Climate and average weather in Bremerton
In Bremerton, the summers are warm, fairly dry, and mostly clear and the winters are cold, snowy, and mostly cloudy.
Over the course of the year, the temperature in Bremerton typically varies from 39°F to 74°F, and is rarely below 33°F or above 83°F. August is the hottest month of the year, while December is the coldest.
Based on the travel score, the best time of year to visit Bremerton for warm-weather activities is from late June to mid September.
- Hottest
- Aug
- 74°
- Coldest
- Dec
- 39°
- Wettest
- Nov
- 7.5 in
- Driest
- Jul
- 1.3 in
- Rain / yr
- 50.8 in
- 159 wet days
- Daylight
- 8.2–15.8 h
- shortest–longest
- Elevation
- 36 ft
- 47.6°N
- Clearest
- Jul
- 46% cloud
Bremerton is city in Kitsap County, Washington, United States.
- Density
- 537/km²
- people per km²
- Founded
- 1891
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Bremerton weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late June to mid September.
Temperature through the year
Daily average highs and lows in Bremerton, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 3.1 months, from June 19 to September 19, with daily high temperatures above 67°F. The hottest month of the year in Bremerton is August, with an average high of 74°F and low of 60°F.
The cool season lasts 3.9 months, from November 15 to March 13, with daily high temperatures below 51°F. The coldest month of the year in Bremerton is December, with an average low of 39°F and high of 45°F.
Days typically run about 10°F warmer than nights, with the widest day–night swing (around 14°F) in July.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 46 | 48 | 51 | 56 | 62 | 67 | 73 | 74 | 68 | 59 | 50 | 45 |
| Avg low (°F) | 39 | 40 | 41 | 44 | 50 | 55 | 59 | 60 | 56 | 50 | 44 | 39 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| Jan | 46 | 39 |
| Feb | 48 | 40 |
| Mar | 51 | 41 |
| Apr | 56 | 44 |
| May | 62 | 50 |
| Jun | 67 | 55 |
| Jul | 73 | 59 |
| Aug | 74 | 60 |
| Sep | 68 | 56 |
| Oct | 59 | 50 |
| Nov | 50 | 44 |
| Dec | 45 | 39 |
Average hourly temperature in Bremerton
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on August afternoons, near 74°F, and coldest before dawn in December, near 39°F.
Bremerton weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 46° / 39° | 6.7 | 17.8 | 2.8 | 8.7 | 0.9 |
| Feb | 48° / 40° | 4.6 | 14.6 | 1.8 | 9.9 | 1.4 |
| Mar | 51° / 41° | 5.3 | 17 | 1 | 11.6 | 2.1 |
| Apr | 56° / 44° | 4.0 | 14.7 | 0.2 | 13.3 | 3.2 |
| May | 62° / 50° | 2.8 | 12.2 | 0 | 14.9 | 5.0 |
| Jun | 67° / 55° | 2.2 | 9.7 | 0 | 15.7 | 6.1 |
| Jul | 73° / 59° | 1.3 | 6.1 | 0 | 15.4 | 7.7 |
| Aug | 74° / 60° | 1.4 | 6.1 | 0 | 14.1 | 7.8 |
| Sep | 68° / 56° | 2.5 | 9.7 | 0 | 12.4 | 6.5 |
| Oct | 59° / 50° | 5.1 | 15.1 | 0 | 10.6 | 4.0 |
| Nov | 50° / 44° | 7.5 | 18.2 | 0.7 | 9.1 | 1.9 |
| Dec | 45° / 39° | 7.4 | 17.9 | 2.4 | 8.3 | 0.9 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Bremerton gets about 50.8 in of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.
The wetter season lasts 6.7 months, from around Oct 9 to May 1, peaking in November at about 61% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 30.
November is the wettest month by volume, with 7.5 in over about 18 wet days; July is the driest, with 1.3 in. Some of the cold-season precipitation falls as snow.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 57 | 53 | 54 | 49 | 39 | 33 | 19 | 20 | 33 | 49 | 59 | 59 |
| Rain days | 18 | 15 | 17 | 15 | 12 | 10 | 6 | 6 | 10 | 15 | 18 | 18 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 57 | 18 |
| Feb | 53 | 15 |
| Mar | 54 | 17 |
| Apr | 49 | 15 |
| May | 39 | 12 |
| Jun | 33 | 10 |
| Jul | 19 | 6 |
| Aug | 20 | 6 |
| Sep | 33 | 10 |
| Oct | 49 | 15 |
| Nov | 59 | 18 |
| Dec | 59 | 18 |
Monthly rainfall
Over a full year, Bremerton collects about 50.8 in of rain across 159 wet days — roughly 4.2 in in an average month.
