Juneau in August
In August, Juneau averages 17°C (63°F) during the day and 12°C (53°F) at night, with frequent rain — about 24 days of the month see precipitation (362 mm total).
ShoulderConditions are cool — bring a jacket for evenings. Expect daily rain or showers, often in heavy bursts.
It's peak hurricane season in Juneau during August. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How August compares to the rest of the year in Juneau
August is one of the warmest months in Juneau (2nd of 12) and one of the wettest months (1st of 12). Daytime temperature runs 9°C above the annual average (8°C). August runs 1°C cooler than July (18°C) and cools 3°C in September (14°C).
August sunrise & sunset in Juneau
Times shown for Juneau local time (America/Juneau), calculated for the 15th of August. They shift by a few minutes day to day across the month.
Photography light in Juneau — August
Golden-hour and blue-hour windows for the 15th of August, in Juneau's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Juneau in August
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on August's tier (Shoulder) and Juneau's popularity.
Crowds & pricing — August in Juneau
Juneau is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: Northern Hemisphere summer holidays peak hazard season (1 active)
Sun & mosquito risk — August in Juneau
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Juneau in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 0°C / 32°F | -3°C / 26°F | 301 mm | 23 | — |
| February | -1°C / 31°F | -5°C / 23°F | 213 mm | 18 | — |
| March | 2°C / 36°F | -2°C / 28°F | 184 mm | 20 | — |
| April | 6°C / 43°F | 1°C / 34°F | 193 mm | 22 | — |
| May | 13°C / 55°F | 6°C / 42°F | 166 mm | 19 | — |
| June | 16°C / 60°F | 10°C / 49°F | 179 mm | 23 | — |
| July | 18°C / 64°F | 12°C / 54°F | 227 mm | 23 | — |
| August | 17°C / 63°F | 12°C / 53°F | 362 mm | 24 | — |
| September | 14°C / 56°F | 8°C / 47°F | 387 mm | 23 | — |
| October | 8°C / 46°F | 3°C / 38°F | 361 mm | 24 | — |
| November | 2°C / 36°F | -1°C / 29°F | 308 mm | 24 | — |
| December | 0°C / 32°F | -4°C / 25°F | 308 mm | 22 | — |
Other cities with similar August weather
🌍 See the full ranked list of climate twins for Juneau in August →
Frequently asked questions
How hot is Juneau in August?
In August, Juneau averages a high of 17°C (63°F) and a low of 12°C (53°F) — generally mild and pleasant.
Does it rain a lot in Juneau in August?
August is quite rainy in Juneau, with about 24 rainy days on average.
Is August a good time to visit Juneau?
August is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Juneau in August?
Pack a warm jacket and layers, plus a compact umbrella or rain jacket. See the full August packing list for Juneau for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.