Prestatyn Gronant Dunes (Beach) (Flintshire) weather

Here are our top tips to keep you, your friends and family safe at the beach with links to Royal National Lifeboat Institution (RNLI) and Met Office advice.



Forecast days

Sunny intervals changing to partly cloudy by early evening.
Beach safety today
Use caution in and out of the sea. Strong winds may blow you off course or affect your balance
  • • paddle boarding/kayaking not recommended at any level
  • • consider your abilities in all other activities, seek expert advice

Tide: Next low tide (2.5m) at

Sunrise iconSunrise:
Sunset iconSunset:
M UV
L Pollution
No pollen data.

7 day forecast for Prestatyn Gronant Dunes (Beach)

Today (18 September 2025)
Time
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy
Chance of precipitation
<5%
10%
20%
20%
30%
30%
30%
30%
Temperature
19°
19°
19°
18°
18°
18°
18°
18°
Feels like temperature (°C)
15°
16°
16°
16°
15°
15°
15°
15°
Wind direction and speed
SW
19
SW
19
SW
18
SW
17
SW
17
SW
17
SW
17
SW
17
Wind gust (mph)
32
31
30
30
31
31
30
29
Visibility
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
85%
82%
81%
84%
85%
85%
85%
86%
UV 2 1 1 1 - - - -
Wind direction and speed
19
19
18
17
17
17
17
17
Height of waves offshore (m)
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
Period of waves offshore (s)
4
4
4
4
4
4
5
5
Direction of waves offshore
Friday (19 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Light shower day Cloudy Overcast Overcast Light shower day Overcast Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
Chance of precipitation
30%
30%
30%
40%
40%
40%
30%
40%
50%
50%
40%
40%
50%
50%
50%
40%
40%
50%
40%
40%
50%
40%
40%
50%
Temperature (°C)
18°
18°
18°
17°
17°
17°
17°
17°
17°
17°
18°
18°
18°
18°
19°
18°
18°
18°
17°
16°
16°
15°
15°
15°
Feels like temperature (°C)
15°
15°
15°
15°
15°
15°
14°
14°
15°
15°
16°
16°
16°
17°
17°
17°
17°
16°
16°
16°
15°
15°
15°
15°
Wind direction and speed (mph)
SW
17
SW
15
SSW
15
SSW
15
SSW
16
SSW
16
SSW
16
SSW
15
SSW
14
SSW
13
SW
13
SW
14
SW
14
WSW
12
WSW
11
W
10
WSW
10
W
9
W
8
W
7
WSW
6
SSW
6
S
5
SSW
5
Wind gust (mph)
29
27
27
26
25
24
23
22
21
20
19
19
18
18
15
16
16
15
13
13
12
11
10
9
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
G
Humidity
85%
86%
86%
85%
85%
85%
85%
85%
85%
85%
83%
82%
81%
80%
78%
81%
80%
81%
85%
87%
88%
92%
92%
92%
UV - - - - - - 1 1 1 1 1 2 3 2 2 2 1 1 1 1 - - - -
Wind direction and speed (mph)
17
16
15
15
16
16
16
15
14
13
13
14
14
12
11
11
10
9
8
7
6
6
5
5
Height of waves offshore (m)
0.5
0.4
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.2
0.2
Period of waves offshore (s)
5
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Direction of waves offshore
Saturday (20 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Light rain Light rain Light rain Light rain Heavy rain Light rain Light rain Light rain Light rain Light rain Light rain Heavy rain Light rain Heavy rain Heavy rain Light rain Heavy rain Heavy shower day Heavy shower day Heavy shower night Light shower night Light shower night Light rain Light rain
Chance of precipitation
60%
50%
60%
60%
70%
70%
70%
70%
70%
60%
70%
70%
80%
90%
80%
80%
80%
80%
70%
70%
60%
70%
70%
70%
Temperature (°C)
15°
15°
