Weather Porthmadog

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


8°C 46°F 4°C 39°F North Westerly
29km/h 18mph

Thick Cloud

8°C 46°F 7°C 45°F South Westerly
26km/h 16mph

Light Rain

8°C 46°F 8°C 46°F South South Westerly
31km/h 19mph

Thick Cloud

9°C 48°F 8°C 46°F South South Westerly
37km/h 23mph

Heavy Rain

9°C 48°F 3°C 37°F West North Westerly
19km/h 12mph



Sunrise 06:58 Sunset 18:00

Last updated 13:10

Weather forecast details for Wednesday 4 March. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 1400 hours1500 hours1600 hours1700 hours1800 hours1900 hours2000 hours2100 hours2200 hours2300 hours0000 hours
0100 hours0200 hours0300 hours0400 hours0500 hours        
Weather Conditions Sunny Sunny Sunny Sunny Clear Sky Clear Sky Clear Sky Partly Cloudy Partly Cloudy Light Cloud Light Cloud Light Cloud Light Cloud Light Cloud Thick Cloud Thick Cloud         
Temperature (°C/°F) 8°C 46°F 8°C 46°F 7°C 45°F 7°C 45°F 5°C 41°F 5°C 41°F 5°C 41°F 5°C 41°F 4°C 39°F 5°C 41°F 6°C 43°F 6°C 43°F 6°C 43°F 6°C 43°F 7°C 45°F 7°C 45°F         
Wind Speed (mph/km/h) 26km/h 16mph North Westerly 23km/h 14mph North Westerly 19km/h 12mph West North Westerly 11km/h 7mph West North Westerly 10km/h 6mph Westerly 10km/h 6mph Westerly 10km/h 6mph Westerly 10km/h 6mph West South Westerly 6km/h 4mph South South Westerly 8km/h 5mph South Westerly 11km/h 7mph South Westerly 13km/h 8mph West South Westerly 14km/h 9mph South Westerly 16km/h 10mph South Westerly 16km/h 10mph South Westerly 19km/h 12mph South Westerly         
Wind Direction NW NW WNW WNW W W W WSW SSW SW SW WSW SW SW SW SW         
Humidity 65% 62% 62% 68% 80% 82% 82% 82% 88% 89% 91% 91% 92% 91% 93% 92%         
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) VG VG E VG VG VG VG VG VG VG VG VG VG VG VG VG         
Pressure (Millibars) 1034 1034 1035 1036 1036 1037 1037 1038 1038 1038 1038 1038 1038 1038 1037 1037         


Forecast Summary

  • Today

    A cold start with one or two lingering showers from overnight. These will quickly clear through the morning leaving everywhere fine. Winds will become lighter, making it feel more pleasant in the sunshine.

  • Tonight

    Staying dry and clear overnight, allowing a widespread frost to develop, mainly southeast. Cloud will gradually spread in from the northwest by dawn. Gentle southwesterly breeze throughout.

Environmental Summary

UV: 1

UK Range: 1-7

Pollution: Low

UK Range: Low to Very High

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Forecast Video

BBC Wales Today

BBC Wales Today Forecast Last updated 06:14, Wednesday 4 Mar Forecast updated Monday to Friday only


UK Forecast Last updated 12:39, Wednesday 4 Mar


Observed at 12:00, Wednesday 4 March

Light Cloud

6°C 43°F

26km/h 16mph West South Westerly

Humidity: 71%

Visibility: Very Good

Pressure: 1032mb, Rising

Observation station: Capel Curig

(Lat: 53.1 | Lon: -3.933)

BBC Weather in association with the Met Office

All times are GMT (Europe/London, GMT+0000) unless otherwise stated

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