Ketchikan weather by month

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Overview

Ketchikan, Alaska’s largest city by population, is perched on the southern coast of the Tongass National Forest. Nestled between the Pacific Ocean and the dense temperate rainforest, it enjoys a unique maritime climate. Understanding the monthly weather patterns is key for travelers, new residents, and anyone planning outdoor adventures in this picturesque island town.

Below you’ll find a month‑by‑month snapshot of Ketchikan’s weather, seasonal summaries, practical travel tips, a quick FAQ, and curated resources to help you plan or settle into life in this stunning corner of the world.

Seasonal Weather Patterns

Season Typical Weather Key Features
Spring (March–May) Mild temperatures, increasing rain Blossoming flora, migratory bird sightings
Summer (June–August) Warmest temperatures, high humidity Long daylight (up to 22 hrs), occasional rain
Fall (September–November) Cooling trend, stormy weather Vibrant foliage, whale watching season
Winter (December–February) Cold but not extreme, heavy precipitation Snow in late winter, abundant rainfall

While you won’t encounter the harsh, freezing temperatures typical of the interior of Alaska, the ocean’s proximity keeps Ketchikan’s climate relatively mild. However, cloud cover, wind, and rainfall can create a damp, variable environment throughout the year.

Ketchikan Weather by Month

The following table summarizes the average high & low temperatures, monthly precipitation, and sunshine hours. These values are based on U.S. National Weather Service data and may vary slightly year to year.

Month Avg. High (°F) Avg. Low (°F) Rainfall (in) Sunshine Hours
January 35 28 11.1 60
February 37 29 10.7 74
March 42 33 10.2 81
April 46 37 9.8 89
May 53 42 9.0 104
June 57 47 8.2 121
July 59 49 7.7 128
August 57 48 8.4 121
September 51 43 9.7 90
October 43 36 10.3 70
November 38 31 10.9 65
December 34 27 11.5 55

Interpretation:

  • Warmest months: June–August, though temperatures rarely exceed 60 °F. Humidity can make it feel warmer.

  • Rainiest months: January–March and October–November. Expect a drizzle or brief storm most days.

  • Sunshine: Peaks in July, providing the most extended daylight for outdoor activities.

Travel & Activity Planning Tips

Month Suggested Activities Outfit Tips Weather Warnings
January–March Whale watching tours, bird photography Wool coat, windbreaker, waterproof boots Windy conditions; keep eye on storm alerts
April–May Hike Misty Fjords, salmon fishing Light layers, rain jacket Frequent showers; map your trail
June–July Kayaking, tide‑pooling, fishing UV‑protective clothing, hat Peak sun hours; stay hydrated
August Camping, cultural festivals Comfortable shorts, light jacket Early rain showers; be prepared
September Glacier viewing, harvest festivals Windbreakers; layering Weather shifts quickly; check forecasts
October–November Scenic drives, guided forest walks Insulated jacket, gloves Snow possible; prepare for icy roads
December Daylight hiking, northern lights hunting Heavy coat, thermal layers Short day; daylight only 5–6 hrs
January Snowshoeing, photo spots Water‑repellent gear, layering Heavy snowfall may limit activity

General Advice:

  • Pack layers: Even during summer, temperatures can drop significantly at night.

  • Carry rain gear: Umbrellas may be less practical; waterproof jackets are preferable.

  • Check local alerts: The Alaskan weather can change rapidly. Use the Weather Service or local news for real‑time updates.

  • Plan for daylight: During winter, the days are short; schedule early for daylight-dependent activities.

FAQ

Q1: Is Ketchikan’s weather harsh like other parts of Alaska?

A1: No—Ketchikan’s maritime climate keeps temperatures mild, though it remains damp and cloudy.

Q2: When is the best time for surfing?

A2: Late spring to early summer (May–June) offers steady swells with comparatively calmer weather.

Q3: Does Ketchikan receive snow?

A3: Yes, but snow is typically mild and sparse, mainly in December and January.

Q4: Are there significant temperature swings within a single day?

A4: The ocean moderates extremes; temperature changes are usually gradual, though high humidity can make temperatures feel hotter or colder than the numbers suggest.

Q5: Can I enjoy a picnic in July?

A5: Absolutely, but bring a waterproof blanket and be prepared for sudden showers. Sun protection is essential during the longest daylight hours.

Resources

With this guide, you’re equipped to navigate Ketchikan’s climate, whether you’re planning a month-long stay, a brief trip for the summer tide‑pooling, or simply curious about what to expect across the seasons. Happy travels, and enjoy the beauty of Alaska’s island jewel!

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