Waltham Temperature by Month
Waltham, Kent, United Kingdom has an average annual maximum temperature of 15°C (59°F), ranging from 9°C (48°F) in February to 22°C (72°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Waltham Monthly Temperatures
With significant temperature fluctuations, Waltham enjoys distinct seasons year-round. Nighttime lows range 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 Waltham 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. August, the warmest month, gets 196 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Waltham 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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Waltham vs World: Temperature Compared
Waltham'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:
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.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
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 Waltham's weather — including monthly rainfall, sunshine hours, and humidity — visit our Waltham climate page.
