Gustavus Weather in September

Gustavus in September sees moderate temperatures, with highs around 13°C (55°F) and overnight lows of 9°C (48°F). With the rainy season in full effect, expect around 364 mm (14 in) of rainfall and regular showers throughout the month.

Rainfall in Gustavus in September

As part of the rainy season, Gustavus sees around 19 days of rain in September, with an average of 364 mm (14 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.

Temperature in Gustavus in September

Daytime temperatures in Gustavus reach 13°C (55°F) in September, dropping to 9°C (48°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Gustavus in September

The area enjoys a balanced 112 hours of sunlight, ensuring it's neither too rainy nor too sunny.

September in Gustavus can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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• January
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For a detailed overview over the year and the best time to visit the United States of America, check out our Gustavus's climate page.

Gustavus Temperature in September

Min Temperature 9°C (48°F)  

Max Temperature 13°C (55°F)  

Chance of Rain 64%  

Precipitation 364 mm (14 in)  

Rainy days 19 days  

Humidity 87% *  

Sunshine 112 hours *  

Percentage Sunshine 29% *  

* Data from: Juneau, the United States of America (67 KM, 41 Miles).

What to Wear in Gustavus in September

Pack for changing conditions in Gustavus in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Gustavus in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

5/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Gustavus's climate page.

More climate data for Gustavus

Temperature Rainfall Sunshine Humidity

See the full Gustavus climate overview or explore weather in the United States of America.