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Met Office Weather Cardiff – 7-Day Forecast and Hourly Updates

Arthur William Thompson Cooper • 2026-04-28 • Reviewed by Daniel Mercer

Cardiff residents and visitors seeking reliable weather information can access the Met Office’s comprehensive forecasts for the Welsh capital. The national weather service provides detailed predictions covering hourly updates, seven-day outlooks, and extended forecasts for multiple Cardiff locations including the city centre, Cardiff Heath, Maendy, Ely, and Llandaff.

The data reveals mild conditions across the region, with temperatures ranging from 9°C to 21°C in the coming days. Variable cloud cover, occasional light rain, and breezy conditions characterise the forecast period, reflecting typical spring weather patterns for this part of south Wales.

What is the Met Office 7-Day Weather Forecast for Cardiff?

Current Temperature
17°C (sunny)
Feels like 16°C
Today’s High/Low
Up to 19°C
Min 16°C
Tomorrow’s Outlook
High 21°C
Min 15°C
Warnings Status
Yellow warning noted
(UVL pollution context)

The seven-day forecast for Cardiff demonstrates considerable variability, with daytime temperatures climbing to 21°C on several days while overnight lows dip to around 9-10°C. The Met Office forecast for Cardiff Heath and surrounding areas indicates a generally mild pattern, though cloud cover and brief rain spells are expected to interrupt any prolonged sunny periods.

Key Forecast Insights

  • Thursday and Friday bring the warmest conditions, with highs reaching 21°C in central Cardiff
  • Day four shows a notable drop to 17°C maximum with light rain returning
  • Weekend outlook remains changeable with shower risks and breezy conditions
  • Coastal areas around Cardiff experience windier conditions than the city centre
  • Night-time temperatures fall to 10-11°C, requiring light jackets for evening activities
  • Precipitation probability varies from 10% during clearer spells to 40% during unsettled periods

Daily Temperature Snapshot

Day High (°C) Low (°C) Conditions
Today/Thu 18-19 16 Cloudy, mild, drizzle over hills
Day 2 21 14-15 Light rain to overcast
Day 3 21 14 Cloudy to sunny intervals
Day 4 17 10 Light rain to sunny intervals
Fri-Sun Varies Varies Changeable, showers, breezy

What is the Met Office Weather for Cardiff Tomorrow?

Tomorrow’s forecast for Cardiff shows a warming trend, with temperatures climbing from an overnight low of 11°C to reach 21°C by the afternoon. The Met Office hourly breakdown for central Cardiff indicates increasing cloud cover through the morning hours, with precipitation chances rising from 20% in early morning to around 40% by the afternoon.

Planning Ahead

Wind speeds are expected to range from 6-9 mph throughout tomorrow, making outdoor activities feasible but suggesting a light layer for exposed locations.

The transition from tonight to tomorrow morning shows temperatures holding steady around 11°C through the early hours, climbing to 14°C by 10am and reaching 16-17°C during the afternoon peak. Evening temperatures will ease back to around 13°C by 10pm, maintaining the mild overnight pattern typical of this forecast period.

Tomorrow’s Hourly Breakdown

Time Temperature (°C) Rain Chance (%) Wind (mph)
10:00 14 30 7
13:00 16 40 7
16:00 17 40 8
19:00 15 30 8
22:00 13 20 7

What Does the Met Office 14-Day Forecast Say for Cardiff Weather?

The Met Office does not publish a publicly detailed 14-day forecast through its standard Cardiff pages. However, extended hourly temperature data provides insight into conditions beyond the seven-day window, showing temperatures fluctuating between 9°C and 21°C over a 24+ hour period. The feels-like temperature range spans from 8°C to 17°C, indicating that the actual conditions may feel considerably cooler during breezy or overcast periods.

Extended Forecast

The Netweather service offers 14-day hourly forecasts for the Cardiff area, including pollen and UV indexes. For the most comprehensive extended outlook, users may wish to consult this alternative source alongside Met Office data.

