Winter
Dec → Feb8 to 11°
nights 2 to 3°
- 14 rainy days · 123 mm
When is the best time to visit Portland, Oregon?
- Jan9°not recommended
- Feb11°not recommended
- Mar14°not recommended
- Apr17°not recommended
- May21°fair
- Jun24°recommended
- Jul28°recommended
- Aug28°recommended
- Sep25°recommended
- Oct18°fair
- Nov12°not recommended
- Dec8°not recommended
RecommendedFairNot recommended· afternoon temperature
The weather in Portland, Oregon, month by month
The table of averages, month by month
| Month | High | Low | Rainfall | Rainy days | Best |
|---|---|---|---|---|---|
| January | 9° | 2° | 128 mm | 15 d | |
| February | 11° | 3° | 94 mm | 12 d | |
| March | 14° | 4° | 101 mm | 14 d | |
| April | 17° | 7° | 73 mm | 12 d | |
| May | 21° | 10° | 64 mm | 10 d | |
| June | 24° | 12° | 41 mm | 6 d | ✓ |
| July | 28° | 15° | 13 mm | 2 d | ✓ |
| August | 28° | 15° | 14 mm | 2 d | ✓ |
| September | 25° | 12° | 39 mm | 5 d | ✓ |
| October | 18° | 8° | 87 mm | 10 d | |
| November | 12° | 5° | 138 mm | 15 d | |
| December | 8° | 2° | 147 mm | 16 d |
The four seasons in Portland, Oregon, in figures
What the 2015-2024 averages (Portland Airport (Oregon)) show, season by season, to compare at a glance instead of reading twelve rows of a table.
Spring
Mar → May14 to 21°
nights 4 to 10°
- 12 rainy days · 79 mm
Summer
Jun → Aug24 to 28°
nights 12 to 15°
- 3 rainy days · 23 mm
Autumn
Sep → Nov12 to 25°
nights 5 to 12°
- 10 rainy days · 88 mm
Book early for June to September
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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Daylight in Portland, Oregon, month by month
The time between sunrise and sunset, from shortest to longest. Not to be confused with the sunshine hours in the table above, which count clear skies. In June there are 15h40 of daylight, in December 8h43, a difference of 6h58.
9h04Jan
10h18Feb
11h47Mar
13h28Apr
14h53May
15h40Jun
15h21Jul
14h06Aug
12h28Sep
10h50Oct
9h25Nov
8h43Dec
Calculated for the latitude of the reference point "Portland Airport (Oregon)" (45.59°). Values on the 15th of each month, local solar time.
What to do in Portland, Oregon, month by month
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sightseeing & walks | ||||||||||||
| Long days |
favourablewith compromisesunfavourable
- Sightseeing & walks: February, April, May, June, July, August, September, October
- Long days: May, June, July, August
Grid derived from the climate averages (temperature, rainfall), not from an opinion.
Travelling off-peak
Month by month, in detail
January
Not recommended9°2° at night
- 128 mm · 15 d
Low season, lower prices
February
Not recommended11°3° at night
- 94 mm · 12 d
Low season, lower prices
March
Not recommended14°4° at night
- 101 mm · 14 d
Low season, lower prices
April
Not recommended17°7° at night
- 73 mm · 12 d
Low season, lower prices
May
Fair21°10° at night
- 64 mm · 10 d
Low season, lower prices
June
Recommended24°12° at night
- 41 mm · 6 d
Busy, without the crush
July
Recommended28°15° at night
- 13 mm · 2 d
High season, book early
August
Recommended28°15° at night
- 14 mm · 2 d
High season, book early
September
Recommended25°12° at night
- 39 mm · 5 d
Busy, without the crush
October
Fair18°8° at night
- 87 mm · 10 d
Low season, lower prices
November
Not recommended12°5° at night
- 138 mm · 15 d
Low season, lower prices
December
Not recommended8°2° at night
- 147 mm · 16 d
Quiet, then the holidays
Read the twelve months in detail
January. Cool: 9 °C at best, 2 °C at night. A very wet month, 128 mm of rain over 15 days. Low season: fewer people, lower prices.
February. Cool: 11 °C at best, 3 °C at night. Expect 12 days of rain in the month (94 mm). Low season: fewer people, lower prices.
March. Cool: 14 °C at best, 4 °C at night. A very wet month, 101 mm of rain over 14 days. Low season: fewer people, lower prices.
April. Cool: 17 °C at best, 7 °C at night. Expect 12 days of rain in the month (73 mm). Low season: fewer people, lower prices.
May. Mild, 21 °C in the afternoon and 10 °C early in the morning. Expect 10 days of rain in the month (64 mm). Low season: fewer people, lower prices.
June. Mild, 24 °C in the afternoon and 12 °C early in the morning. Rain stays light: 41 mm over 6 days. Busy season, without the crush.
July. 28 °C in the afternoon and 15 °C at night. Hardly any rain (13 mm over 2 days). High season: book early.
August. 28 °C in the afternoon and 15 °C at night. Hardly any rain (14 mm over 2 days). High season: book early.
September. 25 °C in the afternoon and 12 °C at night. Rain stays light: 39 mm over 5 days. Busy season, without the crush.
October. Mild, 18 °C in the afternoon and 8 °C early in the morning. Expect 10 days of rain in the month (87 mm). Low season: fewer people, lower prices.
November. Cool: 12 °C at best, 5 °C at night. A very wet month, 138 mm of rain over 15 days. Low season: fewer people, lower prices.
December. Cool: 8 °C at best, 2 °C at night. A very wet month, 147 mm of rain over 16 days. Quiet at the start of the month, then busier as the holidays approach.
Same season, other ideas
Their best time overlaps with this one: worth comparing before you book.
Frequently asked questions
When is the best time to visit Portland, Oregon?
June to September: over these months, average highs range from 24 to 28 °C, with 4 days of rain a month on average (2015-2024 averages, Portland Airport (Oregon)).
Which month should you avoid in Portland, Oregon?
December: it is the wettest of the months to avoid, with 147 mm over 16 days of rain on average over 2015-2024 at the reference point (Portland Airport (Oregon)).
What is the hottest month in Portland, Oregon?
July, with 28 °C on average in the afternoon and 15 °C at night. 2015-2024 averages (Portland Airport (Oregon)).
What is the coldest month in Portland, Oregon?
December, with 8 °C at best during the day and 2 °C at night. 2015-2024 averages (Portland Airport (Oregon)).
What is the driest month in Portland, Oregon?
July: 13 mm over 2 days of rain, against 147 mm in December, the wettest month.
Does it get cold at night in Portland, Oregon?
The gap between day and night reaches 13 °C in July: 28 °C in the afternoon, 15 °C at dawn. Pack an extra layer, even in high season.
Plan this trip
📒 The free printable Portland, Oregon guide: itinerary, map, where to sleep→
🧭 When to visit the American West: the country overview→
🗓️ Best time to visit: all our destinations→
Compare with other destinations
Photos: Michael Barera / CC BY-SA 4.0 (Wikimedia Commons) · Vulturesong / CC0 (Wikimedia Commons) · Another Believer / CC BY-SA 3.0 (Wikimedia Commons) · EncMstr / CC BY-SA 3.0 (Wikimedia Commons) · Diego Delso / CC BY-SA 4.0 (Wikimedia Commons) · Alex Agrico / Pexels · Daniel Schwen / CC BY-SA 4.0 (Wikimedia Commons) · M. O. Stevens / CC BY-SA 3.0 (Wikimedia Commons) · William Beutler from Washinton, DC, USA / CC BY 2.0 (Wikimedia Commons)