It doesn’t fall evenly. November is the wettest month with 7.5 in, while July is the driest at just 1.3 in. The three wettest months alone bring about 43% of the year’s total, and some of the cold-season precipitation falls as snow.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (in) | 6.7 | 4.6 | 5.3 | 4.0 | 2.8 | 2.2 | 1.3 | 1.4 | 2.5 | 5.1 | 7.5 | 7.4 |
| Rain days | 18 | 15 | 17 | 15 | 12 | 10 | 6 | 6 | 10 | 15 | 18 | 18 |
| Snow days | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| Rainfall (in) | Rain days | Snow days | |
|---|---|---|---|
| Jan | 6.7 | 18 | 3 |
| Feb | 4.6 | 15 | 2 |
| Mar | 5.3 | 17 | 1 |
| Apr | 4.0 | 15 | 0 |
| May | 2.8 | 12 | 0 |
| Jun | 2.2 | 10 | 0 |
| Jul | 1.3 | 6 | 0 |
| Aug | 1.4 | 6 | 0 |
| Sep | 2.5 | 10 | 0 |
| Oct | 5.1 | 15 | 0 |
| Nov | 7.5 | 18 | 1 |
| Dec | 7.4 | 18 | 2 |
Snow in Bremerton
Average snowy days through the year, the snow-season span, and estimated snowfall — for ski trips and the perennial 'will there be snow at Christmas?' question.
Bremerton averages about 9 snowy days a year. Snow season runs roughly Nov 15 to Apr 2 — about 4.6 months.
January is snowiest, with roughly 3 days of snow and an estimated 5 in of snowfall. Over the year that adds up to an estimated 17 in of snow.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Snow days | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| Snowfall (in) | 5 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
| Snow days | Snowfall (in) | |
|---|---|---|
| Jan | 3 | 5 |
| Feb | 2 | 4 |
| Mar | 1 | 2 |
| Apr | 0 | 0 |
| May | 0 | 0 |
| Jun | 0 | 0 |
| Jul | 0 | 0 |
| Aug | 0 | 0 |
| Sep | 0 | 0 |
| Oct | 0 | 0 |
| Nov | 1 | 1 |
| Dec | 2 | 5 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Bremerton, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around June 19 and lasts for 3.9 months, ending around October 14. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 61% of the time on average.
The cloudier part of the year begins around October 15 and lasts for 6.4 months, ending around April 26. The cloudiest month is December, when it is overcast or mostly cloudy 83% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 22 | 28 | 26 | 30 | 33 | 36 | 58 | 61 | 54 | 37 | 25 | 17 |
| Cloudier (%) | 78 | 72 | 74 | 70 | 67 | 64 | 42 | 39 | 46 | 63 | 75 | 83 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 22 | 78 |
| Feb | 28 | 72 |
| Mar | 26 | 74 |
| Apr | 30 | 70 |
| May | 33 | 67 |
| Jun | 36 | 64 |
| Jul | 58 | 42 |
| Aug | 61 | 39 |
| Sep | 54 | 46 |
| Oct | 37 | 63 |
| Nov | 25 | 75 |
| Dec | 17 | 83 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 17, brings about 15 h 48 min of light; the shortest, around December 16, only 8 h 12 min — a swing of roughly 7 h 36 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 8.7 | 9.9 | 11.6 | 13.3 | 14.9 | 15.7 | 15.4 | 14.1 | 12.4 | 10.6 | 9.1 | 8.3 |
| Sunrise (AM) | 8:01 | 7:27 | 6:33 | 5:29 | 4:40 | 4:18 | 4:34 | 5:12 | 5:55 | 6:38 | 7:25 | 7:59 |
| Sunset (PM) | 4:39 | 5:23 | 6:07 | 6:52 | 7:34 | 8:03 | 7:59 | 7:17 | 6:15 | 5:13 | 4:27 | 4:14 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 8.7 | 8:01 | 4:39 |
| Feb | 9.9 | 7:27 | 5:23 |
| Mar | 11.6 | 6:33 | 6:07 |
| Apr | 13.3 | 5:29 | 6:52 |
| May | 14.9 | 4:40 | 7:34 |
| Jun | 15.7 | 4:18 | 8:03 |
| Jul | 15.4 | 4:34 | 7:59 |
| Aug | 14.1 | 5:12 | 7:17 |
| Sep | 12.4 | 5:55 | 6:15 |
| Oct | 10.6 | 6:38 | 5:13 |
| Nov | 9.1 | 7:25 | 4:27 |
| Dec | 8.3 | 7:59 | 4:14 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Bremerton averages about 7 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 16 days.
