Belfast weather
Loading live data…Cloudy,much the same tomorrow
Met Office, the European and the American model agree on a high near 16° in Belfast today. Tomorrow looks cloudy around 16°, with a 5% chance of rain.
CheckWeather.io on iPhoneFree. No ads, no account.Belfast weather warnings
Met Office yellow, amber and red warnings for Northern IrelandChecking the Met Office for warnings in force for Northern Ireland…
Belfast weather in numbers
measured normals and 10 years of recorded weatherBelfast swings 15°C across the year, from 18°C highs in June to 3°C lows in January, and July is usually the wettest month in a year that brings about 1125 mm of precipitation. Over 10 years of recorded weather it averages 1 day a year at 25°C or above, 16 frost nights, and rain on 176 days.
Day counts are from the ERA5 reanalysis for Belfast’s grid square, 2016 to 2025, counted the same way for every city so the numbers compare. A reanalysis square is an area, not a weather station, so it is good for counting days and not for a single day’s record.
The weather map: all three models at once
Met Office, European, American side by side around Belfast and nearby towns.Live rain radar →Belfast hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
Belfast 10-day forecast, out to 14 days
where the models agree, and where they splitBelfast, Northern Ireland. Below we compare what Met Office, European, American forecast for Belfast right now and flag exactly where they disagree, then break down Belfast's weather month by month and which forecast model has been most accurate here.
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.
Belfast weather by month
what to expect in Belfast through the yearHere is Belfast's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Belfast by season.
What Belfast's weather is like through the year
Belfast runs from warm summers, with June highs near 18°C, to cool winters, when January lows sit around 3°C (a swing of about 15°C across the year). July is usually the wettest month, and Belfast sees roughly 1125 mm of precipitation annually.
Best time to visit Belfast
The most comfortable time to visit Belfast is usually May, June, August and September, when daytime highs sit in the pleasant 16-26°C range and the heaviest July rain is behind you.
Which forecast is most accurate in Belfast?
CheckWeather Score, graded against the weather that actually happened
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.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Belfast, scoring 93/100 on our CheckWeather Score, ahead of the Met Office at 86. See the full UK accuracy scoreboard for exactly how every model is tested.
What do you think of the forecasts?
your vote countsThe 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.
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.
Where the models disagree
temperature and rain, judged separatelyThe models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.