The best times to visit Sussex for ideal weather are
September 10th to September 30th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Sussex Travel Guide
Other Sussex Travel Info
Weather in Sussex
Average temperatures in Sussex vary drastically. Considering humidity, temperatures feel cold all year with a chance of rain or snow throughout most of the year. The area is far less temperate than some — in the bottom 1 percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Sussex, the hottest months are July, September, and then August. See average monthly temperatures below. The warmest time of year is generally early July where highs are regularly around 52.6°F (11.4°C) with temperatures rarely dropping below 38.7°F (3.7°C) at night.
Sussex Temperatures (Fahrenheit)
Sussex Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Sussex Perceived Temperature (F)
Sussex Perceived Temperature (C)
Average Sussex Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Sussex are September, May, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid to late September. For example, on the week of September 17th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid December with an average of 3 days of significant precipitation the week of December 10th.
When can you find snow in Sussex? Weather stations report very large amounts of snow likely to be deepest around February, especially close to late February and early March. The best time to ski (if at all) in Sussex is often around around December 3rd when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Sussex.
Snow on the Ground
The graph below shows the average snow on the ground in Sussex (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Sussex has some extremely humid months, and above average humidity throughout the year. The least humid month is April (68.5% relative humidity), and the most humid month is December (87.8%).
Wind in Sussex is usually moderate. The windiest month is January, followed by March and February. January’s average wind speed of around 9.7 knots (11.2 MPH or 18 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early January where average top sustained speeds reach 16.2 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Sussex.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||9.7||Gentle breeze||15.3||Significant breeze|
|Feb||9.4||Gentle breeze||14.5||Significant breeze|
|Mar||9.7||Gentle breeze||14.5||Significant breeze|
|Apr||9||Gentle breeze||13.8||Significant breeze|
|May||8.5||Gentle breeze||12.7||Significant breeze|
|Jun||7.6||Gentle breeze||11.4||Significant breeze|
|Jul||7.4||Gentle breeze||11.2||Significant breeze|
|Aug||7.1||Gentle breeze||10.7||Gentle breeze|
|Sep||7.9||Gentle breeze||11.8||Significant breeze|
|Oct||9||Gentle breeze||13.3||Significant breeze|
|Nov||9.4||Gentle breeze||14.2||Significant breeze|
|Dec||9.3||Gentle breeze||15.1||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Sussex?
Our best data indicates this area is generally safe. As of Oct 07, 2019 there are no travel advisories or warnings for Canada; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 07, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Sussex, NB, Canada is July, followed by August and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Sussex in December. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Sussex Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel very cold. Highs range from 39.7°F (4.3°C) and 12.7°F (-10.7°C) with warmer temperatures in the later months. Rain is somewhat common with 8 to 9 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have cold weather with high temperatures that are still jacket weather. These months see moderate precipitation with 8 to 9 days of precipitation per month. June – August is the busiest season for tourism in Sussex, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 43.6°F (6.4°C) and 17.1°F (-8.3°C), which will feel very chilly given the humidity and wind. It rains or snows a significant amount: 7 to 10 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.
Winter (December through February)
Weather is far too cold this time of year in Sussex to be enjoyable for warm weather travelers. The average high during this season is between 17.5°F (-8.1°C) and 3.4°F (-15.9°C). On average, it rains or snows a great amount: 9 to 14 times per month. These times of year are the slowest with tourists.