The sunnier stretch runs 3.6 months, from around Jun 23 to Oct 11. The sunniest month is July, with roughly 13 sunny days (mixed).
The greyest month is December, down near 3 sunny days — about 76% fewer than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 4 | 5 | 4 | 5 | 5 | 6 | 13 | 14 | 11 | 7 | 4 | 3 |
| Sky | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Mixed | Mixed | Mixed | Gloomy | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 4 | Gloomy |
| Feb | 5 | Gloomy |
| Mar | 4 | Gloomy |
| Apr | 5 | Gloomy |
| May | 5 | Gloomy |
| Jun | 6 | Gloomy |
| Jul | 13 | Mixed |
| Aug | 14 | Mixed |
| Sep | 11 | Mixed |
| Oct | 7 | Gloomy |
| Nov | 4 | Gloomy |
| Dec | 3 | Gloomy |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Bremerton, the air stays dry or comfortable essentially all year. Even in August, the muggiest month, it feels humid or worse only about 13% of the time — humidity is not something you need to plan around here.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 98 | 82 | 40 | 32 | 62 | 93 | 100 | 100 |
| Comfortable (%) | 0 | 0 | 0 | 0 | 2 | 17 | 52 | 55 | 34 | 7 | 0 | 0 |
| Humid (%) | 0 | 0 | 0 | 0 | 0 | 1 | 8 | 13 | 4 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| Jan | 100 | 0 | 0 |
| Feb | 100 | 0 | 0 |
| Mar | 100 | 0 | 0 |
| Apr | 100 | 0 | 0 |
| May | 98 | 2 | 0 |
| Jun | 82 | 17 | 1 |
| Jul | 40 | 52 | 8 |
| Aug | 32 | 55 | 13 |
| Sep | 62 | 34 | 4 |
| Oct | 93 | 7 | 0 |
| Nov | 100 | 0 | 0 |
| Dec | 100 | 0 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in Bremerton is typically calm, near 5 mph, and varies little with the seasons.
The windier part of the year lasts 6.3 months, from around Oct 8 to Apr 17. The windiest month is November, averaging about 6 mph (calm).
The calmer part of the year runs from around Apr 18 to Oct 7, with August the calmest month at about 4 mph.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 5 | 6 | 6 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| Jan | 5 | calm |
| Feb | 5 | calm |
| Mar | 5 | calm |
| Apr | 5 | calm |
| May | 4 | calm |
| Jun | 4 | calm |
| Jul | 4 | calm |
| Aug | 4 | calm |
| Sep | 4 | calm |
| Oct | 5 | calm |
| Nov | 6 | calm |
| Dec | 6 | calm |
Hazard calendar for Bremerton
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Bremerton's rainy season runs October–April, when most of the year's rain falls.
Best time to visit Bremerton
To characterize how pleasant the weather is in Bremerton throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around early September, Bremerton is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 64°F and 82°F. Based on this score, the best time of year to visit Bremerton for general outdoor tourist activities is from late June to mid September, with a peak score in the last week of July.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 0.9 | 1.4 | 2.1 | 3.2 | 5.0 | 6.1 | 7.7 | 7.7 | 6.5 | 4.0 | 1.9 | 0.9 |
| Rating | poor | poor | poor | poor | fair | good | ideal | ideal | good | fair | poor | poor |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 0.9 | poor |
| Feb | 1.4 | poor |
| Mar | 2.1 | poor |
| Apr | 3.2 | poor |
| May | 5.0 | fair |
| Jun | 6.1 | good |
| Jul | 7.7 | ideal |
| Aug | 7.7 | ideal |
| Sep | 6.5 | good |
| Oct | 4.0 | fair |
| Nov | 1.9 | poor |
| Dec | 0.9 | poor |
The beach/pool score favors clear, rainless days with daytime highs between 75°F and 93°F. Based on this score, the best time of year to visit Bremerton for hot-weather activities is from mid July to late August, with a peak score in the first week of August.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Bremerton, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around August (highs near 74°F), the essentials are light clothes and sun protection. In the cold season around December (highs near 45°F), pack a warm layer, a heavy coat and rain gear.
