Seattle vs Portland: which is sunnier?
🇺🇸 United States vs 🇺🇸 United States · 208 km apart · long-term climate normals (NASA POWER, 2001–2020)
Portland is the sunnier overall: about 2,058 hours of sunshine a year to Seattle's 1,896. Portland has the higher Sunshine Score in 8 of 12 months; the other 4 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.
At a glance
| Seattle | Portland | |
|---|---|---|
| Sunshine hours / year | 1,896 | 2,058 |
| Sunniest month | July (86/100) | July (89/100) |
| Nov–Feb average score | 3/100 | 5/100 |
| Jun–Aug average score | 83/100 | 86/100 |
| Rain / year | 1,230 mm | 1,484 mm |
| Peak midday UV | 7 (high) | 7 (high) |
Seattle vs Portland month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Seattle | Portland | Seattle | Portland | Seattle | Portland | |
| January | 0 | 0 | 7° | 8° | 174 | 216 |
| February | 0 | 5 | 8° | 9° | 108 | 144 |
| March | 11 | 21 | 10° | 12° | 138 | 178 |
| April | 30 | 40 | 13° | 15° | 95 | 119 |
| May | 58 | 70 | 17° | 19° | 70 | 79 |
| June | 80 | 81 | 20° | 22° | 51 | 55 |
| July | 86 | 89 | 23° | 28° | 19 | 11 |
| August | 84 | 87 | 23° | 29° | 29 | 20 |
| September | 79 | 80 | 20° | 25° | 58 | 57 |
| October | 39 | 55 | 15° | 18° | 125 | 137 |
| November | 10 | 16 | 10° | 11° | 188 | 217 |
| December | 0 | 0 | 6° | 7° | 175 | 251 |
The sunnier month by month: Jan even · Feb Portland · Mar Portland · Apr Portland · May Portland · Jun even · Jul Portland · Aug Portland · Sep even · Oct Portland · Nov Portland · Dec even.
When to pick which
- November–February: too close to call — Seattle averages 3/100, Portland 5/100. Daytime highs are similar (8°C vs 9°C). See the winter sun ranking.
- March–May: Portland (average score 44/100 vs 33). Portland is the warmer, around 15°C daytime highs vs 13°C.
- June–August: Portland (average score 86/100 vs 83). Portland is the warmer, around 26°C daytime highs vs 22°C.
- September–October: Portland (average score 68/100 vs 59). Portland is the warmer, around 22°C daytime highs vs 18°C.
Full month-by-month guides: Seattle weather by month · Portland weather by month · Best time to visit United States.
More comparisons: Seattle vs Victoria · Seattle vs Abbotsford · Seattle vs Bellingham · Portland vs Eugene · Portland vs Medford · Portland vs Redmond · all head-to-heads