Port Sunlight Temperature by Month

Port Sunlight in Merseyside, United Kingdom sees significant seasonal temperature differences, with daytime highs between 9°C (48°F) in January and 20°C (68°F) in July, averaging 14°C (57°F) annually. Explore the full monthly breakdown below.

With significant temperature fluctuations, Port Sunlight enjoys distinct seasons year-round. Nighttime lows range from 14°C (57°F) in July to 3°C (37°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Port Sunlight by month:

From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. July, the warmest month, averages 198 hours of sunshine.

The chart below shows the average temperature throughout the year:

Port Sunlight'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.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

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.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.

In Port Sunlight, January is the coolest month, with average highs of 9°C (48°F) and humidity around 85%, considered very high. For a full picture, see our humidity page.

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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Port Sunlight this rarely lasts long on the ground.

For more on Port Sunlight's weather, including monthly rainfall, sunshine hours, and humidity, visit our Port Sunlight climate page.