15°
15°
14°
14°
14°
14°
14°
14°
14°
15°
15°
15°
15°
15°
15°
15°
15°
14°
13°
13°
12°
12°
Feels like temperature (°C)
15°
15°
15°
14°
14°
14°
14°
13°
13°
13°
13°
13°
13°
13°
13°
13°
13°
13°
12°
11°
10°
10°
10°
Wind direction and speed (mph)
SSW
5
SSW
5
WSW
5
N
5
NE
5
NE
5
NE
6
ENE
6
ENE
7
ENE
8
E
9
E
10
E
11
E
12
ENE
13
E
14
ESE
15
SE
16
SE
16
SSE
16
S
15
SE
15
SSW
16
WNW
17
Wind gust (mph)
9
10
11
11
10
11
12
12
13
15
18
17
19
21
23
24
26
25
26
26
28
25
25
26
Visibility (description)
G
G
G
G
G
G
G
G
M
G
G
G
G
G
G
G
G
G
VG
VG
VG
VG
VG
E
Humidity
92%
93%
93%
94%
94%
95%
96%
95%
94%
93%
92%
91%
91%
91%
91%
88%
87%
86%
84%
84%
86%
86%
86%
86%
UV - - - - - - 1 1 1 1 2 1 2 2 1 2 1 1 1 1 - - - -
Wind direction and speed (mph)
5
5
5
5
5
5
6
6
7
8
9
10
11
12
13
14
15
15
15
15
16
16
16
17
Height of waves offshore (m)
0.3
0.4
0.4
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.4
0.4
0.5
0.5
0.6
0.7
0.9
1.0
1.1
1.2
1.5
1.8
2.1
2.1
Period of waves offshore (s)
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
5
5
5
6
6
7
7
Direction of waves offshore
Sunday (21 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Light rain Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light rain Light rain Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower night Light shower night Partly cloudy night Partly cloudy night Partly cloudy night
Chance of precipitation
80%
80%
80%
80%
90%
90%
90%
80%
70%
70%
60%
60%
60%
60%
70%
70%
60%
60%
60%
60%
50%
40%
40%
30%
Temperature (°C)
12°
12°
11°
11°
11°
11°
10°
10°
10°
11°
11°
12°
12°
13°
13°
13°
13°
13°
12°
12°
12°
11°
11°
11°
Feels like temperature (°C)
10°
10°
10°
10°
10°
Wind direction and speed (mph)
NNW
18
N
19
NNW
19
NNW
19
N
19
N
19
N
19
N
18
N
17
N
16
N
15
N
15
N
15
N
15
N
14
N
15
N
15
NNW
15
N
16
N
16
NNE
16
NNE
16
NNE
16
NNE
16
Wind gust (mph)
27
27
28
28
24
22
22
21
25
28
27
24
25
25
23
24
26
26
25
24
21
22
17
17
Visibility (description)
E
E
E
E
E
VG
VG
VG
VG
VG
VG
VG
VG
E
E
E
E
E
E
VG
VG
VG
VG
VG
Humidity
85%
85%
86%
86%
85%
86%
87%
86%
84%
82%
79%
73%
73%
69%
68%
67%
67%
68%
71%
71%
73%
73%
73%
73%
UV - - - - - - 1 1 1 1 2 2 3 2 3 1 1 1 1 1 - - - -
Wind direction and speed (mph)
18
19
19
19
19
18
18
18
17
16
15
15
15
15
15
15
15
15
16
17
16
16
16
15
Height of waves offshore (m)
2.1
2.1
2.1
2.2
2.2
2.0
1.9
1.7
1.6
1.5
1.4
1.3
1.1
1.0
1.0
0.9
0.8
0.8
0.7
0.6
0.7
0.7
0.7
0.7
Period of waves offshore (s)
7
8
8
8
8
8
7
7
7
7
6
6
6
6
6
5
5
5
5
5
5
5
5
5
Direction of waves offshore
Monday (22 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Clear night Clear night Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
Chance of precipitation
20%
20%
20%
20%
20%
20%
20%
10%
10%
10%
<5%
10%
10%
10%
20%
20%
20%
20%
20%
20%
20%
20%
20%
20%
Temperature (°C)
11°
11°
10°
10°
10°
10°
10°
10°
10°
11°
12°
12°
13°
13°
13°
13°
13°
12°
12°
11°
11°
11°
10°
Feels like temperature (°C)
10°
10°
10°
10°
10°
10°
10°
Wind direction and speed (mph)
NNE
15
NNE
15
NNE
14
NNE
14
N
14
NNE
13
NNE
13
NNE
12
NNE
12
NNE
13
NNE
13
NNE
13
NNE
13
N
13
N
13
N
13
N
12
NNW
12
NNW
12
N
11
N
10
N
9
NNE
9
NNE
8
Wind gust (mph)
17
18
17
17
17
17
17
16
17
19
19
20
19
19
20
20
19
19
18
15
14
13
12
12
Visibility (description)
VG
E
E
E
VG
VG
VG
VG
VG
VG