The Wales regional outlook, available through the Met Office regional page, indicates breezy and showery trends continuing through the 28-day period. Near-average temperatures are expected overall, though Sunday temperatures are predicted to fall below the milder conditions seen earlier in the week.

Extended Temperature Range

Period Temperature Range (°C) Feels Like Range
Early morning 9-11 8-10
Midday 14-18 12-15
Afternoon peak 19-21 15-17
Evening 14-17 12-16

What is the Hourly Met Office Weather Forecast for Cardiff?

The current hourly forecast for Cardiff shows immediate conditions around 17°C under sunny skies, with the temperature feeling closer to 16°C due to a light breeze from the east-southeast. Precipitation chances remain below 5% for the next hour, while gusts reaching 11 mph are being recorded across the city centre area. Pollen levels are notably high, which may affect those with sensitivities.

Current to Late Evening

Time Temp (°C) Rain Chance (%) Wind (mph)
Current 17 <5 11 gusts
00:00 11 10 5
01:00 11 10 5
04:00 10 10 5
07:00 11 10 5

Overnight conditions through the small hours show temperatures dropping to 10°C by 4am, with precipitation chances holding at around 10% and winds remaining light at approximately 5 mph. The morning rush hour sees temperatures recover to 11°C by 7am, with conditions remaining dry but cloud cover expected to increase through the late morning period.

Health Advisory

High pollen levels are currently recorded for central Cardiff. Those with allergies or respiratory conditions should consider appropriate medication and limiting prolonged outdoor exposure during peak hours.

How Does BBC Weather Cardiff Compare to Met Office?

Both the BBC Weather service and the Met Office provide forecasts for Cardiff, though they differ in structure and depth. The BBC typically presents a day-by-day breakdown focusing on the immediate week ahead, using accessible language and clear H2 headings for today and tomorrow. The Met Office, as the national forecasting authority, offers more granular hourly data, multiple location-specific forecasts for areas like Maendy and Ely, and direct access to weather warnings.

The Met Office structure includes temperature blocks for the next hour and subsequent days, along with precipitation probabilities and wind information. BBC tends to emphasise imagery and straightforward daily summaries, making it accessible for quick checks. Met Office provides longer-term regional context through its main website, including five-day and 28-day outlooks for Wales.

Key Differences Summary

  • Met Office offers location-specific forecasts for multiple Cardiff areas including Llandaff and Heath
  • BBC provides day-by-day lists with a focus on immediate conditions
  • Met Office includes official weather warnings alongside forecasts
  • BBC features more imagery and visual presentations
  • Met Office hourly data extends further with feels-like temperatures
  • BBC forecasts typically shorter in range but more visually oriented

Cardiff Weather Timeline

Historical observations from the Met Office reveal the variability characteristic of Cardiff’s spring weather. Recent measurements recorded on Tuesday 21 April showed temperatures dropping to 10.1°C, while Thursday 23 April brought milder conditions reaching 18.5°C. This four-degree swing within days demonstrates the changeable nature of weather in this part of south Wales.

  1. Tuesday 21 April: Temperature low of 10.1°C recorded at Cardiff observation point
  2. Thursday 23 April: Maximum temperature reached 18.5°C during a milder spell
  3. Current period: Temperatures ranging 9-21°C with variable cloud and light rain
  4. Next 24 hours: Overnight lows around 10-11°C, daytime recovery to 17°C
  5. Day 2: Peak temperatures climbing to 21°C with increased cloud cover
  6. Day 3: Similar warmth at 21°C with cloudy to sunny intervals
  7. Day 4: Cooling trend begins with 17°C maximum and light rain returning
  8. Weekend: Changeable conditions with showers, breezy conditions, and cooler Sunday temperatures

