What is the best month to cruise to Saint John?

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.

Junebest month, rated 87 of 100
74°Fwarmest average high (July)
31°Fcoolest average high (January)
23%fewest rain days (September)
37%most rain days (December)

Best time to cruise to Saint John

The best month for cruise weather in Saint John is June, rated 87 out of 100 (Excellent): pleasant temperatures and calm seas. September scores nearly as well. The weakest month is January (26, Poor): cool weather and frequent gales.

How the rating works

Each month scores out of 100 from five things: the average high (30 points; 64 to 82°F is full marks), how often it rains (25), how rough the sea gets (15), how warm the water is where swimming matters (10) and storms (20: how often a tropical storm passed within 90 miles since 1980, or how often gales struck in the 20-year record, whichever is worse). A part with no data is left out and the rest scaled up. The weights are a judgment about what makes a stop pleasant, not a measurement. Crowds and fares are not included.

Weather in Saint John by month

Average highs run from 31°F (0°C) in January to 74°F (24°C) in July. Rain falls on the fewest days in September and the most in December. Sea temperature and wave heights are for the water just off the port.

Typical conditions, 2006–2025 climate record (ECMWF). Rain days are days with at least 1 mm of rain or melted snow. These are averages, not a forecast.
Month	Rating	High / low	Rain days	Wind	Sea temp	Typical seas	Sun
January	26Poor	31 / 14°F0 / -10°C1 in 10 days: 18–44°F	33%	15 mph24 km/h	38°F3°C	4 ft (1.1 m)Slight; rougher days up to 8 ft	5.3 hrs75% humidity
February	28Poor	32 / 14°F0 / -10°C1 in 10 days: 20–42°F	31%	15 mph24 km/h	35°F2°C	3 ft (1.0 m)Slight; rougher days up to 7 ft	6.7 hrs71% humidity
March	36Poor	39 / 22°F4 / -6°C1 in 10 days: 30–47°F	32%	14 mph23 km/h	37°F3°C	3 ft (1.0 m)Slight; rougher days up to 6 ft	7.7 hrs68% humidity
April	53Poor	50 / 32°F10 / 0°C1 in 10 days: 44–56°F	35%	15 mph24 km/h	41°F5°C	3 ft (0.9 m)Slight; rougher days up to 6 ft	8.3 hrs71% humidity
May	77Good	60 / 42°F16 / 5°C1 in 10 days: 55–66°F	32%	13 mph21 km/h	47°F8°C	2 ft (0.7 m)Slight; rougher days up to 5 ft	9.3 hrs75% humidity
June	87Excellent	68 / 51°F20 / 10°C1 in 10 days: 63–72°F	37%	12 mph19 km/h	54°F12°C	2 ft (0.7 m)Slight; rougher days up to 4 ft	9.3 hrs81% humidity
July	81Good	74 / 58°F24 / 14°C1 in 10 days: 71–78°F	28%	10 mph17 km/h	60°F16°C	2 ft (0.7 m)Slight; rougher days up to 4 ft	10.0 hrs84% humidity
August	80Good	74 / 58°F23 / 14°C1 in 10 days: 71–78°F	28%	11 mph17 km/h	63°F17°C	2 ft (0.6 m)Slight; rougher days up to 4 ft	9.8 hrs83% humidity
September	83Good	69 / 52°F20 / 11°C1 in 10 days: 64–73°F	23%	12 mph19 km/h	61°F16°C	2 ft (0.7 m)Slight; rougher days up to 5 ft	8.5 hrs80% humidity
October	60Fair	59 / 43°F15 / 6°C1 in 10 days: 52–65°F	30%	13 mph21 km/h	56°F13°C	2 ft (0.7 m)Slight; rougher days up to 6 ft	7.0 hrs76% humidity
November	44Poor	46 / 32°F8 / 0°C1 in 10 days: 37–56°F	31%	14 mph22 km/h	48°F9°C	3 ft (1.0 m)Slight; rougher days up to 6 ft	5.3 hrs75% humidity
December	29Poor	38 / 23°F3 / -5°C1 in 10 days: 26–50°F	37%	15 mph24 km/h	42°F6°C	3 ft (1.0 m)Slight; rougher days up to 8 ft	4.8 hrs76% humidity

These are averages for 2006–2025 (20 years) from ECMWF’s ERA5 climate record, adjusted to local detail with a higher-resolution ECMWF analysis and Météo-France waves, then checked against weather-station records from NOAA (GHCN-Daily). At this port they were compared with the Saint John A station, 9 miles away. Before the figures were adjusted to it, highs differed by about 1.4°F and rain days by 7 percentage points; after adjusting they sit close to its record.

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. What the numbers mean for a cruise. Sources and method are on the about page.