Clima en Juneau en agosto
Juneau en agosto: agradable, muy lluvioso, con aire limpio — bien si toleras 18 días de lluvia.
Actualizado: septiembre de 2026 · normales climáticas del reanálisis ERA5
n.º 3 de 12 meses en Juneau · n.º 870 de 1413 destinos para visitar en agosto · confort 73/100 (nivel B)
- Días
- 19°C
- Noches
- 11°C
- Días de lluvia
- 18
- Sol
- 8 h
- Humedad
- 85%
- Horas de luz
- 15 h

Notas de viajeros sobre Juneau en agosto
Regulars answer the question about August rain by reframing it: this is temperate rainforest, measurable rain falls on 222 days of the year, and the right expectation is cloud and drizzle with a sunny day as a bonus. They put the month near 59F with roughly a three-in-four chance of rain on any day, and our row agrees emphatically at 265.1mm across 17.8 days under 19.2C. What the weather does not spoil is the reason to come: the whale trips from May to mid-September find humpbacks essentially every time, with about a one-in-five chance of orcas. The cruise season runs to mid-September. Evenings darken by half past nine. The record: humidity 85 percent, 8 hours of sun and AQI 28.
Otros meses en Juneau
Regulars are specific that early in this month can bring a genuine winter relapse, fresh snow falling all the way down to sea level and putting tours like Glacier Bay or helicopter flightseeing on hold, a real contrast to how settled May becomes just weeks later. Our row backs that cold, still-wintry read, 9.6C over 0.4C nights feeling -2C, with a heavy 163.4mm of rain across 17.6 days and a real 17.8cm of snow. Regulars are consistent that layered clothing plus proper rain gear, boots, gloves and a hat cover most of what this month can throw at a visitor, since conditions can swing from a mild, clear day to a genuine snow event within the same week. The record: humidity 80 percent, 7.7 hours of sun, a 9.8 kph wind and AQI 40.
Regulars are consistent on one rule regardless of the forecast: always bring proper rain gear to this part of Alaska, since even a visitor who caught a genuinely beautiful stretch one year is quick to add that the same week the year before was a washout. Our row backs the wet reality, 175.7mm of rain across a striking 15.4 days, alongside cool temperatures, 14.5C over 5.1C nights feeling 2C, and a trace of late snow, 2.6cm. Regulars pushing toward late May specifically say it can bring some of the season's best weather, so the back half of the month is worth favouring if the dates are flexible. Layering is the standard advice on top of the rain gear, since the temperature swings enough within a day to matter. The record: humidity 82 percent, 8.9 hours of sun and AQI 37.
Juneau measures rain on 222 days of an average year, and the forum's most useful correction is about the kind: this is drizzly English rain rather than a Florida downpour, so it can rain any day without ever being an all-day soaking. Our row gives 164.2mm across 16.7 precipitation days in June. Early June can be genuinely cold and windy, with port temperatures ranging from the high 60s Fahrenheit down to the 40s or 50s, which our row averages at 18.5C over 9.6C. Excursions rarely cancel for rain - the outfitters hand out gear - and the packing list is layers, rain gear, and a hat and gloves for any glacier day. The record: humidity 81 percent, 9.6 hours of sun and 18.1 hours of daylight.
Juneau forum threads describe February as genuinely variable and often described by posters as pretty miserable - rain, snow, wet snow, icy wind or occasionally cold and clear, with no single dominant pattern to count on. Posters were direct that the month rewards flexibility: warm, waterproof layering and a willingness to adjust plans day to day matter more than any specific forecast. A practical note repeated across threads: Alaska's state Legislature convenes in Juneau in February, pushing hotel prices up during what would otherwise be a quiet season. For those hoping to catch the Northern Lights, posters were candid that Juneau's frequent cloud cover makes it an unreliable spot for aurora viewing, though not impossible on a clear night. Snowshoeing toward Mendenhall Glacier or Eagle Beach was recommended as a solid way to make the most of the conditions.
Añade tu propia nota desde la ficha de Juneau en el mapa.
Normales climáticas de Juneau — agosto
Medias mensuales del reanálisis ERA5. El AQI es el índice de calidad del aire de EE. UU. (US AQI) medio del mes.
Afluencia en Juneau en agosto
Cuánta gente hay en el propio lugar: vacaciones escolares y masivas, los meses que marcó el editor y cuánto atrae su clima. Nunca cuenta en la puntuación de confort.
Máxima afluenciaCruise season, Summer break en Estados Unidos, vacaciones escolares en 2 de los mercados que lo llenan(estimado)
Máxima afluenciaConcurridoTemporada mediaTranquilo
Los mejores meses para el clima de Juneau
Ordenados según la propia puntuación de confort climático de este destino a lo largo del año, algo distinto de cuánta gente hay (consulta Afluencia, más arriba).
Mejor climaEl clima de Juneau alcanza su mejor momento de junio a agosto.
agosto incluye Humpback whale season.
Mejor climaClima aceptableClima más duro
Qué hay en Juneau en agosto
Eventos de temporada recurrentes, espectáculos naturales, cierres y festivos, seleccionados y con fuente.
- Temporada
Cruise season
25 Abr – 30 Sep · normalmenteMucha genteShips dock nearly every day from late April to the end of September under a daily passenger cap agreed with the town. Downtown is theirs until late afternoon; the trails and the ferry terminal never are. Fuente ↗
- Naturaleza
Humpback whale season
1 May – 20 Sep · normalmenteHumpbacks feed in Stephens Passage and Auke Bay from May until September, and the bubble-net groups work the same water year after year. Boats out of Auke Bay find them most days in midsummer.
- Naturaleza
Salmon run and bears
20 Jul – 15 Sep · normalmenteTemporada de faunaSockeye run up Steep Creek beside the Mendenhall visitor centre from late July, coho behind them into autumn, and the black bears fish it from below a public boardwalk.
¿Dónde está Juneau?
Juneau en agosto — preguntas frecuentes
- ¿Es agosto un buen momento para visitar Juneau?
- Juneau en agosto: agradable, muy lluvioso, con aire limpio — bien si toleras 18 días de lluvia. Es el mes n.º 3 de 12 en Juneau según la puntuación de confort de SeasonMap (73/100).
- ¿Qué tiempo hace en Juneau en agosto?
- En agosto, Juneau tiene una máxima media diaria de 19.2°C y una mínima de 10.7°C, con unos 265.1 mm de lluvia repartidos en unos 17.8 días de lluvia.
- ¿Cómo es la calidad del aire en Juneau en agosto?
- En agosto, Juneau tiene un índice de calidad del aire (US AQI) medio de unos 28.