Skip to content
Voykit
Draft data. Times, fares and step counts are desk estimates awaiting field checks. How we verify
Source checked
A source and a date are on record: we read it from an official or published page. Not yet confirmed on the ground.
Field checked
Someone checked it on the ground, with the date shown.
Plan calculated
Worked out by Voykit from its own data (times, distances, budgets). A calculation, not a measurement.

Unknown times stay unknown. How we verify

Major city · United States

Mercer Island

Treat Mercer Island as a day‑trip from Seattle or Bellevue; no hotels, so stay overnight elsewhere and spend 4–6 h exploring parks and light‑rail.

Not yet checkedSourcesWhat these labels mean

Mercer Island is a residential island in Lake Washington with easy I‑90 road access and a Sound Transit light‑rail stop. With no hotels, visitors typically spend a half‑day to a full day visiting parks, the village centre and taking the train, then return to Seattle or Bellevue for accommodation.

basic guide: no trip line yet
More
3 pages, for the metro and roaming-off days
Map
Google Maps Apple Maps Street View
More ways in
Print / PDF guide
Local time, weather, currency, airports
Weather
see forecast
Currency
USD
Best months
Apr–Oct
avoid Nov–Mar (rainy, cooler)
Airport
SEA
Nights
1

Not a trip line yet

This is a basic guide for Mercer Island: no airport-to-bed path, walking clusters or day plans yet. Fares and schedules here are unverified. What this page does cover
Rules in force · 7Crossing between the US, Canada and Mexico by land needs …Cannabis is legal in Canada and in many US states, but ta…
  • North America ↗Crossing between the US, Canada and Mexico by land needs your passport even on a day trip; rental cars need the company's written permission to cross, and most US and Canadian rental insurance stops at the Mexican border.
  • North America ↗Cannabis is legal in Canada and in many US states, but taking any amount across the US, Canadian or Mexican border is a federal crime — including edibles and vapes.
  • North America ↗The busiest US and Canadian national parks need timed-entry, campsite or lodge reservations in summer; release dates are months ahead.
  • United States ↗Check whether you need an ESTA (Visa Waiver Program) or a visa on the official CBP and State Department sites; apply only through esta.cbp.dhs.gov, not third-party sites, and allow time before you book.
  • United States ↗Several popular national parks use timed-entry or vehicle reservations in peak season; check each park's page on nps.gov and book on recreation.gov before fixing your dates.
  • United States ↗Medical care is very expensive for visitors; buy travel insurance with high medical cover before you fly.
  • United States ↗Tipping is expected: about 15–20% at sit-down restaurants and bars, and a tip for taxis, hotel staff and guides.

Entry rules depend on your passport. Full visa guide

Checking your follows…
What is in this basic guide9 covered · 4 not yet ▾

Not in this guide yet

  • Walking areas with bag rules
  • Day plans checked against opening hours
  • Airport-to-bed timings and the last safe connection
  • Field-checked times and prices
Emergency numbers for Mercer Island911 ▾
  • Police/Fire/Ambulance911

Tap a number to call from your phone. These are the numbers listed in this guide; a row marked check has not been verified.

EssentialsQuick answers and what things cost

Essentials

Quick answers and what things cost

Quick answers

The questions people ask first about Mercer Island, one line each. Tap a card for the full answer.

Show all 12 answers
DecideWhat it is known for, and when the weather works

Decide

What it is known for, and when the weather works

At a glance

What the city is known for, how you fly in, and where to find the phrases.

Lake Washington viewsLuther Burbank ParkAubrey Davis (Lid) ParkMercer Village Shopping Center
Airports
SEA Seattle–Tacoma International Airport

Best months at a glance

From the guide's best and avoid lists

  1. Jan

    Avoid

    8°C (46°F)

  2. Feb

    Avoid

    9°C (48°F)

  3. Mar

    Avoid

    12°C (54°F)

  4. Apr

    Best

    15°C (59°F)

  5. May

    Best

    18°C (64°F)

  6. Jun

    Best

    22°C (72°F)

  7. Jul

    Best

    25°C (77°F)

  8. Aug

    Best

    25°C (77°F)

  9. Sep

    Best

    22°C (72°F)

  10. Oct

    Best

    17°C (63°F)

  11. Nov

    Avoid

    11°C (52°F)

  12. Dec

    Avoid

    8°C (46°F)

Best: Apr–Oct. Avoid: Nov–Mar. Month by month →

Warmest Jul (25°C (77°F)), coolest Jan (2°C (36°F) low), wettest Jan (12 rain days), driest Jul (4). Averages, not a forecast.

Weather and climate

Forecast from Open-Meteo · averages rounded

Mercer Island: next 7 days

Loading forecast…

Forecast: Open-Meteo (CC BY 4.0), model data for this point.

Air quality

Loading…

Model estimate (CAMS via Open-Meteo), not a street-level station; readings near busy roads run higher.

