Bolton Temperature by Month
The average annual maximum temperature in Bolton, Greater Manchester, United Kingdom is 14°C (57°F), with daytime highs ranging from 8°C (46°F) in February to 20°C (68°F) in July. This page covers monthly averages, day-night differences, and how Bolton compares to cities worldwide.
Bolton Monthly Temperatures
Visitors to Bolton can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 12°C (54°F) in July to 2°C (36°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Bolton 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:
Temperature: Bolton 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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Bolton vs World: Temperature Compared
Bolton'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:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
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 Bolton this rarely lasts long on the ground.
For more on Bolton's weather — including monthly rainfall, sunshine hours, and humidity — visit our Bolton climate page.
