All Countries
Greencastle, Ireland
Ulster · Ireland
Greencastle is a small town in Ulster, Ireland with a population of 817. Average temperature: 48°F (9°C).
Data updated June 2026
Discover Greencastle, Ireland
Explore over 40 sections covering people, economy, housing, health, crime, climate, community, costs, trends, schools, colleges, hospitals, treatment centers, industries, museums, libraries, breweries, farmers markets, grocery stores, pharmacies, campgrounds, parks, trails, stadiums, ski resorts, daycare centers, nursing homes, churches, fire stations, cell towers, bridges, power plants, EV stations, prisons, radio stations, airports, police stations, post offices, Amtrak stations, superfund sites, UNESCO sites, and more.
Use the tabs and dropdown menus below to navigate every data point we track for this city.
About Greencastle
Greencastle is a commercial fishing port located in the north-east of the Inishowen Peninsula on the north coast of County Donegal in Ulster, Ireland. The port is on the western shores of Lough Foyle. Nowadays, given the decline in the fishing industry, it resembles more closely a 'typical' Donegal holiday village. It is located a few miles from Moville and is about 20 miles from Derry.
People
Climate
| Population | 817 |
| Population Density | 1 / sq mi |
| Coordinates | 55.2000°, -6.9833° |
| Timezone | Europe/Dublin |
| Country | 🇮🇪 Ireland |
| State / Province | Ulster |
| Average Temperature | 48°F (9°C) |
| January Average | 41°F (5°C) |
| July Average | 57°F (14°C) |
| Annual Precipitation | 53.9 inches (1,368 mm) |
| Annual Snowfall | 0.0 inches (0 cm) |
About Greencastle
Greencastle is a small town in Ireland (Ulster) with a population of 817. The average annual temperature is 48°F (9°C). Temperatures range from 41°F in January to 57°F in July. Annual precipitation averages 53.9 inches. The timezone is Europe/Dublin.
Climate in Greencastle
Greencastle has an average annual temperature of 9.9°C (50°F). The hottest month is Aug (14.6°C), the coldest is Jan (6°C). Average annual precipitation is 1138 mm.
Temperature
| Annual Average | 48.2°F |
| 11% below Ireland avg | |
| January Average | 41°F (5°C) |
| July Average | 57°F (14°C) |
| Sunny Days | 238 days/yr |
Geography
| Area | 586.4 sq mi (1,518.7 km²) |
| Population Density | 1/sq mi |
| Coordinates | 55.2000°N, 6.9833°W |
| Timezone | Europe/Dublin |
Precipitation & Snow
Air Quality
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 720 | HEBRIDES (SCOTLAND) | Questionable Earthquake | — | — | 131 km |
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 5.9 in | Coldest, Wettest |
| February | 41°F (5°C) | 4.5 in | |
| March | 43°F (6°C) | 4.5 in | |
| April | 45°F (7°C) | 3.2 in | |
| May | 50°F (10°C) | 2.8 in | Driest |
| June | 54°F (12°C) | 3.2 in | |
| July | 57°F (14°C) | 3.5 in | Warmest |
| August | 57°F (14°C) | 4.3 in | |
| September | 54°F (12°C) | 4.8 in | |
| October | 50°F (10°C) | 5.8 in | |
| November | 45°F (7°C) | 5.8 in | |
| December | 42°F (6°C) | 5.8 in |
Greencastle has a seasonal temperature swing of 16°F / from 41°F in January to 57°F in July. Total annual precipitation is 53.9 inches, with January being the wettest month (5.9") and May the driest (2.8").
Radio Stations near Greencastle
0 stations within ~55 km.
| Station | Genre | Quality |
|---|
Museums in Greencastle
| Name | Type | Address | Phone | Annual Revenue |
|---|---|---|---|---|
| Green Lane Museum | ||||
| Inishowen Maritime Museum and Planetarium | ||||
| Limavady Museum |
Libraries in Greencastle
| Name | Address | Staff | Annual Visits | Circulation | Collection | Programs |
|---|---|---|---|---|---|---|
| Limavady Library | 0.0 | |||||
| Moville Library | 0.0 |
Monuments in Greencastle
1 monuments within city radius — OpenStreetMap data
Castles in Greencastle
2 castles within city radius — OpenStreetMap data
Golf Courses in Greencastle
1 golf courses within city radius — OpenStreetMap data
Breweries in Greencastle
| Name | Type | Address | Phone | Website |
|---|---|---|---|---|
| Northbound Brewery | ||||
| Northbound Brewing | ||||
| O'Connor Craft Beer |
Airports Near Greencastle
21 airports within the area.
| Airport | IATA | Type |
|---|---|---|
| City of Derry Airport | LDY | Medium Airport |
| Islay Airport | ILY | Medium Airport |
| Altamuskin | — | Small Airport |
| Bellarena Airfield | — | Small Airport |
| Blackhill Airstrip | — | Small Airport |
| Carrickmore Airstrip | — | Small Airport |
| Carrigart Airstrip | — | Small Airport |
| Castlerock Airstrip | — | Small Airport |
| Causeway Airfield | — | Small Airport |
| Coalisland Airstrip | — | Small Airport |
| Coulters Airstrip | — | Small Airport |
| Donnydeade Airstrip | — | Small Airport |
| Drumavish Airstrip | — | Small Airport |
| Dungannon Airstrip | — | Small Airport |
| Dunnamanagh Airstrip | — | Small Airport |
| Finn Valley Airfield UL | — | Small Airport |
| Letterkenny Airfield | — | Small Airport |
| Plains Airstrip | — | Small Airport |
| Ruskey Airstrip | — | Small Airport |
| Tarsan Lane Microlights | — | Small Airport |
| Wild Geese Skydive Centre | — | Small Airport |
Post Offices in Greencastle
1 post offices.
| Post Office | Address |
|---|---|
| Greencastle Post Office |
Churches & Religious Organizations in Greencastle
3 religious organizations (IRS tax-exempt data).
| Name | Address |
|---|---|
| St Finian's Church | |
| St Joseph's | |
| St Mary's |
Quick Facts
🇮🇪 About Ireland
Public Holidays in Ireland
11 public holidays this year
Download Full City Report
Get a comprehensive, print-ready PDF with all data for Greencastle.
Get ReportFrequently Asked Questions About Greencastle
What is the population of Greencastle?
Greencastle has a population of 817 residents and is located in Ireland. The population density is 1 people per square mile, spread across 586.4 square miles.
What is the weather like in Greencastle?
Greencastle has a four-season climate with an average annual temperature of 48°F (9°C). Winter temperatures average 41°F in January, while summers reach an average of 57°F in July. The area receives 238 sunny days per year. Annual rainfall totals 53.9 inches.