Juneau weather in August

In August, Juneau sees average daytime highs of 59°F and overnight lows near 49°F, with 9.3 in of rain across 19.3 wet days and about 15.1 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 61°F in the first days to 57°F by the end. The sky is clear or mostly clear about 13% of the time in August, and the air most often feels dry.

Daylight stretches from about 16 h 18 min at the start of August to 13 h 54 min by month's end. Set against the rest of the year, August is Juneau's 6th-clearest and 9th-windiest month. For the whole year in context, see Juneau's year-round climate.

Daytime high: 59°; 2nd warmest
Overnight low: 49°; 11th coldest
Rainfall: 9.3 in; 19.3 wet days
Daylight: 15 h 06 min; 4:28 AM – 7:36 PM
Cloud cover: 79%; 6th clearest
Wind: 4 mph; 9th windiest
Solar energy: 3.3 kWh/m²
Travel score: 3.5; out of 10

Juneau is consolidated city-borough and capital of the U.S. state of Alaska.

Density: 4/km²; people per km²
Founded: 1881

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

← July Juneau year-round climate September →Best places to visit in August

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 61°F in the first days to 57°F by the end.

A typical August day in Juneau reaches about 59°F in the afternoon and slips back to 49°F overnight — a 10°F spread between the day's warmth and the night's chill. On most days the high lands between 54°F and 66°F. Set against its neighbours, August runs on par with July and about 6°F warmer than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	61	61	61	61	61	61	61	61	61	61	61	61	60	60	60	60	60	59	59	59	58	58	58	58	58	57	57	57	57	57	56
Avg low (°F)	50	50	50	50	50	50	50	50	50	50	50	50	50	50	49	49	49	49	49	49	49	48	48	48	48	47	47	47	47	47	46

	Avg high (°F)	Avg low (°F)
1	61	50
2	61	50
3	61	50
4	61	50
5	61	50
6	61	50
7	61	50
8	61	50
9	61	50
10	61	50
11	61	50
12	61	50
13	60	50
14	60	50
15	60	49
16	60	49
17	60	49
18	59	49
19	59	49
20	59	49
21	58	49
22	58	48
23	58	48
24	58	48
25	58	48
26	57	47
27	57	47
28	57	47
29	57	47
30	57	47
31	56	46

How August really feels in Juneau

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

heat index over the day's high

Days feeling ≤ 32°F

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.

Juneau weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	27° / 19°	9.8	19.8	19.4	6.8	0.0
Feb	29° / 20°	7.4	16.6	15.9	8.9	0.0
Mar	33° / 22°	7.2	17.9	17.7	11.4	0.0
Apr	41° / 30°	5.6	16.5	11.9	14	0.2
May	50° / 37°	5.4	16	3.6	16.4	1.9
Jun	58° / 46°	5.3	16.5	0	17.8	3.3
Jul	60° / 50°	7.0	18.9	0	17.2	3.7
Aug	59° / 49°	9.3	19.3	0	15.1	3.5
Sep	53° / 43°	13.0	21	0.2	12.5	2.2
Oct	43° / 34°	13.0	22.7	8.2	9.9	0.4
Nov	33° / 24°	10.3	20.9	18.6	7.5	0.0
Dec	29° / 21°	10.8	21.1	20.4	6.2	0.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 7% of August, with mostly cloudy or overcast conditions the remaining 80%. Skies tend to cloud over as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	24	26	26	26	27	28	29	28	28	26	26	25	24	22	21	20	18	17	17	15	14	14	13	13	12	13	14	14	14	15	16
Cloudier (%)	76	74	74	74	73	72	71	72	72	74	74	75	76	78	79	80	82	83	83	85	86	86	87	87	88	87	86	86	86	85	84

	Clearer (%)	Cloudier (%)
1	24	76
2	26	74
3	26	74
4	26	74
5	27	73
6	28	72
7	29	71
8	28	72
9	28	72
10	26	74
11	26	74
12	25	75
13	24	76
14	22	78
15	21	79
16	20	80
17	18	82
18	17	83
19	17	83
20	15	85
21	14	86
22	14	86
23	13	87
24	13	87
25	12	88
26	13	87
27	14	86
28	14	86
29	14	86
30	15	85
31	16	84

