11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Light rain
8°
Feels like 4°
Wind↑ ENE 22 km/h
Gusts39 km/h
Humidity 88 %
💧 3.2 mm
Evening
Mainly clear
7°
Feels like 3°
Wind↑ NNE 24 km/h
Gusts46 km/h
Humidity 83 %
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Clear sky
5°
Feels like 2°
Wind↑ N 17 km/h
Gusts40 km/h
Humidity 82 %
Evening
Mainly clear
6°
Feels like 4°
Wind↑ N 7 km/h
Humidity 81 %
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Partly cloudy
4°
Feels like 2°
Wind↑ NW 9 km/h
Humidity 91 %
Evening
Mainly clear
6°
Feels like 4°
Wind↑ NW 9 km/h
Humidity 87 %
14-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Overcast
7°
Feels like 7°
Wind↑ NNE 6 km/h
Humidity 90 %
Cardiff forecast in charts · next 7 days
The week ahead: highs and lows
≈ A week close to the usual temperatures
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Cardiff climate: what a normal year looks like
From 16 h 38 min of daylight in late June to 7 h 50 min in late December.
The hottest stretch is July, when afternoons average 20 °C; the coldest is February, when nights average 3 °C.
There is no real dry season: monthly rainfall stays between 72 mm and 108 mm on average.
Even the coldest month, February, keeps nights above freezing on average (3 °C).
Forecast highs for the coming week average 12 °C, 2 °C cooler than a normal October (14 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
8 °C
4 °C
97 mm
Feb
8 °C
3 °C
77 mm
Mar
10 °C
5 °C
72 mm
Apr
12 °C
6 °C
74 mm
May
15 °C
9 °C
78 mm
Jun
18 °C
12 °C
76 mm
Jul
20 °C
14 °C
79 mm
Aug
20 °C
14 °C
91 mm
Sep
17 °C
12 °C
78 mm
Oct
14 °C
9 °C
108 mm
Nov
11 °C
6 °C
105 mm
Dec
8 °C
4 °C
108 mm
Whole year
13 °C
8 °C
1,040 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 51.48° N, 3.18° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Cardiff: pollution and pollen
2/6
Fair
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.54µg/m³
PM1012µg/m³
O₃58µg/m³
NO₂6µg/m³
SO₂1µg/m³
Pollen
AlderNone
BirchNone
GrassNone
MugwortNone
OliveNone
RagweedNone
Copernicus CAMS model, updated several times a day.
Rain radar around Cardiff
Rain observed over the last two hours by official weather radars around Cardiff, followed by the radar forecast for the next hour where the weather service provides one.
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Rain radarLast two hours, then forecast where available · drag the timeline
Moon over Cardiff
Waning gibbous
87 % illuminated · 18.3 days
Rise 06:13 Set —
Fri30/1079%
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Moonrise and moonset in local time (Europe/London); phase and lit fraction from a synodic calculation.
Sea and tides near Cardiff
Tide station used: Cardiff
🌊 Sea surface
14.4 °C
satellite, 29/10
Sea state
Rippled
waves 0.1 m
Period
2 s
Swell
0.0 m
TodayThu 29/10
Low tide02:391.0 m
High tide08:3911.5 m
Low tide15:001.1 m
High tide21:0211.2 m
TomorrowFri 30/10
Low tide03:191.5 m
High tide09:2411.0 m
Low tide15:421.6 m
High tide21:4910.5 m
SatSat 31/10
Low tide04:032.0 m
High tide10:1410.4 m
Low tide16:312.2 m
High tide22:449.8 m
SunSun 01/11
Low tide04:542.6 m
High tide11:149.7 m
Low tide17:302.7 m
High tide23:509.2 m
Indicative heights above chart datum. Coefficient: 20 for the weakest tides, 120 for the strongest. · more tide detail on TidesAtlas
Look up a past day in Cardiff
Curious about the weather in Cardiff on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Cardiff weather at a glance
This page gathers everything about the weather in Cardiff, WLS: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “partly cloudy”, it is 13 °C (feels like 13 °C) and the wind blows at 8 km/h.
Expected range today: 10 °C to 14 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms, plus the tide times for Cardiff.
Use the Cardiff forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
