Brentwood Temperature by Month
The average annual maximum temperature in Brentwood, Essex, United Kingdom is 15°C (59°F), with daytime highs ranging from 9°C (48°F) in January to 23°C (73°F) in July. This page covers monthly averages, day-night differences, and how Brentwood compares to cities worldwide.
Brentwood Monthly Temperatures
Depending on the time of the year, temperatures range from warm to cold in Brentwood. Nighttime lows follow the same pattern, ranging from 14°C (57°F) to 3°C (37°F).
The chart below illustrates the average maximum day and minimum night temperatures in Brentwood 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 211 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Brentwood 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.
very warm
warm
pleasant
moderate
cold
very cold
Brentwood vs World: Temperature Compared
Brentwood'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:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
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.
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 Brentwood this rarely lasts long on the ground.
For more on Brentwood's weather — including monthly rainfall, sunshine hours, and humidity — visit our Brentwood climate page.
