Chelmsford Temperature by Month
Chelmsford in Essex, United Kingdom sees significant seasonal temperature differences, with daytime highs between 9°C (48°F) in February and 23°C (73°F) in July, averaging 15°C (59°F) annually. Explore the full monthly breakdown below.
Chelmsford Monthly Temperatures
In Chelmsford, temperatures differ significantly between summer and winter months. Nighttime lows reflect this range, dropping from 14°C (57°F) in July to 3°C (37°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Chelmsford by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. July, the warmest month, gets 211 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Chelmsford 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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Chelmsford vs World: Temperature Compared
Chelmsford'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.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
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.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Chelmsford's weather — including monthly rainfall, sunshine hours, and humidity — visit our Chelmsford climate page.
