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.

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:

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.