Seattle vs Portland: Weather & Climate Compared
🇺🇸 Seattle, United States · 🇺🇸 Portland, United States
Warmer overall
Portland
Sunnier
Portland
More rainy days
Seattle
Seattle vs Portland weather right now
At this moment, Portland is the warmer of the two by 2°F (1°C).
The short answer
If warmth is the deciding factor, Portland wins: 53°F (12°C) on the annual mean against 52°F (11°C) in Seattle, a gap of 1.1°F (0.6°C).
Head to head
- Sunshine: Portland is brighter, averaging 8.2 hours of sun a day to Seattle's 8.0.
- Rain: Seattle records roughly 151 days of measurable precipitation annually; Portland sees 148.
- Snow: Portland is the snowy one, averaging about 9 snow days a year.
- Peak heat: the hottest stretch lands in August for Seattle (77°F (25°C)) and August for Portland (84°F (29°C)).
- Coldest nights: winter bottoms out at 37°F (3°C) in Seattle (December) and 36°F (2°C) in Portland (December).
Seattle vs Portland month by month
| Month | Seattle high / low | Portland high / low | Seattle rain days | Portland rain days |
|---|---|---|---|---|
| January | 47° / 37° | 47° / 36° | 18 | 19 |
| February | 47° / 36° | 48° / 35° | 15 | 16 |
| March | 52° / 39° | 54° / 38° | 15 | 17 |
| April | 57° / 42° | 59° / 42° | 14 | 15 |
| May | 64° / 49° | 67° / 48° | 10 | 11 |
| June | 70° / 54° | 75° / 53° | 8 | 8 |
| July | 76° / 58° | 83° / 58° | 3 | 2 |
| August | 77° / 59° | 84° / 59° | 5 | 3 |
| September | 69° / 55° | 75° / 54° | 10 | 8 |
| October | 59° / 48° | 63° / 47° | 14 | 12 |
| November | 50° / 41° | 52° / 40° | 18 | 17 |
| December | 45° / 37° | 46° / 36° | 19 | 19 |
Who's warmer, month by month?
There is no seasonal flip here: Portland holds the temperature lead in all twelve months of the year. The gap is widest in August, when Portland's afternoons run about 8°F (4°C) ahead, and narrowest in January, when the two nearly meet.
Sunshine, daylight and rain chance
| Month | Seattle sun | Portland sun | Seattle daylight | Portland daylight | Seattle wet-day chance | Portland wet-day chance |
|---|---|---|---|---|---|---|
| January | 4.1 h | 4.1 h | 8.8 h | 9.1 h | 59% | 61% |
| February | 5.1 h | 5.2 h | 10.2 h | 10.3 h | 54% | 58% |
| March | 7.5 h | 7.4 h | 11.8 h | 11.8 h | 49% | 55% |
| April | 9.2 h | 8.9 h | 13.6 h | 13.5 h | 48% | 51% |
| May | 10.1 h | 10.1 h | 15.1 h | 14.9 h | 32% | 35% |
| June | 11.7 h | 12.0 h | 16.0 h | 15.7 h | 28% | 26% |
| July | 12.7 h | 13.2 h | 15.6 h | 15.3 h | 11% | 7% |
| August | 11.5 h | 12.1 h | 14.3 h | 14.1 h | 16% | 9% |
| September | 9.2 h | 9.9 h | 12.5 h | 12.5 h | 35% | 26% |
| October | 6.5 h | 7.1 h | 10.7 h | 10.8 h | 46% | 40% |
| November | 4.7 h | 5.1 h | 9.2 h | 9.4 h | 59% | 57% |
| December | 3.6 h | 3.8 h | 8.4 h | 8.7 h | 62% | 63% |
Seasons compared
| Months | Seattle high / low | Portland high / low | Seattle rain days | Portland rain days | Seattle sun | Portland sun |
|---|---|---|---|---|---|---|
| December - February | 46° / 37° | 47° / 36° | 53 | 55 | 4.3 h | 4.4 h |
| March - May | 58° / 43° | 60° / 43° | 39 | 43 | 8.9 h | 8.8 h |
| June - August | 74° / 57° | 81° / 57° | 17 | 13 | 12.0 h | 12.4 h |
| September - November | 59° / 48° | 63° / 47° | 42 | 37 | 6.8 h | 7.4 h |
Best months for sightseeing
Counting months with average highs between 64°F and 82°F (18-28°C) and fewer than 12 wet days:
- Seattle: June, July, August, September (4 months)
- Portland: May, June, September (3 months)
Both cities are at their most comfortable in June, September, the easiest window for a trip that takes in both.
Records, distance and time difference
- Seattle records (2015-2024): high of 100° in June, low of 14° in January.
- Portland records (2015-2024): high of 115° in June, low of 6° in January.
- Distance: Seattle and Portland are about 145 miles (233 km) apart as the crow flies.
- Time difference: the two cities share the same local time right now.
Seattle vs Portland: quick answers
Is Seattle warmer than Portland?
No - Portland is warmer on annual average by about 1.1°F (0.6°C). The month-by-month table shows where the gap widens.
Which city is sunnier, Seattle or Portland?
Portland, with 8.2 hours of average daily sunshine against 8.0 in Seattle.
Which city gets more rain?
Seattle - roughly 151 days with measurable precipitation a year, compared with 148 in Portland.
Dig deeper
More comparisons with Seattle