Annual mean 12°C · wettest around November · prevailing wind W
Warmest
21.9 °C
Coldest
6.2 °C
Wettest
27%
Windiest
7.2 m/s
Prevailing
W
6.0 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 Gravelines 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 5°C. Gravelines has no sharply defined rainy season: the chance of rain on a given day runs from 10% in July, the driest month, to 22% in November, the wettest. Winds in Gravelines are highest in February, averaging 5.9 m/s (21 km/h), and lightest in August, at 4.5 m/s (16 km/h). The prevailing wind is from the W. The clearest skies in Gravelines come in August, when the sky is typically 82% covered; December is the cloudiest month, at 91%.
Month by month Gravelines 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
7°C
5°C
1°C
17%
90%
5.5 m/s
0
0
11
February
8°C
5°C
2°C
16%
88%
5.9 m/s
0
0
20
March
10°C
6°C
4°C
15%
87%
5.5 m/s
2
0
30
April
12°C
7°C
7°C
11%
84%
4.7 m/s
9
0
54
May
16°C
11°C
12°C
10%
84%
4.6 m/s
27
1
78
June
19°C
14°C
16°C
12%
84%
4.6 m/s
58
6
80
July
21°C
16°C
18°C
10%
84%
4.6 m/s
77
8
80
August
22°C
17°C
19°C
13%
82%
4.5 m/s
78
10
74
September
19°C
14°C
16°C
17%
84%
4.5 m/s
59
6
78
October
15°C
11°C
12°C
21%
87%
4.7 m/s
24
0
77
November
10°C
8°C
6°C
22%
90%
5.2 m/s
0
0
42
December
8°C
6°C
3°C
20%
91%
5.6 m/s
0
0
19
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 Gravelines weather by season
Year round, Gravelines has days of about 7°C at their warmest in January, its coolest month, and 22°C in August, its warmest; the coolest hours of the day run from 5°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.
Gravelines weather in winterDecember to February
High 8°CLow 5°CRain 17%
Winter in Gravelines has typical daily highs of about 8°C and lows of about 5°C, with a 17% chance of rain on a given day.
Gravelines weather in springMarch to May
High 13°CLow 8°CRain 12%
Spring in Gravelines has typical daily highs of about 13°C and lows of about 8°C, with a 12% chance of rain on a given day.
Gravelines weather in summerJune to August
High 21°CLow 15°CRain 12%
Summer in Gravelines has typical daily highs of about 21°C and lows of about 15°C, with a 12% chance of rain on a given day.
Gravelines weather in autumnSeptember to November
High 15°CLow 11°CRain 20%
Autumn in Gravelines has typical daily highs of about 15°C and lows of about 11°C, with a 20% chance of rain on a given day.
When is the rainy season in Gravelines?
Gravelines has no sharply defined rainy season: the chance of rain on a given day runs from 10% in July, the driest month, to 22% in November, the wettest.
What time of year is Gravelines windiest?
Winds in Gravelines are highest in February, averaging 5.9 m/s (21 km/h), and lightest in August, at 4.5 m/s (16 km/h). The prevailing wind is from the W.
What is the average temperature in Gravelines year round?
The average temperature in Gravelines 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 5°C.