Maine, USA
Portland cruise weather by month
What to expect when your ship is in Portland in any month: temperatures, how often it rains, wind, sea temperature and wave heights.
- 82°Fwarmest average high (July)
- 33°Fcoolest average high (January)
- 24%fewest rain days (September)
- 43%most rain days (June)
Weather in Portland right now
Weather in Portland by month
Average highs run from 33°F (1°C) in January to 82°F (28°C) in July. Rain falls on the fewest days in September and the most in June. Sea temperature and wave heights are for the water just off the port.
| Month | High / low | Rain days | Wind | Sea temp | Typical seas |
|---|---|---|---|---|---|
| January | 33 / 19°F1 / -7°C | 34% | 13 mph21 km/h | 40°F5°C | 3 ft (0.9 m)Slight; rougher days up to 6 ft |
| February | 36 / 18°F2 / -8°C | 28% | 13 mph21 km/h | 38°F3°C | 3 ft (0.9 m)Slight; rougher days up to 5 ft |
| March | 44 / 28°F7 / -2°C | 41% | 13 mph21 km/h | 39°F4°C | 3 ft (0.9 m)Slight; rougher days up to 5 ft |
| April | 54 / 37°F12 / 3°C | 38% | 12 mph20 km/h | 44°F7°C | 3 ft (0.8 m)Slight; rougher days up to 5 ft |
| May | 64 / 48°F18 / 9°C | 34% | 11 mph18 km/h | – | 2 ft (0.7 m)Slight; rougher days up to 5 ft |
| June | 73 / 57°F23 / 14°C | 43% | 10 mph16 km/h | – | 2 ft (0.7 m)Slight; rougher days up to 4 ft |
| July | 82 / 65°F28 / 18°C | 40% | 10 mph16 km/h | – | 2 ft (0.7 m)Slight; rougher days up to 3 ft |
| August | 78 / 62°F26 / 17°C | 40% | 9 mph15 km/h | – | 2 ft (0.6 m)Slight; rougher days up to 4 ft |
| September | 72 / 56°F22 / 13°C | 24% | 9 mph15 km/h | – | 2 ft (0.7 m)Slight; rougher days up to 4 ft |
| October | 61 / 47°F16 / 8°C | 25% | 10 mph16 km/h | 57°F14°C | 3 ft (0.8 m)Slight; rougher days up to 5 ft |
| November | 49 / 35°F9 / 2°C | 26% | 12 mph20 km/h | 50°F10°C | 3 ft (0.8 m)Slight; rougher days up to 5 ft |
| December | 40 / 27°F4 / -3°C | 35% | 11 mph18 km/h | 45°F7°C | 3 ft (1.0 m)Slight; rougher days up to 6 ft |
Check the forecast for your sailing
Upcoming cruises in Portland
14 ships from 12 cruise lines are scheduled here, 20 visits in total. The next 15:
Ships that visit Portland
- Majestic PrincessPrincess Cruises
- ZuiderdamHolland America Line
- Sapphire PrincessPrincess Cruises
- Silver ShadowSilversea Cruises
- AIDAdivaAIDA Cruises
- Azamara JourneyAzamara
- Celebrity SilhouetteCelebrity Cruises
- Crystal SymphonyCrystal Cruises
- Explora IIIExplora Journeys
- Norwegian JewelNorwegian Cruise Line
- Independence of the SeasRoyal Caribbean
- Vision of the SeasRoyal Caribbean
- Seabourn OvationSeabourn
- Star PrideWindstar Cruises
Nearby cruise ports
- RocklandMaine, USA
- BostonMassachusetts, USA
- Bar HarborMaine, USA
- Cape Cod CanalMassachusetts, USA
- NewportRhode Island, USA
- EastportMaine, USA
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.