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Late spring · Weather & things to do

Olympic NP in May

Olympic NP warms up: highs climb to 48°F (9°C), from 40°F in April, with lows of 33°F (1°C) and about 3.4 in (86 mm) of rain.

Our comfort score puts it mid-table at 54/100, 5th of 12.

Olympic NP, Washington, United States
Avg high
48°F (9°C)
Avg low
33°F (1°C)
Rain
3.4 in (86 mm)
Humidity
81%
Cloud cover
70%
Daylight
~14 h 56 min
Comfort score
54/100 · Fair

What May feels like

It's cool, with highs near 48°F (9°C), so a proper jacket stays on most of the day.

After dark, temperatures fall to about 33°F (1°C).

Showers are part of the month, adding up to about 3.4 in (86 mm).

Olympic NP: May compared with the months either side
AprilMayJune
Avg high40°F4°C48°F9°C53°F11°C
Avg low28°F-2°C33°F1°C37°F3°C
Rain/snow5.4 in137 mm3.4 in86 mm2.5 in63 mm
Daylight13 h 24 min14 h 56 min15 h 47 min
Comfort335465

Plan around May

May sits mid-table; the best months are July & August.

What to pack for May

What to do in Olympic NP in May

A mixed month: these picks balance outdoor stops with indoor fallbacks.

Nearby in May

NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~664 m to Olympic NP's ~1,317 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.

Olympic NP in May: quick answers

Is May a good time to visit Olympic NP?

It's middling, scoring 54/100. The best months are July & August, at up to 85. Expect highs of 48°F (9°C) and 3.4 in (86 mm) of rain. Our Pacific Northwest route recommends Jun – Sep, so May is outside its suggested window.

How cold is Olympic NP in May?

Average highs are 48°F (9°C) and average lows 33°F (1°C), making it the 5th-warmest month by daytime highs.

Does it rain a lot in Olympic NP in May?

Some: about 3.4 in (86 mm) of rain falls across May on average, the 5th-driest month of the year. The annual total is about 73.9 in (1877 mm).

What should I pack for Olympic NP in May?

Bring insulated jacket (highs only 48°F), packable rain jacket or umbrella (about 3.4 in of rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).

Planning Olympic NP in May?

Share this May plan with your group, poll everyone on dates and keep the packing list in one place.

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