Belfast Weather Forecast
Belfast weather: 56°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Belfast weather in May
Weather map for Belfast
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Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Climate in Belfast month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 44° | 36° | 3,4 in | ★★☆☆☆ |
| February | 47° | 39° | 3,1 in | ★★★☆☆ |
| March | 51° | 39° | 2,9 in | ★★★☆☆ |
| April | 54° | 42° | 3,5 in | ★★★☆☆ |
| May | 61° | 48° | 2,6 in | ★★★★☆ |
| June | 63° | 51° | 4,2 in | ★★★★☆ |
| July | 67° | 55° | 2,8 in | ★★★★☆ |
| August | 65° | 54° | 3,2 in | ★★★★☆ |
| September | 61° | 50° | 4,3 in | ★★★★☆ |
| October | 56° | 48° | 4,2 in | ★★★☆☆ |
| November | 50° | 41° | 3,3 in | ★★★☆☆ |
| December | 48° | 41° | 4,6 in | ★★☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Best time to visit Belfast
Go in May, July and August. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
What to pack, what to skip
- A packable rain shell - 4 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
How Belfast compares with nearby places
Annual averages, and the difference against Belfast.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| County Monaghan | 48 mi | 50°F | about the same | 41 in |
| County Louth | 52 mi | 51°F | +33°F warmer | 42 in |
| County Cavan | 71 mi | 50°F | about the same | 43 in |
| County Meath | 75 mi | 51°F | about the same | 39 in |
| Dublin Airport | 82 mi | 52°F | +33°F warmer | 39 in |
See the Belfast forecast by time range
Belfast weather - more answers
Explore Belfast
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Belfast?
Belfast is a city in County Antrim. Its coordinates are 54.5973, -5.9301. It lies in Europe.
What is the weather like in Belfast right now?
It is currently 56°F (13°C) with overcast. Humidity is 72% and wind is 7 mph.
When is the best time to visit Belfast?
May, July and August offer the most comfortable conditions in Belfast, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Belfast in?
Belfast observes Europe/London (UTC+01:00). The local time is 9:28 AM.
How many people live in Belfast?
Belfast has a population of approximately 345.000.
What is the nearest airport to Belfast?
The closest airports are Dublin Airport (DUB), 82 mi away.
What are the top things to do in Belfast?
Popular options include Lake District National Park, Snowdonia National Park, Edinburgh Castle, Old and New Towns of Edinburgh, Isle of Skye and Loch Ness.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-supported) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 21, 2026 at 9:28 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
