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Current weather in Trefriw is overcast clouds.

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Weather data for Trefriw is updated regularly with the latest available observations and forecasts.

Now · 12:05 AM

Trefriw Weather & Hourly Forecast

United Kingdom · Wales · LL27 0HZ

9°C

Overcast night

Feels like: 7°C

💧 Humidity 82% 🌡 Pressure 1032 hPa 💨 Wind 6 km/h 👁 Visibility 42.6 km ☁ Clouds 98% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Trefriw

Today

1:00 AM

Mostly clear night

10° 💧 None 💨 6 km/h H 79%1032 hPa

4:00 AM

Partly cloudy night

9° 💧 None 💨 10 km/h H 83%1031 hPa

7:00 AM

Overcast

11° 💧 None 💨 10 km/h H 75%1031 hPa

10:00 AM

Mostly cloudy

14° 💧 0.0 mm 💨 14 km/h H 85%1032 hPa

1:00 PM

Overcast

16° 💧 0.1 mm 💨 12 km/h H 89%1032 hPa

4:00 PM

Overcast

17° 💧 0.0 mm 💨 11 km/h H 83%1031 hPa

7:00 PM

Partly cloudy

15° 💧 None 💨 8 km/h H 91%1031 hPa

10:00 PM

Fog at night

13° 💧 0.0 mm 💨 7 km/h H 99%1031 hPa

Tomorrow

1:00 AM

Fog at night

13° 💧 0.0 mm 💨 9 km/h H 98%1031 hPa

4:00 AM

Fog at night

13° 💧 0.0 mm 💨 9 km/h H 99%1030 hPa

7:00 AM

Fog

13° 💧 0.0 mm 💨 9 km/h H 99%1030 hPa

10:00 AM

Fog

14° 💧 0.1 mm 💨 11 km/h H 96%1030 hPa

1:00 PM

Overcast

16° 💧 0.1 mm 💨 8 km/h H 85%1030 hPa

4:00 PM

Overcast

16° 💧 0.0 mm 💨 8 km/h H 85%1029 hPa

7:00 PM

Overcast

15° 💧 None 💨 5 km/h H 89%1028 hPa

10:00 PM

Mist at night

11° 💧 None 💨 5 km/h H 99%1027 hPa

Today

1:00 AM

Mostly clear night

10° 💧 None 💨 6 km/h H 79%1032 hPa

2:00 AM

Partly cloudy night

9° 💧 None 💨 7 km/h H 84%1032 hPa

3:00 AM

Partly cloudy night

9° 💧 None 💨 9 km/h H 84%1032 hPa

4:00 AM

Partly cloudy night

9° 💧 None 💨 10 km/h H 83%1031 hPa

5:00 AM

Mostly cloudy night

9° 💧 None 💨 9 km/h H 84%1031 hPa

6:00 AM

Overcast night

9° 💧 None 💨 9 km/h H 82%1031 hPa

7:00 AM

Overcast

11° 💧 None 💨 10 km/h H 75%1031 hPa

8:00 AM

Mostly cloudy

12° 💧 None 💨 12 km/h H 76%1032 hPa

9:00 AM

Mostly cloudy

13° 💧 None 💨 14 km/h H 81%1032 hPa

10:00 AM

Mostly cloudy

14° 💧 None 💨 14 km/h H 85%1032 hPa

11:00 AM

Overcast

15° 💧 0.0 mm 💨 13 km/h H 87%1032 hPa

12:00 PM

Overcast

15° 💧 None 💨 12 km/h H 89%1032 hPa

1:00 PM

Overcast

16° 💧 0.0 mm 💨 12 km/h H 89%1032 hPa

2:00 PM

Overcast

16° 💧 0.0 mm 💨 12 km/h H 88%1031 hPa

3:00 PM

Overcast

17° 💧 0.1 mm 💨 12 km/h H 87%1031 hPa

4:00 PM

Overcast

17° 💧 0.0 mm 💨 11 km/h H 83%1031 hPa

5:00 PM

Mostly cloudy

17° 💧 0.0 mm 💨 10 km/h H 84%1031 hPa

6:00 PM

Mostly cloudy

17° 💧 None 💨 9 km/h H 86%1031 hPa

7:00 PM

Partly cloudy

15° 💧 None 💨 8 km/h H 91%1031 hPa

8:00 PM

Mist at night

14° 💧 None 💨 6 km/h H 97%1031 hPa

9:00 PM

Fog at night

13° 💧 None 💨 6 km/h H 99%1031 hPa

10:00 PM

Fog at night

13° 💧 None 💨 7 km/h H 99%1031 hPa

11:00 PM

Fog at night

13° 💧 0.0 mm 💨 8 km/h H 99%1031 hPa

Tomorrow

12:00 AM

Fog at night

13° 💧 None 💨 8 km/h H 99%1031 hPa

1:00 AM

Fog at night

13° 💧 0.0 mm 💨 9 km/h H 98%1031 hPa

2:00 AM

Fog at night

13° 💧 None 💨 9 km/h H 98%1031 hPa

3:00 AM

Fog at night