Jan

8°C (46°F)

2°C (36°F)

12 rd

Feb

9°C (48°F)

2°C (36°F)

10 rd

Mar

12°C (54°F)

4°C (39°F)

9 rd

Apr

15°C (59°F)

6°C (43°F)

7 rd

May

18°C (64°F)

9°C (48°F)

6 rd

Jun

22°C (72°F)

12°C (54°F)

5 rd

Jul

25°C (77°F)

14°C (57°F)

4 rd

Aug

25°C (77°F)

14°C (57°F)

5 rd

Sep

22°C (72°F)

11°C (52°F)

6 rd

Oct

17°C (63°F)

8°C (46°F)

8 rd

Nov

11°C (52°F)

4°C (39°F)

10 rd

Dec

8°C (46°F)

2°C (36°F)

12 rd

High / low, both scales · rd = rain days

Arrive & moveAirports are listed under At a glance; this is how to move once you are in

Arrive & move

Airports are listed under At a glance; this is how to move once you are in

Getting around

Drive via I‑90 (exits 7A/7B), or use Sound Transit Link 2 Line (flat $3 adult fare) and King County Metro DART 204 bus (free for youth). Walk between parks.

See & doDay-trips, door to door

See & do

Day-trips, door to door

Day-trips

Door-to-door, not ride time

Lake Washington shoreline walk

go

Door to door: ~1 h

Walk or bike from Mercer Village; 2–3 km (1.2–1.9 mi) each way

Flat, easy trail; bring water.

Eat & sleepWhich area to sleep in

Eat & sleep

Which area to sleep in

Where to sleep

Areas, not hotels: pick the one that fits your arrival time and plans.

Seattle or Bellevue hotels

No hotels on Mercer Island; drive or light‑rail 10–15 min to nearby city.

PracticalWhat a day costs, what to watch out for, and the pocket card

Practical

What a day costs, what to watch out for, and the pocket card

Cost per day

2026 estimate, excluding the bed unless stated
Budget
$30–$50 excl. transport
Mid
$50–$80 excl. transport
High
$80+ excl. transport

Trip budget

2026 estimate · converts to your currency
No on‑island lodging1 × 1 night × US$0US$0
Food, local transport, entries1 × 1 day × US$30US$30
Trip total≈ US$30 per person per day, bed includedUS$30

stay in Seattle/Bellevue

2026 estimate; flights excluded. Your choices stay in this browser.

Prices of common things

Coffee (café)$2–$4
Lunch (sandwich or salad)$8–$12
Bike‑share ride (30 min)$3
Light‑rail adult fare$3
Parking (2 h)$5

2026 estimate; check locally.

Watch out

Safety

Mercer Island is a low‑crime residential area; typical city safety applies, watch your bike and car in winter rain.
  • Last light‑rail trains run around midnight; plan return before then.
  • Parking at the north P&R can fill quickly on weekends.
  • No overnight lodging on the island; book Seattle/Bellevue stay in advance.

Emergency numbers

Police/Fire/Ambulance
911

Pocket card

One page · print or save as PDF

Fill in, then print or save as PDF

Stays in this browser only; nothing is sent anywhere.

Mercer IslandMercer Island

Pocket card · Voykit

My bed tonight

—

—

—

To this address, pleaseTo this address, please

Emergency

  • Police/Fire/Ambulance911

Embassy

US citizens need no visa for short visits; see /united-states/visa-requirements.

My embassy: —

Fare anchors (2026 estimate)

  • I‑90 Seattle ↔ Mercer Island (car): about $5–$7 toll each way (check)
  • Sound Transit Link 2 Line: $3 adult flat fare, trains every 8–15 min 5:00‑midnight
  • King County Metro DART 204: $2.50 round‑trip (check)

Say or show

  • Excuse me / Sorry — Excuse me / Sorry (Excuse me)
  • Thank you — Thank you (Thank you)
  • Where is the restroom? — Where is the restroom? (Where is the restroom?)
Deep diveWhat this guide covers so far, and its sources

Deep dive

What this guide covers so far, and its sources

Not a trip line yet

This is a basic guide: no airport-to-bed contract, walking clusters or day plans are published for Mercer Island. Airport, fare and schedule details are unverified; check the operators before you fly.

What we know, and what is coming

On this page

  1. Best months: Apr–Oct · avoid Nov–Mar (rainy, cooler) · month by month →
  2. 1 airport and 1 area to sleep in
  3. Weather: a 7-day forecast and monthly averages
  4. Cost per day in 3 bands
  5. 1 day-trips, door to door
  6. 3 things to watch out for, with emergency numbers

Coming as the guide grows

  1. Add a Light Rail day‑pass ($3) for unlimited rides on Mercer Island.
  2. Consider a bike‑share membership for park loops.

Meanwhile

Back to United States

Sources

Ask about Mercer Island

Loading…

Was this useful?