Guernsey Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Guernsey, the United Kingdom in September.

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St Peter Port St Martin Guernsey St Saviour Guernsey Castel

Are you planning a trip a to Guernsey, the United Kingdom in September and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Guernsey in September

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

Temperatures

You can expect pleasant maximum daytime temperatures of around 19°C (66°F) and nighttime temperatures around 16°C (61°F) in St Peter Port.

To learn more about the conditions in specific areas of Guernsey, the United Kingdom, check out the map below.

Precipitation

September is a moderate rainy month with an average rainfall of around 67 mm (2.6 in) in St Peter Port.

Average sunshine

Most places get a reasonable amount of sunshine. Take St Peter Port as an example - it receives around 182 hours of sunlight, offering a nice mix of sunny and partly cloudy days. Want to compare this with brighter destinations? Try our weather planner to explore your options.

Explore Guernsey by month

Pick a month to see the average temperature, rainfall and sunshine in Guernsey — and find the best time to visit. (based on St Peter Port)

January11°C (52°F) February11°C (52°F) March11°C (52°F) April12°C (54°F) May14°C (57°F) June16°C (61°F) This monthJuly18°C (64°F) August19°C (66°F) September19°C (66°F) October17°C (63°F) November14°C (57°F) December12°C (54°F)
Best Time to Visit Guernsey →

Best Places to Visit in Guernsey in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Guernsey.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Guernsey

What is the weather like in September for some of the most popular destinations in Guernsey, the United Kingdom?

Temperature range in Guernsey (September)

Precipitation variation in Guernsey (September)

St Peter Port

In September St Peter Port generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 16°C (61°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
19°C (66°F)
19°C (66°F)
17°C (63°F)
Min temperature
16°C (61°F)
16°C (61°F)
14°C (57°F)
Monthly sun hours
232 hours
182 hours
119 hours
Monthly rainfall
55 mm (2.2 in)
67 mm (2.6 in)
116 mm (4.6 in)
Monthly rainy days
11 days
13 days
15 days
Weather conditions
pleasant
pleasant
unpleasant
Climate in St Peter Port →

St Martin Guernsey

In September St Martin Guernsey generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 16°C (61°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
19°C (66°F)
19°C (66°F)
17°C (63°F)
Min temperature
16°C (61°F)
16°C (61°F)
14°C (57°F)
Monthly sun hours
232 hours
182 hours
119 hours
Monthly rainfall
56 mm (2.2 in)
67 mm (2.6 in)
116 mm (4.6 in)
Monthly rainy days
11 days
13 days
15 days
Weather conditions
pleasant
pleasant
unpleasant
Climate in St Martin Guernsey →

St Saviour Guernsey

In September St Saviour Guernsey generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 16°C (61°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
19°C (66°F)
18°C (64°F)
17°C (63°F)
Min temperature
16°C (61°F)
16°C (61°F)
14°C (57°F)
Monthly sun hours
232 hours
182 hours
119 hours
Monthly rainfall
56 mm (2.2 in)
66 mm (2.6 in)
116 mm (4.6 in)
Monthly rainy days
11 days
13 days
15 days
Weather conditions
pleasant
pleasant
unpleasant
Climate in St Saviour Guernsey →

Castel

In September Castel generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 16°C (61°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
19°C (66°F)
18°C (64°F)
17°C (63°F)
Min temperature
16°C (61°F)
16°C (61°F)
14°C (57°F)
Monthly sun hours
232 hours
182 hours
119 hours
Monthly rainfall
56 mm (2.2 in)
66 mm (2.6 in)
116 mm (4.6 in)
Monthly rainy days
11 days
13 days
15 days
Weather conditions
pleasant
pleasant
unpleasant
Climate in Castel →

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

Popular cities in September

Day & night temperatures, rainfall and average weather in Guernsey in September.

City Weather Day temp Night temp Rainfall
St Peter Port 19°C (66°F) 16°C (61°F) 67 mm (2.6 in)
St Martin Guernsey 19°C (66°F) 16°C (61°F) 67 mm (2.6 in)
St Saviour Guernsey 18°C (64°F) 16°C (61°F) 66 mm (2.6 in)
Castel 18°C (64°F) 16°C (61°F) 66 mm (2.6 in)

Guernsey weather in September: frequently asked questions

What is the weather like in Guernsey, the United Kingdom in September?

Guernsey, the United Kingdom typically experiences pleasant weather in September, part of the season. Daytime highs in St Peter Port average around 19°C (66°F), and temperatures drop to about 16°C (61°F) at night.

What is the average temperature in Guernsey, the United Kingdom in September?

Daytime temperatures in St Peter Port peak at roughly 19°C (66°F) in September, dropping to about 16°C (61°F) overnight.

Does Guernsey, the United Kingdom get a lot of rain in September?

Not particularly. St Peter Port averages just 67 mm (2.6 in) of rain in September, making it a mostly dry month for Guernsey, the United Kingdom.

Is September a Good Time to Visit Guernsey, the United Kingdom?

We believe that September is one of the best times to visit Guernsey, the United Kingdom 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, the United Kingdom 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.

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.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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