Average weather for Glacier Bay National Park in August
It's cool to moderate in August in Glacier Bay National Park with an average temperature of 16°C. Temperatures this month range from a low of 15°C to a high of 19°C. At night, you can expect temperatures between 10°C and 13°C.
Start of August
The month of August starts in Glacier Bay National Park with cool temps, averaging around 17°C during the day and nights around 12°C. There are plenty of days with a good chance of precipitation.
Mid August
By mid-August, daytime temps stay steady at around 17°C, with nights around 11°C. There’s a high chance of precipitation during this time.
End of August
By the end of August, the average daytime temperature in Glacier Bay National Park is around 16°C, while nighttime temps are about 11°C. There’s a significant chance of many days with precipitation.
In August, there is an average of 210 mm of precipitation, spread over 16 days. The wind speed is around 4 Bft, mostly coming from the South.
Glacier Bay National Park in August |
New York | ||
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16°C | 30°C | |
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19°C | 31°C | |
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15°C | -5°C | |
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210 mm | 79 mm | |
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16 days | 13 days |
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is August a good time to visit Glacier Bay National Park?
Looking for sun and warm weather? August isn’t a good month to be in Glacier Bay National Park. The temperatures are too low for a warm stay this month.
Temperature records
With 27°C in 2017, Glacier Bay National Park reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 9°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of 5°C to a highest value of 16°C.
Check out the climate of Glacier Bay National Park for all months and discover the best travel time
Daily Temperature in August in Glacier Bay National Park
This chart shows the average daily high and low temperatures in August for Glacier Bay National Park, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in August in Glacier Bay National Park
The chart below shows the average daily precipitation in August for Glacier Bay National Park, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for August, you can expect about 16 days of precipitation in Glacier Bay National Park.
Daily UV index in August in Glacier Bay National Park
This chart shows the average daily UV index in August in Glacier Bay National Park, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Glacier Bay National Park over the years
This chart shows the average temperature in August in Glacier Bay National Park, measured in degrees Celsius, over the past few years.
Total precipitation in August in Glacier Bay National Park over the years
This chart shows the average precipitation in August in Glacier Bay National Park, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for Glacier Bay National Park
Click on any day in August to get detailed info about the usual weather on that day in Glacier Bay National Park. Check out the historical temperatures and precipitation over the past 10 years on this day.































Weather experiences in August in Glacier Bay National Park
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Average weather in Glacier Bay National Park by month
Click on a month below to see detailed weather info for Glacier Bay National Park. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Glacier Bay National Park for all months at once