Weather radar Cardiff
Real-time precipitation radar · Wales · United Kingdom
Cardiff climate table – average temperature, precipitation & sunshine hours
The climate table for Cardiff shows long-term monthly averages (2000–2023): average high and average low temperature in °C, monthly precipitation (mm), rainy days and sunshine hours per month. Data source: ERA5 reanalysis (ECMWF) via the WDTEC Climate Archive.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7.9° | 9.3° | 11° | 13° | 16.3° | 19.2° | 20.7° | 20.5° | 18.5° | 15.3° | 11.6° | 9.4° |
| Avg low (°C) | 3.5° | 5.1° | 5.4° | 6.1° | 9.9° | 12.7° | 14.5° | 14.5° | 12.8° | 10.9° | 7.4° | 6° |
| Precipitation (mm) | 96 | 95 | 88 | 62 | 83 | 60 | 85 | 60 | 129 | 134 | 125 | 128 |
| Rainy days | 12 | 13 | 13 | 12 | 14 | 11 | 14 | 11 | 15 | 18 | 15 | 15 |
| Sunshine hours | 126 | 131 | 216 | 280 | 330 | 335 | 337 | 303 | 225 | 181 | 129 | 92 |
| Humidity | 86% | 86% | 82% | 76% | 78% | 77% | 78% | 78% | 83% | 86% | 86% | 88% |
Best time to visit Cardiff
The best time to visit Cardiff is typically June. In this month the average high is 19.2°C, precipitation is 60 mm and sunshine duration is 335 hours. The annual average high is 14.4°C, total annual precipitation is 1145 mm (163 rainy days/year) and annual sunshine is 2685 hours.
Frequently asked questions about the weather in Cardiff
How up to date is the weather radar for Cardiff?
The weather radar for Cardiff is updated every 5 minutes with new radar data from the OPERA composite radar. A 2-hour forecast animation is also available. Rainfall probability, wind gusts and UV index are available up to 14 days in advance.
What weather data is available for Cardiff?
Besides the rain radar, RadarWeather provides for Cardiff: rainfall probability, thunderstorm warning (CAPE index), wind gusts, UV index, air pressure, humidity, dew point, sunshine hours, snow line and a 14-day forecast based on ICON-D2, ECMWF IFS and GFS.
When are thunderstorms expected in Cardiff?
The thunderstorm potential for Cardiff is calculated from the CAPE index and lightning potential. Active storm cells and severe weather warnings are visible on the radar map in real time. Thunderstorm warnings are issued automatically as soon as storm cells are detected near Cardiff.
What is the climate like in Cardiff?
Cardiff has an annual average high of 14.4°C. The warmest month is July (avg high 20.7°C), the coldest January (avg low 3.5°C). The wettest month is October with 134 mm, the driest June with 60 mm. Total annual precipitation is 1145 mm (163 rainy days). Annual sunshine is 2685 hours.
Weather radar near Cardiff
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