October weather forecast
Saint Peter Port, Guernsey

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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 October

October in Saint Peter Port, Guernsey, signifies the full onset of autumn with a marked decrease in temperatures and longer, cooler nights. An increase in rainfall to 58mm (2.28") over a rise in the number of rainy days, underlines the progression towards winter. The wind speed takes an upward turn, adding to the declining temperatures. Despite the decrease in daylight hours, visibility remains excellent, making the whole of October a favourable time for outdoor exploration.

Temperature

October's weather displays an average high-temperature of a moderate 15.5°C (59.9°F), slightly varied from September's 17.2°C (63°F). During October, Saint Peter Port's temperature shows a minor deviation from daytime highs, falling to a steady low-temperature average of 13.6°C (56.5°F).

Humidity

In October, the average relative humidity is 79%.

Rainfall

In October, in Saint Peter Port, the rain falls for 18.5 days. Throughout October, 58mm (2.28") of precipitation is accumulated. Throughout the year, in Saint Peter Port, there are 196.3 rainfall days, and 557mm (21.93") of precipitation is accumulated.

Snowfall

February through December are months without snowfall in Saint Peter Port.

Sea temperature

In Saint Peter Port, the average seawater temperature in October is 15°C (59°F).
Note: Swimming in water at 15°C (59°F) is not a pleasing experience for the majority. As the temperature descends from 21°C (69.8°F) to 15°C (59°F), controlling breathing becomes increasingly hard.

Daylight

The average length of the day in October in Saint Peter Port is 10h and 46min.
On the first day of the month, sunrise is at 07:10 and sunset at 18:48 BST. On the last day of October, in Saint Peter Port, sunrise is at 06:57 and sunset at 16:49 GMT.
Note: On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends, and the time zone changes from BST to GMT. Daylight Saving Time starts again on Sunday, 30. March 2025, at 01:00; consequently, the time zone reverts from GMT to BST.

Sunshine

In October, the average sunshine in Saint Peter Port, Guernsey, is 4.9h.

UV index

The average daily maximum UV index in October in Saint Peter Port is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 4 in October leads to these recommendations:
Guard yourself - Avoiding sunburn is suggested. Around midday, solar radiation is most harmful; hence, exposure should be limited. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

What are October temperatures in Saint Peter Port?

In October, the average high-temperature and low-temperature in Saint Peter Port, Guernsey, are 15.5°C (59.9°F) and 13.6°C (56.5°F) respectively.

What is the average humidity in October in Saint Peter Port?

In Saint Peter Port, the average relative humidity in October is 79%.

How much does it rain in Saint Peter Port in October?

In Saint Peter Port, in October, it is raining for 18.5 days, with typically 58mm (2.28") of accumulated precipitation.

When it does not snow in Saint Peter Port?

In Saint Peter Port, Guernsey, snow does not fall in February through December.

What is the sea water temperature in October in Saint Peter Port?

In October, the average sea temperature in Saint Peter Port, Guernsey, is 15°C (59°F). For swimming, a surface water temperature of 15°C (59°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Saint Peter Port have in October?

The average day length in October is 10h and 46min.

When is the sunrise / sunset in October in Saint Peter Port?

In October, on the first day of the month, sunrise is at 07:10 and sunset at 18:48 BST. On the last day of the month, in Saint Peter Port, Guernsey, sunrise is at 06:57 and sunset at 16:49 GMT.

When does Daylight Saving Time (DST) end in October in Saint Peter Port?

On Sunday, 27. October 2024, at 02:00, Daylight Saving Time ends in Saint Peter Port, and the time zone changes from BST to GMT. The next DST starts on Sunday, 30. March 2025, at 01:00.

How many hours of sunshine does Saint Peter Port have in October?

The average sunshine duration in October in Saint Peter Port is 4.9h.

What is the UV index reading in October in Saint Peter Port?

The average daily maximum UV index in October in Saint Peter Port, Guernsey, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in October
Saint Peter Port, Guernsey

Average temperature in October - Saint Peter Port, Guernsey
  • Average high temperature in October: 15.5°C

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).

  • Average low temperature in October: 13.6°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).

Average pressure in October
Saint Peter Port, Guernsey

Average pressure in October - Saint Peter Port, Guernsey
  • Average pressure in October: 1015.7mbar

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

Average wind speed in October
Saint Peter Port, Guernsey

Average wind speed in October - Saint Peter Port, Guernsey
  • Average wind speed in October: 29.1km/h

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).

Average humidity in October
Saint Peter Port, Guernsey

Average humidity in October - Saint Peter Port, Guernsey
  • Average humidity in October: 79%

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

Average rainfall in October
Saint Peter Port, Guernsey

Average rainfall in October - Saint Peter Port, Guernsey
  • Average rainfall in October: 58mm

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

Average rainfall days in October
Saint Peter Port, Guernsey

Average rainfall days in October - Saint Peter Port, Guernsey
  • Average rainfall days in October: 18.5 days

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).

Average snowfall in October
Saint Peter Port, Guernsey

Average snowfall in October - Saint Peter Port, Guernsey
  • Average snowfall in October: 0mm

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

Average snowfall days in October
Saint Peter Port, Guernsey

Average snowfall days in October - Saint Peter Port, Guernsey
  • Average snowfall days in October: 0 days

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

Average sea temperature in October
Saint Peter Port, Guernsey

Average sea temperature in October - Saint Peter Port, Guernsey
  • Average sea temperature in October: 15°C

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).

Average daylight in October /
Average sunshine in October
Saint Peter Port, Guernsey

Average daylight in October / Average sunshine in October - Saint Peter Port, Guernsey
  • Average daylight in October: 10h and 5min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).

  • Average sunshine in October: 4h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).

Average sunshine days in October
Saint Peter Port, Guernsey

Average sunshine days in October - Saint Peter Port, Guernsey
  • Average sunshine days in October: 8.6 days

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

Average UV index in October
Saint Peter Port, Guernsey

Average UV index in October - Saint Peter Port, Guernsey
  • Average UV index in October: 4

The 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).

Average cloud cover in October
Saint Peter Port, Guernsey

Average cloud cover in October - Saint Peter Port, Guernsey
  • Average cloud cover in October: 50

The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 37).

Average visibility in October
Saint Peter Port, Guernsey

Average visibility in October - Saint Peter Port, Guernsey
  • Average visibility in October: 10km

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

Saint Peter Port, Guernsey

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