Annual mean 12°C · wettest around November · prevailing wind SW
Warmest
21.8 °C
Coldest
4.9 °C
Wettest
34%
Windiest
7.2 m/s
Prevailing
SW
5.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Sluis over the whole year is 12°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C. Sluis has no sharply defined rainy season: the chance of rain on a given day runs from 19% in July, the driest month, to 31% in November, the wettest. Winds in Sluis are highest in February, averaging 6.3 m/s (23 km/h), and lightest in August, at 4.6 m/s (17 km/h). The prevailing wind is from the SW. The clearest skies in Sluis come in August, when the sky is typically 53% covered; December is the cloudiest month, at 78%.
Month by month Sluis climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
6°C
4°C
-0°C
28%
75%
6.0 m/s
0
0
5
February
7°C
5°C
1°C
23%
68%
6.3 m/s
0
0
13
March
9°C
6°C
4°C
23%
64%
5.4 m/s
2
0
28
April
13°C
8°C
8°C
19%
55%
4.9 m/s
10
0
53
May
16°C
12°C
13°C
19%
55%
4.7 m/s
33
2
73
June
20°C
15°C
17°C
20%
53%
4.8 m/s
63
10
72
July
21°C
17°C
19°C
19%
55%
4.7 m/s
71
10
72
August
22°C
17°C
19°C
25%
53%
4.6 m/s
72
15
67
September
19°C
14°C
16°C
26%
56%
4.6 m/s
60
6
75
October
15°C
12°C
11°C
27%
65%
5.3 m/s
21
0
71
November
10°C
8°C
5°C
31%
71%
5.5 m/s
1
0
33
December
7°C
6°C
1°C
30%
78%
6.0 m/s
0
0
13
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Sluis weather by season
Year round, Sluis has days of about 6°C at their warmest in January, its coolest month, and 22°C in August, its warmest; the coolest hours of the day run from 4°C to 17°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around November and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Sluis weather in winterDecember to February
High 7°CLow 5°CRain 27%
Winter in Sluis has typical daily highs of about 7°C and lows of about 5°C, with a 27% chance of rain on a given day.
Sluis weather in springMarch to May
High 13°CLow 8°CRain 20%
Spring in Sluis has typical daily highs of about 13°C and lows of about 8°C, with a 20% chance of rain on a given day.
Sluis weather in summerJune to August
High 21°CLow 16°CRain 21%
Summer in Sluis has typical daily highs of about 21°C and lows of about 16°C, with a 21% chance of rain on a given day.
Sluis weather in autumnSeptember to November
High 15°CLow 11°CRain 28%
Autumn in Sluis has typical daily highs of about 15°C and lows of about 11°C, with a 28% chance of rain on a given day.
When is the rainy season in Sluis?
Sluis has no sharply defined rainy season: the chance of rain on a given day runs from 19% in July, the driest month, to 31% in November, the wettest.
What time of year is Sluis windiest?
Winds in Sluis are highest in February, averaging 6.3 m/s (23 km/h), and lightest in August, at 4.6 m/s (17 km/h). The prevailing wind is from the SW.
What is the average temperature in Sluis year round?
The average temperature in Sluis over the whole year is 12°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C.