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Now · 9:34 AM

Llanberis Weather & Hourly Forecast

United Kingdom · Wales · LL55 4BF

Overcast
11°C
Overcast
Feels like: 10°C
💧 Humidity 86% 🌡 Pressure 1020 hPa 💨 Wind 5 km/h 👁 Visibility 39.7 km ☁ Clouds 100% ☀️ UV index 0.4 · Low 🌅 Sunrise 7:06 AM 🌇 Sunset 7:10 PM

Hourly Forecast for Llanberis

Today
Overcast · 10:00 AM Overcast
11° 💧 0.0 mm 💨 5 km/h H 86%1020 hPa
Overcast · 1:00 PM Overcast
12° 💧 0.3 mm 💨 5 km/h H 79%1020 hPa
Light rain · 4:00 PM Light rain
11° 💧 0.2 mm 💨 11 km/h H 90%1020 hPa
Overcast · 7:00 PM Overcast
11° 💧 None 💨 11 km/h H 95%1020 hPa
Partly cloudy night · 10:00 PM Partly cloudy night
10° 💧 0.0 mm 💨 11 km/h H 97%1021 hPa
Tomorrow
Mostly clear night · 1:00 AM Mostly clear night
10° 💧 0.0 mm 💨 11 km/h H 98%1020 hPa
Clear night · 4:00 AM Clear night
10° 💧 None 💨 13 km/h H 98%1020 hPa
Mostly clear night · 7:00 AM Mostly clear night
10° 💧 0.6 mm 💨 14 km/h H 96%1021 hPa
Mostly cloudy · 10:00 AM Mostly cloudy
13° 💧 0.2 mm 💨 18 km/h H 94%1021 hPa
Light rain · 1:00 PM Light rain
15° 💧 0.7 mm 💨 22 km/h H 83%1021 hPa
Light rain · 4:00 PM Light rain
14° 💧 0.7 mm 💨 22 km/h H 88%1021 hPa
Mostly sunny · 7:00 PM Mostly sunny
12° 💧 0.1 mm 💨 17 km/h H 95%1020 hPa
Partly cloudy night · 10:00 PM Partly cloudy night
11° 💧 0.1 mm 💨 14 km/h H 95%1020 hPa
Sunday
Overcast night · 1:00 AM Overcast night
10° 💧 0.0 mm 💨 14 km/h H 96%1018 hPa
Overcast night · 4:00 AM Overcast night
10° 💧 None 💨 13 km/h H 96%1015 hPa
Overcast night · 7:00 AM Overcast night
10° 💧 3.1 mm 💨 19 km/h H 82%1012 hPa

In Llanberis and, more broadly, across Gwynedd: The rest of the day is expected to be mostly cloudy, with temperatures remaining mild, ranging from 16 to 18 degrees Celsius. Light southwest winds are forecast, reaching up to 8 mph with occasional gusts of 14 mph. No significant rainfall is anticipated, so the weather should remain dry throughout the afternoon. Conditions will be relatively calm, making it a fairly mild and overcast day overall.

15-Day Weather Outlook for Llanberis

TomorrowTomorrow Mostly sunny Mostly sunny 15°/10° 💧 None 💨 23 km/h
Sunday, Sep 27Sun Sep 27 Mostly cloudy Mostly cloudy 14°/9° 💧 None 💨 32 km/h
Monday, Sep 28Mon Sep 28 Mostly cloudy Mostly cloudy 9°/8° 💧 None 💨 7 km/h