Chance of precipitation in August

Any precipitation

Juneau gets around 9.3 in of rain over 19.3 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 63% and peaks near 74% on the wettest days. The odds climb toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	56	55	54	53	53	52	52	52	53	54	55	57	59	60	62	64	66	68	69	70	71	72	73	73	74	74	74	73	73	72	72

	Rain chance (%)
1	56
2	55
3	54
4	53
5	53
6	52
7	52
8	52
9	53
10	54
11	55
12	57
13	59
14	60
15	62
16	64
17	66
18	68
19	69
20	70
21	71
22	72
23	73
24	73
25	74
26	74
27	74
28	73
29	73
30	72
31	72

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	93	93	93	93	92	92	92	92	92	92	92	92	93	93	93	94	94	94	95	96	96	97	97	98	98	98	99	99	99	99	99
Comfortable (%)	7	7	7	7	8	8	8	8	8	8	8	8	7	7	7	6	6	6	5	4	4	3	3	2	2	2	1	1	1	1	1

	Dry (%)	Comfortable (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	92	8
6	92	8
7	92	8
8	92	8
9	92	8
10	92	8
11	92	8
12	92	8
13	93	7
14	93	7
15	93	7
16	94	6
17	94	6
18	94	6
19	95	5
20	96	4
21	96	4
22	97	3
23	97	3
24	98	2
25	98	2
26	98	2
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

Wind in August

Winds average 4 mph in August.

Across August, daily wind ranges from about 3 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	3	3	3	3	3	3	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	3	calm
2	3	calm
3	3	calm
4	3	calm
5	3	calm
6	3	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 16 h 18 min at the start of August to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 144 minutes over August. Sunrise moves from 3:55 AM to 5:01 AM, and sunset from 8:13 PM to 6:54 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	16.3	16.2	16.2	16.1	16.0	15.9	15.9	15.8	15.7	15.6	15.5	15.5	15.4	15.3	15.2	15.1	15.1	15.0	14.9	14.8	14.7	14.6	14.6	14.5	14.4	14.3	14.2	14.1	14.1	14.0	13.9
Sunrise (AM)	3:55	3:57	3:59	4:01	4:03	4:06	4:08	4:10	4:12	4:14	4:16	4:19	4:21	4:23	4:25	4:28	4:30	4:32	4:34	4:37	4:39	4:41	4:43	4:46	4:48	4:50	4:52	4:54	4:57	4:59	5:01
Sunset (PM)	8:13	8:10	8:08	8:06	8:04	8:01	7:59	7:56	7:54	7:51	7:49	7:46	7:44	7:41	7:39	7:36	7:33	7:31	7:28	7:25	7:22	7:20	7:17	7:14	7:11	7:09	7:06	7:03	7:00	6:57	6:54

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	16.3	3:55	8:13
2	16.2	3:57	8:10
3	16.2	3:59	8:08
4	16.1	4:01	8:06
5	16.0	4:03	8:04
6	15.9	4:06	8:01
7	15.9	4:08	7:59
8	15.8	4:10	7:56
9	15.7	4:12	7:54
10	15.6	4:14	7:51
11	15.5	4:16	7:49
12	15.5	4:19	7:46
13	15.4	4:21	7:44
14	15.3	4:23	7:41
15	15.2	4:25	7:39
16	15.1	4:28	7:36
17	15.1	4:30	7:33
18	15.0	4:32	7:31
19	14.9	4:34	7:28
20	14.8	4:37	7:25
21	14.7	4:39	7:22
22	14.6	4:41	7:20
23	14.6	4:43	7:17
24	14.5	4:46	7:14
25	14.4	4:48	7:11
26	14.3	4:50	7:09
27	14.2	4:52	7:06
28	14.1	4:54	7:03
29	14.1	4:57	7:00
30	14.0	4:59	6:57
31	13.9	5:01	6:54

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.3 kWh/m².

