Yosemite National Park is definitely worth a visit
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Lopez Island Weather in May
In Lopez Island, May brings moderate daytime temperatures around 17°C (63°F), with nights cooling to 7°C (45°F). Some rainfall is to be expected.
Rainfall in Lopez Island in May
Typically, you can expect about 11 days of rain this month, with 42 mm (1.7 in) on average. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Lopez Island in May
In May, Lopez Island gets moderate temperatures, with highs of 17°C (63°F). Nights cool to around 7°C (45°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 7°C (45°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Lopez Island in May
There are approximately 271 hours of sunshine this month, resulting in mostly clear days.For Lopez Island itself, June, July, August and September generally stand 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.
Lopez Island Temperature in May
Min Temperature
7°C (45°F)
Max Temperature
17°C (63°F)
Chance of Rain
37%
Precipitation
42 mm (1.7 in)
Rainy days
11 days
Sunshine
271 hours *
Percentage Sunshine
56% *
* Data from: Friday Harbor, the United States of America (10 KM, 6 Miles).
Lopez Island Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Lopez Island - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lopez Island typically stay consistent throughout May, with daily highs averaging around 17°C (63°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather records for Lopez Island in May
Browse day-by-day weather records for Lopez Island spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lopez Island historical weather extremes in May
Based on weather observations in Lopez Island between 1976 and 2026, these are the recorded extremes during May.
- On May 28, 1983, temperatures climbed to 31°C (88°F), marking the warmest May day on record.
- Lopez Island experienced its chilliest May day on May 4, 2002, reaching only 9°C (48°F).
- Lopez Island registered its coldest May night on May 23, 1987, with temperatures dropping to -6°C (21°F).
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Lopez Island in May
For Lopez Island in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Lopez Island in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Camping5/10 -
Outdoor sports10/10
Lopez Island 3-Day Forecast
More climate data for Lopez Island
See the full Lopez Island climate overview or explore weather in the United States of America.
Popular in May
Where to go in May - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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