West Mersea Temperature by Month

The average annual maximum temperature in West Mersea, United Kingdom is 15°C (59°F), with daytime highs ranging from 9°C (48°F) in January to 22°C (72°F) in August. This page covers monthly averages, day-night differences, and how West Mersea compares to cities worldwide.

The climate in West Mersea is dynamic, ranging widely from chilly in winter to pleasant in summer. Nights are significantly colder, with lows dropping from 15°C (59°F) in August to 4°C (39°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in West Mersea 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 205 hours of sunshine.

The chart below shows the average temperature throughout the year:

West Mersea'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:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

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

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

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.

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