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.
Sluis Travel Guide
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)
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Sluis Temperatures (Celsius)
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“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)
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Sluis Perceived Temperature (C)
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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.
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Snow on the Ground
The graph below shows the average snow on the ground in Sluis (in).
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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.
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Wind
The graph below shows wind speed (max and average) in knots.
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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 generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the Netherlands; 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 26, 2023.
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
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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.
Best Times to Travel› the Netherlands › Sluis, the Netherlands