Monthly weather forecast and climate
Saint Peter Port, Guernsey

A calm sunny day in Saint Peter Port, Guernsey, with ships docked at the harbor
A calm sunny day in Saint Peter Port, Guernsey, with ships docked at the harbor

Weather in January

January, like December, is a frosty winter month in Saint Peter Port, Guernsey, with average temperature varying between 9.8°C (49.6°F) and 7.8°C (46°F). In January, the average high-temperature is practically the same as in December - a frosty 9.8°C (49.6°F). Weather in January »

Weather in February

February, the last month of the winter, in Saint Peter Port, is also a frosty month, with temperature in the range of an average high of 9.2°C (48.6°F) and an average low of 7°C (44.6°F). February is the coldest month, with an average high-temperature of 9.2°C (48.6°F) and an average low-temperature of 7°C (44.6°F). Weather in February »

Weather in March

The first month of the spring, March, is still a chilly month in Saint Peter Port, Guernsey, with average temperature ranging between max 9.8°C (49.6°F) and min 7.4°C (45.3°F). In Saint Peter Port, the average high-temperature in March is almost the same as in February - a still chilly 9.8°C (49.6°F). Weather in March »

Weather in April

April is a cool spring month in Saint Peter Port, Guernsey, with average temperature ranging between max 11°C (51.8°F) and min 8.9°C (48°F). In April, the average high-temperature is essentially the same as in March - a cool 11°C (51.8°F). Weather in April »

Weather in May

The last month of the spring, May, is another cool month in Saint Peter Port, Guernsey, with average temperature fluctuating between 12.8°C (55°F) and 10.6°C (51.1°F). In May, the average high-temperature is relatively the same as in April - a still cool 12.8°C (55°F). Weather in May »

Weather in June

June, the first month of the summer, in Saint Peter Port, is a moderate month, with average temperature fluctuating between 13.2°C (55.8°F) and 15.2°C (59.4°F). In June, the average high-temperature is relatively the same as in May - a mild 15.2°C (59.4°F). Weather in June »

Weather in July

July in Saint Peter Port, Guernsey, is a comfortable summer month, with average temperature varying between 16.9°C (62.4°F) and 15.3°C (59.5°F). In Saint Peter Port, the average high-temperature is almost the same as in June - a comfortable 16.9°C (62.4°F). Weather in July »

Weather in August

August, the last month of the summer, in Saint Peter Port, is also an enjoyable month, with average temperature varying between 17.8°C (64°F) and 15.8°C (60.4°F). With an average high-temperature of 17.8°C (64°F) and an average low-temperature of 15.8°C (60.4°F), August is the warmest month. Weather in August »

Weather in September

The first month of the autumn, September, is still a comfortable month in Saint Peter Port, Guernsey, with average temperature fluctuating between 17.2°C (63°F) and 15.4°C (59.7°F). In Saint Peter Port, Guernsey, the average high-temperature is almost the same as in August - a still comfortable 17.2°C (63°F). Weather in September »

Weather in October

October, like September, is another mild autumn month in Saint Peter Port, Guernsey, with average temperature fluctuating between 15.5°C (59.9°F) and 13.6°C (56.5°F). In Saint Peter Port, the average high-temperature is essentially the same as in September - a mild 15.5°C (59.9°F). Weather in October »

Weather in November

November, the last month of the autumn, in Saint Peter Port, is also a moderate month, with average temperature fluctuating between 10.9°C (51.6°F) and 13°C (55.4°F). In November, the average high-temperature is almost the same as in October - a still moderate 13°C (55.4°F). Weather in November »

Weather in December

December, the first month of the winter, in Saint Peter Port, is still a cool month, with temperature in the range of an average high of 11.1°C (52°F) and an average low of 9.2°C (48.6°F). In December, the average high-temperature is almost the same as in November - a fresh 11.1°C (52°F). Weather in December »
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FAQ

How much does it rain in Saint Peter Port?

Throughout the year, there are 196.3 rainfall days, and 557mm (21.93") of precipitation is accumulated.

When does it snow in Saint Peter Port?

The only month with snowfall in Saint Peter Port, Guernsey, is January.

How many days does it snow in Saint Peter Port?

Throughout the year, there are 0.5 snowfall days, and 2mm (0.08") of snow is accumulated.

What is the snowiest month in Saint Peter Port?

The month with the most snowfall in Saint Peter Port, Guernsey, is January when snow falls for 0.3 days and typically aggregates up to 2mm (0.08") of snow.

What is the month with the least sunshine in Saint Peter Port?

Months with the least sunshine in Saint Peter Port are January, November and December, with an average of 3.9h of sunshine.

