Portland Weather in May
May in Portland typically sees daytime highs of 15°C (59°F) and nighttime lows of 10°C (50°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Portland in May
This month experiences about 13 days of rain according to historical data, averaging 60 mm (2.4 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Portland in May
In May, expect moderate temperatures in Portland, with highs of 15°C (59°F) and lows of 10°C (50°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows of 10°C (50°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Portland in May
The days are predominantly sunny, with an estimated total of around 208 hours of sunshine. Despite the cool temperatures, these sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.If you prefer enjoying temperate temperatures and rain-free days, August typically offers 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.
Check the conditions for any month of the year.
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 May
Min Temperature
10°C (50°F)
Max Temperature
15°C (59°F)
Chance of Rain
45%
Precipitation
60 mm (2.4 in)
Rainy days
13 days
Sunshine
208 hours *
Percentage Sunshine
*
Best Places in the United Kingdom in May
Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month. See all of the United Kingdom in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Portland in May
The weather can swing between comfortable and chilly in May, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Portland in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Portland's climate page.
See the full Portland climate overview or explore weather in the United Kingdom.