13° 💧 0.0 mm 💨 9 km/h H 99%1030 hPa

4:00 AM

Fog at night

13° 💧 0.0 mm 💨 9 km/h H 99%1030 hPa

5:00 AM

Fog at night

13° 💧 0.0 mm 💨 8 km/h H 98%1030 hPa

6:00 AM

Fog at night

13° 💧 None 💨 9 km/h H 99%1030 hPa

7:00 AM

Fog

13° 💧 0.0 mm 💨 9 km/h H 99%1030 hPa

8:00 AM

Fog

13° 💧 None 💨 10 km/h H 99%1030 hPa

9:00 AM

Fog

14° 💧 0.0 mm 💨 11 km/h H 97%1030 hPa

10:00 AM

Fog

14° 💧 0.0 mm 💨 11 km/h H 96%1030 hPa

11:00 AM

Mist

15° 💧 0.0 mm 💨 10 km/h H 91%1030 hPa

12:00 PM

Overcast

16° 💧 0.0 mm 💨 9 km/h H 88%1030 hPa

1:00 PM

Overcast

16° 💧 0.0 mm 💨 8 km/h H 85%1030 hPa

2:00 PM

Overcast

16° 💧 0.0 mm 💨 8 km/h H 85%1029 hPa

3:00 PM

Overcast

17° 💧 0.0 mm 💨 9 km/h H 84%1029 hPa

4:00 PM

Overcast

16° 💧 0.0 mm 💨 8 km/h H 85%1029 hPa

5:00 PM

Overcast

16° 💧 None 💨 8 km/h H 84%1028 hPa

6:00 PM

Overcast

16° 💧 0.0 mm 💨 7 km/h H 85%1028 hPa

7:00 PM

Overcast

15° 💧 None 💨 5 km/h H 89%1028 hPa

8:00 PM

Mostly cloudy night

13° 💧 None 💨 4 km/h H 96%1028 hPa

9:00 PM

Mostly cloudy night

12° 💧 None 💨 4 km/h H 98%1027 hPa

10:00 PM

Mist at night

11° 💧 None 💨 5 km/h H 99%1027 hPa

11:00 PM

Overcast night

13° 💧 None 💨 6 km/h H 95%1027 hPa

Wednesday

12:00 AM

Mostly cloudy night

13° 💧 None 💨 5 km/h H 92%1027 hPa

1:00 AM

Partly cloudy night

13° 💧 None 💨 5 km/h H 95%1026 hPa

2:00 AM

Overcast night

12° 💧 None 💨 6 km/h H 97%1026 hPa

3:00 AM

Overcast night

13° 💧 0.0 mm 💨 7 km/h H 97%1025 hPa

4:00 AM

Mist at night

13° 💧 0.0 mm 💨 8 km/h H 97%1025 hPa

5:00 AM

Mist at night

13° 💧 0.0 mm 💨 9 km/h H 97%1024 hPa

6:00 AM

Light rain

13° 💧 0.1 mm 💨 9 km/h H 98%1024 hPa

7:00 AM

Light rain

13° 💧 0.3 mm 💨 8 km/h H 98%1024 hPa

8:00 AM

Light rain

13° 💧 0.2 mm 💨 10 km/h H 98%1024 hPa

9:00 AM

Fog

13° 💧 0.1 mm 💨 12 km/h H 97%1024 hPa

10:00 AM

Light rain

14° 💧 0.2 mm 💨 13 km/h H 95%1024 hPa

11:00 AM

Light rain

14° 💧 0.2 mm 💨 11 km/h H 96%1024 hPa

12:00 PM

Light rain

14° 💧 0.3 mm 💨 9 km/h H 95%1023 hPa

1:00 PM

Light rain

14° 💧 0.3 mm 💨 12 km/h H 90%1024 hPa

4:00 PM

Sunny

13° 💧 None 💨 17 km/h H 76%1025 hPa

7:00 PM

Mostly sunny

13° 💧 None 💨 16 km/h H 79%1025 hPa

10:00 PM

Clear night

12° 💧 None 💨 15 km/h H 80%1027 hPa

Thursday

1:00 AM

Partly cloudy night

11° 💧 None 💨 6 km/h H 86%1027 hPa

4:00 AM

Mostly cloudy night

10° 💧 None 💨 3 km/h H 86%1027 hPa

7:00 AM

Mostly cloudy night

7° 💧 None 💨 6 km/h H 95%1026 hPa

10:00 AM

Overcast

11° 💧 None 💨 10 km/h H 95%1026 hPa

1:00 PM

Overcast

14° 💧 None 💨 14 km/h H 74%1024 hPa

4:00 PM

Overcast

16° 💧 None 💨 13 km/h H 64%1021 hPa

7:00 PM

Mostly cloudy

14° 💧 None 💨 12 km/h H 62%1019 hPa

10:00 PM

Mostly cloudy night

13° 💧 None 💨 16 km/h H 79%1018 hPa

Friday

1:00 AM

Overcast night

15° 💧 None 💨 16 km/h H 82%1016 hPa

4:00 AM

Light rain

15° 💧 None 💨 26 km/h H 86%1015 hPa

7:00 AM

Light rain

14° 💧 None 💨 17 km/h H 94%1016 hPa

10:00 AM

Overcast

14° 💧 None 💨 11 km/h H 89%1018 hPa

1:00 PM

Overcast

15° 💧 None 💨 13 km/h H 72%1019 hPa

4:00 PM

Overcast

15° 💧 None 💨 16 km/h H 67%1019 hPa

7:00 PM

Mostly cloudy

