Weather Forecast for Cardiff
Cardiff, United Kingdom
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Current Weather - Cardiff: 30°C
Current Weather - Cardiff: 30°C
Cardiff, United Kingdom
Sunny
Feels like 26°C
Wind
22 km/h WSW
Humidity
35%
Pressure
1018 mb
UV Index
5
Visibility
10 km
Sunny
Thursday, August 13, 2026
High
30°C
Low
18°C
Rain Chance
3%
Hourly Forecast
30°C
29°C
27°C
25°C
22°C
21°C
19°C
18°C
Day Statistics
Maximum Wind
28 km/h
Humidity
54%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
3%
Snow Chance
0%
Sun & Moon
Sunrise
05:55 AM
Sunset
08:39 PM
Moonrise
06:20 AM
Moonset
08:54 PM
Moon Phase
New Moon
Moon Illumination
2%
Air Quality
PM2.5
12.2
μg/m³
PM10
18.5
μg/m³
NO₂
9.2
μg/m³
O₃
84.4
μg/m³
SO₂
1.3
μg/m³
CO
196.1
μg/m³
Sunny
Friday, August 14, 2026
High
24°C
Low
16°C
Rain Chance
9%
Hourly Forecast
18°C
18°C
17°C
17°C
17°C
16°C
16°C
17°C
19°C
20°C
21°C
23°C
24°C
24°C
24°C
24°C
23°C
23°C
24°C
23°C
22°C
19°C
17°C
16°C
Day Statistics
Maximum Wind
26 km/h
Humidity
75%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
9%
Snow Chance
0%
Sun & Moon
Sunrise
05:57 AM
Sunset
08:37 PM
Moonrise
07:52 AM
Moonset
09:08 PM
Moon Phase
Waxing Crescent
Moon Illumination
5%
Air Quality
PM2.5
5.2
μg/m³
PM10
8.8
μg/m³
NO₂
6.8
μg/m³
O₃
47.7
μg/m³
SO₂
1.1
μg/m³
CO
167.6
μg/m³
Sunny
Saturday, August 15, 2026
High
24°C
Low
13°C
Rain Chance
4%
Hourly Forecast
16°C
15°C
15°C
14°C
14°C
14°C
13°C
14°C
17°C
18°C
20°C
21°C
22°C
23°C
24°C
24°C
24°C
24°C
23°C
22°C
19°C
16°C
14°C
13°C
Day Statistics
Maximum Wind
23 km/h
Humidity
61%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
4%
Snow Chance
0%
Sun & Moon
Sunrise
05:58 AM
Sunset
08:35 PM
Moonrise
09:21 AM
Moonset
09:21 PM
Moon Phase
Waxing Crescent
Moon Illumination
11%
Air Quality
PM2.5
3.1
μg/m³
PM10
6
μg/m³
NO₂
3.5
μg/m³
O₃
53.8
μg/m³
SO₂
0.4
μg/m³
CO
127.8
μg/m³
Sunny
Sunday, August 16, 2026
High
23°C
Low
10°C
Rain Chance
3%
Hourly Forecast
12°C
11°C
11°C
10°C
10°C
10°C
10°C
11°C
14°C
17°C
18°C
19°C
21°C
21°C
22°C
22°C
23°C
23°C
22°C
21°C
20°C
17°C
16°C
15°C
Day Statistics
Maximum Wind
19 km/h
Humidity
58%
Precipitation
0 mm
UV Index
4
Visibility
10 km
Rain Chance
3%
Snow Chance
0%
Sun & Moon
Sunrise
06:00 AM
Sunset
08:33 PM
Moonrise
10:47 AM
Moonset
09:35 PM
Moon Phase
Waxing Crescent
Moon Illumination
18%
Air Quality
PM2.5
20
μg/m³
PM10
22.5
μg/m³
NO₂
7.3
μg/m³
O₃
62.8
μg/m³
SO₂
1.6
μg/m³
CO
122.5
μg/m³
Partly Cloudy
Monday, August 17, 2026
High
22°C
Low
12°C
Rain Chance
10%
Hourly Forecast
14°C
13°C
14°C
13°C
12°C
13°C
12°C
13°C
16°C
18°C
17°C
20°C
21°C
19°C
22°C
21°C
20°C
20°C
20°C
18°C
18°C
17°C
17°C
16°C
Day Statistics
Maximum Wind
28 km/h
Humidity
67%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
10%
Snow Chance
0%
Sun & Moon
Sunrise
06:01 AM
Sunset
08:31 PM
Moonrise
12:11 PM
Moonset
09:50 PM
Moon Phase
Waxing Crescent
Moon Illumination
27%
Air Quality
PM2.5
21.9
μg/m³
PM10
25.2
μg/m³
NO₂
11.2
μg/m³
O₃
42.5
μg/m³
SO₂
2.1
μg/m³
CO
233
μg/m³
Patchy rain nearby
Tuesday, August 18, 2026
High
20°C
Low
15°C
Rain Chance
58%
Hourly Forecast
