The weather in August in Portland
It's cool to moderate in August in Portland with an average temperature of 17°C. Temperatures this month range from a low of 15°C to a high of 18°C. At night, you can expect temperatures between 8°C and 11°C.
Looking for sun and warm weather? August isn’t a good month to be in Portland. The temperatures are too low for a warm stay this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in August for Portland, New Zealand. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 35°C in 2020, Portland reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 11°C in 2016. The extreme nighttime temperatures ranged from a lowest recorded value of 1°C to a highest value of 18°C.
Rainfall amount
In August, there is an average of 110 mm of precipitation, spread over 13 days. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in August for Portland
Click on any day in August to get detailed info about the usual weather on that day in Portland. Check out the historical temperatures and precipitation over the past 10 years on this day.
August weather comparison
Portland | New York | |
---|---|---|
Average temperature | 17°C | 30°C |
Max. temperature | 18°C | 31°C |
Min. temperature | 8°C | -5°C |
Total precipitation | 110 mm | 79 mm |
Rainy days | 13 days | 13 days |
Start of August
The month of August starts in Portland with cool temps, averaging around 17°C during the day and nights around 10°C.
Mid August
By mid-August, daytime temps rise to around 18°C, with nights around 10°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of August
By the end of August, the average daytime temperature in Portland is around 17°C, while nighttime temps are about 10°C. A shower might pop up, but overall, the weather will be dry and sunny.
UV index
The UV index is a maximum of 7 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.
Check out the climate of Portland for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in August in Portland, New Zealand. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in August in Portland
Temperature in August in Portland over the years
Precipitation charts
These charts show the average amount of precipitation in August in Portland, New Zealand. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in August in Portland
Total precipitation in August in Portland over the years
Daily UV index in August in Portland
This chart shows the average daily UV index in August in Portland, 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.
Weather experiences in August in Portland
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Average weather in Portland by month
Click on a month below to see detailed weather info for Portland. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.