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    Oregon

    Portland weather and climate

    Oregon

    Portland weather and climate

    Day

    20 °C

    Night

    8 °C

    Sea

    12 °C

    Precipitation

    66 mm

    in month

    Rainy days

    12 days

    in month

    Daylight

    15 hours

    average

    Sunshine

    9 hours

    average

    Humidity

    69 %

    Weather charts for Portland

    JanFebMarAprMayJunJulAugSepOctNovDec24681012Temperature (° C)051015202530Precipitation (mm)0190
    Weather overview
    JanFebMarAprMayJunJulAugSepOctNovDec24681012Temperature (° C)051015202530Precipitation (mm)0190
    Wet days chart
    JanFebMarAprMayJunJulAugSepOctNovDecWet days051015205101520
    Sunhours per day chart
    JanFebMarAprMayJunJulAugSepOctNovDecSunhours per day024681012142468101214
    Wind chart
    JanFebMarAprMayJunJulAugSepOctNovDecWind0246123456
    Humidity chart
    JanFebMarAprMayJunJulAugSepOctNovDecHumidity %55606570758085905560657075808590
    Data backed by 40 years of history

    We make the most from 40 years of historical weather data to predict the best weather conditions.

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    16 500 000 weather records

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    Aerial view of mountain range in Portland at dawn

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    Weather overview for Portland

    Weather overview

    Portland (United States of America) is a place with a mild climate. The day temperatures range from 7.3 °C (45.1 °F) in December to 26.7 °C (80.1 °F) in August. The highest night temperatures could be experienced in July with 13.2 °C (55.8 °F), the lowest in December with 1.0 °C (33.8 °F). The driest month is July with just 4 days of rain, on the contrary, the month when it rains the most is November with 19 days of rain.

    January weather

    The day temperature starts to rise in Portland, and the beginning of the rise of the night temperature could be noticed too in this month. The ongoing wet season is noticeable. The rainfall amount descent's start could be observed, with its value being 157 mm (6.18 in), while the number of rainy days descents similarly to the previous month, with its value being 18 days. The number of sun hours (without clouds) starts to rise, its value is 3 hours.

    February weather

    The rise of the day temperature can be observed, the value of this measure is 10.5 °C (50.9 °F) in Portland, while the minimum of the sea temperature can be noticed in February. The rainfall amount descents similarly to the previous month, the value of this measure is 115 mm (4.53 in), and the number of rainy days descents similarly to the previous month as well, the value of this measure is 17 days. The rise of the number of sun hours (without clouds) can be observed, the value of this measure is 4 hours.

    March weather

    The number of rainy days rise's start could be observed, the value of this measure is 17 days in Portland. The rise of the day temperature can be observed, with its value being 13.3 °C (55.9 °F), while the night temperature rise's start could be observed, with its value being 3.5 °C (38.3 °F). The rise of the number of sun hours (without clouds) can be observed, with its value of 6 hours.

    April weather

    The day temperature continues to rise, its value is 16.1 °C (61.0 °F) in Portland, while the beginning of the rise of the sea temperature could be noticed in April. The number of rainy days descent's start could be observed, with its value of 16 days, and the beginning of the descent of the rainfall amount could be noticed too in April. The number of sun hours (without clouds) continues to rise, with its value of 7 hours. The night temperature rises similarly to the previous month, its value is 5.2 °C (41.4 °F).

    May weather

    The day temperature rises similarly to the previous month, its value is 19.9 °C (67.8 °F) in Portland, and the rise of the sea temperature can be observed as well, its value is 12.1 °C (53.8 °F). The descent of the number of rainy days can be observed, with its value of 12 days, and the descent of the rainfall amount can be observed too, with its value of 66 mm (2.60 in). The night temperature continues to rise, its value is 8.3 °C (46.9 °F). The number of sun hours (without clouds) rises similarly to the previous month, with its value of 9 hours.

