Greencastle Temperature by Month

Greencastle, Tyrone County, United Kingdom has an average annual maximum temperature of 13°C (55°F), with moderate seasonal shifts ranging from 8°C (46°F) in January to 19°C (66°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

The moderate changes in the climate in Greencastle ensure gradual weather shifts through each season. At night, temperatures drop to between 11°C (52°F) and 3°C (37°F) depending on the time of year.

The chart below illustrates the average maximum day and minimum night temperatures in Greencastle by month:

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 141 hours of sunshine.

The chart below shows the average temperature throughout the year:

Greencastle's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

For more on Greencastle's weather, including monthly rainfall, sunshine hours, and humidity, visit our Greencastle climate page.