Oak Harbor weather in July

In July, Oak Harbor sees average daytime highs of 62°F and overnight lows near 56°F, with 1.2 in of rain across 5.8 wet days and about 15.5 hours of daylight. It is the 2nd-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 62°F through the month. The sky is clear or mostly clear about 53% of the time in July, and the air most often feels dry.

Daylight stretches from about 15 h 48 min at the start of July to 14 h 54 min by month's end. Set against the rest of the year, July is Oak Harbor's 1st-clearest and 9th-windiest month. For the whole year in context, see Oak Harbor's year-round climate.

Daytime high
62°
2nd warmest
Overnight low
56°
11th coldest
Rainfall
1.2 in
5.8 wet days
Daylight
15 h 30 min
4:31 AM – 8:01 PM
Cloud cover
40%
1st clearest
Wind
7 mph
9th windiest
Solar energy
6.3 kWh/m²
Travel score
6.0
out of 10

Oak Harbor is city on Whidbey Island in Island County, Washington State, United States.

Density
925/km²
people per km²
Founded
1915

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 62°F through the month.

A typical July day in Oak Harbor reaches about 62°F in the afternoon and slips back to 56°F overnight — a 5°F spread between the day's warmth and the night's chill. On most days the high lands between 58°F and 66°F. Set against its neighbours, July runs about 4°F warmer than June and on par with August.

50°55°60°65°70°151015202531
Avg high (°F)Avg low (°F)
16055
26055
36055
46055
56055
66155
76155
86156
96156
106156
116156
126156
136256
146256
156256
166256
176256
186256
196257
206257
216257
226257
236257
246357
256357
266357
276357
286357
296357
306357
316357

Oak Harbor weather by month

How July compares with the rest of the year at a glance. July is the 2nd-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan45° / 42°6.218.61.48.60.9
Feb46° / 42°4.214.71.39.91.1
Mar48° / 44°4.817.90.311.61.5
Apr51° / 46°3.314013.42.3
May55° / 50°2.610.5014.93.5
Jun58° / 53°2.19.4015.84.4
Jul62° / 56°1.25.8015.56.0
Aug62° / 57°1.45.3014.16.3
Sep59° / 55°2.38.7012.45.0
Oct54° / 50°4.713.8010.63.1
Nov49° / 45°7.218.50.391.6
Dec45° / 42°6.418.11.48.20.9

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in July, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of July, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25842
35842
45941
56040
66040
76139
86238
96238
106337
116436
126436
136535
146535
156634
166634
176832
186832
196931
207030
217129
227228
237327
247426
257525
267525
277525
287723
297723
307624
317525

Chance of precipitation in July

Any precipitation

Oak Harbor gets around 1.2 in of rain over 5.8 wet days in July, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 19% and peaks near 25% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
125
225
325
424
524
623
723
822
922
1021
1121
1221
1320
1420
1520
1619
1719
1818
1918
2018
2117
2217
2317
2416
2516
2615
2715
2814
2914
3014
3114

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the dry band about 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1964
2964
3964
4955
5955
6955
7955
8946
9946
10937
11928
12919
139010
148911
158911
168812
178713
188713
198614
208614
218515
228515
238515
248416
258416
268317
278317
288317
298218
308119
318119

Wind in July

Winds average 7 mph in July.

Across July, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 15 h 48 min at the start of July to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over July. Sunrise moves from 4:19 AM to 4:49 AM, and sunset from 8:09 PM to 7:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.84:198:09
215.84:208:09
315.84:208:08
415.84:218:08
515.84:218:08
615.84:228:07
715.74:238:07
815.74:248:07
915.74:258:06
1015.74:258:06
1115.64:268:05
1215.64:278:04
1315.64:288:04
1415.64:298:03
1515.54:308:02
1615.54:318:01
1715.54:328:01
1815.44:338:00
1915.44:347:59
2015.44:357:58
2115.34:367:57
2215.34:387:56
2315.34:397:55
2415.24:407:54
2515.24:417:52
2615.14:427:51
2715.14:447:50
2815.14:457:49
2915.04:467:47
3015.04:477:46
3114.94:497:45

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.3 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 0.88 kWh/m² to a high of 6.3 kWh/m² in July across the year — July's 6.3 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.2Intense
Planning a trip in July

Hazard calendar for Oak Harbor

In seasonPeak

None of Oak Harbor's seasonal hazards are active in July. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Oak Harbor's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Oak Harbor?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.0
Sightseeing
2nd-best month of the year
1.1
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Oak Harbor for sightseeing.

What to pack for Oak Harbor in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Oak Harbor sees daytime highs around 62°F and nights near 56°F. Pack sun protection. Worth having: a warm layer. About 6 days see rain.

sun protectiona warm layer

Sea temperature near Oak Harbor in July

The nearest coast averages about 53°F in July — 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.

45°50°55°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°F)Comfort
Jan46Bracing
Feb46Bracing
Mar47Bracing
Apr48Bracing
May50Bracing
Jun52Bracing
Jul53Bracing
Aug54Bracing
Sep53Bracing
Oct50Bracing
Nov49Bracing
Dec47Bracing

UV index in Oak Harbor in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 8 (very high — sun protection essential). 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low
Location & terrain

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.

2 miles
354 ft
10 miles
771 ft
50 miles
9,780 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
July weather nearby: Anacortes 15 mi · Mount Vernon 17 mi · Arlington 25 mi · Marysville 27 mi · Mukilteo 29 mi · Everett 30 mi · Oak Bay 32 mi · West Lake Stevens 32 mi

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
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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. 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).