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CheckWeather UKSnowdonia

Snowdonia weather

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Snowdonia weather warnings

Met Office yellow, amber and red warnings for Wales

Checking the Met Office for warnings in force for Wales…

Snowdonia weather in numbers

from 30 years of measured normals

Snowdonia swings 16°C across the year, from 19°C highs in June to 3°C lows in January, and March is usually the wettest month in a year that brings about 1586 mm of precipitation.

Warmest month
June
19°C average high
Coldest month
January
3°C average low
Wettest month
March
1586 mm a year
Below freezing
Never
overnight lows stay above 0°C
Comfortable
4 months
May, June, July and August

The weather map: all three models at once

Met Office, European, American side by side around Snowdonia and nearby towns.Live rain radar →
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Snowdonia hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Snowdonia 10-day forecast, out to 14 days

where the models agree, and where they split

Snowdonia, Wales is at its warmest in Jun (average highs near 19°C) and coldest in Jan (lows around 3°C), with roughly 1586 mm of precipitation across the year. Below, compare what Met Office, European, American forecast for Snowdonia right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United Kingdom before you trust any single number.

Snowdonia climate by month

average daytime high and overnight low across a typical year
Jan
Feb
Mar
Apr
12°
May
17°
Jun
19°
11°
Jul
18°
12°
Aug
18°
13°
Sep
18°
12°
Oct
14°
Nov
10°
Dec

Which forecast is most accurate in the UK?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
91
/100rank #1
92±0.4°C97±1.0 mph8592% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
Met Office logo
Met Office
84
/100rank #2
89±0.6°C96±1.4 mph6983% hitMet Office (United Kingdom)Exeter, United Kingdom
American logo
American
81
/100rank #3
84±0.9°C93±2.2 mph6983% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1887 cities. Lower error means a higher score. See which forecast model is most accurate in United Kingdom, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United Kingdom? Give each 1 to 5 stars.

Met OfficeUKMO model
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EuropeanECMWF
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AmericanNOAA GFS
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Snowdonia today?
On this page we show what Met Office, European, American each forecast for Snowdonia today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Snowdonia today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from Met Office, European, American for Snowdonia and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Snowdonia?
No single model is always right. Met Office, European, American each run their own physics, so we line all three up: when they agree the Snowdonia forecast is reliable, and when they split you should expect surprises. See our tested UK accuracy scoreboard for how the models compare.
What is the warmest month in Snowdonia?
June is typically the warmest month in Snowdonia, with average highs around 19°C.
How cold does Snowdonia get?
The coldest month in Snowdonia is January, when overnight lows average about 3°C.
How much rain does Snowdonia get?
Snowdonia sees roughly 1586 mm of precipitation a year, with March usually the wettest month.

Nearby

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