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Llanberis

Vertical axis: °C · Color based on temperature
Overcast at 10:00 AM
11° Today 10:00 AM
Overcast at 11:00 AM
11° 11:00 AM
Overcast at 12:00 PM
12° 12:00 PM
Overcast at 1:00 PM
12° 1:00 PM
Overcast at 2:00 PM
12° Today 2:00 PM
Light rain at 3:00 PM
12° 3:00 PM
Light rain at 4:00 PM
11° 4:00 PM
Overcast at 5:00 PM
11° 5:00 PM
Overcast at 6:00 PM
11° Today 6:00 PM
Overcast at 7:00 PM
11° 7:00 PM
Overcast night at 8:00 PM
10° 8:00 PM
Partly cloudy night at 9:00 PM
10° 9:00 PM
Partly cloudy night at 10:00 PM
10° Today 10:00 PM
Partly cloudy night at 11:00 PM
10° 11:00 PM
Mostly clear night at 12:00 AM
10° 12:00 AM
Mostly clear night at 1:00 AM
10° 1:00 AM
Mostly clear night at 2:00 AM
10° Tomorrow 2:00 AM
Clear night at 3:00 AM
10° 3:00 AM
Clear night at 4:00 AM
10° 4:00 AM
Clear night at 5:00 AM
10° 5:00 AM
Mostly clear night at 6:00 AM
10° Tomorrow 6:00 AM
Mostly clear night at 7:00 AM
10° 7:00 AM
Light rain at 8:00 AM
10° 8:00 AM
Light rain at 9:00 AM
12° 9:00 AM
Mostly cloudy at 10:00 AM
13° Tomorrow 10:00 AM
Mostly cloudy at 11:00 AM
14° 11:00 AM
Mostly cloudy at 12:00 PM
14° 12:00 PM
Light rain at 1:00 PM
15° 1:00 PM
Light rain at 2:00 PM
15° Tomorrow 2:00 PM
Light rain at 3:00 PM
14° 3:00 PM
Light rain at 4:00 PM
14° 4:00 PM
Light rain at 5:00 PM
13° 5:00 PM
Light rain at 6:00 PM
13° Tomorrow 6:00 PM
Mostly sunny at 7:00 PM
12° 7:00 PM
Partly cloudy night at 8:00 PM
12° 8:00 PM
Partly cloudy night at 9:00 PM
11° 9:00 PM
Partly cloudy night at 10:00 PM
11° Tomorrow 10:00 PM
Partly cloudy night at 11:00 PM
11° 11:00 PM
Mostly cloudy night at 12:00 AM
11° 12:00 AM
Overcast night at 1:00 AM
10° 1:00 AM
Overcast night at 2:00 AM
11° Sunday 2:00 AM
Overcast night at 3:00 AM
10° 3:00 AM
Overcast night at 4:00 AM
10° 4:00 AM
Overcast night at 5:00 AM
10° 5:00 AM
Overcast night at 6:00 AM
10° Sunday 6:00 AM
Overcast night at 7:00 AM
10° 7:00 AM
Overcast at 8:00 AM
10° 8:00 AM
Moderate rain at 9:00 AM
10° 9:00 AM
Light rain at 10:00 AM
12° Sunday 10:00 AM
Light rain at 11:00 AM
13° 11:00 AM
Light rain at 12:00 PM
13° 12:00 PM
Light rain at 1:00 PM
14° 1:00 PM
Light rain at 2:00 PM
14° Sunday 2:00 PM
Light rain at 3:00 PM
14° 3:00 PM
Light rain at 4:00 PM
14° 4:00 PM
Light rain at 5:00 PM
14° 5:00 PM
Light rain at 6:00 PM
13° Sunday 6:00 PM
Light rain at 7:00 PM
12° 7:00 PM
Partly cloudy night at 8:00 PM
11° 8:00 PM
Partly cloudy night at 9:00 PM
10° 9:00 PM
Mostly cloudy night at 10:00 PM
9° Sunday 10:00 PM
Mostly cloudy night at 11:00 PM
9° 11:00 PM
Mostly cloudy night at 12:00 AM
9° 12:00 AM
Mostly cloudy night at 1:00 AM
8° 1:00 AM

AIR QUALITY FORECAST

Air Quality Forecast for Llanberis

Hourly forecast · Updated every 2 hours
Fair
Nearest forecast value 10:00 AM
PM2.5 Fine particles Good 1,9µg/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 2,7µg/m³

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

O₃ Ozone Fair 81,7µg/m³

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

NO₂ Nitrogen dioxide Good 1,7µg/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 Llanberis

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 1,1Low 🙂Fair
Tomorrow UV 2,7Low 🙂Fair
Sunday UV 1,5Low 🙂Fair
Hourly UV index today
10:00 AMUV 0,4 11:00 AMUV 0,4 12:00 PMUV 1,1 1:00 PMUV 0,8 2:00 PMUV 0,9 3:00 PMUV 0,5 4:00 PMUV 0,4 5:00 PMUV 0,4 6:00 PMUV 0,3 7:00 PMUV 0,1
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 Llanberis

Vertical axis: km/h · Horizontal axis: hours
Hourly wind speed Chart of sustained wind and maximum gusts in km/h. Today 10:00 AM 11:00 AM 12:00 PM 1:00 PM Today 2:00 PM 3:00 PM 4:00 PM 5:00 PM Today 6:00 PM 7:00 PM 8:00 PM 9:00 PM Today 10:00 PM 11:00 PM 12:00 AM 1:00 AM Tomorrow 2:00 AM 3:00 AM 4:00 AM 5:00 AM Tomorrow 6:00 AM 7:00 AM 8:00 AM 9:00 AM Tomorrow 10:00 AM 11:00 AM 12:00 PM 1:00 PM Tomorrow 2:00 PM 3:00 PM 4:00 PM 5:00 PM Tomorrow 6:00 PM 7:00 PM 8:00 PM 9:00 PM Tomorrow 10:00 PM 11:00 PM 12:00 AM 1:00 AM Sunday 2:00 AM 3:00 AM 4:00 AM 5:00 AM Sunday 6:00 AM 7:00 AM 8:00 AM 9:00 AM Sunday 10:00 AM 11:00 AM 12:00 PM 1:00 PM Sunday 2:00 PM 3:00 PM 4:00 PM 5:00 PM Sunday 6:00 PM 7:00 PM 8:00 PM 9:00 PM Sunday 10:00 PM 11:00 PM 12:00 AM 1:00 AM
Sustained wind Max gusts
NIGHT SKY · LLANBERIS, WALES

Tonight's Stargazing & Shooting Stars

Excellent observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

83/100Best-hour score
BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:06 PM–5:12 AM
☁ Cloud cover 10% Real hourly forecast for the best viewing hour.
☾ Moonlight 100% Full Moon · Moon about 14° above the horizon at the best viewing hour.
☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 51° high at the best hour.
✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.
Chance ≥1 meteor in 30 min35%
UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.
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
NOV 6–NOV 30
LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% 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.

Forecast data for Llanberis were last refreshed today at 9:34 AM. The current forecast period extends through 27/09/2026 at 7:00 AM. 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.