Cardiff Weather Forecast
Cardiff weather: 58°F, partly cloudy. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Climate in Cardiff month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 46° | 36° | 5,5 in | ★★☆☆☆ |
| February | 49° | 41° | 6,2 in | ★★☆☆☆ |
| March | 54° | 40° | 3,5 in | ★★★☆☆ |
| April | 58° | 44° | 4,0 in | ★★★☆☆ |
| May | 65° | 50° | 3,8 in | ★★★★☆ |
| June | 68° | 54° | 3,6 in | ★★★★☆ |
| July | 73° | 57° | 2,3 in | ★★★★☆ |
| August | 70° | 56° | 2,2 in | ★★★★☆ |
| September | 65° | 53° | 5,9 in | ★★★☆☆ |
| October | 59° | 49° | 5,9 in | ★★★☆☆ |
| November | 52° | 43° | 5,2 in | ★★★☆☆ |
| December | 50° | 42° | 6,8 in | ★★☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Best time to visit Cardiff
Go in June, July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
Recent extremes in Cardiff
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Cardiff compares with nearby places
Annual averages, and the difference against Cardiff.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Bristol | 26 mi | 53°F | about the same | 42 in |
| Somerset | 28 mi | 54°F | +33°F warmer | 37 in |
| Bath | 36 mi | 52°F | 33°F cooler | 39 in |
| Devon | 55 mi | 53°F | about the same | 44 in |
| Stonehenge | 62 mi | 52°F | about the same | 37 in |
What to pack, what to skip
- Sunglasses, a brimmed hat and SPF 30+
- A packable rain shell - 5 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
See the Cardiff forecast by time range
Cardiff weather - more answers
Explore Cardiff
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Cardiff?
Cardiff is a city in South Wales. Its coordinates are 51.4816, -3.1791. It lies in Europe.
What is the weather like in Cardiff right now?
It is currently 58°F (15°C) with partly cloudy. Humidity is 68% and wind is 2 mph.
When is the best time to visit Cardiff?
June, July and August offer the most comfortable conditions in Cardiff, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Cardiff in?
Cardiff observes Europe/London (UTC+01:00). The local time is 2:15 AM.
How many people live in Cardiff?
Cardiff has a population of approximately 375.000.
What is the nearest airport to Cardiff?
The closest airports are London Heathrow Airport (LHR), 117 mi away, London Gatwick Airport (LGW), 131 mi away and Dublin Airport (DUB), 187 mi away.
What are the top things to do in Cardiff?
Popular options include Stonehenge, Avebury and Associated Sites, Stonehenge, Snowdonia National Park, River Thames, British Museum and Big Ben and the Houses of Parliament.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-supported) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 2:15 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
