Saint Helens Temperature by Month

Saint Helens, Merseyside, United Kingdom has an average annual maximum temperature of 15°C (59°F), ranging from 9°C (48°F) in January to 21°C (70°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

Visitors to Saint Helens can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 13°C (55°F) in July to 3°C (37°F) in January.

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

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 173 hours of sunshine.

The chart below shows the average temperature throughout the year:

Saint Helens'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.

Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.

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.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

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