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Guernsey weather in September

Thinking about venturing to Guernsey this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Guernsey in September?

Guernsey is a region in the United Kingdom. September in Guernsey generally has pleasant temperatures, with moderate precipitation.

You can expect pleasant maximum daytime temperatures of around 19°C and nighttime temperatures around 16°C in St Peter Port.

September is a moderate rainy month with an average rainfall of around 67 mm in St Peter Port. Most areas experience a moderate amount of sunshine, with approximately 182 hours of sunlight expected in St Peter Port. This makes it neither too gloomy nor overly bright.

For specific regional insights in Guernsey for September, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Guernsey climate page.

Where to go in Guernsey in September

Find more information for the most popular destinations in the Guernsey on the map below. Click on a destination dot for more detailes.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in September for the 4 most popular destinations in Guernsey?

St Peter Port

In September St Peter Port generally has pleasant temperatures with maximum daytime temperatures around 19°C, minimum nighttime temperatures around 16°C and moderate monthly rainfall. So on average the conditions are pleasant that month.

St Peter Port
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
19°C 
16°C 
232 hours 
55 mm 
11 days 
19°C 
16°C 
182 hours 
67 mm 
13 days 
October   >> October
>>  
17°C 
14°C 
119 hours 
116 mm 
15 days 
Climate in St Peter Port

St Martin Guernsey

In September St Martin Guernsey generally has pleasant temperatures with maximum daytime temperatures around 19°C, minimum nighttime temperatures around 16°C and moderate monthly rainfall. So on average the conditions are pleasant that month.

St Martin Guernsey
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
19°C 
16°C 
232 hours 
56 mm 
11 days 
19°C 
16°C 
182 hours 
67 mm 
13 days 
October   >> October
>>  
17°C 
14°C 
119 hours 
116 mm 
15 days 
Climate in St Martin Guernsey

St Saviour Guernsey

In September St Saviour Guernsey generally has pleasant temperatures with maximum daytime temperatures around 18°C, minimum nighttime temperatures around 16°C and moderate monthly rainfall. So on average the conditions are pleasant that month.

St Saviour Guernsey
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
19°C 
16°C 
232 hours 
56 mm 
11 days 
18°C 
16°C 
182 hours 
66 mm 
13 days 
October   >> October
>>  
17°C 
14°C 
119 hours 
116 mm 
15 days 
Climate in St Saviour Guernsey

Castel

In September Castel generally has pleasant temperatures with maximum daytime temperatures around 18°C, minimum nighttime temperatures around 16°C and moderate monthly rainfall. So on average the conditions are pleasant that month.

Castel
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
19°C 
16°C 
232 hours 
56 mm 
11 days 
18°C 
16°C 
182 hours 
66 mm 
13 days 
October   >> October
>>  
17°C 
14°C 
119 hours 
116 mm 
15 days 
Climate in Castel

Is your destination not in the list? Have a look at other destinations in Guernsey, in the United Kingdom.

Is September the best time to visit Guernsey?

We believe that September is one of the best times to visit Guernsey with overall pleasant weather in St Peter Port. It's worth noting that weather conditions might differ depending on the location you visit.

On average, the best time to visit Guernsey is in July, August and September with generally pleasant weather in St Peter Port. On the other hand, the weather in January and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Guernsey. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to the United Kingdom? Get detailed historical weather averages for many cities in the United Kingdom.

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