When you think of Southeast Alaska, towering glaciers, lush rainforests, and stunning wildlife likely come to mind.
But before you embark on your journey to this majestic region, understanding what to expect from the weather during the summer months is crucial.
Southeast Alaska’s climate is unique, offering both challenges and rewards that can greatly influence your travel experience.
This guide will equip you with the essential information you need to make the most of your adventure in this captivating part of the world.
Overview of Southeast Alaska’s Summer Climate
Southeast Alaska is known for its temperate rainforest climate, which means that even in the height of summer, you can expect cooler temperatures, frequent rain, and cloudy skies.
This region, encompassing places like Juneau, Sitka, and Ketchikan, experiences maritime weather patterns, largely influenced by the Pacific Ocean.
As a result, the weather can be unpredictable, with sudden shifts that can catch unprepared travelers off guard.
However, these same weather patterns also contribute to the region’s lush landscapes and vibrant ecosystems, making it a true paradise for nature lovers.
Average Temperatures
When planning your summer trip to Southeast Alaska, you’ll want to prepare for a range of temperatures.
In June, July, and August, daily highs typically range from 55°F to 65°F (13°C to 18°C), with lows dipping into the 40s°F (5°C to 10°C) at night.
While these temperatures might seem mild, the combination of moisture in the air and a cool breeze can make it feel colder, especially if you’re out on the water or exploring higher elevations.
To stay comfortable during your trip, it’s essential to pack layers.
A good base layer, a warm fleece or sweater, and a waterproof outer layer will serve you well.
Even on days that start out sunny, the weather can change quickly, so having options to add or remove layers is key.
Rainfall Expectations
Southeast Alaska is famous—or perhaps infamous—for its rain. In fact, some areas, like Ketchikan, are among the wettest places in North America, with an average annual rainfall of over 150 inches.
During the summer months, you can expect frequent showers, though they are often light and intermittent rather than heavy downpours.
This constant drizzle is what keeps the region’s forests so lush and green, but it also means that waterproof gear is non-negotiable.
A quality rain jacket and waterproof shoes are must-haves, and packing a travel umbrella or rain hat can also be beneficial.
If you’re planning outdoor activities like hiking or wildlife viewing, quick-dry clothing will help keep you comfortable when the rain inevitably makes an appearance.
Sunshine vs. Cloud Cover
Cloud cover is a common feature of Southeast Alaska’s summer weather. While you may experience a few gloriously sunny days, it’s more likely that you’ll be greeted with overcast skies.
This doesn’t mean the scenery will be any less breathtaking, but it does impact the overall ambiance and visibility.
For photographers, the diffuse light created by cloud cover can actually be a blessing, softening the harsh contrasts that bright sunlight can create.
However, if you’re hoping for vibrant blue skies in your travel photos, be prepared for some patience—or a bit of luck.
On the upside, the persistent cloud cover often leads to dramatic, misty landscapes that are equally stunning in their own right.
Best Time to Visit for Ideal Weather
While Southeast Alaska’s summer weather is famously unpredictable, there are still certain times within the season that offer more favorable conditions.
Typically, July and early August are considered the best times to visit if you’re looking for the warmest and driest weather.
During these weeks, you’re more likely to experience those coveted sunny days, although rain is still a strong possibility.
Late June can also be a good time to visit, as the summer season begins to take hold, but with fewer crowds compared to July and August.
However, if you prefer cooler temperatures and don’t mind the rain, late August into early September offers a quieter experience as the tourist season starts to wind down.
Weather Impact on Outdoor Activities
Southeast Alaska is an outdoor enthusiast’s dream, but the weather plays a significant role in shaping your adventures.
Whether you’re hiking through the Tongass National Forest, kayaking through fjords, or fishing for salmon, understanding how the weather will affect these activities is crucial.
Hiking – Trails in Southeast Alaska can range from well-maintained paths to rugged, backcountry routes.
Rain can make trails slippery, and in some areas, persistent moisture can lead to muddy conditions.
Sturdy, waterproof hiking boots with good traction are essential, and hiking poles can provide extra stability on uneven terrain.
Fishing – If fishing is on your itinerary, you’ll be pleased to know that the weather generally doesn’t deter this activity.
