11°C
10°C
10°C
9°C
9°C
8°C
7°C
5°C
5°C
4°C
Day Statistics
Maximum Wind
57 km/h
Humidity
88%
Precipitation
7 mm
UV Index
0
Visibility
8 km
Rain Chance
97%
Snow Chance
0%
Sun & Moon
Sunrise
06:39 AM
Sunset
06:16 PM
Moonrise
04:03 AM
Moonset
10:06 AM
Moon Phase
Waning Crescent
Moon Illumination
44%
Air Quality
PM2.5
4.7
μg/m³
PM10
13.9
μg/m³
NO₂
1.3
μg/m³
O₃
88.3
μg/m³
SO₂
0.9
μg/m³
CO
136.6
μg/m³
Patchy rain nearby
Friday, March 13, 2026
High
6°C
Low
2°C
Rain Chance
91%
Hourly Forecast
4°C
3°C
3°C
3°C
3°C
3°C
3°C
3°C
4°C
4°C
5°C
5°C
6°C
6°C
6°C
5°C
3°C
3°C
4°C
4°C
5°C
3°C
2°C
2°C
Day Statistics
Maximum Wind
41 km/h
Humidity
77%
Precipitation
5 mm
UV Index
0
Visibility
9 km
Rain Chance
91%
Snow Chance
0%
Sun & Moon
Sunrise
06:36 AM
Sunset
06:17 PM
Moonrise
04:44 AM
Moonset
11:13 AM
Moon Phase
Waning Crescent
Moon Illumination
35%
Air Quality
PM2.5
3.7
μg/m³
PM10
10.4
μg/m³
NO₂
1.7
μg/m³
O₃
88.8
μg/m³
SO₂
1.1
μg/m³
CO
154.8
μg/m³
Patchy rain nearby
Saturday, March 14, 2026
High
8°C
Low
2°C
Rain Chance
87%
Hourly Forecast
3°C
3°C
3°C
3°C
3°C
2°C
3°C
3°C
4°C
6°C
6°C
7°C
7°C
8°C
8°C
8°C
7°C
7°C
6°C
5°C
5°C
5°C
4°C
3°C
Day Statistics
Maximum Wind
24 km/h
Humidity
83%
Precipitation
3 mm
UV Index
1
Visibility
10 km
Rain Chance
87%
Snow Chance
0%
Sun & Moon
Sunrise
06:34 AM
Sunset
06:19 PM
Moonrise
05:13 AM
Moonset
12:29 PM
Moon Phase
Waning Crescent
Moon Illumination
26%
Air Quality
PM2.5
4
μg/m³
PM10
10.1
μg/m³
NO₂
1.7
μg/m³
O₃
85.5
μg/m³
SO₂
1
μg/m³
CO
149.8
μg/m³
Moderate rain
Sunday, March 15, 2026
High
8°C
Low
3°C
Rain Chance
85%
Hourly Forecast
3°C
3°C
3°C
3°C
3°C
3°C
3°C
4°C
6°C
6°C
6°C
6°C
8°C
8°C
8°C
8°C
7°C
6°C
5°C
5°C
4°C
4°C
4°C
4°C
Day Statistics
Maximum Wind
37 km/h
Humidity
87%
Precipitation
5 mm
UV Index
1
Visibility
10 km
Rain Chance
85%
Snow Chance
0%
Sun & Moon
Sunrise
06:32 AM
Sunset
06:21 PM
Moonrise
05:33 AM
Moonset
01:51 PM
Moon Phase
Waning Crescent
Moon Illumination
18%
Air Quality
PM2.5
6
μg/m³
PM10
8.8
μg/m³
NO₂
2.6
μg/m³
O₃
84
μg/m³
SO₂
1.3
μg/m³
CO
136.5
μg/m³
Patchy rain nearby
Monday, March 16, 2026
High
9°C
Low
3°C
Rain Chance
87%
Hourly Forecast
3°C
4°C
4°C
4°C
4°C
5°C
5°C
6°C
7°C
6°C
8°C
9°C
9°C
8°C
8°C
9°C
8°C
8°C
8°C
8°C
8°C
8°C
8°C
8°C
Day Statistics
Maximum Wind
37 km/h
Humidity
82%
Precipitation
1 mm
UV Index
2
Visibility
9 km
Rain Chance
87%
Snow Chance
0%
Sun & Moon
Sunrise
06:29 AM
Sunset
06:23 PM
Moonrise
05:48 AM
Moonset
03:14 PM
Moon Phase
Waning Crescent
Moon Illumination
11%
Air Quality
PM2.5
7.3
μg/m³
PM10
11
μg/m³
NO₂
2.1
μg/m³
O₃
92.8
μg/m³
SO₂
1.2
μg/m³
CO
144
μg/m³
Patchy rain nearby
Tuesday, March 17, 2026
High
10°C
Low
6°C
Rain Chance
84%
Hourly Forecast
8°C
8°C
8°C
8°C
8°C
8°C
8°C
8°C
8°C
8°C
9°C
9°C
9°C
10°C
10°C
10°C
10°C
9°C
9°C
8°C
7°C
6°C
6°C
6°C
Day Statistics
Maximum Wind
36 km/h
Humidity
86%
Precipitation
1 mm
UV Index
2
Visibility
8 km
Rain Chance
84%
Snow Chance
0%
Sun & Moon
Sunrise
06:27 AM
Sunset
06:25 PM
Moonrise
06:00 AM
Moonset
04:37 PM
Moon Phase
Waning Crescent
Moon Illumination
5%
Patchy rain nearby
Wednesday, March 18, 2026
High
6°C
Low
5°C
Rain Chance
76%
Hourly Forecast
5°C
5°C
5°C
5°C
5°C
5°C
5°C
5°C
5°C
5°C
6°C
6°C
6°C
6°C
6°C
5°C
5°C
5°C
6°C
5°C
5°C
5°C
4°C
3°C
Day Statistics
Maximum Wind
11 km/h
Humidity
91%
Precipitation
3 mm
UV Index
2
Visibility
6 km
Rain Chance
76%
Snow Chance
0%
Sun & Moon
Sunrise
06:24 AM
Sunset
06:27 PM
Moonrise
06:10 AM
Moonset
06:02 PM
Moon Phase
Waning Crescent
Moon Illumination
1%
Solar Radiation Data
Shortwave Radiation
7.72
Diffuse Radiation
5.22
DNI
5.74
GTI
2.89
Weather Alerts
A period of strong winds, accompanied by heavy rain, is expected on Thursday with some transport disruption possible.
Strong winds are expected during Thursday associated with an active weather front moving southeastwards across the UK. Gusts of 50-55 mph are expected widely, with some coastal locations and areas downwind of high ground seeing gusts of 60 mph or even 70 mph in a few places. Winds will ease from the north through the day. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings
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. People cope better with power cuts when they have prepared for them in advance. It’s easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items. If you are on the coast, stay safe during stormy weather by being aware of large waves. Even from the shore large breaking waves can sweep you off your feet and out to sea. Take care if walking near cliffs; know your route and keep dogs on a lead. In an emergency, call 999 and ask for the Coastguard. 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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