County Antrim Climate and Average Weather
Climate of County Antrim: average temperatures, rainfall and seasons month by month.
Climate in County Antrim 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 | 43° | 37° | 3,7 in | ★★☆☆☆ |
| February | 46° | 39° | 3,4 in | ★★★☆☆ |
| March | 50° | 40° | 3,3 in | ★★★☆☆ |
| April | 54° | 43° | 3,5 in | ★★★☆☆ |
| May | 60° | 49° | 3,7 in | ★★★★☆ |
| June | 62° | 52° | 5,3 in | ★★★★☆ |
| July | 65° | 55° | 3,0 in | ★★★★☆ |
| August | 65° | 55° | 4,5 in | ★★★★☆ |
| September | 60° | 51° | 3,2 in | ★★★★☆ |
| October | 55° | 49° | 3,9 in | ★★★☆☆ |
| November | 49° | 42° | 3,4 in | ★★★☆☆ |
| December | 47° | 41° | 4,8 in | ★★☆☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Recent extremes in County Antrim
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How County Antrim compares with nearby places
Annual averages, and the difference against County Antrim.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| County Monaghan | 45 mi | 50°F | about the same | 40 in |
| County Louth | 56 mi | 51°F | +33°F warmer | 41 in |
| County Cavan | 68 mi | 50°F | about the same | 42 in |
| County Donegal | 76 mi | 50°F | about the same | 76 in |
| County Meath | 79 mi | 51°F | about the same | 39 in |
Climate by city in County Antrim
1 cities mapped in this atlas
Best time to visit County Antrim
Go in July. 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 County Antrim
Today is slightly cooler than average for October. The forecast high of 50°F is 5.2°F below the 55°F typical for this month.
A 100% chance means rain is expected over most of the area. Plan indoor alternatives. Around 0,4 in is forecast, which is enough to soak trails and slow traffic.
Gusts to 55 mph will push high-sided vehicles on exposed roads and bridges. Wet roads are likely; braking distances roughly double in heavy rain.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 52°F.
What to pack, what to skip
- A warm mid-layer and gloves for early mornings and evenings
- A packable rain shell - 3 of the next 7 days carry a real chance of rain
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 55 mph.
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
Summary
County Antrim is a county in Northern Ireland. County Antrim is a county or metropolitan area in the United Kingdom. It has a population of about 620.000.
Right now it is 48°F (9°C) in County Antrim with light drizzle. It feels like 35°F. Today runs from 44°F to 50°F. Chance of precipitation is 100%. Sightseeing conditions score 4.9/10 - marginal.
The best time to visit County Antrim is July. The climate is temperate. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 65°F, while January is the coldest with lows near 37°F.
The closest major airport is Dublin Airport (DUB), about 90 mi away. Nearby highlights include Lake District National Park, Edinburgh Castle, Old and New Towns of Edinburgh and Snowdonia National Park.
In plain terms. Today is slightly cooler than average for October. The forecast high of 50°F is 5.2°F below the 55°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 County Antrim today at 7.3/10. Gusts to 55 mph will push high-sided vehicles on exposed roads and bridges. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about County Antrim
| Type | County |
|---|---|
| Region | Northern Ireland |
| Country | United Kingdom |
| Continent | Europe |
| Coordinates | 54°43′10.2″N 6°12′25.9″W (54.7195, -6.2072) |
| Population | 620.000 |
| Local time | 11:36 PM (UTC+00:00) |
| Best months | July |
| Climate | Temperate |
Weather map for County Antrim
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 County Antrim
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 County Antrim?
County Antrim is a county in Northern Ireland. Its coordinates are 54.7195, -6.2072. It lies in Europe.
What is the weather like in County Antrim right now?
It is currently 48°F (9°C) with light drizzle. Humidity is 79% and wind is 28 mph.
When is the best time to visit County Antrim?
July offer the most comfortable conditions in County Antrim, which has a temperate climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is County Antrim in?
County Antrim observes Europe/London (UTC+00:00). The local time is 11:36 PM.
How many people live in County Antrim?
County Antrim has a population of approximately 620.000.
What is the nearest airport to County Antrim?
The closest airports are Dublin Airport (DUB), 90 mi away.
What are the top things to do in County Antrim?
Popular options include Lake District National Park, Edinburgh Castle, Old and New Towns of Edinburgh, Snowdonia National Park, Isle of Skye and Loch Ness.
What places are in County Antrim?
County Antrim covers 1 places in this atlas, including Belfast.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (uk-regions) - 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 October 26, 2026 at 11:36 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
