AI-generatedPortland, Oregon at a glance
- Best time
- Jun – Sep
- Warmest month
- Aug · 28°
- Sunshine a year
- 2,140 h
- Rain a year
- 1,230 mm
- Climate
- Temperate
- Time zone
- UTC−8 / UTC−7
- Elevation
- 12 m
Climate in Portland, Oregon
Portland, Oregon has a temperate climate with warm summers and cool winters. August is the warmest month with average highs of 28 °C, while December is the coolest at 8 °C. With around 2,140 hours of sunshine a year, Portland, Oregon is moderately sunny; July is the sunniest month with 11.0 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Good
Best time to visit: June – September
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 9°
- Midday, 13:00: about 16°
- Afternoon, 16:00: about 17°
- Evening, 20:00: about 13°
- Night, 23:00: about 11°
07:2518:27
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:07–08:06 · evening 17:47–18:46
- Blue hour
- Morning 06:55–07:07 · evening 18:46–18:57
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Portland, Oregon in October?
In October, Portland, Oregon is mild: daytime highs average 17 °C, and nights cool down to about 8 °C. Expect around 5 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 106 mm in total. All in all, October is a good month for a holiday in Portland, Oregon.
More details for October
- Daylight
- 11 h 2 min07:25 – 18:27
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 60 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−7America/Los_Angeles
How the score comes together
- Temperatureweight 50 %88 %
- Sunshineweight 20 %30 %
- Few rainy daysweight 30 %40 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Sunshine hours in Portland, Oregon
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.8 of 11.0 hours of daylight in Portland, Oregon, 44 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Portland, Oregon
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 3 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 9).
Minutes until sunburn in October
- Very fair skin
- about 45 min
- Fair skin
- about 55 min
- Light brown skin
- about 80 min
- Olive skin
- about 100 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Portland, Oregon: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Portland, Oregon has about 12 rainy days with 106 mm of rain in total.
Wind and clouds in Portland, Oregon
How breezy and how cloudy Portland, Oregon is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Portland, Oregon typically peaks at 12 km/h during the day: Beaufort 3, light breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 60 % of the sky over Portland, Oregon: variable cloud, with about 4.8 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Portland, Oregon
How often the day gets hot in Portland, Oregon (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Portland, Oregon has about 0 hot days, with an average daytime high of 17 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Portland, Oregon
Snow is possible in Portland, Oregon, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Portland, Oregon.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Portland, Oregon
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
CoolOctober: nights around 8°. A duvet at night and a jumper for the evening.
The coolest nights are in January (2°), the warmest in August (15°). Nights are pleasant for sleeping (15 to 20 °C) in August. Nights fall below 8 °C on average from November to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 2 | 8° | 2° | 2.7 h | 18 | 175 |
| FebruaryFeb | 13 | 9° | 2° | 3.6 h | 16 | 134 |
| MarchMar | 24 | 12° | 3° | 4.3 h | 18 | 147 |
| AprilApr | 49 | 15° | 5° | 5.9 h | 16 | 109 |
| MayMay | 77 | 19° | 9° | 6.8 h | 11 | 71 |
| JuneJun | 91 | 22° | 11° | 8.4 h | 7 | 43 |
| JulyJul | 99 | 27° | 14° | 11.0 h | 2 | 8 |
| AugustAug | 96 | 28° | 15° | 9.7 h | 3 | 14 |
| SeptemberSep | 91 | 24° | 12° | 7.7 h | 6 | 44 |
| OctoberOct | 62 | 17° | 8° | 4.8 h | 12 | 106 |
| NovemberNov | 16 | 11° | 4° | 3.0 h | 18 | 175 |
| DecemberDec | 0 | 8° | 2° | 2.3 h | 19 | 204 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
45.52° N, 122.68° W · 12 m · America/Los_Angeles
Best time to visit Portland, Oregon
The best time to visit Portland, Oregon is from June to September. For sightseeing, day trips and hiking, conditions are most comfortable from May to September. Rain is most frequent from October to April; the wettest month is December with 204 mm.
Portland, Oregon through the seasons
How the weather changes over the seasons, with averages for each.
