What is the weather like in Juneau throughout the year?

Juneau experiences varying weather throughout the year. The warmest month is August with average highs of 17°C. The coolest month is December.

What is the weather like in Juneau in May?

Juneau in May scores 64/100 based on 30 years of climate data. Worthwhile timing with some trade-offs.

Who should visit Juneau in May?

May in Juneau is ideal for: Cultural tourists, Business travelers.

Best Time to Visit Juneau | 30-Year Weather Analysis

Why May is the Best Time to Visit Juneau

Is May a Good Time to Visit Juneau?

👌Worthwhile timing with some trade-offs(64/100)

Short Answer

Monsoon conditions shape Juneau's May: expect 44% daily rain chance. Mornings often clear before afternoon showers - early starts recommended.

Decision Factors

Very high humidity

80% average humidity

Plenty of sunshine

9h of sunshine daily

Shoulder season - balanced conditions

40% of peak - good value with moderate crowds

Good For

🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

🏖️
Beach lovers
Sea temperature only undefined°C - too cold for comfortable swimming
👴
Elderly travelers
80% humidity creates difficult conditions

Warmest

August

17°C avg

Coolest

December

-1°C avg

Driest

May

44% rain

Wettest

October

66% rain

Planning Your Trip to Juneau, United States

Wondering when is the best time to visit Juneau? Based on our analysis of 30 years of NASA satellite weather data, the ideal months to travel to Juneau are May, June, July. During these months, you'll experience optimal temperatures around 11°C with only 44% chance of rain.

The Juneau climate varies throughout the year. August is the hottest month with average highs of 17°C, while December is the coldest at -1°C. If you're planning outdoor activities or sightseeing in Juneau, avoid October when rainfall peaks at 66% probability.

For the best Juneau weather experience, we recommend visiting during May for the driest conditions or the shoulder months of May and June for a perfect balance of weather and fewer crowds.

Juneau Weather by Month: Climate Guide

Click any month to explore detailed daily forecasts for Juneau

🏆 85-100: Excellent👍 70-84: Great👌 55-69: Good🤔 40-54: Fair⚠️ 0-39: Challenging

When to Visit Juneau: Travel Style Guide

Personalized Juneau travel recommendations based on 30-year weather data

Budget Travelers

Shoulder season with good weather and lower prices

FebruaryMarchAugust

Avoiding Crowds

Fewer tourists with acceptable weather conditions

AprilMayJune

Photography

Best light conditions with clear skies

MayJuneJuly

Winter Escape

Escape the cold with warmest temperatures

JuneJulyAugust

Juneau Weather FAQ: Your Questions Answered

What is the best time to visit Juneau?

Based on 30 years of weather data, the best months to visit Juneau are May, June, July. These months offer the optimal combination of pleasant temperatures (11°C avg) and low rainfall (44% chance).

When is the hottest time of year in Juneau?

August is historically the warmest month in Juneau with average highs of 17°C. If you prefer cooler weather, consider visiting in December when temperatures average around -1°C.

When is the rainy season in Juneau?

October typically sees the most rainfall in Juneau with a 66% chance of rain. For the driest conditions, plan your visit in May when rain probability drops to just 44%.

How accurate is the Juneau weather forecast?

Our Juneau climate analysis is based on 30 years of NASA POWER satellite observations (1995-2024), providing highly accurate historical averages. While weather can vary year to year, these long-term patterns are excellent indicators for planning your trip to Juneau.

What should I pack for Juneau?

Packing depends on when you visit. In August (warmest month), pack light summer clothes for 17°C weather. In December (coolest month), bring layers for -1°C temperatures. During October, pack rain gear as there's a 66% chance of rain.

Is Juneau good for a destination wedding?

Yes! The best months for an outdoor wedding in Juneau are May (only 44% rain chance) and May for optimal weather conditions. Avoid October when rain probability peaks at 66%.