The best times to visit Dartmouth for ideal weather are
June 11th to October 7th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Dartmouth Travel Guide
Other Dartmouth Travel Info
Weather in Dartmouth
Average temperatures in Dartmouth vary drastically. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 23rd 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 Dartmouth, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally mid August where highs are regularly around 77.3°F (25.2°C) with temperatures rarely dropping below 59.1°F (15.1°C) at night.
Dartmouth Temperatures (Fahrenheit)
Dartmouth 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.
Dartmouth Perceived Temperature (F)
Dartmouth Perceived Temperature (C)
Average Dartmouth 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 Dartmouth are September, July, and then August. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early July. For example, on the week of July 2nd 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 Dartmouth? Weather stations report a good amount of seasonal snow likely to be deepest around February, especially close to late October. The best time to ski (if at all) in Dartmouth is often around around December 17th 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 Dartmouth.
Snow on the Ground
The graph below shows the average snow on the ground in Dartmouth (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
Dartmouth has some very humid months, and above average humidity throughout the year. The least humid month is March (62.8% relative humidity), and the most humid month is July (77.2%).
Wind in Dartmouth is usually moderate. The windiest month is December, followed by January and March. December’s average wind speed of around 8.5 knots (9.7 MPH or 15.7 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 late January where average top sustained speeds reach 13.6 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Dartmouth.
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||8.4||Gentle breeze||12.8||Significant breeze|
|Feb||8.1||Gentle breeze||12.2||Significant breeze|
|Mar||8.3||Gentle breeze||12.7||Significant breeze|
|Apr||7.6||Gentle breeze||12||Significant breeze|
|May||6.6||Light breeze||10.9||Significant breeze|
|Jun||6.3||Light breeze||10.4||Gentle breeze|
|Jul||5.4||Light breeze||9.3||Significant breeze|
|Aug||5.5||Light breeze||9.5||Gentle breeze|
|Sep||6||Light breeze||10||Significant breeze|
|Oct||7.3||Gentle breeze||11||Significant breeze|
|Nov||7.6||Gentle breeze||11.6||Significant breeze|
|Dec||8.5||Gentle breeze||12.8||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Dartmouth?
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 Dartmouth, NS, 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 Dartmouth 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 Dartmouth Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel moderately cold. Highs range from 63.7°F (17.6°C) and 36.1°F (2.3°C) with warmer temperatures in the later months. Rain is somewhat common with 7 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 very comfortable weather with high temperatures that are comfortable. These months see the least precipitation with 6 to 9 days of precipitation per month. June – August is the busiest season for tourism in Dartmouth, so lodging and other accommodations may cost more than usual.
Fall (September through November)
Fall daily highs range from 74.6°F (23.7°C) and 45.6°F (7.6°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 6 to 9 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 Dartmouth to be enjoyable for warm weather travelers. The average high during this season is between 45.6°F (7.6°C) and 30.7°F (-0.7°C). On average, it rains or snows a fair amount: 6 to 11 times per month. These times of year are the slowest with tourists.