Oak Harbor in Fall
In fall (September, October and November), Oak Harbor sees average daytime highs around 54°F and overnight lows near 50°F, with 14.2 in of precipitation over about 41 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 61°F in early September to 47°F by late November. The sky is clear or mostly clear about 30% of the time across fall, and the air most often feels dry.
Fall is Oak Harbor's 2nd-best season to visit on our travel score. For the whole year in context, see Oak Harbor's year-round climate.
- Avg daytime high
- 54°F
- 2nd-warmest season
- Avg overnight low
- 50°F
- Precipitation
- 14.2 in
- 41 wet days
- Avg wind
- 8 mph
- Travel score
- 3.2
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Oak Harbor in Fall
Over the season highs ease from about 61°F in early September to 47°F by late November.
A typical fall day in Oak Harbor reaches about 54°F and drops to 50°F overnight. The warmest of the three months is September, the coolest November.
Oak Harbor weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 45° / 42° | 6.2 | 18.6 | 1.4 | 8.6 | 0.9 |
| Feb | 46° / 42° | 4.2 | 14.7 | 1.3 | 9.9 | 1.1 |
| Mar | 48° / 44° | 4.8 | 17.9 | 0.3 | 11.6 | 1.5 |
| Apr | 51° / 46° | 3.3 | 14 | 0 | 13.4 | 2.3 |
| May | 55° / 50° | 2.6 | 10.5 | 0 | 14.9 | 3.5 |
| Jun | 58° / 53° | 2.1 | 9.4 | 0 | 15.8 | 4.4 |
| Jul | 62° / 56° | 1.2 | 5.8 | 0 | 15.5 | 6.0 |
| Aug | 62° / 57° | 1.4 | 5.3 | 0 | 14.1 | 6.3 |
| Sep | 59° / 55° | 2.3 | 8.7 | 0 | 12.4 | 5.0 |
| Oct | 54° / 50° | 4.7 | 13.8 | 0 | 10.6 | 3.1 |
| Nov | 49° / 45° | 7.2 | 18.5 | 0.3 | 9 | 1.6 |
| Dec | 45° / 42° | 6.4 | 18.1 | 1.4 | 8.2 | 0.9 |
Cloud cover in Fall
The sky is clear or mostly clear about 30% of the time across fall.
Chance of precipitation in Fall
Oak Harbor gets around 14.2 in of rain and snow over 41 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 8 mph across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 12 min in early September to 8 h 24 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 2.5 kWh/m².
Hazard calendar for Oak Harbor
In fall, Oak Harbor overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Oak Harbor's rainy season runs October–April, when most of the year's rain falls.
Is fall a good time to visit Oak Harbor?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Oak Harbor.
What to pack for Oak Harbor in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Oak Harbor sees daytime highs around 54°F and nights near 50°F. Pack a warm layer and rain gear. About 41 days see rain.
Sea temperature near Oak Harbor in Fall
The nearest coast averages about 51°F across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 12 mi away) is warmest in August at about 54°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 | 54 | 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 | 54 | Bracing |
| Sep | 53 | Bracing |
| Oct | 50 | Bracing |
| Nov | 49 | Bracing |
| Dec | 47 | Bracing |
UV index in Oak Harbor in Fall
Clear-sky midday UV across fall averages around 3. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Oak Harbor peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 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 |
Where is Oak Harbor?
Oak Harbor sits at 48.3°N, 122.6°W, 95 ft above sea level, in United States. The nearest listed city is Anacortes, 15 mi away.
Topography around Oak Harbor
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Oak Harbor.
Within 2 miles, the terrain around Oak Harbor has only modest variations in elevation — a maximum elevation change of 354 ft around an average of 89 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 771 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 9,780 ft.
The land around Oak Harbor is covered by water (29%), trees (28%) and grassland (24%) within 2 miles, water (61%) and trees (23%) within 10 miles, and trees (53%) and water (34%) 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 Oak Harbor (48.2932°, -122.6432°, elevation 95 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.