Mevagissey

Cornwall Weather in September

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

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Newquay St Austell Penzance Bude

Planning a trip to Cornwall, the United Kingdom this September? Here's what you need to know about the weather:

What to Expect in Cornwall in September

Cornwall, the United Kingdom is a region in the United Kingdom. September in Cornwall generally has pleasant temperatures, with moderate precipitation. The month of September is in the summer season.

Temperatures

You can expect pleasant maximum daytime temperatures of around 19°C (66°F) and nighttime temperatures around 13°C (55°F) in Newquay.

For specific regional insights in Cornwall, the United Kingdom, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Porthscatho with an average of 60 mm (2.4 in) to moderate rainfall in Gooseham with 90 mm (3.5 in).

Average sunshine

Sunshine is fairly consistent across many areas. Newquay receives about 165 hours of sunlight in September, providing a good balance between sunny spells and cloud cover. If you're after more sunshine hours, take a look at our weather planner for other sun-rich destinations worldwide.

Explore Cornwall by month

Pick a month to see the average temperature, rainfall and sunshine in Cornwall — and find the best time to visit. (based on Newquay)

January11°C (52°F) February10°C (50°F) March12°C (54°F) April13°C (55°F) May16°C (61°F) June18°C (64°F) This monthJuly20°C (68°F) August20°C (68°F) September19°C (66°F) October16°C (61°F) November13°C (55°F) December11°C (52°F)
Best Time to Visit Cornwall →

Best Places to Visit in Cornwall in September

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

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 Cornwall

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

Temperature range in Cornwall (September)

Precipitation variation in Cornwall (September)

Newquay

In September Newquay generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 13°C (55°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
20°C (68°F)
19°C (66°F)
16°C (61°F)
Min temperature
14°C (57°F)
13°C (55°F)
11°C (52°F)
Monthly sun hours
202 hours
165 hours
118 hours
Monthly rainfall
77 mm (3 in)
70 mm (2.8 in)
98 mm (3.9 in)
Monthly rainy days
15 days
15 days
18 days
Weather conditions
perfect
pleasant
tolerable
Climate in Newquay →

St Austell

In September St Austell generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 12°C (54°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
20°C (68°F)
19°C (66°F)
16°C (61°F)
Min temperature
14°C (57°F)
12°C (54°F)
10°C (50°F)
Monthly sun hours
202 hours
165 hours
118 hours
Monthly rainfall
78 mm (3.1 in)
69 mm (2.7 in)
99 mm (3.9 in)
Monthly rainy days
15 days
15 days
18 days
Weather conditions
perfect
pleasant
tolerable
Climate in St Austell →

Penzance

In September Penzance generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 14°C (57°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)
16°C (61°F)
Min temperature
15°C (59°F)
14°C (57°F)
12°C (54°F)
Monthly sun hours
202 hours
165 hours
118 hours
Monthly rainfall
74 mm (2.9 in)
70 mm (2.8 in)
104 mm (4.1 in)
Monthly rainy days
15 days
16 days
19 days
Weather conditions
pleasant
pleasant
unpleasant
Climate in Penzance →

Bude

In September Bude generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 12°C (54°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
20°C (68°F)
18°C (64°F)
15°C (59°F)
Min temperature
14°C (57°F)
12°C (54°F)
10°C (50°F)
Monthly sun hours
205 hours
162 hours
117 hours
Monthly rainfall
91 mm (3.6 in)
84 mm (3.3 in)
116 mm (4.6 in)
Monthly rainy days
15 days
16 days
19 days
Weather conditions
perfect
pleasant
unpleasant
Climate in Bude →

Falmouth

In September Falmouth generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°F), minimum nighttime temperatures around 13°C (55°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

« August
September
October »
August
September
October
Max temperature
20°C (68°F)
19°C (66°F)
16°C (61°F)
Min temperature
14°C (57°F)
13°C (55°F)
11°C (52°F)
Monthly sun hours
202 hours
165 hours
118 hours
Monthly rainfall
68 mm (2.7 in)
61 mm (2.4 in)
89 mm (3.5 in)
Monthly rainy days
14 days
15 days
18 days
Weather conditions
perfect
pleasant
tolerable
Climate in Falmouth →

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

Popular cities in September

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

City Weather Day temp Night temp Rainfall
Newquay 19°C (66°F) 13°C (55°F) 70 mm (2.8 in)
St Austell 19°C (66°F) 12°C (54°F) 69 mm (2.7 in)
Penzance 18°C (64°F) 14°C (57°F) 70 mm (2.8 in)
Bude 18°C (64°F) 12°C (54°F) 84 mm (3.3 in)
Falmouth 19°C (66°F) 13°C (55°F) 61 mm (2.4 in)
Padstow 19°C (66°F) 13°C (55°F) 75 mm (3 in)

Cornwall weather in September: frequently asked questions

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

Expect pleasant weather across Cornwall, the United Kingdom in September. The popular destination of Newquay averages 19°C (66°F) by day and 13°C (55°F) at night during this summer month.

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

Newquay averages a daytime maximum of 19°C (66°F) in September, with overnight lows close to 13°C (55°F).

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

Not particularly. Newquay averages just 70 mm (2.8 in) of rain in September, making it a mostly dry month for Cornwall, the United Kingdom.

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

In our opinion, September is a good time to visit Cornwall, the United Kingdom with overall pleasant weather in Newquay. It's worth noting that weather conditions might differ depending on the location you visit.

On average, the best time to visit Cornwall, the United Kingdom is in July and August with generally perfect weather in Newquay. In contrast, February, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Cornwall.

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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