Boothbay Harbor Weather in September

In Boothbay Harbor, September brings pleasant daytime temperatures around 20°C (68°F), with nights cooling to 11°C (52°F). Expect quite a bit of rainfall this month.

Rainfall in Boothbay Harbor in September

On average, there are about 9 days with rain during this month, averaging 90 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 Boothbay Harbor in September

The temperature in Boothbay Harbor in September is excellent. Daytime highs reach 20°C (68°F), with nights dropping to 11°C (52°F). September is typically considered a summer month. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 11°C (52°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Boothbay Harbor in September

There are approximately 228 hours of sunshine this month, resulting in mostly clear days.

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

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 Boothbay Harbor's climate page.

Boothbay Harbor Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 30%  

Precipitation 90 mm (3.5 in)  

Rainy days 9 days  

Humidity 77% *  

Sunshine 228 hours *  

Percentage Sunshine 61% *  

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

What to Wear in Boothbay Harbor 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Boothbay Harbor in September

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

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 Boothbay Harbor's climate page.

More climate data for Boothbay Harbor

Temperature Rainfall Sunshine Humidity

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