St Saviour Guernsey Temperature by Month
St Saviour Guernsey, Guernsey, United Kingdom has an average annual maximum temperature of 14°C (57°F), with moderate seasonal shifts ranging from 11°C (52°F) in February to 19°C (66°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
St Saviour Guernsey Monthly Temperatures
In St Saviour Guernsey, seasonal changes bring about a moderate variation in temperatures. Nighttime lows range from 16°C (61°F) in August to 7°C (45°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in St Saviour Guernsey 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 232 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: St Saviour Guernsey 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.
very warm
warm
pleasant
moderate
cold
very cold
St Saviour Guernsey vs World: Temperature Compared
St Saviour Guernsey'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:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
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 St Saviour Guernsey's weather — including monthly rainfall, sunshine hours, and humidity — visit our St Saviour Guernsey climate page.
