Weather Caernarfon

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

Light Rain

14°C 57°F 11°C 52°F West South Westerly
29km/h 18mph

Sunny Intervals

15°C 59°F 9°C 48°F North Westerly
23km/h 14mph

Sunny Intervals

15°C 59°F 8°C 46°F North Westerly
21km/h 13mph

Light Cloud

16°C 61°F 11°C 52°F Southerly
13km/h 8mph

Light Rain Shower

17°C 63°F 13°C 55°F South Easterly
16km/h 10mph



Sunrise 06:07 Sunset 20:32

Last updated 04:06

Weather forecast details for Thursday 21 August. Each column contains hourly forecast details for weather conditions, temperature, wind speed, wind direction, humidity, visibility and pressure.
Time 0700 hours1000 hours1300 hours1600 hours1900 hours2200 hours0100 hours
0400 hours
Weather Conditions Sunny Intervals Light Cloud Heavy Rain Heavy Rain Light Cloud Light Cloud Partly Cloudy Light Cloud
Temperature (°C/°F) 11°C 52°F 13°C 55°F 13°C 55°F 13°C 55°F 14°C 57°F 13°C 55°F 12°C 54°F 12°C 54°F
Wind Speed (mph/km/h) 18km/h 11mph South Westerly 31km/h 19mph West South Westerly 29km/h 18mph West South Westerly 29km/h 18mph South Westerly 27km/h 17mph West South Westerly 19km/h 12mph Westerly 18km/h 11mph North Westerly 21km/h 13mph North Westerly
Wind Direction SW WSW WSW SW WSW W NW NW
Humidity 81% 72% 86% 91% 84% 86% 86% 87%
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) VG VG G G VG VG VG VG
Pressure (Millibars) 1014 1012 1011 1010 1008 1008 1009 1009


Forecast Summary

  • Today

    A chilly but generally bright start, with the odd shower. It is going to turn cloudier through the day as outbreaks of rain slowly spread their way southwards this afternoon. Temperatures still slightly below average for the time of year.

  • Tonight

    Most of the outbreaks of rain should clear away during the first part of the night leaving it largely dry with clear spells. A little less chilly than recent nights.

Environmental Summary

UV: 3

UK Range: 1-7

Pollution: Low

UK Range: Low to Very High

Pollen: Low

UK Range: Low to Very High

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BBC Wales Today

BBC Wales Today Forecast Last updated 19:06, Wednesday 20 Aug Forecast updated Monday to Friday only


UK Forecast Last updated 23:34, Wednesday 20 Aug


Observed at 05:00, Thursday 21 August

Thick Cloud

11°C 52°F

10km/h 6mph West South Westerly

Humidity: 80%

Visibility: Very Good

Pressure: 1015mb, Falling

Observation station: Mona

(Lat: 53.26 | Lon: -4.376)

BBC Weather in association with the Met Office

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

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