Weather Merthyr Tydfil

Daily forecast
Day Weather Maximum Day Temperature Minimum Night Temperature Wind Direction and Speed

Light Cloud

15°C 59°F 10°C 50°F North Westerly
Wind Speed 18 km/h 11 mph

Light Cloud

16°C 61°F 5°C 41°F North North Westerly
Wind Speed 13 km/h 8 mph

Light Cloud

14°C 57°F 8°C 46°F West South Westerly
Wind Speed 19 km/h 12 mph

Light Cloud

12°C 54°F 6°C 43°F Westerly
Wind Speed 24 km/h 15 mph

Light Rain

11°C 52°F 7°C 45°F West South Westerly
Wind Speed 23 km/h 14 mph



Sunrise 05:08 Sunset 21:14

Last updated 15:10

Weather forecast details for Monday 25 May. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 1600 hours1900 hours2200 hours0100 hours
0400 hours   
Weather Conditions Light Cloud Sunny Intervals Light Cloud Thick Cloud Light Cloud    
Temperature (°C/°F) 14°C 57°F 14°C 57°F 11°C 52°F 11°C 52°F 10°C 50°F    
Wind Speed (mph/km/h) Wind Speed 14 km/h 9 mph North Westerly Wind Speed 14 km/h 9 mph North North Westerly Wind Speed 8 km/h 5 mph North Westerly Wind Speed 8 km/h 5 mph North Westerly Wind Speed 8 km/h 5 mph North Westerly    
Wind Direction NW NNW NW NW NW    
Humidity 65% 69% 79% 82% 82%    
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) VG VG G G VG    
Pressure (Millibars) 1019 1020 1021 1022 1023    


Forecast Summary

  • Today

    Southern and eastern areas will see a few bright spells, but on the whole it will be a rather cloudy day with the odd spot of light rain or drizzle. Feeling rather cool in the northwesterly breeze.

  • Tonight

    Most places will have a dry but cloudy night. A few spots of drizzle are possible, chiefly in the north and west, whilst the east may see occasional clear intervals.

Environmental Summary

UV: 5

UK Range: 1-7

Pollution: Low

UK Range: Low to Very High

Pollen: Moderate

UK Range: Low to Very High

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Forecast Video

BBC Wales Today

BBC Wales Today Forecast Last updated 15:24, Monday 25 May Forecast updated Monday to Friday only


UK Forecast Last updated 12:24, Monday 25 May


Observed at 14:00, Monday 25 May

Light Cloud

15°C 59°F

Wind Speed 27 km/h 17 mph West North Westerly

Humidity: 67%

Visibility: Very Good

Pressure: 1020mb, Falling

Observation station: Sennybridge

(Lat: 52.067 | Lon: -3.617)

BBC Weather in association with the Met Office

All times are BST (Europe/London, GMT+0100) unless otherwise stated

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