Weather in Saint Peter Port, Guernsey, Channel Islands in September

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Visiting Saint Peter Port, Guernsey, Channel Islands in September

September is one of the best months to visit Saint Peter Port for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

The weather in September is marginally cooler than the previous month and temperatures continue to drop into October. September has average maximum temperatures of 18°C (64°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 48% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day.

September has total rainfall of 0.9cm (0.4inches) making it mostly dry but with short lived occasional showers. There are only 13 days with some rainfall so you can still enjoy the beach on the majority of days.

Sea temperatures are a moderate 20°C (69°F). September is a pleasant month for swimming in Saint Peter Port though some people may prefer warmer water. The sea temperature in September is cooler than the previous month and temperatures continue to drop into October.

As September arrives, the weather begins to cool down slightly, but it's still warm enough for sunbathing and swimming. Water sports like snorkeling, diving, surfing, windsurfing, and kitesurfing continue to be popular, with many people enjoying the pleasant sea conditions. Also consider visiting Saint Peter Port in one of the other best months of June, July, August, for the best beach weather. Also consider one of our other suggestions for September.

Can you sunbathe in Saint Peter Port in September?

No, September is not a good time for sunbathing in Saint Peter Port.

September has average maximum temperatures of 18°C (64°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 48% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day. September has total rainfall of 0.9cm (0.4inches) making it mostly dry but with short lived occasional showers. There are only 13 days with some rainfall so you can still enjoy the beach on the majority of days.

More about September temperature and sunshine.

Can you swim in Saint Peter Port in September?

Yes, September is a pleasant month for swimming in Saint Peter Port with moderate sea temperatures 20°C (69°F).

More about September sea temperatures.

Is September a good time to holiday in Saint Peter Port?

Yes, September is a slightly cool time for a holiday in Saint Peter Port.

September has average maximum temperatures of 18°C (64°F) which is not that warm but sunbathing may be possible on some clear days. The sunshine percentage is 48% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day. September has total rainfall of 0.9cm (0.4inches) making it mostly dry but with short lived occasional showers. There are only 13 days with some rainfall so you can still enjoy the beach on the majority of days. Sea temperatures are a moderate 20°C (69°F). September is a pleasant month for swimming in Saint Peter Port though some people may prefer warmer water.

More about the September temperatures and sunshine.

Is Saint Peter Port warm in September?

No, Saint Peter Port is not that warm but sunbathing may be possible on some clear days in September.

The average maximum temperature in Saint Peter Port in September is 18°C (64°F). The average maximum temperature is 19°C (66°) in the previous month and 15°C (60°F) in the next month.

The average temperature in Saint Peter Port in September is 16°C (60°F). The average temperature is 17°C (62°F) in the previous month and 13°C (56°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Saint Peter Port in September?

The average day light hours per day in Saint Peter Port in September are 12.6. The sunshine percentage is 48% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day.

More about September sunshine.

Crowds in Saint Peter Port in September

As the summer holidays come to an end in September, the beach becomes less crowded. The weather is still warm and pleasant, making it an enjoyable time to visit, but the number of visitors decreases compared to August.

Temperature in Saint Peter Port in September

The weather in September is marginally cooler than the previous month and temperatures continue to drop into October. The average maximum temperature in Saint Peter Port in September is 18°C (64°F). The average maximum temperature is 19°C (66°F) in the previous month and 15°C (60°F) in the next month.

The average temperature in Saint Peter Port in September is 16°C (60°F). The average temperature is 17°C (62°F) in the previous month and 13°C (56°F) in the next month.

The average minimum temperature in Saint Peter Port in September is 13°C (56°F). The minimum temperature is 14°C (58°F) in the previous month and 12°C (53°F) in the next month.

Sunshine in Saint Peter Port in September

The days in September are shorter than the previous month and days continue to get shorter into October. September has far fewer hours of sunshine than the previous month and hours of sunshine continue to drop markedly into October. During September the average day light hours are 12.6 per day in Saint Peter Port. The sunshine percentage is 48% making it quite sunny but with regular periods of cloudy and overcast skies. There are 6.1 hours of sunshine per day.

The ultraviolet index in Saint Peter Port in September is typically 4.5 during September. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Saint Peter Port in September

The average sea water temperature in Saint Peter Port in September is 20.4°C (68.7°F) which is comfortable for swimming though some may prefer warmer water. The sea temperature in September is cooler than the previous month and temperatures continue to drop into October.

Rainfall in Saint Peter Port in September

September weather is marginally wetter than the previous month and rainfall continues to rise slightly into October. September has fewer days of rain than the previous month. The average total rainfall in Saint Peter Port in September is 0.9cm (0.4inches) and on average there are 13 rainy days in September making it a pretty wet time to visit the beach.

Humidity in Saint Peter Port in September

The maximum dew point (an indicator of humidity) in Saint Peter Port in September is 15°C (58°F) which is comfortable for everyone. The dew point is 16°C (60°F) in the previous month and 13°C (13°F) in the next month.

The average maximum relative humidity in Saint Peter Port in September is typically 95.4%. The maximum relative humidity is 96.7% in the previous month and 94.2% in the next month.

The average relative humidity in Saint Peter Port in September is typically 84%. The average relative humidity is 84.6% in the previous month and 84.7% in the next month.

Wind Speed in Saint Peter Port in September

The average maximum wind speed in Saint Peter Port in September is typically 27KM/H (17MPH). The average maximum wind speed is 27KM/H (16MPH) in the previous month and 31KM/H (19MPH) in the next month.

The average wind speed in Saint Peter Port in September is typically 18KM/H (11MPH). The average wind speed is 18KM/H (11MPH) in the previous month and 21KM/H (13MPH) in the next month.

The average wind direction in Saint Peter Port in September is from the West.

Monthly Averages

Suggested Beaches in September

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