13° 💧 None 💨 9 km/h H 78%1020 hPa

10:00 PM

Overcast night

12° 💧 None 💨 10 km/h H 85%1020 hPa

Saturday

1:00 AM

Overcast night

12° 💧 None 💨 9 km/h H 87%1020 hPa

4:00 AM

Overcast night

12° 💧 None 💨 9 km/h H 90%1019 hPa

7:00 AM

Mostly clear night

11° 💧 None 💨 11 km/h H 90%1019 hPa

10:00 AM

Mostly cloudy

14° 💧 None 💨 12 km/h H 83%1018 hPa

1:00 PM

Overcast

15° 💧 None 💨 12 km/h H 76%1017 hPa

7:00 PM

Light rain

13° 💧 None 💨 7 km/h H 89%1013 hPa

Sunday

1:00 AM

Light rain

15° 💧 None 💨 26 km/h H 89%1009 hPa

7:00 AM

Mostly clear night

14° 💧 None 💨 6 km/h H 94%1009 hPa

1:00 PM

Overcast

16° 💧 None 💨 18 km/h H 80%1013 hPa

7:00 PM

Mostly cloudy

13° 💧 None 💨 8 km/h H 79%1015 hPa

Monday

1:00 AM

Overcast night

11° 💧 None 💨 8 km/h H 87%1017 hPa

7:00 AM

Mostly cloudy night

9° 💧 None 💨 4 km/h H 89%1019 hPa

1:00 PM

Mostly sunny

14° 💧 None 💨 14 km/h H 63%1021 hPa

7:00 PM

Mostly sunny

11° 💧 None 💨 5 km/h H 79%1023 hPa

Tuesday

1:00 AM

Mostly cloudy night

9° 💧 None 💨 10 km/h H 88%1024 hPa

7:00 AM

Overcast night

9° 💧 None 💨 17 km/h H 76%1021 hPa

1:00 PM

Overcast

16° 💧 None 💨 28 km/h H 74%1017 hPa

7:00 PM

Overcast night

19° 💧 None 💨 25 km/h H 74%1013 hPa

Wednesday

1:00 AM

Overcast night

18° 💧 None 💨 25 km/h H 80%1013 hPa

7:00 AM

Overcast night

17° 💧 None 💨 22 km/h H 88%1013 hPa

1:00 PM

Overcast

21° 💧 None 💨 22 km/h H 67%1014 hPa

7:00 PM

Mostly cloudy night

18° 💧 None 💨 13 km/h H 78%1015 hPa

Thursday

1:00 AM

Overcast night

16° 💧 None 💨 13 km/h H 88%1017 hPa

7:00 AM

Light rain

15° 💧 None 💨 4 km/h H 100%1019 hPa

1:00 PM

Overcast

17° 💧 None 💨 1 km/h H 98%1019 hPa

7:00 PM

Overcast night

15° 💧 None 💨 1 km/h H 98%1017 hPa

Friday

1:00 AM

Overcast night

16° 💧 None 💨 8 km/h H 94%1015 hPa

7:00 AM

Light rain

15° 💧 None 💨 0 km/h H 90%1016 hPa

1:00 PM

Overcast

17° 💧 None 💨 4 km/h H 96%1017 hPa

7:00 PM

Overcast night

17° 💧 None 💨 9 km/h H 93%1015 hPa

Saturday

1:00 AM

Mostly cloudy night

15° 💧 None 💨 13 km/h H 94%1015 hPa

7:00 AM

Mostly clear night

13° 💧 None 💨 18 km/h H 94%1014 hPa

1:00 PM

Partly cloudy

19° 💧 None 💨 20 km/h H 76%1013 hPa

7:00 PM

Partly cloudy night

18° 💧 None 💨 20 km/h H 73%1012 hPa

Sunday

1:00 AM

Mostly cloudy night

14° 💧 None 💨 22 km/h H 66%1014 hPa

7:00 AM

Clear night

12° 💧 None 💨 17 km/h H 86%1015 hPa

1:00 PM

Sunny

17° 💧 None 💨 19 km/h H 73%1018 hPa

7:00 PM

Clear night

15° 💧 None 💨 8 km/h H 81%1020 hPa

Monday

1:00 AM

Clear night

12° 💧 None 💨 13 km/h H 86%1023 hPa

7:00 AM

Partly cloudy night

10° 💧 None 💨 15 km/h H 94%1024 hPa

1:00 PM

Partly cloudy

16° 💧 None 💨 24 km/h H 69%1024 hPa

In Trefriw and, more broadly, across Conwy: This evening, expect mostly cloudy skies with mild temperatures ranging from 13 to 18 degrees Celsius. Winds will be moderate, coming from the south at around 10 mph, with gusts reaching up to 15 mph. No rain is anticipated during the evening hours, so conditions should remain dry. Temperatures are likely to stay steady through the night, gradually cooling as the evening progresses. It should remain relatively calm with no significant weather disturbances. Be prepared for the gentle breeze if you're heading outdoors later. The weather is generally settled for the next few hours, making for a fairly tranquil evening.