Portland, Oregon in spring
Mar – May
Fair
- 12–19 °C by day
- 6 h of sun a day
- 45 rainy days in all
Portland, Oregon in summer
Jun – Aug
Excellent
- 22–28 °C by day
- 10 h of sun a day
- 11 rainy days in all
Portland, Oregon in autumn
Sep – Nov
Fair
- 11–24 °C by day
- 5 h of sun a day
- 36 rainy days in all
Portland, Oregon in winter
Dec – Feb
Poor
- 8–9 °C by day
- 3 h of sun a day
- 52 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Portland, Oregon for you.
Your best months: June – July, September
Based on the climate averages; tap a month to see its details.
Compare two months in Portland, Oregon
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
July has the better holiday weather in Portland, Oregon: score 99 against 62. In July, days are 10 °C warmer than in October. July has 10 fewer rainy days. The sun shines 6 hours longer a day in July.
| Month | October | July |
|---|---|---|
| Weather score | 62 | 99better |
| Day high | 17° | 27° |
| Night low | 8° | 14° |
| Sunshine | 4.8 h | 11.0 hbetter |
| Rainy days | 12 | 2better |
| Rainfall | 106 mm | 8 mmbetter |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May – Sep
15–28 °C and not too much rain
Rainy months
Oct – Apr
12 or more rainy days
Portland, Oregon month by month
The typical weather for every month at a glance.
2January8° · 3 h
In January, Portland, Oregon is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 3 hours a day. It rains often – on about 18 days, adding up to 175 mm. All in all, January is not an ideal month for a holiday in Portland, Oregon.
Portland, Oregon in January13February9° · 4 h
In February, Portland, Oregon is cold: daytime highs average 9 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 4 hours a day. It rains often – on about 16 days, adding up to 134 mm. Snow falls on about 2 days. All in all, February is not an ideal month for a holiday in Portland, Oregon.
Portland, Oregon in February24March12° · 4 h
In March, Portland, Oregon is cool: daytime highs average 12 °C, and nights cool down to about 3 °C. Expect around 4 hours of sunshine a day. It rains often – on about 18 days, adding up to 147 mm. All in all, March is not an ideal month for a holiday in Portland, Oregon.
Portland, Oregon in March49April15° · 6 h
In April, Portland, Oregon is cool: daytime highs average 15 °C, and nights cool down to about 5 °C. Expect around 6 hours of sunshine a day. It rains often – on about 16 days, adding up to 109 mm. All in all, April is a so-so month for a holiday in Portland, Oregon.
Portland, Oregon in April77May19° · 7 h
In May, Portland, Oregon is mild: daytime highs average 19 °C, and nights cool down to about 9 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 71 mm in total. All in all, May is a good month for a holiday in Portland, Oregon.
Portland, Oregon in May91June22° · 8 h
In June, Portland, Oregon is warm: daytime highs average 22 °C, and nights cool down to about 11 °C. The sun shines for around 8 hours a day. Rain falls on about 7 days, adding up to 43 mm. All in all, June is an excellent month for a holiday in Portland, Oregon.
Portland, Oregon in June99July27° · 11 h
In July, Portland, Oregon is hot: daytime highs average 27 °C, and nights cool down to about 14 °C. With around 11 hours of sunshine a day, there is plenty of sun. It hardly ever rains. On about 9 days the thermometer climbs to 30 °C or more. All in all, July is an excellent month for a holiday in Portland, Oregon.
Portland, Oregon in July96August28° · 10 h
In August, Portland, Oregon is hot: daytime highs average 28 °C, and nights cool down to about 15 °C. With around 10 hours of sunshine a day, there is plenty of sun. Rain is rare: about 3 days bring 14 mm in total. On about 10 days the thermometer climbs to 30 °C or more. All in all, August is an excellent month for a holiday in Portland, Oregon.
Portland, Oregon in August91September24° · 8 h
In September, Portland, Oregon is warm: daytime highs average 24 °C, and nights cool down to about 12 °C. The sun shines for around 8 hours a day. Rain falls on about 6 days, adding up to 44 mm. All in all, September is an excellent month for a holiday in Portland, Oregon.
