Weather Forecast for Holyhead
Isle of Anglesey, United Kingdom
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Current Weather - Holyhead: 15°C
Current Weather - Holyhead: 15°C
Isle of Anglesey, United Kingdom
Light rain shower
Feels like 14°C
Wind
10 km/h WNW
Humidity
87%
Pressure
1002 mb
UV Index
0
Visibility
10 km
Patchy rain nearby
Wednesday, August 19, 2026
High
17°C
Low
14°C
Rain Chance
76%
Hourly Forecast
14°C
Day Statistics
Maximum Wind
29 km/h
Humidity
80%
Precipitation
4 mm
UV Index
5
Visibility
10 km
Rain Chance
76%
Snow Chance
0%
Sun & Moon
Sunrise
06:05 AM
Sunset
08:38 PM
Moonrise
03:12 PM
Moonset
10:27 PM
Moon Phase
First Quarter
Moon Illumination
48%
Air Quality
PM2.5
3.5
μg/m³
PM10
8.3
μg/m³
NO₂
1.3
μg/m³
O₃
63.6
μg/m³
SO₂
0.2
μg/m³
CO
135.3
μg/m³
Patchy rain nearby
Thursday, August 20, 2026
High
16°C
Low
12°C
Rain Chance
80%
Hourly Forecast
14°C
14°C
14°C
14°C
13°C
13°C
13°C
14°C
14°C
15°C
16°C
15°C
15°C
15°C
16°C
16°C
16°C
16°C
16°C
15°C
14°C
13°C
12°C
12°C
Day Statistics
Maximum Wind
25 km/h
Humidity
82%
Precipitation
8 mm
UV Index
4
Visibility
10 km
Rain Chance
80%
Snow Chance
0%
Sun & Moon
Sunrise
06:07 AM
Sunset
08:36 PM
Moonrise
04:30 PM
Moonset
10:57 PM
Moon Phase
First Quarter
Moon Illumination
58%
Air Quality
PM2.5
2.5
μg/m³
PM10
4.9
μg/m³
NO₂
2.5
μg/m³
O₃
55
μg/m³
SO₂
0.2
μg/m³
CO
135.3
μg/m³
Patchy rain nearby
Friday, August 21, 2026
High
16°C
Low
11°C
Rain Chance
51%
Hourly Forecast
12°C
12°C
12°C
11°C
12°C
11°C
11°C
12°C
13°C
13°C
13°C
14°C
14°C
15°C
16°C
16°C
16°C
16°C
16°C
15°C
14°C
13°C
12°C
12°C
Day Statistics
Maximum Wind
17 km/h
Humidity
74%
Precipitation
1 mm
UV Index
4
Visibility
10 km
Rain Chance
51%
Snow Chance
0%
Sun & Moon
Sunrise
06:09 AM
Sunset
08:34 PM
Moonrise
05:36 PM
Moonset
11:41 PM
Moon Phase
First Quarter
Moon Illumination
69%
Air Quality
PM2.5
2.7
μg/m³
PM10
6.3
μg/m³
NO₂
1.8
μg/m³
O₃
62.4
μg/m³
SO₂
0.2
μg/m³
CO
146.6
μg/m³
Sunny
Saturday, August 22, 2026
High
16°C
Low
11°C
Rain Chance
15%
Hourly Forecast
12°C
11°C
12°C
12°C
11°C
11°C
11°C
11°C
13°C
14°C
14°C
15°C
15°C
15°C
16°C
16°C
16°C
16°C
16°C
15°C
14°C
13°C
13°C
12°C
Day Statistics
Maximum Wind
20 km/h
Humidity
74%
Precipitation
0 mm
UV Index
4
Visibility
10 km
Rain Chance
15%
Snow Chance
0%
Sun & Moon
Sunrise
06:11 AM
Sunset
08:31 PM
Moonrise
06:27 PM
Moonset
Does not set today
Moon Phase
Waxing Gibbous
Moon Illumination
78%
Air Quality
PM2.5
5.3
μg/m³
PM10
7.1
μg/m³
NO₂
1.8
μg/m³
O₃
71.1
μg/m³
SO₂
0.8
μg/m³
CO
98.1
μg/m³
Sunny
Sunday, August 23, 2026
High
17°C
Low
11°C
Rain Chance
22%
Hourly Forecast
12°C
12°C
12°C
12°C
12°C
12°C
12°C
13°C
13°C
14°C
14°C
16°C
16°C
15°C
17°C
17°C
15°C
17°C
17°C
15°C
14°C
13°C
11°C
13°C
Day Statistics
Maximum Wind
17 km/h
Humidity
78%
Precipitation
0 mm
UV Index
5
Visibility
10 km
Rain Chance
22%
Snow Chance
0%
Sun & Moon
Sunrise
06:12 AM
Sunset
08:29 PM
Moonrise
07:03 PM
Moonset
12:38 AM
Moon Phase
Waxing Gibbous
Moon Illumination
86%
Air Quality
PM2.5
9.1
μg/m³
PM10
11.9
μg/m³
NO₂
2.1
μg/m³
O₃
75.2
μg/m³
SO₂
1.1
μg/m³
CO
166.1
μg/m³
Partly Cloudy
Monday, August 24, 2026
High
22°C
Low
12°C
Rain Chance
9%
Hourly Forecast
13°C
13°C
12°C
12°C
12°C
12°C
12°C
13°C
14°C
17°C
18°C
20°C
21°C
21°C
22°C
22°C
22°C
21°C
20°C
20°C
18°C
16°C
14°C
14°C
Day Statistics
Maximum Wind
19 km/h
Humidity
65%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
9%
Snow Chance
0%
Sun & Moon
Sunrise
06:14 AM
Sunset
08:27 PM
Moonrise
07:28 PM
Moonset
01:46 AM
Moon Phase
Waxing Gibbous
Moon Illumination
93%
Overcast
Tuesday, August 25, 2026
High
22°C
Low
14°C
Rain Chance
48%
Hourly Forecast
14°C
14°C
14°C
14°C
14°C
14°C
14°C
14°C
16°C
17°C
19°C
20°C
20°C
21°C
21°C
22°C
22°C
21°C
20°C
19°C
18°C
17°C
16°C
15°C
Day Statistics
Maximum Wind
27 km/h
Humidity
60%
Precipitation
1 mm
UV Index
5
Visibility
10 km
Rain Chance
48%
Snow Chance
0%
Sun & Moon
Sunrise
06:16 AM
Sunset
08:25 PM
Moonrise
07:46 PM
Moonset
03:00 AM
Moon Phase
Full Moon
Moon Illumination
97%
Weather Alerts
Heavy showers and thunderstorms likely to lead to some travel disruption and flash flooding.
Heavy showers will develop this evening, becoming more frequent and widespread overnight. These are likely to bring 15 to 20 mm in an hour in some areas with as much as 30 to 50 mm falling in a period of six hours in some places. These accumulations may lead to a few places seeing some flooding. Alongside the rain, some showers are likely to be thundery, bringing the additional hazards of lightning and hail. The showers will ease from the northwest Thursday morning. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings
Consider if your location is at risk of flash flooding. If so, consider preparing a flood plan and an emergency flood kit. 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 find yourself outside and hear thunder, protect yourself by finding a safe enclosed shelter (such as a car). Do not shelter under or near trees, or other structures which may be struck by lightning. If you are on an elevated area, move to lower ground. 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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