When to plant in Bremerton, WA
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Bremerton, Washington — is derived from the closest NOAA station with complete climate normals.
Zone 8b means many perennials and even some tender shrubs overwinter in Bremerton, while your frost dates still decide when annuals go out.
Frost probability
BREMERTON · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Bremerton’s own odds, recorded at BREMERTON.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 13 | Apr 25 | Apr 7 | Oct 4 | Oct 27 | Nov 13 |
| 32°F | Apr 24 | Mar 29 | Mar 5 | Oct 26 | Nov 14 | Dec 1 |
| 28°F | Mar 27 | Feb 27 | Jan 24 | Nov 10 | Nov 30 | Dec 24 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Bremerton, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 32 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Bremerton planting FAQ
When is the last spring frost in Bremerton, WA?
Bremerton's average last spring frost falls near March 29 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Bremerton, WA?
Expect Bremerton's first fall frost near November 14 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Bremerton in?
Bremerton is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Bremerton?
There are roughly 230 frost-free days in Bremerton (a long growing season), running from the average last frost around March 29 to the first fall frost near November 14.
When should I plant tomatoes in Bremerton?
In Bremerton, start tomato seeds indoors around February 1–February 15, then transplant seedlings outdoors around April 5 once the danger of frost has passed.
Never miss a window in Bremerton
An email when it’s time to start seeds, transplant, and sow — timed to Bremerton’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Port Orchard · 6 km
- Silverdale · 14 km
- Bainbridge Island · 19 km
- Poulsbo · 23 km
- Gig Harbor · 24 km
- Artondale · 27 km
- White Center · 28 km
- Seattle · 29 km
Frost dates recorded at BREMERTON, 4 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Bremerton, WA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00450872. Retrieved from https://blissgarden.com/washington/bremerton.