Roseburg weather in August

In August, Roseburg sees average daytime highs of 82°F and overnight lows near 54°F, with 0.4 in of rain across 2 wet days and about 13.8 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 83°F in the first days to 80°F by the end. The sky is clear or mostly clear about 74% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 24 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Roseburg's 2nd-clearest and 9th-windiest month. For the whole year in context, see Roseburg's year-round climate.

Daytime high
82°
1st warmest
Overnight low
54°
12th coldest
Rainfall
0.4 in
2 wet days
Daylight
13 h 48 min
5:24 AM – 7:11 PM
Cloud cover
25%
2nd clearest
Wind
4 mph
9th windiest
Solar energy
6.59 kWh/m²
Travel score
8.0
out of 10

Roseburg is city in and seat of Douglas County, Oregon, United States.

Density
837/km²
people per km²
Founded
1851

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 83°F in the first days to 80°F by the end.

A typical August day in Roseburg reaches about 82°F in the afternoon and slips back to 54°F overnight — a 28°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 91°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
18355
28355
38355
48354
58354
68354
78354
88354
98354
108354
118254
128254
138254
148254
158254
168254
178254
188254
198254
208253
218153
228153
238153
248153
258153
268153
278053
288053
298053
308052
318052

How August really feels in Roseburg

Once humidity and wind are folded in, August averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Roseburg weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan48° / 34°6.216.13.49.21.5
Feb51° / 35°4.914.53.210.22.2
Mar55° / 37°5.816.6311.63.0
Apr59° / 40°4.615.41.413.24.0
May66° / 45°3.110.6014.45.9
Jun72° / 49°1.66.9015.17.3
Jul81° / 54°0.31.6014.98.1
Aug82° / 54°0.42013.88.0
Sep76° / 50°1.24.7012.38.1
Oct65° / 43°3.49.9010.86.0
Nov53° / 38°6.315.91.49.52.5
Dec47° / 34°7.816.83.48.91.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 74% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 11% of August, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18812
28713
38713
48713
58614
68614
78614
88515
98515
108515
118515
128416
138416
148416
158515
168515
178515
188515
198515
208515
218416
228416
238317
248317
258317
268317
278317
288416
298317
308317
318317

Chance of precipitation in August

Any precipitation

Roseburg gets around 0.4 in of rain over 2 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 6% and peaks near 10% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
13
23
33
44
54
64
74
84
94
104
114
125
135
145
155
166
176
187
197
207
218
228
239
249
259
2610
2710
2810
2910
3010
3110

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
18515
28515
38614
48614
58614
68614
78515
88515
98515
108515
118416
128416
138416
148416
158416
168416
178515
188515
198515
208515
218614
228614
238713
248713
258812
268812
278911
289010
299010
30919
31919

Wind in August

Winds average 4 mph in August.

Across August, daily wind ranges from about 4 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 24 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 5:07 AM to 5:41 AM, and sunset from 7:32 PM to 6:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.45:077:32
214.45:087:30
314.35:097:29
414.35:117:28
514.35:127:27
614.25:137:25
714.25:147:24
814.15:157:23
914.15:167:21
1014.05:177:20
1114.05:187:19
1214.05:197:17
1313.95:207:16
1413.95:227:14
1513.85:237:13
1613.85:247:11
1713.75:257:10
1813.75:267:08
1913.75:277:06
2013.65:287:05
2113.65:297:03
2213.55:317:01
2313.55:327:00
2413.45:336:58
2513.45:346:56
2613.35:356:55
2713.35:366:53
2813.25:376:51
2913.25:396:50
3013.15:406:48
3113.15:416:46

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.59 kWh/m².

For context, solar energy here swings from a low near 1.34 kWh/m² to a high of 7.46 kWh/m² in July across the year — August's 6.59 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.2Intense
47.1Intense
57.1Intense
67.0Intense
77.0Intense
87.0Intense
96.9Intense
106.9Intense
116.8Intense
126.8Intense
136.8Intense
146.7Intense
156.7Intense
166.6Intense
176.6Intense
186.5Intense
196.5Intense
206.4Intense
216.4Intense
226.3Intense
236.3Intense
246.3Intense
256.2Intense
266.2Intense
276.1Intense
286.0Intense
296.0Intense
306.0Bright
315.9Bright
Planning a trip in August

Hazard calendar for Roseburg

In seasonPeak

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

Roseburg's rainy season runs November–April, when most of the year's rain falls.

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

Is August a good time to visit Roseburg?

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

8.0
Sightseeing
3rd-best month of the year
8.6
Beach & pool
1st-best month of the year

August is one of the better times to visit Roseburg for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Roseburg in August

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

In August, Roseburg sees daytime highs around 82°F and nights near 54°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Roseburg in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Roseburg peaks around July 15 at about 9 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 9Dec 17UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar5Moderate
Apr6High
May9Very high
Jun8Very high
Jul9Very high
Aug7Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Roseburg in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Roseburg is worst in September — around 73 µg/m³ PM2.5 (unhealthy), about 16.1× the cleanest month (January, 5 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateSep 1566 µg/m³Jan 225 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb6Good
Mar8Good
Apr9Good
May9Good
Jun7Good
Jul13Moderate
Aug31Moderate
Sep73Unhealthy
Oct11Good
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Roseburg?

Roseburg sits at 43.2°N, 123.3°W, 482 ft above sea level, in United States. The nearest listed city is Coos Bay, 45 mi away.

Topography around Roseburg

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Roseburg.

Within 2 miles, the terrain around Roseburg has significant variations in elevation — a maximum elevation change of 1,060 ft around an average of 673 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,858 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,706 ft.

The land around Roseburg is covered by trees (54%) and artificial surfaces (25%) within 2 miles, trees (55%) and grassland (39%) within 10 miles, and trees (90%) within 50 miles.

2 miles
1,060 ft
10 miles
2,858 ft
50 miles
6,706 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Coos Bay 45 mi · Grants Pass 53 mi · Eugene 59 mi · Springfield 60 mi · Central Point 62 mi · Medford 66 mi · Ashland 78 mi · Corvallis 93 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 Roseburg (43.2165°, -123.3417°, elevation 482 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).