Dorset Weather in September

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

Considering a trip to Dorset, the United Kingdom this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Dorset in September

Dorset, the United Kingdom is a region in the United Kingdom. September in Dorset generally has pleasant temperatures, with moderate precipitation. It's the height of summer.

Temperatures

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

For a closer look at conditions across Dorset, the United Kingdom, refer to the map below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Uplyme with an average of 58 mm (2.3 in) to moderate rainfall in Christchurch with 78 mm (3.1 in).

Average sunshine

Most areas see decent amounts of sunshine this month. Bournemouth gets around 149 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

Explore Dorset by month

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

Best Places to Visit in Dorset in September

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

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 Dorset

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

Temperature range in Dorset (September)

Precipitation variation in Dorset (September)

Bournemouth

In September Bournemouth 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
Max temperature
21°C (70°F)
19°C (66°F)
16°C (61°F)
Min temperature
15°C (59°F)
13°C (55°F)
11°C (52°F)
Monthly sun hours
208 hours
149 hours
113 hours
Monthly rainfall
74 mm (2.9 in)
71 mm (2.8 in)
105 mm (4.1 in)
Monthly rainy days
11 days
12 days
15 days
Weather conditions

Weymouth

In September Weymouth 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
Max temperature
20°C (68°F)
19°C (66°F)
16°C (61°F)
Min temperature
15°C (59°F)
13°C (55°F)
11°C (52°F)
Monthly sun hours
210 hours
152 hours
115 hours
Monthly rainfall
74 mm (2.9 in)
69 mm (2.7 in)
106 mm (4.2 in)
Monthly rainy days
12 days
13 days
15 days
Weather conditions

Poole

In September Poole 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
Max temperature
21°C (70°F)
19°C (66°F)
16°C (61°F)
Min temperature
15°C (59°F)
13°C (55°F)
10°C (50°F)
Monthly sun hours
210 hours
152 hours
115 hours
Monthly rainfall
69 mm (2.7 in)
63 mm (2.5 in)
93 mm (3.7 in)
Monthly rainy days
11 days
13 days
15 days
Weather conditions

Lyme Regis

In September Lyme Regis 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
Max temperature
21°C (70°F)
19°C (66°F)
16°C (61°F)
Min temperature
14°C (57°F)
12°C (54°F)
9°C (48°F)
Monthly sun hours
170 hours
150 hours
104 hours
Monthly rainfall
68 mm (2.7 in)
58 mm (2.3 in)
82 mm (3.2 in)
Monthly rainy days
13 days
13 days
16 days
Weather conditions

Swanage

In September Swanage generally has pleasant temperatures with maximum daytime temperatures around 19°C (66°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
Max temperature
20°C (68°F)
19°C (66°F)
16°C (61°F)
Min temperature
15°C (59°F)
14°C (57°F)
12°C (54°F)
Monthly sun hours
208 hours
149 hours
113 hours
Monthly rainfall
70 mm (2.8 in)
71 mm (2.8 in)
110 mm (4.3 in)
Monthly rainy days
11 days
13 days
15 days
Weather conditions

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

Popular cities in September

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

City Weather Day temp Night temp Rainfall
Bournemouth 19°C (66°F) 13°C (55°F) 71 mm (2.8 in)
Weymouth 19°C (66°F) 13°C (55°F) 69 mm (2.7 in)
Poole 19°C (66°F) 13°C (55°F) 63 mm (2.5 in)
Lyme Regis 19°C (66°F) 12°C (54°F) 58 mm (2.3 in)
Swanage 19°C (66°F) 14°C (57°F) 71 mm (2.8 in)
Bridport 20°C (68°F) 12°C (54°F) 60 mm (2.4 in)

Dorset weather in September: frequently asked questions

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

In September, Dorset, the United Kingdom generally has pleasant weather conditions. Bournemouth sees daytime temperatures near 19°C (66°F), with nights cooling to roughly 13°C (55°F).

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

In Bournemouth, the average daytime high in September is 19°C (66°F), while nighttime temperatures drop to around 13°C (55°F).

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

Rain is generally moderate to light in Dorset, the United Kingdom during September, with Bournemouth averaging close to 71 mm (2.8 in).

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

Given the typically pleasant weather conditions in Bournemouth, September might be a good time to visit Dorset, the United Kingdom. However, the weather conditions may vary depending on your destination.

Generally speaking, the best visiting conditions can be found in July and August offering mostly perfect weather in Bournemouth. On the other hand, the weather in January, February, November and December tend to be poor.

Interested in more climate information?

We have much more information about the climate in Dorset.

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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