What is the coldest month in Saint Peter Port?

February is the coldest month, with an average high-temperature of 9.2°C (48.6°F) and an average low-temperature of 7°C (44.6°F).

When it does not snow in Saint Peter Port?

February through December are months without snowfall.

What are the months with the coldest sea water in Saint Peter Port?

February and March, with an average sea temperature of 9°C (48.2°F), are months with the coldest seawater in Saint Peter Port, Guernsey.

What is the month with the lowest UV index in Saint Peter Port?

February is the month with the lowest UV index, with an average maximum UV index of 2.

What are the most humid months in Saint Peter Port?

Months with the highest humidity are June and July, with an average relative humidity of 84%.

When are the longest days in Saint Peter Port?

With an average of 16.2h of daylight, June has the longest days of the year in Saint Peter Port, Guernsey.

What is the driest month in Saint Peter Port?

July is the month with the least rainfall. Rain falls for 12.8 days and accumulates 26mm (1.02") of precipitation.

What month has the most sunshine in Saint Peter Port?

The month with the most sunshine in Saint Peter Port is July, with an average of 9.7h of sunshine.

When is the highest UV index in Saint Peter Port?

July through September, with an average maximum UV index of 5, are months with the highest UV index.

What is the warmest month in Saint Peter Port?

With an average high-temperature of 17.8°C (64°F) and an average low-temperature of 15.8°C (60.4°F), August is the warmest month in Saint Peter Port.

When is the sea warmest in Saint Peter Port?

With an average sea temperature of 17°C (62.6°F), August is the month with the warmest seawater in Saint Peter Port, Guernsey.

What is the least humid month in Saint Peter Port?

Months with the lowest humidity are November and December, with an average relative humidity of 77%.

What is the wettest month in Saint Peter Port?

The month with the most rainfall in Saint Peter Port is November when the rain falls for 22.8 days and typically aggregates up to 87mm (3.43") of precipitation.

What is the month with the shortest days in Saint Peter Port?

The month with the shortest days in Saint Peter Port, Guernsey, is December, with an average of 8.3h of daylight.

Average temperature
Saint Peter Port, Guernsey

Average temperature - Saint Peter Port, Guernsey

The warmest month (with the highest average high temperature) is August (17.8°C).
The month with the lowest average high temperature is February (9.2°C).

The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7°C).

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Average pressure
Saint Peter Port, Guernsey

Average pressure - Saint Peter Port, Guernsey

The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).

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Average wind speed
Saint Peter Port, Guernsey

Average wind speed - Saint Peter Port, Guernsey

The windiest month (with the highest average wind speed) is December (36km/h).
The calmest month (with the lowest average wind speed) is July (21.9km/h).

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Average humidity
Saint Peter Port, Guernsey

Average humidity - Saint Peter Port, Guernsey

Months with the highest relative humidity are June and July (84%).
Months with the lowest relative humidity are November and December (77%).

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Average rainfall
Saint Peter Port, Guernsey

Average rainfall - Saint Peter Port, Guernsey

The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).

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Average rainfall days
Saint Peter Port, Guernsey

Average rainfall days - Saint Peter Port, Guernsey

The month with the highest number of rainy days is November (22.8 days).
The month with the least rainy days is June (11.5 days).

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Average snowfall
Saint Peter Port, Guernsey

Average snowfall - Saint Peter Port, Guernsey

The month with the highest snowfall is January (2mm).
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days
Saint Peter Port, Guernsey

Average snowfall days - Saint Peter Port, Guernsey

The month with the highest number of snowfall days is January (0.3 days).
Months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average sea temperature
Saint Peter Port, Guernsey

Average sea temperature - Saint Peter Port, Guernsey

The best month for swimming (with the highest average sea temperature) is August (17°C).
The coldest months (with the lowest average sea temperature) are February and March (9°C).

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Average daylight / Average sunshine
Saint Peter Port, Guernsey

Average daylight / Average sunshine - Saint Peter Port, Guernsey

The month with the longest days is June (Average daylight: 16.2h).
The month with the shortest days is December (Average daylight: 8.3h).

The month with the most sunshine is July (Average sunshine: 9.7h).
Months with the least sunshine are January, November and December (Average sunshine: 3.9).

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Average sunshine days
Saint Peter Port, Guernsey

Average sunshine days - Saint Peter Port, Guernsey

The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4 days).

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Average UV index
Saint Peter Port, Guernsey

Average UV index - Saint Peter Port, Guernsey

Months with the highest UV index are July, August and September (UV index 5).
The month with the lowest UV index is February (UV index 2).

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Average visibility
Saint Peter Port, Guernsey

Average visibility - Saint Peter Port, Guernsey

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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