Portland, Oregon in September62October17° · 5 h
In October, Portland, Oregon is mild: daytime highs average 17 °C, and nights cool down to about 8 °C. Expect around 5 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 106 mm in total. All in all, October is a good month for a holiday in Portland, Oregon.
Portland, Oregon in October16November11° · 3 h
In November, Portland, Oregon is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 3 hours a day. It rains often – on about 18 days, adding up to 175 mm. All in all, November is not an ideal month for a holiday in Portland, Oregon.
Portland, Oregon in November0December8° · 2 h
In December, Portland, Oregon is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sun is scarce, with only about 2 hours a day. It rains often – on about 19 days, adding up to 204 mm. Snow falls on about 2 days. All in all, December is not an ideal month for a holiday in Portland, Oregon.
Portland, Oregon in DecemberPortland, Oregon compared
Put Portland, Oregon side by side with another destination.
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Portland vs. Cannon Beach
In October Portland has the better holiday weather (score 62 vs. 50). During the day Cannon Beach is 2 °C cooler than Portland.
| in October | Portland | Cannon Beach |
|---|---|---|
| Holiday score | 62 | 50 |
| Daytime high | 17° | 15° |
| Sea | – | 13° |
| Sunshine | 5 h | 5 h |
| Rainy days | 12 | 14 |
| Best time | Jun – Sep | Jul – Aug |
Through the year
USA in October: the best places
In October, Portland, Oregon ranks 23 among the 31 nearest destinations in this country.
- Las Vegas26°99
- 2Mariposa (Yosemite)23°98
- 3Los Angeles26°19°98
- 4Sacramento25°96
- 5San Jose23°96
- 6Reno19°95
- 7Napa Valley24°95
- 8Oakland21°14°95
- 23PortlandThis page17°62
Planning a trip to Portland, Oregon
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Portland, Oregon in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Portland, Oregon has its best school-holiday weather during the summer holidays (score 97) and its weakest during the Christmas holidays (score 1).
- 42
Easter holidays
Mar – Apr
Fair
- 14 °C by day
- 5.4 h of sun a day
- 16 rainy days a month
Keep in mind: Frequent rain
- 80
May half-term
May – Jun
Excellent
- 19 °C by day
- 7.1 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 97
Summer holidays
Jul – Aug
ExcellentBest holidays
- 27 °C by day
- 10.2 h of sun a day
- 2 rainy days a month
Good for: Sightseeing & walks
- 62
October half-term
Oct
Good
- 17 °C by day
- 4.8 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
- 1
Christmas holidays
Dec – Jan
Poor
- 8 °C by day
- 2.5 h of sun a day
- 18 rainy days a month
Keep in mind: Frequent rain
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 10 h
- Distance
- 7,900 km
- Time zone
- UTC−7
- Jet lag
- About 5 days (8 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Portland, Oregon
When is the best time to visit Portland, Oregon?
The best time to visit Portland, Oregon is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Portland, Oregon?
August is the warmest month, with average highs of 28 °C and nights around 15 °C. December is the coolest month at 8 °C.
When does it rain most in Portland, Oregon?
Rain is most frequent from October to April; the wettest month is December with 204 mm. The driest month is July with 8 mm.
How many hours of sunshine does Portland, Oregon get?
Portland, Oregon gets around 2,140 hours of sunshine a year. The sunniest month is July with 11.0 hours a day; in December there are 2.3 hours a day.
What time zone is Portland, Oregon in?
Portland, Oregon uses the time zone America/Los_Angeles: UTC−8 in January and UTC−7 in July.
How long is the flight from London to Portland, Oregon?
A nonstop flight from London to Portland, Oregon takes about 10 h, for a straight-line distance of about 7,900 km.
Which school holidays are best for Portland, Oregon?
Portland, Oregon has its best school-holiday weather during the summer holidays (score 97) and its weakest during the Christmas holidays (score 1). Holiday ratings (0–100): Easter holidays 42, May half-term 80, Summer holidays 97, October half-term 62, Christmas holidays 1.
Near Portland, Oregon
Other destinations close by.
Places with a climate like Portland, Oregon
Destinations whose weather through the year is closest to Portland, Oregon's – good alternatives.