Ottery Saint Mary Temperature by Month
Ottery Saint Mary, Devon, 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 July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Ottery Saint Mary Monthly Temperatures
The climate in Ottery Saint Mary is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 13°C (55°F) in July to 3°C (37°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Ottery Saint Mary by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. July, the city's warmest month, averages 192 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Ottery Saint Mary 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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Ottery Saint Mary vs World: Temperature Compared
Ottery Saint Mary'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.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
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.
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 Ottery Saint Mary's weather — including monthly rainfall, sunshine hours, and humidity — visit our Ottery Saint Mary climate page.
