Saint Helens Weather in May

Thinking of visiting Saint Helens in May? Expect pleasant temperatures reaching 20°C (68°F) during the day, dropping to 7°C (45°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Saint Helens in May

Based on our climate data of the past 30 years, about 14 days of rain are anticipated, with 67 mm (2.6 in) on average. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Saint Helens in May

Saint Helens in May has perfect weather. Days reach 20°C (68°F) and nights cool to 7°C (45°F). Conditions are often most pleasant around the middle of the day. With lows around 7°C (45°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Saint Helens in May

Expect sunny days throughout the month, with an estimated 276 hours of sunshine. This makes it a pleasant time to visit Saint Helens.

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

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• 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 Saint Helens's climate page.

Saint Helens Temperature in May

Min Temperature 7°C (45°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 45%  

Precipitation 67 mm (2.6 in)  

Rainy days 14 days  

Humidity 69% *  

Sunshine 276 hours *  

Percentage Sunshine *  

* Data from: Portland, the United States of America (33 KM, 20 Miles).

What to Wear in Saint Helens in May

Comfortable temperatures call for an easy wardrobe in May. 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. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Saint Helens in May

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

Cycling

10/10

Walking

10/10

Barbeque

8/10

Camping

4/10

Outdoor sports

10/10

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 Saint Helens's climate page.

More climate data for Saint Helens

Temperature Rainfall Sunshine Humidity

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