Mellis Temperature by Month

The average annual maximum temperature in Mellis, Suffolk, United Kingdom is 15°C (59°F), with daytime highs ranging from 8°C (46°F) in January to 23°C (73°F) in July. This page covers monthly averages, day-night differences, and how Mellis compares to cities worldwide.

Depending on the time of the year, temperatures range from comfortable to cold in Mellis. At night, minimum temperatures range from 13°C (55°F) in July to 2°C (36°F) in January.

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

Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 213 hours of sunshine.

The chart below shows the average temperature throughout the year:

Mellis'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:

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.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm 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.

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 Mellis this rarely lasts long on the ground.

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