Colwyn Bay Temperature by Month
The average annual maximum temperature in Colwyn Bay, Gwynedd, United Kingdom is 14°C (57°F), with daytime highs ranging from 9°C (48°F) in February to 20°C (68°F) in July. This page covers monthly averages, day-night differences, and how Colwyn Bay compares to cities worldwide.
Colwyn Bay Monthly Temperatures
In Colwyn Bay, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 13°C (55°F) in July to 3°C (37°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Colwyn Bay by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. July, the city's warmest month, averages 155 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Colwyn Bay 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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Colwyn Bay vs World: Temperature Compared
Colwyn Bay'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:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
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.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Colwyn Bay's weather — including monthly rainfall, sunshine hours, and humidity — visit our Colwyn Bay climate page.
