St. Agnes Temperature by Month

St. Agnes in Cornwall, United Kingdom sees moderate seasonal temperature shifts, with daytime highs between 11°C (52°F) in February and 20°C (68°F) in August, averaging 15°C (59°F) annually. Explore the full monthly breakdown below.

In St. Agnes, seasonal changes bring about a moderate variation in temperatures. Nighttime lows range from 14°C (57°F) in August to 6°C (43°F) in February.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 202 hours of sunshine.

The chart below shows the average temperature throughout the year:

St. Agnes's average annual maximum temperature is 15°C (59°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters, and seasons reversed compared to Europe.

Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.

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 St. Agnes's weather, including monthly rainfall, sunshine hours, and humidity, visit our St. Agnes climate page.