Helston Temperature by Month
Helston 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.
Helston Monthly Temperatures
The moderate changes in the climate in Helston ensure gradual weather shifts through each season. At night, temperatures drop to between 15°C (59°F) and 6°C (43°F) depending on the time of year.
The chart below illustrates the average maximum day and minimum night temperatures in Helston by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. August, the city's warmest month, sees 202 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Helston 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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Helston vs World: Temperature Compared
Helston'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.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
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 Helston's weather — including monthly rainfall, sunshine hours, and humidity — visit our Helston climate page.