    June weather

    The tourist season is at its beginning this month in Portland. The day temperature rises similarly to the previous month, its value is 22.8 °C (73.0 °F), and the rise of the sea temperature can be observed too, the value of this measure is 13.7 °C (56.7 °F). The number of rainy days continues to descent, its value is 9 days, and the rainfall amount continues to descent as well, its value is 47 mm (1.86 in). The number of sun hours (without clouds) rises similarly to the previous month, with its value of 10 hours.

    July weather

    The tourist season is close to its peak this month in Portland. The sea temperature continues to rise, with its value of 14.5 °C (58.2 °F), and the day temperature rises similarly to the previous month too, with its value of 26.5 °C (79.7 °F). The number of rainy days is on its minimum, its value is 4 days, and the rainfall amount is on its minimum as well, with its value being 17 mm (0.66 in). The night temperature is on its maximum, its value is 13.2 °C (55.8 °F). The maximum of the number of sun hours (without clouds) can be noticed, with its value being 11 hours.

    August weather

    The tourist season is taking place in Portland, and the dry season is close to its peak as well in August. The day temperature reaches its maximum, with its value being 26.7 °C (80.1 °F), and the sea temperature reaches its maximum too, with its value being 14.7 °C (58.4 °F). The beginning of the rise of the number of rainy days could be noticed in this month. The beginning of the descent of the number of sun hours (without clouds) could be noticed in this month.

    September weather

    There is pending tourist season in Portland. The day temperature starts to descent, its value is 23.7 °C (74.7 °F), and the sea temperature descent's start could be observed as well, its value is 14.0 °C (57.2 °F). The beginning of the rise of the rainfall amount could be noticed, while the number of rainy days rises similarly to the previous month, with its value being 8 days. The descent of the number of sun hours (without clouds) can be observed, with its value of 8 hours.

    October weather

    The sea temperature descents similarly to the previous month, with its value being 12.4 °C (54.3 °F) in Portland, and the descent of the day temperature can be observed too, with its value being 17.2 °C (63.0 °F). The rainfall amount rises similarly to the previous month, its value is 91 mm (3.57 in). The descent of the night temperature can be observed, with its value of 6.4 °C (43.5 °F). The number of sun hours (without clouds) descents similarly to the previous month, the value of this measure is 5 hours. The wind speed is on its minimum.

    November weather

    The descent of the day temperature can be observed, with its value of 11.0 °C (51.8 °F) in Portland, and the sea temperature continues to descent too, with its value being 11.2 °C (52.2 °F). The wet season is about to start this month. The number of rainy days reaches its maximum, the value of this measure is 19 days, while the rainfall amount rises similarly to the previous month, the value of this measure is 168 mm (6.62 in). The number of sun hours (without clouds) continues to descent, with its value of 3 hours.

    December weather

    The minimum of the day temperature is observable in Portland, while the descent of the sea temperature can be observed, its value is 10.2 °C (50.3 °F). The wet season is taking place. The night temperature reaches its minimum in December. The maximum of the rainfall amount is observable, with its value of 172 mm (6.79 in). The minimum of the number of sun hours (without clouds) can be noticed, the value of this measure is 2 hours.

    FAQs

    Is April part of the dry season in Portland?

    No, April is not a dry month in Portland, expect rain approximately 16 days in a month.

    What is the average number of rainy days in Portland in May?

    In May in Portland, we can expect 12 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.8 days of the week, or in general - 39 % days.

    Are there good conditions to visit in June in Portland?

    In Portland in June, there are ideal conditions for a vacation. There are only 9 days of rain in the whole month, so you can leave your umbrella at home. There are some people, who may feel a slight chill at 22.8 °C (73.0 °F), but others will feel perfectly fine. The temperature of 11.1 °C (52.0 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.

    Is it hot in Portland in July?

    In July in Portland, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.

    What is the temperature in Portland during the day in August?

    In Portland in August, the average daily temperatures will be 26.7 °C (80.1 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.

    Is there a wet season in September in Portland?

    No, there is no wet season in Portland in September - you can expect 8 days of rain during the month.

    How many hours of sun to expect in Portland in October?

    There is an average length of sunshine of 5 hours per day in October in Portland.