VG
E
E
E
E
E
E
E
VG
VG
VG
VG
VG
VG
Humidity
72%
74%
72%
73%
73%
75%
75%
75%
74%
67%
64%
62%
58%
56%
55%
54%
55%
55%
57%
62%
64%
66%
68%
71%
UV - - - - - - - 1 1 1 2 3 3 4 3 2 1 1 1 1 - - - -
Wind direction and speed (mph)
15
14
14
14
14
13
13
12
12
13
13
13
13
13
13
12
12
12
11
11
10
10
9
8
Height of waves offshore (m)
0.6
0.6
0.6
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.4
0.4
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.3
Period of waves offshore (s)
5
5
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
Direction of waves offshore
Tuesday (23 September 2025)
Time
00:00
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Cloudy Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
20%
10%
10%
10%
10%
10%
<5%
<5%
<5%
Temperature (°C)
10°
10°
10°
12°
14°
14°
12°
11°
Feels like temperature (°C)
11°
12°
12°
10°
10°
Wind direction and speed (mph)
NNE
7
ENE
7
N
6
NE
6
N
8
N
9
NNW
9
N
8
NE
7
Wind gust (mph)
12
10
8
9
13
13
12
9
8
Visibility (description)
VG
VG
VG
G
VG
VG
VG
VG
VG
Humidity
72%
74%
78%
80%
66%
59%
58%
71%
80%
UV - - - 1 2 3 1 1 -
Wind direction and speed (mph)
8
7
7
7
9
10
10
9
7
Height of waves offshore (m)
0.4
0.4
0.4
0.4
0.4
0.4
0.3
0.3
0.3
Period of waves offshore (s)
4
4
4
4
4
4
4
4
3
Direction of waves offshore
Wednesday (24 September 2025)
Time
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Cloudy Cloudy Partly cloudy night Cloudy
Chance of precipitation
<5%
<5%
10%
10%
10%
10%
<5%
10%
Temperature (°C)
10°
12°
14°
15°
13°
11°
Feels like temperature (°C)
11°
13°
13°
11°
10°
Wind direction and speed (mph)
E
6
ENE
6
ENE
6
E
8
NE
9
NNE
9
N
8
NNE
7
Wind gust (mph)
7
7
8
11
12
11
9
7
Visibility (description)
VG
VG
G
VG
VG
VG
VG
VG
Humidity
82%
87%
90%
75%
63%
59%
72%
81%
UV - - 1 2 3 1 1 -
Wind direction and speed (mph)
6
Height of waves offshore (m)
0.2
Period of waves offshore (s)
3
Direction of waves offshore

Tide times

Thursday 18 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 18 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 18 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 18 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Mostyn Docks tidal station which is 4.3 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Prestatyn Gronant Dunes (Beach) weather map

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Wales weather forecast

Headline:

Largely dry with sunny spells on Friday.

This Evening and Tonight:

Remaining largely cloudy overnight as a band of rain and drizzle continues to affect much of the north and west. Drier in the east with a few clear spells. Windy in the northwest, but winds easing elsewhere by dawn. Minimum temperature 12 °C.

Friday:

Increasingly cloudy in the west with rain and drizzle pushing north-eastwards, turning heavy at times. Some brighter and drier intervals in the east. Winds continuing to ease. Feeling humid. Maximum temperature 20 °C.

Outlook for Saturday to Monday:

Remaining changeable with showers or longer spells of rain on Saturday. Turning cooler through Sunday as showery rain clears southeast, leaving sunny spells and showers on Monday.

Updated:

UK long range weather forecast

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