Boscastle Temperature by Month
Boscastle in Cornwall, United Kingdom sees moderate seasonal temperature shifts, with daytime highs between 10°C (50°F) in February and 20°C (68°F) in August, averaging 14°C (57°F) annually. Explore the full monthly breakdown below.
Boscastle Monthly Temperatures
Seasonal changes in Boscastle bring a little variety without extreme temperature swings. Nighttime lows range from 14°C (57°F) in August to 5°C (41°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Boscastle by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. August, the warmest month, averages 202 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Boscastle vs the United Kingdom
The map below shows the annual temperature across the United Kingdom. You can also select individual months if you want to compare a specific time of year.
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Boscastle vs World: Temperature Compared
Boscastle's average annual maximum temperature is 14°C (57°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
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.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Boscastle's weather — including monthly rainfall, sunshine hours, and humidity — visit our Boscastle climate page.