However, cloudy and overcast days can lead to cooler temperatures on the water, so dressing in layers and bringing a thermos of something warm can enhance your experience.
Rain gear is also a must, as summer showers can appear without much warning.
Kayaking and Boating – For those looking to explore Southeast Alaska by water, the weather can influence both visibility and comfort.
Foggy mornings are common, particularly in coastal areas, and can limit visibility, so it’s important to follow safety guidelines and stick to well-charted areas.
Wearing waterproof and wind-resistant clothing will help protect you from the elements, as even on calm days, the cool breeze on the water can feel chilly.
Wildlife Viewing – Many come to Southeast Alaska to see its incredible wildlife, including bears, eagles, and whales.
The good news is that the weather has little impact on wildlife activity; in fact, some animals, like bears, are more active in cooler, cloudier conditions.
Just be sure to pack appropriately, as you might be standing still for long periods in less-than-ideal weather conditions.
Essential Packing List for Summer
Packing for Southeast Alaska’s summer weather requires some careful consideration.
Here’s a list of essentials to ensure you’re prepared for whatever Mother Nature has in store
- Waterproof Rain Jacket – A lightweight, breathable, and waterproof jacket is crucial for staying dry.
- Waterproof Footwear – Hiking boots or shoes with good grip and waterproofing will keep your feet dry on rainy trails.
- Layered Clothing – Bring a mix of short-sleeve and long-sleeve shirts, fleece or sweaters for warmth, and a good base layer to wick moisture away from your skin.
- Quick-Dry Pants – Avoid heavy fabrics like denim; opt for quick-drying pants that are comfortable in both wet and dry conditions.
- Hat and Gloves – A warm hat and gloves may be necessary, especially on cooler mornings or when spending time on the water.
- Umbrella or Rain Hat – A small, travel-friendly umbrella or rain hat can provide additional protection from the rain.
- Backpack Cover – If you’re carrying a backpack, a waterproof cover will help keep your gear dry.
- Sunscreen and Sunglasses – Even on cloudy days, the sun’s rays can be strong, especially when reflecting off water or snow.
- Bug Repellent – Mosquitoes and other insects can be active in the summer, particularly in wooded areas.
Weather-Related Hazards
While the weather in Southeast Alaska is generally manageable with the right preparation, there are a few hazards to be aware of.
Slippery trails, especially after rain, can pose a risk, so take care when hiking on steep or uneven ground.
Fog is another common occurrence, particularly in the early morning and late evening, which can reduce visibility on roads and waterways.
Sudden weather changes are also something to watch for.
Even if the day starts out mild and sunny, it’s not uncommon for a rainstorm to roll in unexpectedly.
Always check the local weather forecast before heading out and consider carrying a map or GPS device if you’re venturing into more remote areas.
Daylight Hours and Sunset Times
One of the perks of visiting Southeast Alaska in the summer is the extended daylight hours.
In June and July, you can expect up to 18 hours of daylight, with the sun setting as late as 10:30 PM. This gives you plenty of time to explore, even after a leisurely breakfast or late start.
The long days are ideal for fitting in multiple activities, from hiking and sightseeing to fishing and wildlife viewing.
However, it’s easy to lose track of time, so be mindful of your energy levels and make sure to plan for some downtime to rest and recharge.
Regional Weather Variations
Southeast Alaska is a large region, and the weather can vary significantly from one location to another.
For instance, Ketchikan, located on the southern tip of the region, tends to be wetter and cooler than Juneau, which is slightly further north. Sitka, located on Baranof Island, often experiences milder temperatures and less rainfall compared to other areas.
When planning your trip, consider the specific destinations you’ll be visiting and how their weather patterns might differ.
This can help you pack more effectively and plan your activities to align with the most favorable conditions.
Conclusion
Understanding the weather in Southeast Alaska during the summer is key to making the most of your trip.
By preparing for cooler temperatures, frequent rain, and varying conditions, you’ll be well-equipped to enjoy all that this stunning region has to offer.
Whether you’re hiking through ancient forests, kayaking along pristine coastlines, or simply soaking in the breathtaking scenery, knowing what to expect from the weather will ensure that your adventure is both comfortable and unforgettable.
