Slaley Temperature by Month
Slaley, Northumberland, United Kingdom has an average annual maximum temperature of 13°C (55°F), ranging from 7°C (45°F) in January to 20°C (68°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Slaley Monthly Temperatures
With significant temperature fluctuations, Slaley enjoys distinct seasons year-round. Nighttime lows range from 11°C (52°F) in July to 1°C (34°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Slaley 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 175 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Slaley 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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Slaley vs World: Temperature Compared
Slaley's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
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 Slaley's weather — including monthly rainfall, sunshine hours, and humidity — visit our Slaley climate page.
