Washington, USA
Seattle cruise weather by month
What to expect when your ship is in Seattle in any month: temperatures, how often it rains, wind, sea temperature and wave heights.
- 76°Fwarmest average high (July)
- 46°Fcoolest average high (December)
- 5%fewest rain days (July)
- 67%most rain days (December)
Weather in Seattle right now
Weather in Seattle by month
Average highs run from 46°F (8°C) in December to 76°F (24°C) in July. Rain falls on the fewest days in July and the most in December. Sea temperature and wave heights are for the water just off the port.
| Month | High / low | Rain days | Wind | Sea temp | Typical seas |
|---|---|---|---|---|---|
| January | 46 / 36°F8 / 2°C | 52% | 11 mph18 km/h | – | under 1 ft (0.1 m)Smooth; rougher days up to 1 ft |
| February | 47 / 36°F8 / 2°C | 45% | 12 mph19 km/h | – | 1 ft (0.2 m)Smooth; rougher days up to 2 ft |
| March | 52 / 39°F11 / 4°C | 50% | 12 mph20 km/h | – | 1 ft (0.2 m)Smooth; rougher days up to 1 ft |
| April | 55 / 42°F13 / 6°C | 51% | 13 mph21 km/h | – | 1 ft (0.2 m)Smooth; rougher days up to 1 ft |
| May | 62 / 48°F17 / 9°C | 38% | 12 mph20 km/h | – | under 1 ft (0.1 m)Smooth; rougher days up to 1 ft |
| June | 68 / 53°F20 / 12°C | 28% | 12 mph19 km/h | – | under 1 ft (0.1 m)Calm (rippled); rougher days up to 1 ft |
| July | 76 / 57°F24 / 14°C | 5% | 12 mph19 km/h | – | under 1 ft (0.1 m)Calm (rippled); rougher days up to 1 ft |
| August | 76 / 59°F24 / 15°C | 20% | 12 mph19 km/h | – | under 1 ft (0.1 m)Calm (rippled); rougher days up to 1 ft |
| September | 69 / 55°F21 / 13°C | 20% | 11 mph19 km/h | – | under 1 ft (0.1 m)Calm (rippled); rougher days up to 1 ft |
| October | 60 / 49°F16 / 9°C | 44% | 12 mph20 km/h | – | 1 ft (0.2 m)Smooth; rougher days up to 1 ft |
| November | 50 / 41°F10 / 5°C | 59% | 13 mph21 km/h | – | 1 ft (0.2 m)Smooth; rougher days up to 2 ft |
| December | 46 / 38°F8 / 3°C | 67% | 13 mph22 km/h | – | 1 ft (0.2 m)Smooth; rougher days up to 2 ft |
Check the forecast for your sailing
Upcoming cruises in Seattle
3 ships from 2 cruise lines are scheduled here, 4 visits in total. The next 4:
| Date | Ship | Stop | Sailing |
|---|---|---|---|
| Sat, Oct 102026 | Norwegian BlissNorwegian Cruise Line | Ends here | 7 nights from Seattle |
| Sun, Oct 112026 | NoordamHolland America Line | Ends here | 7 nights from Seattle |
| Sun, Oct 112026 | NoordamHolland America Line | Departs | 34 nights from Seattle |
| Sun, Oct 112026 | Norwegian EncoreNorwegian Cruise Line | Ends here | 7 nights from Seattle |
Ships that visit Seattle
- NoordamHolland America Line
- Norwegian BlissNorwegian Cruise Line
- Norwegian EncoreNorwegian Cruise Line
Nearby cruise ports
Wave heights are significant wave height on the Douglas sea state scale. What the numbers mean for a cruise. Sources and method are on the about page.