The best times to visit Sluis for ideal weather are

May 14th to October 21st

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

 

 


Other Sluis Travel Info

Weather in Sluis

Temperature

Average temperatures in Sluis vary greatly. 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 35th 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 Sluis, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 70.4°F (21.3°C) with temperatures rarely dropping below 61°F (16.1°C) at night.

Sluis Temperatures (Fahrenheit)

Key
High
Average
Low

Sluis Temperatures (Celsius)

Key
High
Average
Low

“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.

Sluis Perceived Temperature (F)

Key
High
Average
Low

Sluis Perceived Temperature (C)

Key
High
Average
Low

 

Average Sluis 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 42.9 39.9 36.7
Feb 42.7 39.1 35.7
Mar 47.9 43.7 40
Apr 54.2 49.4 45.3
May 58 54 50
Jun 63.6 59.5 55.5
Jul 68.3 64.1 59.8
Aug 69 64.2 59.6
Sep 64.6 60.2 55.9
Oct 59 54.9 51.1
Nov 51.6 48.3 45
Dec 45.6 42.8 39.3

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 6.1 4.4 2.6
Feb 5.9 3.9 2.1
Mar 8.8 6.5 4.4
Apr 12.3 9.7 7.4
May 14.4 12.2 10
Jun 17.6 15.3 13.1
Jul 20.2 17.8 15.4
Aug 20.6 17.9 15.3
Sep 18.1 15.7 13.3
Oct 15 12.7 10.6
Nov 10.9 9.1 7.2
Dec 7.6 6 4.1

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Sluis are March, April, and then February. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid February. For example, on the week of February 12th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid to late August with an average of 3 days of significant precipitation the week of August 20th.

When can you find snow in Sluis? Weather stations report no annual snow. 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 Sluis.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Sluis (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 22% 0 1.9
Feb 15% 0 1.2
Mar 9% 0 1.1
Apr 12% 0 1.1
May 17% 0 1.9
Jun 16% 0 2
Jul 26% 0 3.2
Aug 25% 0 3
Sep 24% 0 2.1
Oct 24% 0 2.4
Nov 22% 0 2.3
Dec 23% 0 2.3

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 22 0 4.8
Feb 15 0 3
Mar 9 0 2.8
Apr 12 0 2.8
May 17 0 4.8
Jun 16 0 5.1
Jul 26 0 8.1
Aug 25 0 7.6
Sep 24 0 5.3
Oct 24 0 6.1
Nov 22 0 5.8
Dec 23 0 5.8

 

Humidity and Wind

Sluis has some very humid months, and high humidity throughout the year. The least humid month is May (70.3% relative humidity), and the most humid month is November (80.7%).

Wind in Sluis is usually stronger than many places. The windiest month is December, followed by November and February. December’s average wind speed of around 14.1 knots (16.2 MPH or 26 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 mid December where average top sustained speeds reach 21.3 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Sluis.

Key
Avg. Relative Humidity

Wind

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

Key
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 12.7 Significant breeze 18.5 Strong breeze
Feb 12.7 Significant breeze 18.6 Strong breeze
Mar 10.9 Gentle breeze 16.3 Strong breeze
Apr 11 Significant breeze 16.6 Significant breeze
May 11.7 Significant breeze 17.3 Strong breeze
Jun 11.4 Significant breeze 16.9 Significant breeze
Jul 10.7 Gentle breeze 16.2 Strong breeze
Aug 10.8 Gentle breeze 16 Significant breeze
Sep 11 Significant breeze 16 Strong breeze
Oct 11.7 Significant breeze 17 Strong breeze
Nov 12.9 Significant breeze 19 Strong breeze
Dec 14.1 Significant breeze 20.5 Strong breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 80.4%
Feb 78.2%
Mar 74.1%
Apr 70.4%
May 70.3%
Jun 71.3%
Jul 71.6%
Aug 70.4%
Sep 71.8%
Oct 75.7%
Nov 80.7%
Dec 78.7%

 

Is it Safe to Travel to Sluis?

Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for the Netherlands; 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 Aug 22, 2019.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Sluis, the Netherlands is October, followed by September and May. 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 Sluis in April. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
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 slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 63.4 in April means 63.4% of the tourists vs. October.

 

 

Overall Sluis Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 60.1°F (15.6°C) and 45°F (7.2°C) with warmer temperatures in the later months. Rain is rare with 3 to 5 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 8 days of precipitation per month. June – August is the slowest season for tourism in Sluis, so lodging and other accommodations may cost less than usual.

Fall (September through November)

Fall daily highs range from 67.4°F (19.7°C) and 46.4°F (8°C), which will feel chilly given the humidity and wind. It rains or snows a significant amount: approximately 7 days per month. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.

Winter (December through February)

Weather is too cold this time of year in Sluis to be enjoyable for warm weather travelers. The average high during this season is between 46°F (7.8°C) and 40.5°F (4.7°C). On average, it rains or snows a fair amount: 4 to 7 times per month. These times of year are the second busiest with tourists.

 

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