For context, solar energy here swings from a low near 0.29 kWh/m² to a high of 5.09 kWh/m² in May across the year — August's 3.3 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	3.9	3.9	3.9	3.9	3.9	3.9	3.8	3.8	3.7	3.7	3.6	3.5	3.5	3.4	3.3	3.3	3.2	3.1	3.0	3.0	2.9	2.9	2.8	2.8	2.7	2.7	2.7	2.6	2.6	2.6	2.6
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.9	Moderate
2	3.9	Moderate
3	3.9	Moderate
4	3.9	Moderate
5	3.9	Moderate
6	3.9	Moderate
7	3.8	Moderate
8	3.8	Moderate
9	3.7	Moderate
10	3.7	Moderate
11	3.6	Moderate
12	3.5	Moderate
13	3.5	Moderate
14	3.4	Moderate
15	3.3	Moderate
16	3.3	Moderate
17	3.2	Moderate
18	3.1	Moderate
19	3.0	Moderate
20	3.0	Moderate
21	2.9	Moderate
22	2.9	Moderate
23	2.8	Moderate
24	2.8	Moderate
25	2.7	Moderate
26	2.7	Moderate
27	2.7	Moderate
28	2.6	Moderate
29	2.6	Moderate
30	2.6	Moderate
31	2.6	Moderate

Planning a trip in August

Is August a good time to visit Juneau?

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

3.5

Sightseeing

2nd-best month of the year

—

Beach & pool

never really warm enough

August is a weaker month for outdoor sightseeing in Juneau.

What to pack for Juneau in August

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

In August, Juneau sees daytime highs around 59°F and nights near 49°F. Pack rain gear. Worth having: a warm layer. About 19 days see rain.

rain geara warm layer

UV index in Juneau in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Juneau peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	0	1	2	4	5	7	9	5	4	1	1	0
Level	Low	Low	Moderate	Moderate	Moderate	High	Very high	High	Moderate	Low	Low	Low

	UV index (midday)	Level
Jan	0	Low
Feb	1	Low
Mar	2	Moderate
Apr	4	Moderate
May	5	Moderate
Jun	7	High
Jul	9	Very high
Aug	5	High
Sep	4	Moderate
Oct	1	Low
Nov	1	Low
Dec	0	Low

Location & terrain

Where is Juneau?

Juneau sits at 58.3°N, 134.4°W, 56 ft above sea level, in United States. The nearest listed city is Whitehorse, 168 mi away.

Topography around Juneau

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

Within 2 miles, the terrain around Juneau has large variations in elevation — a maximum elevation change of 3,556 ft around an average of 945 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 5,486 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 7,946 ft.

The land around Juneau is covered by trees (57%) within 2 miles, trees (40%) and water (22%) within 10 miles, and trees (35%), snow and ice (25%) and water (24%) within 50 miles.

2 miles

3,556 ft

trees 57%

10 miles

5,486 ft

trees 40%

50 miles

7,946 ft

trees 35%

treesgrasslandartificial surfacesbare terrainsnow and icewatermoss and lichen

← July Juneau year-round climate September →Best places to visit in August

August weather nearby: Whitehorse 168 mi · Terrace 343 mi · Dawson City 431 mi · Fort St. John 525 mi · Prince George 541 mi · Eagle River 564 mi · Anchorage 574 mi · Badger 621 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

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 Juneau (58.3019°, -134.4197°, elevation 56 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°F)	Avg low (°F)
1	61	50
2	61	50
3	61	50
4	61	50
5	61	50
6	61	50
7	61	50
8	61	50
9	61	50
10	61	50
11	61	50
12	61	50
13	60	50
14	60	50
15	60	49
16	60	49
17	60	49
18	59	49
19	59	49
20	59	49
21	58	49
22	58	48
23	58	48
24	58	48
25	58	48
26	57	47
27	57	47
28	57	47
29	57	47
30	57	47
31	56	46

	Clearer (%)	Cloudier (%)
1	24	76
2	26	74
3	26	74
4	26	74
5	27	73
6	28	72
7	29	71
8	28	72
9	28	72
10	26	74
11	26	74
12	25	75
13	24	76
14	22	78
15	21	79
16	20	80
17	18	82
18	17	83
19	17	83
20	15	85
21	14	86
22	14	86
23	13	87
24	13	87
25	12	88
26	13	87
27	14	86
28	14	86
29	14	86
30	15	85
31	16	84

