Plymouth Weather in September

September in Plymouth typically sees daytime highs of 23°C (73°F) and nighttime lows of 13°C (55°F). With the least rainfall of the year, it's a reliably dry month.

Rainfall in Plymouth in September

This month sees the least rain of the year, making it well suited for outdoor adventures. Analyzing past climate data, one can expect approximately 8 days of rain, averaging 89 mm (3.5 in). 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 Plymouth in September

Weather in Plymouth is at its perfect in September. Highs reach 23°C (73°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 Plymouth in September

The month enjoys around 238 hours of sunshine, creating mostly sunny days with good weather conditions.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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 Plymouth's climate page.

Plymouth Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 27%  

Precipitation 89 mm (3.5 in)  

Rainy days 8 days  

Humidity 69% *  

Sunshine 238 hours *  

Percentage Sunshine 63% *  

* Data from: Boston, the United States of America (54 KM, 33 Miles).

What to Wear in Plymouth in September

For Plymouth 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. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Plymouth 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 Plymouth's climate page.

More climate data for Plymouth

Temperature Rainfall Sunshine Humidity

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