In August, Bremerton sees daytime highs around 74°F and nights near 60°F. Worth packing: light clothes and sun protection. About 6 days see rain.
Sea temperature near Bremerton
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
The sea at the nearest coast (about 40 mi away) is warmest in August at about 53°F and coldest in February near 46°F.
The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 46 | 46 | 47 | 48 | 50 | 52 | 53 | 53 | 53 | 50 | 49 | 47 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 46 | Bracing |
| Feb | 46 | Bracing |
| Mar | 47 | Bracing |
| Apr | 48 | Bracing |
| May | 50 | Bracing |
| Jun | 52 | Bracing |
| Jul | 53 | Bracing |
| Aug | 53 | Bracing |
| Sep | 53 | Bracing |
| Oct | 50 | Bracing |
| Nov | 49 | Bracing |
| Dec | 47 | Bracing |
UV index (midday) in Bremerton by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Bremerton peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 4 | 5 | 7 | 6 | 8 | 6 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Average hourly UV index in Bremerton
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in July the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 0 | 0 | 3.5 | 5.5 | 7.5 | 7 | 8.5 | 7 | 4 | 0 | 0 | 0 |
| UV ≥ 6 (h/day) | 0 | 0 | 0 | 0 | 3 | 0.5 | 5 | 1 | 0 | 0 | 0 | 0 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 0 | 0 |
| Feb | 0 | 0 |
| Mar | 3.5 | 0 |
| Apr | 5.5 | 0 |
| May | 7.5 | 3 |
| Jun | 7 | 0.5 |
| Jul | 8.5 | 5 |
| Aug | 7 | 1 |
| Sep | 4 | 0 |
| Oct | 0 | 0 |
| Nov | 0 | 0 |
| Dec | 0 | 0 |
Growing season
Bremerton is mild enough that a frost-free day stays more likely than not even in midwinter.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 95 | 97 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 96 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 95 | 0 |
| Feb | 97 | 0 |
| Mar | 99 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 99 | 0 |
| Dec | 96 | 0 |
Growing degree days
Growing degree days tally heat above 50°F: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Bremerton banks about 2,045 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around August.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°F·days) | 0 | 0 | 0 | 19 | 185 | 322 | 495 | 520 | 369 | 135 | 0 | 0 |
| Growing degree days (°F·days) | |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 0 |
| Apr | 19 |
| May | 185 |
| Jun | 322 |
| Jul | 495 |
| Aug | 520 |
| Sep | 369 |
| Oct | 135 |
| Nov | 0 |
| Dec | 0 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Bremerton receives about 3.5 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 0.8 and 6.2 kWh/m².
The brighter stretch of the year lasts 6.0 months, from around Mar 25 to Sep 24. The brightest month is July, averaging about 6.2 kWh/m² (intense).
The dimmest month is December, down near 0.9 kWh/m² — roughly 86% less than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 1.0 | 1.9 | 3.0 | 4.4 | 5.5 | 5.8 | 6.2 | 5.4 | 4.0 | 2.3 | 1.2 | 0.9 |
| Level | Dim | Dim | Moderate | Bright | Bright | Bright | Intense | Bright | Bright | Moderate | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 1.0 | Dim |
| Feb | 1.9 | Dim |
| Mar | 3.0 | Moderate |
| Apr | 4.4 | Bright |
| May | 5.5 | Bright |
| Jun | 5.8 | Bright |
| Jul | 6.2 | Intense |
| Aug | 5.4 | Bright |
| Sep | 4.0 | Bright |
| Oct | 2.3 | Moderate |
| Nov | 1.2 | Dim |
| Dec | 0.9 | Dim |
Where is Bremerton?
Bremerton sits at 47.6°N, 122.6°W, 36 ft above sea level, in United States. The nearest listed city is Silverdale, 6.2 mi away.
Topography around Bremerton
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Bremerton.
Within 2 miles, the terrain around Bremerton has only modest variations in elevation — a maximum elevation change of 449 ft around an average of 82 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,778 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,589 ft.
The land around Bremerton is covered by water (40%), trees (28%) and artificial surfaces (28%) within 2 miles, trees (64%) and water (26%) within 10 miles, and trees (71%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Bremerton (47.5673°, -122.6326°, elevation 36 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).