Weather Porthmadog

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


22°C 72°F 14°C 57°F Easterly
19km/h 12mph


22°C 72°F 15°C 59°F Easterly
14km/h 9mph

Light Rain

20°C 68°F 15°C 59°F East North Easterly
10km/h 6mph

Light Rain

19°C 66°F 14°C 57°F East South Easterly
11km/h 7mph

Light Cloud

18°C 64°F 13°C 55°F Easterly
13km/h 8mph



Sunrise 06:53 Sunset 19:28

Last updated 05:09

Weather forecast details for Wednesday 17 September. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 1000 hours1300 hours1600 hours1900 hours2200 hours0100 hours
0400 hours 
Weather Conditions Sunny Sunny Sunny Sunny Clear Sky Clear Sky Clear Sky  
Temperature (°C/°F) 18°C 64°F 21°C 70°F 22°C 72°F 19°C 66°F 16°C 61°F 15°C 59°F 15°C 59°F  
Wind Speed (mph/km/h) 21km/h 13mph East North Easterly 19km/h 12mph Easterly 18km/h 11mph Easterly 14km/h 9mph East North Easterly 16km/h 10mph North Easterly 16km/h 10mph North Easterly 16km/h 10mph North Easterly  
Wind Direction ENE E E ENE NE NE NE  
Humidity 69% 56% 54% 68% 78% 86% 89%  
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) G G G G M M M  
Pressure (Millibars) 1013 1013 1012 1012 1012 1012 1011  


Forecast Summary

  • Today

    It will be a dry day, with the best of the sunshine in the west. Sunny spells will develop once any early patchy mist and hill fog clears in the east. Feeling warm in the sunshine with light winds.

  • Tonight

    Staying dry with some extended clear spells in the west allowing patches of mist to form overnight. It will be cloudier in the east with a chance of hill fog.

Environmental Summary

UV: 4

UK Range: 1-7

Pollen: Moderate

UK Range: Low to Very High

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Forecast Video

BBC Wales Today

BBC Wales Today Forecast Last updated 05:59, Wednesday 17 Sep Forecast updated Monday to Friday only


UK Forecast Last updated 23:45, Tuesday 16 Sep


Observed at 06:00, Wednesday 17 September


13°C 55°F

11km/h 7mph East North Easterly

Humidity: 100%

Visibility: Poor

Pressure: 1014mb, Falling

Observation station: Capel Curig

(Lat: 53.1 | Lon: -3.933)

BBC Weather in association with the Met Office

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

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