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Weymouth Weather in September
September in Weymouth sees daytime temperatures around 19°C (66°F) and lows of 13°C (55°F) at night. With around 69 mm (2.7 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Weymouth in September
The climate data from previous years indicates about 13 days of rain, averaging 69 mm (2.7 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Weymouth in September
Temperatures in Weymouth in September top out at 19°C (66°F) and drop to 13°C (55°F) overnight. Experience the summer season in September. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Weymouth in September
The area enjoys a balanced 152 hours of sunlight, ensuring it's neither too overcast nor too sunny.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Weymouth.
Weymouth Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
19°C (66°F)
Chance of Rain
42%
Precipitation
69 mm (2.7 in)
Rainy days
13 days
Sunshine
152 hours *
Percentage Sunshine
*
* Data from: Salisbury, the United Kingdom (69 KM, 42 Miles).
Weymouth Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Weymouth - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Weymouth typically stay consistent throughout September, with daily highs averaging around 19°C (66°F). Nights are cool, with lows around 12°C (54°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Weymouth in September
Browse day-by-day weather records for Weymouth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Weymouth historical weather extremes in September
Our historical data for Weymouth spans 1976 to 2025, revealing these weather extremes.
- On September 7, 2023, temperatures climbed to 29°C (84°F), marking the warmest September day on record.
- The lowest daytime temperature in September was 13°C (55°F), recorded on September 15, 1986.
- The coldest night in September in Weymouth was on September 20, 1986, with a minimum of 2°C (36°F).
- The heaviest September precipitation occurred on September 9, 2002, when 36 mm (1.4 in) of precipitation fell.
Best Places in the United Kingdom in September
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in September →
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).
What to Wear in Weymouth in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Weymouth in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling10/10 -
Walking10/10 -
Barbeque7/10 -
Camping8/10 -
Outdoor sports10/10
Weymouth 3-Day Forecast
More climate data for Weymouth
See the full Weymouth climate overview or explore weather in the United Kingdom.
Popular in September
Where to go in September - average daytime high across popular destinations.
London
20°C (68°F) Bath19°C (66°F) Torquay19°C (66°F) Manchester
18°C (64°F) York19°C (66°F) Edinburgh17°C (63°F) Blackpool17°C (63°F) Glasgow17°C (63°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Hike the South West Coast Path
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