What is Known and Unknown About Current Cardiff Weather

Established Information

  • Current temperature in central Cardiff: 17°C (sunny conditions)
  • Seven-day forecast shows temperatures between 9°C and 21°C
  • Precipitation probability varies from below 5% to 40% depending on time of day
  • Wind speeds generally light to moderate (5-11 mph in recent observations)
  • High pollen levels currently affecting central Cardiff
  • Yellow weather warning noted (context of UVL pollution)
  • Multiple Cardiff locations covered by Met Office forecasts including Heath, Maendy, Ely, and Llandaff

Information That Remains Unclear

  • Specific timing and intensity of weekend showers not yet precisely mapped
  • Whether the yellow warning relates to factors beyond UVL pollution requires further verification
  • Precise 14-day forecast details not available through standard Met Office Cardiff pages
  • AccuWeather Cardiff data not included in current available research

Understanding Cardiff’s Weather Patterns

Cardiff’s position on the south coast of Wales influences its weather characteristics, with maritime Atlantic air masses regularly affecting conditions throughout the year. The city experiences milder winters and cooler summers compared to inland areas of the UK, while coastal exposure can introduce breezy conditions, particularly during spring and autumn transition periods.

The current forecast period reflects typical spring behaviour for this region, with alternating high and low pressure systems bringing spells of sunshine interspersed with cloudier, showery periods. The temperature range of 9-21°C sits within normal parameters for late April and early May in south Wales, neither exceptionally warm nor notably cold for the season.

Sources and Official Data

The Met Office provides detailed 7-day forecasts for Cardiff locations, including hourly breakdowns, temperature ranges, precipitation chances, wind, and some warnings.

Met Office Cardiff Central Forecast

Data shows mild conditions with highs up to 21°C, lows around 9-16°C, variable cloud cover, light rain risks, and breezy winds.

Met Office Cardiff Heath Forecast

All temperature data and forecasts have been sourced directly from official Met Office channels for specific Cardiff locations. Where forecasts differ between areas, both perspectives have been presented to reflect the variation across the city.

Summary

The Met Office offers Cardiff residents comprehensive weather forecasting services covering hourly updates, seven-day outlooks, and regional extended forecasts. Current conditions show temperatures around 17°C with sunny skies, though cloud cover and light rain are expected to return over the coming days. The warmest conditions are forecast for Thursday and Friday, with temperatures reaching 21°C, before a cooling trend brings maximums of 17°C around day four. Wind speeds remain light to moderate, while high pollen levels currently affect those with sensitivities. For those seeking weather information for other UK locations, multiple regional forecast options provide similarly detailed data.

Frequently Asked Questions

What are current weather warnings for Cardiff?

A yellow weather warning has been noted in the Cardiff forecast area. The specific context relates to UVL pollution, though users should check the Met Office warnings page for the most current and detailed information on any active alerts.

Where can I find the 14-day forecast for Cardiff?

The standard Met Office Cardiff pages focus on seven-day forecasts with hourly details. For 14-day information, the Netweather service offers extended hourly forecasts including pollen and UV data for the Cardiff area.

How accurate is the Met Office forecast for Cardiff?

The Met Office provides official forecasts backed by extensive meteorological data and modelling systems. Short-term forecasts (24-48 hours) typically demonstrate high accuracy, while seven-day forecasts provide reasonable guidance with natural uncertainty increasing further from the present date.

What is the pollen count in Cardiff?

High pollen levels are currently recorded for central Cardiff. Those with allergies should take appropriate precautions, including carrying medication and limiting exposure during peak pollen hours.

How does Cardiff weather compare to other Welsh cities?

Cardiff, as the southernmost major city in Wales, tends to experience milder conditions than more northern locations such as Bangor or Wrexham. Coastal influences keep temperatures relatively moderate compared to inland areas, though coastal exposure can introduce stronger winds.

Can I get hourly updates for specific Cardiff neighbourhoods?

Yes, the Met Office provides location-specific forecasts for multiple Cardiff areas including Llandaff, Maendy and Ely, and the city centre. Each location offers tailored hourly breakdowns.


Arthur William Thompson Cooper

About the author

Arthur William Thompson Cooper

We publish daily fact-based reporting with continuous editorial review.