Alaska Temperature and Weather Averages

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Here’s a detailed temperature and rainfall chart for Alaska cruise ports and nearby destinations, covering May through September:

Port/City	May	June	July	August	September
Icy Strait Point	50°F / ~3.0" rain (est.)	55°F / ~3.5" rain (est.)	60°F / ~4.0" rain (est.)	58°F / ~5.5" rain (est.)	55°F / ~7.0" rain (est.)
Juneau	55°F / 3.5" rain	60°F / 3.8" rain	64°F / 4.5" rain	62°F / 5.5" rain	58°F / 6.5" rain
Ketchikan	57°F / 8.7" rain	61°F / 6.7" rain	64°F / 7.3" rain	62°F / 10.5" rain	59°F / 14.3" rain
Sitka	55°F / 3.5" rain	59°F / 2.9" rain	62°F / 4.0" rain	61°F / 6.2" rain	58°F / 8.5" rain
Skagway	55°F / 1.05" rain	60°F / 1.5" rain	65°F / 2.5" rain	63°F / 3.0" rain	58°F / 3.5" rain
Glacier Bay NP	56°F / 3.4" rain	60°F / 4.0" rain	64°F / 4.6" rain	60°F / 6.0" rain	58°F / 8.6" rain
Seward	44°F / 3.8" rain	52°F / 3.0" rain	56.8°F / 2.9" rain	54°F / 6.2" rain	48.7°F / 10.2" rain
Whittier	45°F / ~4.0" rain (est.)	52°F / ~4.5" rain (est.)	56°F / ~4.8" rain (est.)	54°F / ~6.0" rain (est.)	49°F / ~9.0" rain (est.)
Victoria, Canada	60°F / 1.2" rain	65°F / 0.8" rain	70°F / 0.5" rain	67°F / 1.0" rain	65°F / 1.2" rain
Seattle, WA	66°F / 1.5" rain	71°F / 1.0" rain	76°F / 0.7" rain	74°F / 1.2" rain	72°F / 1.6" rain

Legend:

• °F = Average high temperature

• " rain = Average monthly precipitation

• “(est.)” = Estimated based on nearby or similar-region data

Let me know if you'd like this as a downloadable PDF, spreadsheet, or in a graphic/chart image format!