Belfast Climate and Average Weather
Climate of Belfast: average temperatures, rainfall and seasons month by month.
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).
Recent extremes in Belfast
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
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 |
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 this means for Belfast
Today is slightly cooler than average for August. The forecast high of 63°F is 2.9°F below the 65°F typical for this month.
A 25% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 53°F.
What to pack, what to skip
- A packable rain shell - 3 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.
Summary
Belfast is a city in County Antrim. Belfast is known for Titanic Quarter and Giant's Causeway trips. It has a population of about 345.000.
Right now it is 54°F (12°C) in Belfast with overcast. It feels like 51°F. Today runs from 53°F to 63°F. Chance of precipitation is 25%. Sightseeing conditions score 8.6/10 - excellent - go now.
The best time to visit Belfast is May, July and August. The climate is temperate. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 67°F, while January is the coldest with lows near 36°F.
The closest major airport is Dublin Airport (DUB), about 82 mi away. Nearby highlights include Lake District National Park, Snowdonia National Park, Edinburgh Castle and Old and New Towns of Edinburgh.
In plain terms. Today is slightly cooler than average for August. The forecast high of 63°F is 2.9°F below the 65°F typical for this month. The best window to be outside is roughly 6 PM to 9 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Belfast today at 9.5/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Belfast
| Type | City |
|---|---|
| County | County Antrim |
| Country | United Kingdom |
| Continent | Europe |
| Coordinates | 54°35′50.3″N 5°55′48.4″W (54.5973, -5.9301) |
| Population | 345.000 |
| Known for | Titanic Quarter and Giant's Causeway trips |
| Local time | 8:50 PM (UTC+01:00) |
| Best months | May, July and August |
| Climate | Temperate |
Weather map for Belfast
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Belfast
Every topic we hold for this place, and the same topic for the places around it.
Climate 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 54°F (12°C) with overcast. Humidity is 78% and wind is 5 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 8:50 PM.
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 23, 2026 at 8:50 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
