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New Brunswick weather in September

Planning a journey to New Brunswick this September and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What is the weather like in New Brunswick in September?

New Brunswick is a region in Canada. September in New Brunswick generally has temperatures that range from moderate to pleasant, with precipitation levels ranging from moderate to high.

During the day temperatures vary from moderate in North Head at 17°C to pleasant in Saint Stephen at 21°C. At night it cools down to 9°C in Saint Stephen and 13°C in North Head.

In September, precipitation varies across different areas. From moderate rainfall in Edmundston with an average of 89 mm to high rainfall in North Head with 120 mm. Most areas experience a moderate amount of sunshine, with approximately 173 hours of sunlight expected in Moncton. This makes it neither too gloomy nor overly bright.

For specific regional insights in New Brunswick for September, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our New Brunswick climate page.

Where to go in New Brunswick in September

Find the average weather conditions in September for the most popular destinations in New Brunswick on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in New Brunswick

What is the weather like in September for the 5 most popular destinations in New Brunswick?

Average weather in Moncton

In September Moncton generally has pleasant temperatures with maximum daytime temperatures around 21°C, minimum nighttime temperatures around 10°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Moncton
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
14°C 
241 hours 
80 mm 
11 days 
21°C 
10°C 
173 hours 
97 mm 
11 days 
October   >> October
>>  
14°C 
4°C 
149 hours 
101 mm 
13 days 
Climate in Moncton

Average weather in Grand Manan Island

In September Grand Manan Island generally has moderate temperatures with maximum daytime temperatures around 17°C, minimum nighttime temperatures around 13°C and high monthly rainfall. So on average the conditions are unpleasant that month.

Grand Manan Island
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
19°C 
14°C 
86 mm 
11 days 
17°C 
13°C 
115 mm 
11 days 
October   >> October
>>  
13°C 
9°C 
138 mm 
12 days 
poor 
Climate in Grand Manan Island

Average weather in Saint John

In September Saint John generally has pleasant temperatures with maximum daytime temperatures around 18°C, minimum nighttime temperatures around 12°C and high monthly rainfall. So on average the conditions are tolerable that month.

Saint John
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
21°C 
14°C 
87 mm 
12 days 
18°C 
12°C 
115 mm 
11 days 
October   >> October
>>  
13°C 
7°C 
136 mm 
12 days 
poor 
Climate in Saint John

Average weather in Fredericton

In September Fredericton generally has pleasant temperatures with maximum daytime temperatures around 21°C, minimum nighttime temperatures around 9°C and high monthly rainfall. So on average the conditions are pleasant that month.

Fredericton
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
26°C 
13°C 
89 mm 
12 days 
21°C 
9°C 
100 mm 
11 days 
October   >> October
>>  
14°C 
3°C 
116 mm 
12 days 
Climate in Fredericton

Average weather in Saint Andrews

In September Saint Andrews generally has pleasant temperatures with maximum daytime temperatures around 21°C, minimum nighttime temperatures around 11°C and high monthly rainfall. So on average the conditions are pleasant that month.

Saint Andrews
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
15°C 
81 mm 
10 days 
21°C 
11°C 
101 mm 
10 days 
October   >> October
>>  
14°C 
6°C 
120 mm 
11 days 
Climate in Saint Andrews

Is your destination not in the list? Have a look at other destinations in New Brunswick, in Canada.

Is September the best time to visit New Brunswick?

We consider September to be one of the best times to travel to New Brunswick. Typically, the climate in Moncton is perfect. It's worth noting that weather conditions might differ depending on the location you visit.

Generally speaking, June, July, August and September provide perfect weather in Moncton. On the other hand, the months of January, February, March, April, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in New Brunswick. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.