Weymouth Weather in September

September is one of the perfect months to visit Weymouth, with daytime temperatures of 24°C (75°F) and lows of 13°C (55°F) at night. It is also the driest month of the year.

Rainfall in Weymouth in September

Clear skies and little rain are the norm this month. A great time to spend time outdoors. Past climate data indicates that roughly 8 days will see rain, totalling around 81 mm (3.2 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Weymouth in September

Weather in Weymouth is at its perfect in September. Highs reach 24°C (75°F), while nights settle around 13°C (55°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Weymouth in September

There are approximately 238 hours of sunshine this month, resulting in mostly clear days.

Wind Speed in Weymouth in September

Wind speeds average 5 m/s (10 knots) during September. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.

Average water temperature in September

The water temperature is 18°C (64°F). It's not warm, but most people find it perfectly fine for a swim once they're in.

If your ideal day consists of dry skies and pleasant temperatures, May, July, August and September typically offer the best circumstances for Weymouth.

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• January
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For a detailed overview over the year and the best time to visit the United States of America, check out our Weymouth's climate page.

Weymouth Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 24°C (75°F)  

Water Temperature 18°C (64°F) *  

Chance of Rain 27%  

Precipitation 81 mm (3.2 in)  

Rainy days 8 days  

Humidity 69% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 238 hours *  

Percentage Sunshine 63% *  

* Data from: Boston, the United States of America (17 KM, 11 Miles).

What to Wear in Weymouth in September

For Weymouth in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With water temperatures around 18°C (64°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Weymouth in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Weymouth's climate page.

More climate data for Weymouth

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Weymouth climate overview or explore weather in the United States of America.