Annual mean 12°C · wettest around December · prevailing wind SW
Warmest
22.1 °C
Coldest
5.3 °C
Wettest
55%
Windiest
7.4 m/s
Prevailing
SW
6.3 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 Hellevoetsluis 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. The rainy (wet) season in Hellevoetsluis runs from October to March, peaking in December with a 52% chance of rain on a given day. The dry season is April to September; June is the driest month, at 26%. Winds in Hellevoetsluis are highest in February, averaging 6.7 m/s (24 km/h), and lightest in August, at 5.0 m/s (18 km/h). The prevailing wind is from the SW. The clearest skies in Hellevoetsluis come in June, when the sky is typically 41% covered; December is the cloudiest month, at 71%.
Month by month Hellevoetsluis 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
49%
70%
6.5 m/s
0
0
6
February
7°C
5°C
1°C
44%
59%
6.7 m/s
0
0
14
March
10°C
5°C
4°C
40%
51%
5.9 m/s
2
0
28
April
13°C
8°C
7°C
33%
42%
5.5 m/s
11
0
52
May
16°C
11°C
12°C
27%
42%
5.2 m/s
32
2
71
June
20°C
15°C
17°C
26%
41%
5.2 m/s
62
9
72
July
21°C
16°C
18°C
27%
44%
5.1 m/s
69
9
70
August
22°C
17°C
19°C
29%
42%
5.0 m/s
71
14
66
September
19°C
14°C
16°C
34%
45%
5.0 m/s
58
7
72
October
15°C
11°C
11°C
42%
56%
5.8 m/s
19
0
67
November
10°C
7°C
5°C
49%
62%
6.0 m/s
1
0
33
December
7°C
6°C
1°C
52%
71%
6.5 m/s
0
0
12
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 Hellevoetsluis weather by season
Year round, Hellevoetsluis 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 December and least likely around June. 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.
Hellevoetsluis weather in winterDecember to February
High 7°CLow 5°CRain 48%
Winter in Hellevoetsluis has typical daily highs of about 7°C and lows of about 5°C, with a 48% chance of rain on a given day.
Hellevoetsluis weather in springMarch to May
High 13°CLow 8°CRain 33%
Spring in Hellevoetsluis has typical daily highs of about 13°C and lows of about 8°C, with a 33% chance of rain on a given day.
Hellevoetsluis weather in summerJune to August
High 21°CLow 16°CRain 27%
Summer in Hellevoetsluis has typical daily highs of about 21°C and lows of about 16°C, with a 27% chance of rain on a given day.
Hellevoetsluis weather in autumnSeptember to November
High 15°CLow 11°CRain 42%
Autumn in Hellevoetsluis has typical daily highs of about 15°C and lows of about 11°C, with a 42% chance of rain on a given day.
When is the rainy season in Hellevoetsluis?
The rainy (wet) season in Hellevoetsluis runs from October to March, peaking in December with a 52% chance of rain on a given day. The dry season is April to September; June is the driest month, at 26%.
What time of year is Hellevoetsluis windiest?
Winds in Hellevoetsluis are highest in February, averaging 6.7 m/s (24 km/h), and lightest in August, at 5.0 m/s (18 km/h). The prevailing wind is from the SW.
What is the average temperature in Hellevoetsluis year round?
The average temperature in Hellevoetsluis 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.