Do you need to know, when is the best time to go to New Brunswick? Then you should take a look here, what weather you can expect there during the year.
New Brunswick is part of Canada. Canada is a huge country, so the climate here varies from temperate in south to subarctic and arctic in north. Winters are sometimes tough, especially in the interior, where the climate is continental. You can expect snow in some places for five months of the year. Southern coastal parts of Canada have a temperate climate, with mild and rainy winters and quite warm summers.
When speaking about the usual weather in this area, the information is relevant for example for these popular places: Acadian Coast, Bathurst, Bay of Fundy, Black Rock, Cambridge Narrows, Campbellton, Campobello Island, Caraquet, Dalhousie, Edmundston, Florenceville Bristol, Fredericton, Gagetown, Grand Falls, Grand Manan Island, Hartland, Juniper, Machias Seal Island, Miramichi, Miramichi River Valley, Moncton, Nackawic, New Denmark, Perth Andover, Plaster Rock, Sackville, Saint Andrews, Saint John, Saint John River Valley, Shédiac, Southeastern New Brunswick, St. Stephen, Sussex, Woodstock.
Let's look now what weather you can expect in the area around Fredericton and in many other cities. The warmest month here is July, the average maximum temperature is 25.2 ℃ (77.36 ℉). The average minimum temperature in this month is 13.5 ℃ (56.3 ℉). The coldest month here is January, the average maximum temperature is -3.8 ℃ (25.16 ℉). The average minimum temperature in this month is -15.5 ℃ (4.1 ℉). The most rainy month here is January, the average number of rainy days is 15.1. The least rainy month here is August, the average number of rainy days is 11.1. 
When travelling around New Brunswick, always consider the altitude of the the place as well. We should remind you, that the highest point in Canada is Mount Logan (5959 m) and the lowest point is Atlantic Ocean (0 m). So there are huge differences in altitudes in this country and the weather is very different in them therefore. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)
Typical (usual) weather in New Brunswick in January is this: The average highest temperature in New Brunswick in January is -3.8 ℃ (25.16 ℉). The average lowest temperature is -15.5 ℃ (4.1 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around -2.35 ℃ (27.77 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around -2.95 ℃ (26.69 ℉). The average number of rainy days in January is 15.1. The average rainfall is 112 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 8:43 (hours and minutes), in the middle of the month 9:03 and at the end of the month 9:37.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in New Brunswick in February is this: The average highest temperature in New Brunswick in February is -2.1 ℃ (28.22 ℉). The average lowest temperature is -13.6 ℃ (7.52 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around -2.95 ℃ (26.69 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 0.55 ℃ (32.99 ℉). The average number of rainy days in February is 11.2. The average rainfall is 80.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:37 (hours and minutes), in the middle of the month 10:20 and at the end of the month 11:07.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in New Brunswick in March is this: The average highest temperature in New Brunswick in March is 3.2 ℃ (37.76 ℉). The average lowest temperature is -7.4 ℃ (18.68 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 0.55 ℃ (32.99 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 6.45 ℃ (43.61 ℉). The average number of rainy days in March is 14.2. The average rainfall is 100.4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:07 (hours and minutes), in the middle of the month 11:55 and at the end of the month 12:44.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in New Brunswick in April is this: The average highest temperature in New Brunswick in April is 9.7 ℃ (49.46 ℉). The average lowest temperature is -0.9 ℃ (30.38 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 6.45 ℃ (43.61 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 13.8 ℃ (56.84 ℉). The average number of rainy days in April is 13.4. The average rainfall is 86.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:44 (hours and minutes), in the middle of the month 13:32 and at the end of the month 14:17.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in New Brunswick in May is this: The average highest temperature in New Brunswick in May is 17.9 ℃ (64.22 ℉). The average lowest temperature is 4.9 ℃ (40.82 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 13.8 ℃ (56.84 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 20.7 ℃ (69.26 ℉). The average number of rainy days in May is 14.1. The average rainfall is 94 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:17 (hours and minutes), in the middle of the month 14:56 and at the end of the month 15:26.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.
Typical (usual) weather in New Brunswick in June is this: The average highest temperature in New Brunswick in June is 23.5 ℃ (74.3 ℉). The average lowest temperature is 9.9 ℃ (49.82 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 20.7 ℃ (69.26 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 24.35 ℃ (75.83 ℉). The average number of rainy days in June is 13. The average rainfall is 87.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 15:26 (hours and minutes), in the middle of the month 15:42 and at the end of the month 15:41.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in New Brunswick in July is this: The average highest temperature in New Brunswick in July is 25.2 ℃ (77.36 ℉). The average lowest temperature is 13.5 ℃ (56.3 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 24.35 ℃ (75.83 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 24.8 ℃ (76.64 ℉). The average number of rainy days in July is 12.9. The average rainfall is 87 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 15:41 (hours and minutes), in the middle of the month 15:24 and at the end of the month 14:54.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in New Brunswick in August is this: The average highest temperature in New Brunswick in August is 24.4 ℃ (75.92 ℉). The average lowest temperature is 12.6 ℃ (54.68 ℉). At the beginning of August you can expect higher temperatures, the average highest temperature is around 24.8 ℃ (76.64 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 22.25 ℃ (72.05 ℉). The average number of rainy days in August is 11.1. The average rainfall is 87.6 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 14:54 (hours and minutes), in the middle of the month 14:15 and at the end of the month 13:30.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in New Brunswick in September is this: The average highest temperature in New Brunswick in September is 20.1 ℃ (68.18 ℉). The average lowest temperature is 6.8 ℃ (44.24 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 22.25 ℃ (72.05 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 16.4 ℃ (61.52 ℉). The average number of rainy days in September is 11.4. The average rainfall is 95.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 13:30 (hours and minutes), in the middle of the month 12:43 and at the end of the month 11:55.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in New Brunswick in October is this: The average highest temperature in New Brunswick in October is 12.7 ℃ (54.86 ℉). The average lowest temperature is 1.4 ℃ (34.52 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 16.4 ℃ (61.52 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 9.2 ℃ (48.56 ℉). The average number of rainy days in October is 12.4. The average rainfall is 97 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:55 (hours and minutes), in the middle of the month 11:07 and at the end of the month 10:21.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in New Brunswick in November is this: The average highest temperature in New Brunswick in November is 5.7 ℃ (42.26 ℉). The average lowest temperature is -3.2 ℃ (26.24 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 9.2 ℃ (48.56 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 2.4 ℃ (36.32 ℉). The average number of rainy days in November is 13.6. The average rainfall is 103.4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 10:21 (hours and minutes), in the middle of the month 9:39 and at the end of the month 9:04.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in New Brunswick in December is this: The average highest temperature in New Brunswick in December is -0.9 ℃ (30.38 ℉). The average lowest temperature is -11.1 ℃ (12.02 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 2.4 ℃ (36.32 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around -2.35 ℃ (27.77 ℉). The average number of rainy days in December is 14.9. The average rainfall is 105.1 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 9:04 (hours and minutes), in the middle of the month 8:43 and at the end of the month 8:39.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.| Fredericton | temperature: - | highest temperature: -0.9 ℃ (30.38 ℉) | lowest temperature: -11.1 ℃ (12.02 ℉) | rainfall: 105.1mm | rainy days: 14.9 |
| Saint John NB | temperature: - | highest temperature: 0.5 ℃ (32.9 ℉) | lowest temperature: -9.3 ℃ (15.26 ℉) | rainfall: 150.7mm | rainy days: 17 |