New Brunswick, Canada

Saint John cruise weather by month

What to expect when your ship is in Saint John in any month: temperatures, how often it rains, wind, sea temperature and wave heights.

73°Fwarmest average high (July)
31°Fcoolest average high (January)
22%fewest rain days (September)
49%most rain days (March)

Weather in Saint John by month

Average highs run from 31°F (0°C) in January to 73°F (23°C) in July. Rain falls on the fewest days in September and the most in March. Sea temperature and wave heights are for the water just off the port.

Typical conditions, 2022–2025 climate record (ECMWF). Rain days are days with at least 1 mm of rain or melted snow. These are averages, not a forecast.
Month	High / low	Rain days	Wind	Sea temp	Typical seas
January	31 / 15°F0 / -9°C	45%	15 mph24 km/h	38°F3°C	4 ft (1.1 m)Slight; rougher days up to 8 ft
February	32 / 15°F0 / -9°C	35%	16 mph25 km/h	35°F2°C	4 ft (1.1 m)Slight; rougher days up to 8 ft
March	40 / 26°F5 / -3°C	49%	14 mph23 km/h	37°F3°C	3 ft (1.0 m)Slight; rougher days up to 6 ft
April	50 / 35°F10 / 1°C	41%	14 mph23 km/h	41°F5°C	3 ft (0.8 m)Slight; rougher days up to 5 ft
May	60 / 44°F15 / 7°C	31%	13 mph21 km/h	47°F8°C	2 ft (0.7 m)Slight; rougher days up to 4 ft
June	66 / 53°F19 / 12°C	45%	12 mph19 km/h	54°F12°C	2 ft (0.7 m)Slight; rougher days up to 4 ft
July	73 / 60°F23 / 16°C	38%	11 mph18 km/h	60°F16°C	2 ft (0.7 m)Slight; rougher days up to 4 ft
August	72 / 60°F22 / 15°C	33%	11 mph17 km/h	63°F17°C	2 ft (0.6 m)Slight; rougher days up to 4 ft
September	68 / 55°F20 / 13°C	22%	11 mph18 km/h	61°F16°C	2 ft (0.5 m)Slight; rougher days up to 4 ft
October	59 / 47°F15 / 8°C	32%	12 mph19 km/h	56°F13°C	2 ft (0.6 m)Slight; rougher days up to 5 ft
November	46 / 33°F8 / 1°C	35%	15 mph24 km/h	48°F9°C	4 ft (1.1 m)Slight; rougher days up to 6 ft
December	38 / 25°F3 / -4°C	41%	15 mph25 km/h	42°F6°C	4 ft (1.1 m)Slight; rougher days up to 8 ft

Check the forecast for your sailing

Upcoming cruises in Saint John

13 ships from 11 cruise lines are scheduled here, 19 visits in total. The next 15:

Date	Ship	Stop	Sailing
Fri, Oct 92026	AIDAdivaAIDA Cruises	Calls	12 nights from New York City
Sat, Oct 102026	Explora IIIExplora Journeys	Calls	8 nights from New York City
Sat, Oct 102026	Oceania VistaOceania Cruises	Calls	11 nights from New York City
Sat, Oct 102026	Sapphire PrincessPrincess Cruises	Calls	10 nights from Québec City
Sun, Oct 112026	Azamara JourneyAzamara	Calls	12 nights from New York City
Sun, Oct 112026	Viking MarsViking	Calls	14 nights from Montréal
Mon, Oct 122026	Vision of the SeasRoyal Caribbean	Calls	9 nights from Baltimore
Wed, Oct 142026	Majestic PrincessPrincess Cruises	Calls	7 nights from New York City
Thu, Oct 152026	Norwegian BreakawayNorwegian Cruise Line	Calls	7 nights from Boston
Fri, Oct 162026	Sapphire PrincessPrincess Cruises	Calls	10 nights from Boston
Sat, Oct 172026	Seven Seas SplendorRegent Seven Seas Cruises	Calls	11 nights from Montréal
Wed, Oct 212026	Independence of the SeasRoyal Caribbean	Calls	9 nights from New York City
Wed, Oct 212026	Majestic PrincessPrincess Cruises	Calls	7 nights from New York City
Thu, Oct 222026	Crystal SymphonyCrystal Cruises	Calls	10 nights from Montréal
Thu, Oct 222026	Seven Seas SplendorRegent Seven Seas Cruises	Calls	10 nights from New York City

Ships that visit Saint John

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.

Saint John cruise weather by month

Weather in Saint John right now

Weather in Saint John by month

Upcoming cruises in Saint John

Ships that visit Saint John

Nearby cruise ports