Winthrop Weather in September

In Winthrop, September brings high daytime temperatures around 23°C (73°F), with nights cooling to 15°C (59°F). It is the driest month of the year, with minimal rainfall.

Rainfall in Winthrop in September

This month is perfect for exploring, with the driest conditions of the year. You can typically expect 9 days of rain this month, averaging around 76 mm (3 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Winthrop in September

September is a perfect month in Winthrop, with 23°C (73°F) during the day and 15°C (59°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 15°C (59°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 Winthrop in September

Enjoy a sunny month with about 238 hours of sunshine, the clear skies make Winthrop even more beautiful.

Wind Speed in Winthrop in September

September has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

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.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. August and September typically offer the best weather for Winthrop.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• July
• August

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• October
• November
• December

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

Winthrop Temperature in September

Min Temperature 15°C (59°F)  

Max Temperature 23°C (73°F)  

Water Temperature 18°C (64°F) *  

Chance of Rain 30%  

Precipitation 76 mm (3 in)  

Rainy days 9 days  

Humidity 69% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 238 hours *  

Percentage Sunshine 63% *  

* Data from: Boston, the United States of America (4 KM, 2 Miles).

What to Wear in Winthrop in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. The water temperature sits at about 18°C (64°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Winthrop 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 Winthrop's climate page.

More climate data for Winthrop

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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