Portland Weather in September

In Portland, September brings pleasant daytime temperatures around 19°C (66°F), with nights cooling to 14°C (57°F). Expect quite a bit of rainfall this month.

Rainfall in Portland in September

Based on our climate data of the past 30 years, about 13 days of rain are anticipated, with 73 mm (2.9 in) on average. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Portland in September

Portland in September gets highs of 19°C (66°F) during the day and drops to 14°C (57°F) at night. The summer season takes place during September. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to around 14°C (57°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 Portland in September

You can expect a moderate amount of sunlight, with approximately 152 hours. This means a pleasant mix of sun and overcast.

For Portland itself, August generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Portland's climate page.

Portland Temperature in September

Min Temperature 14°C (57°F)  

Max Temperature 19°C (66°F)  

Chance of Rain 42%  

Precipitation 73 mm (2.9 in)  

Rainy days 13 days  

Sunshine 152 hours *  

Percentage Sunshine *  

* Data from: Salisbury, the United Kingdom (74 KM, 46 Miles).

What to Wear in Portland 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. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Portland in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

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 Kingdom, check out our Portland's climate page.

More climate data for Portland

Temperature Rainfall Sunshine

See the full Portland climate overview or explore weather in the United Kingdom.