15-Day Weather Outlook for Trefriw

TomorrowTomorrow

Overcast 17°/11° 💧 None 💨 11 km/h

Wednesday, Sep 23Wed Sep 23

Light rain 14°/12° 💧 5.5 mm 💨 17 km/h

Thursday, Sep 24Thu Sep 24

Partly cloudy 16°/7° 💧 None 💨 16 km/h

Friday, Sep 25Fri Sep 25

Light rain 15°/12° 💧 1.4 mm 💨 26 km/h

Saturday, Sep 26Sat Sep 26

Light rain 15°/11° 💧 1.1 mm 💨 12 km/h

Sunday, Sep 27Sun Sep 27

Light rain 16°/13° 💧 5.7 mm 💨 26 km/h

Monday, Sep 28Mon Sep 28

Mostly sunny 14°/9° 💧 0.4 mm 💨 14 km/h

Tuesday, Sep 29Tue Sep 29

Mostly cloudy 19°/9° 💧 None 💨 28 km/h

Wednesday, Sep 30Wed Sep 30

Overcast 21°/17° 💧 1.1 mm 💨 25 km/h

Thursday, Oct 1Thu Oct 1

Light rain 17°/15° 💧 6.5 mm 💨 13 km/h

Friday, Oct 2Fri Oct 2

Light rain 17°/15° 💧 8.0 mm 💨 9 km/h

Saturday, Oct 3Sat Oct 3

Mostly cloudy 19°/13° 💧 None 💨 20 km/h

Sunday, Oct 4Sun Oct 4

Mostly cloudy 17°/12° 💧 0.1 mm 💨 22 km/h

Monday, Oct 5Mon Oct 5

Partly cloudy 16°/10° 💧 None 💨 24 km/h

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Trefriw

Vertical axis: °C · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Trefriw

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 1:00 AM

PM2.5 Fine particles Good 1,7µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 4,9µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 78,6µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 2,9µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Trefriw

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 2,9Low 🙂Fair

Tomorrow UV 2,9Low 🙂Fair

Wednesday UV 1,5Low 🙂Fair

Thursday UV 3,1Moderate 🙂Fair

Friday UV 5,0Moderate —Unavailable

Saturday UV 5,0Moderate —Unavailable

Sunday UV 4,0Moderate —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,0 9:00 AMUV 0,2 10:00 AMUV 0,3 11:00 AMUV 0,7 12:00 PMUV 1,7 1:00 PMUV 2,9 2:00 PMUV 2,8 3:00 PMUV 2,4 4:00 PMUV 1,6 5:00 PMUV 0,8 6:00 PMUV 0,3

Today's weather health advice Open today's recommendations.

Low UV risk

UV radiation will be low, although basic protection is still advisable during prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Trefriw

Vertical axis: km/h · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · TREFRIW, WALES

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 1:00 AM–2:00 AM.

83/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 9:18 PM–5:00 AM

☁ Cloud cover 23% Real hourly forecast for the best viewing hour.

☾ Moonlight 68% First Quarter · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 53° high at the best hour.

✦ Estimated visible meteors 1–3/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min67%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Trefriw were last refreshed today at 12:00 AM. The current forecast period extends through 22/09/2026 at 10:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.