Harwich Temperature by Month
Harwich in Essex, United Kingdom sees significant seasonal temperature differences, with daytime highs between 8°C (46°F) in February and 21°C (70°F) in August, averaging 14°C (57°F) annually. Explore the full monthly breakdown below.
Harwich Monthly Temperatures
The climate in Harwich is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 15°C (59°F) in August to 4°C (39°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Harwich by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 205 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Harwich 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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Harwich vs World: Temperature Compared
Harwich'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:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
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.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Harwich's weather — including monthly rainfall, sunshine hours, and humidity — visit our Harwich climate page.