	Rain chance (%)
1	56
2	55
3	54
4	53
5	53
6	52
7	52
8	52
9	53
10	54
11	55
12	57
13	59
14	60
15	62
16	64
17	66
18	68
19	69
20	70
21	71
22	72
23	73
24	73
25	74
26	74
27	74
28	73
29	73
30	72
31	72

	Dry (%)	Comfortable (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	92	8
6	92	8
7	92	8
8	92	8
9	92	8
10	92	8
11	92	8
12	92	8
13	93	7
14	93	7
15	93	7
16	94	6
17	94	6
18	94	6
19	95	5
20	96	4
21	96	4
22	97	3
23	97	3
24	98	2
25	98	2
26	98	2
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

	Avg high (°F)	Avg low (°F)
1	61	50
2	61	50
3	61	50
4	61	50
5	61	50
6	61	50
7	61	50
8	61	50
9	61	50
10	61	50
11	61	50
12	61	50
13	60	50
14	60	50
15	60	49
16	60	49
17	60	49
18	59	49
19	59	49
20	59	49
21	58	49
22	58	48
23	58	48
24	58	48
25	58	48
26	57	47
27	57	47
28	57	47
29	57	47
30	57	47
31	56	46

	Clearer (%)	Cloudier (%)
1	24	76
2	26	74
3	26	74
4	26	74
5	27	73
6	28	72
7	29	71
8	28	72
9	28	72
10	26	74
11	26	74
12	25	75
13	24	76
14	22	78
15	21	79
16	20	80
17	18	82
18	17	83
19	17	83
20	15	85
21	14	86
22	14	86
23	13	87
24	13	87
25	12	88
26	13	87
27	14	86
28	14	86
29	14	86
30	15	85
31	16	84

	Rain chance (%)
1	56
2	55
3	54
4	53
5	53
6	52
7	52
8	52
9	53
10	54
11	55
12	57
13	59
14	60
15	62
16	64
17	66
18	68
19	69
20	70
21	71
22	72
23	73
24	73
25	74
26	74
27	74
28	73
29	73
30	72
31	72

	Dry (%)	Comfortable (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	92	8
6	92	8
7	92	8
8	92	8
9	92	8
10	92	8
11	92	8
12	92	8
13	93	7
14	93	7
15	93	7
16	94	6
17	94	6
18	94	6
19	95	5
20	96	4
21	96	4
22	97	3
23	97	3
24	98	2
25	98	2
26	98	2
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

	Avg high (°F)	Avg low (°F)
1	61	50
2	61	50
3	61	50
4	61	50
5	61	50
6	61	50
7	61	50
8	61	50
9	61	50
10	61	50
11	61	50
12	61	50
13	60	50
14	60	50
15	60	49
16	60	49
17	60	49
18	59	49
19	59	49
20	59	49
21	58	49
22	58	48
23	58	48
24	58	48
25	58	48
26	57	47
27	57	47
28	57	47
29	57	47
30	57	47
31	56	46

	Clearer (%)	Cloudier (%)
1	24	76
2	26	74
3	26	74
4	26	74
5	27	73
6	28	72
7	29	71
8	28	72
9	28	72
10	26	74
11	26	74
12	25	75
13	24	76
14	22	78
15	21	79
16	20	80
17	18	82
18	17	83
19	17	83
20	15	85
21	14	86
22	14	86
23	13	87
24	13	87
25	12	88
26	13	87
27	14	86
28	14	86
29	14	86
30	15	85
31	16	84

	Rain chance (%)
1	56
2	55
3	54
4	53
5	53
6	52
7	52
8	52
9	53
10	54
11	55
12	57
13	59
14	60
15	62
16	64
17	66
18	68
19	69
20	70
21	71
22	72
23	73
24	73
25	74
26	74
27	74
28	73
29	73
30	72
31	72

	Dry (%)	Comfortable (%)
1	93	7
2	93	7
3	93	7
4	93	7
5	92	8
6	92	8
7	92	8
8	92	8
9	92	8
10	92	8
11	92	8
12	92	8
13	93	7
14	93	7
15	93	7
16	94	6
17	94	6
18	94	6
19	95	5
20	96	4
21	96	4
22	97	3
23	97	3
24	98	2
25	98	2
26	98	2
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1