16°C
16°C
17°C
17°C
17°C
18°C
18°C
18°C
19°C
19°C
19°C
19°C
19°C
19°C
20°C
20°C
20°C
20°C
19°C
19°C
18°C
17°C
15°C
15°C
Day Statistics
Maximum Wind
38 km/h
Humidity
87%
Precipitation
1 mm
UV Index
5
Visibility
10 km
Rain Chance
58%
Snow Chance
0%
Sun & Moon
Sunrise
06:03 AM
Sunset
08:29 PM
Moonrise
01:34 PM
Moonset
10:08 PM
Moon Phase
First Quarter
Moon Illumination
37%
Sunny
Wednesday, August 19, 2026
High
23°C
Low
13°C
Rain Chance
7%
Hourly Forecast
15°C
15°C
15°C
14°C
14°C
14°C
14°C
14°C
15°C
17°C
18°C
19°C
20°C
21°C
22°C
22°C
23°C
22°C
21°C
20°C
18°C
16°C
13°C
13°C
Day Statistics
Maximum Wind
26 km/h
Humidity
62%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
7%
Snow Chance
0%
Sun & Moon
Sunrise
06:04 AM
Sunset
08:27 PM
Moonrise
02:55 PM
Moonset
10:33 PM
Moon Phase
First Quarter
Moon Illumination
48%
Solar Radiation Data
Shortwave Radiation
778.4
Diffuse Radiation
84.34
DNI
0
GTI
0
Weather Alerts
Very high temperatures may lead to impacts on Thursday.: UPDATED
Information on update: Warning area updated and further details as highest temperatures are expected to occur further west. Following a warm night, a spell of very hot weather will affect England on Thursday. The highest temperatures will be in parts of the the Midlands and western England, where 37 or even 38 Celsius could be reached. This may lead to impacts on transport, infrastructure and health. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings
Keep yourself safe by following these simple steps to reduce the likelihood of the heat making you feel unwell; drink plenty of fluids, keep out of the sun and avoid any exercise between 11am-3pm when the sun is strongest and close curtains in rooms that face the sun. If you are going out take water with you, stay in the shade, wear sunscreen and a wide brimmed hat. 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. If using public transport, there are many simple things you can do to keep yourself safe; carry water with you, take a small hand-held battery powered fan, if you feel unwell get off at next stop for some fresh air, dress in light fabrics in light colours to help stay cooler, keep an eye on fellow passengers for signs they may be struggling. Help to protect vulnerable people that you know including older people, those with underlying conditions and those who live alone; they may need support to keep cool and stay hydrated. If you are worried about your health, or that of somebody you know, ring NHS 111. Keep yourself safe whilst enjoying the water in this weather by following these simple steps: enter the water gradually, avoiding jumping or diving straight in, to reduce your risk of cold water shock, go to a lifeguarded beach or a supervised swimming area, and, if you, or anyone else, get into difficulty in the water, float on your back. 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. Stay up to date with the weather forecast for your area and follow any advice from emergency services and local authorities.
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