The best times to visit Saint-Martin-Boulogne for ideal weather are

May 28th to October 14th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Saint-Martin-Boulogne Travel Info

Weather in Saint-Martin-Boulogne


Average temperatures in Saint-Martin-Boulogne vary somewhat. 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 32nd 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 Saint-Martin-Boulogne, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 70.1°F (21.2°C) with temperatures rarely dropping below 58.9°F (14.9°C) at night.

Saint-Martin-Boulogne Temperatures (Fahrenheit)


Saint-Martin-Boulogne Temperatures (Celsius)


“Feels-Like” Temperatures

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.

Saint-Martin-Boulogne Perceived Temperature (F)


Saint-Martin-Boulogne Perceived Temperature (C)



Average Saint-Martin-Boulogne 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.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 45.1 41.5 37.8
Feb 45.1 41 37.3
Mar 49.7 44.8 40.5
Apr 56.3 49.9 44.8
May 59.8 54.1 49.5
Jun 64.4 58.6 53.9
Jul 68.3 62.4 58
Aug 68.3 63 58.7
Sep 64.7 59.7 55.2
Oct 59 54.5 50.3
Nov 52.3 48.4 44.7
Dec 46.9 43.1 39.2

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 7.3 5.3 3.2
Feb 7.3 5 2.9
Mar 9.8 7.1 4.7
Apr 13.5 9.9 7.1
May 15.4 12.3 9.7
Jun 18 14.8 12.2
Jul 20.2 16.9 14.4
Aug 20.2 17.2 14.8
Sep 18.2 15.4 12.9
Oct 15 12.5 10.2
Nov 11.3 9.1 7.1
Dec 8.3 6.2 4



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Saint-Martin-Boulogne are April, June, 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 August. For example, on the week of July 30th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early November with an average of 3 days of significant precipitation the week of November 5th.

When can you find snow in Saint-Martin-Boulogne? Weather stations report a good amount of seasonal snow likely to be deepest around December, especially close to mid December. The best time to ski (if at all) in Saint-Martin-Boulogne 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 Saint-Martin-Boulogne.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Saint-Martin-Boulogne (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 27% 1.2 2.7
Feb 25% 1.8 2.3
Mar 19% 1.6 1.9
Apr 13% 0 1.3
May 20% 0 1.9
Jun 17% 0 1.8
Jul 19% 0 2.5
Aug 18% 0 2.4
Sep 18% 0 2.4
Oct 31% 0 3.5
Nov 35% 1.2 4.1
Dec 35% 2.5 4

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 27 3 6.9
Feb 25 4.6 5.8
Mar 19 4.1 4.8
Apr 13 0 3.3
May 20 0 4.8
Jun 17 0 4.6
Jul 19 0 6.4
Aug 18 0 6.1
Sep 18 0 6.1
Oct 31 0 8.9
Nov 35 3 10.4
Dec 35 6.4 10.2


Humidity and Wind

Saint-Martin-Boulogne has some very 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 January (78.9%).

Wind in Saint-Martin-Boulogne is usually moderate. The windiest month is December, followed by January and November. December’s average wind speed of around 13 knots (14.9 MPH or 24 KPH) is considered “a moderate breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early December where average top sustained speeds reach 21.1 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Saint-Martin-Boulogne.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

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 12.3 Significant breeze 17.8 Strong breeze
Feb 10.7 Gentle breeze 16.2 Significant breeze
Mar 10.6 Gentle breeze 16.4 Strong breeze
Apr 9.1 Gentle breeze 14.3 Significant breeze
May 10.1 Gentle breeze 15.4 Strong breeze
Jun 9.6 Gentle breeze 14.9 Significant breeze
Jul 10.2 Gentle breeze 15.7 Strong breeze
Aug 10 Gentle breeze 15.5 Significant breeze
Sep 9.8 Gentle breeze 14.9 Strong breeze
Oct 10.5 Gentle breeze 15.8 Significant breeze
Nov 11.7 Significant breeze 17.9 Strong breeze
Dec 13 Significant breeze 18.9 Strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 78.9%
Feb 78.2%
Mar 71%
Apr 68.5%
May 72.2%
Jun 73.1%
Jul 72.7%
Aug 72.3%
Sep 71.3%
Oct 74.7%
Nov 78.4%
Dec 76.9%


Is it Safe to Travel to Saint-Martin-Boulogne?

Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for France; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Sep 24, 2019.


The Busiest and Least Crowded Months

The busiest month for tourism in Saint-Martin-Boulogne, France is July, followed by June and February. 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 Saint-Martin-Boulogne in March. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 35 in March means 35% of the tourists vs. July.



Overall Saint-Martin-Boulogne Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 63.1°F (17.3°C) and 47.2°F (8.4°C) with warmer temperatures in the later months. Rain is somewhat common with 4 to 6 days of significant precipitation per month. Spring is fairly slow for tourism, which makes it a good time for those looking for deals.

Summer (June through August)

The middle-year months have comfortably cool weather with high temperatures that are comfortable. These months see moderate precipitation with 5 to 6 days of precipitation per month. June – August is the busiest season for tourism in Saint-Martin-Boulogne, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 66.5°F (19.2°C) and 47.9°F (8.8°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: 5 to 11 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Saint-Martin-Boulogne to be enjoyable for warm weather travelers. The average high during this season is between 48.4°F (9.1°C) and 43.4°F (6.3°C). On average, it rains or snows a fair amount: 7 to 11 times per month. These times of year are the second busiest with tourists.


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