Porth Tywyn Mawr (Sandy Beach) (Isle of Anglesey) weather
Find a forecast
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.
- Head to a lifeguarded beach; check the RNLI lifeguarded beach tool
- Follow RNLI Float to Live advice if you find yourself struggling in the water
- Know what to do if you get caught in a rip current (RNLI)
- Check the tide times to avoid getting cut off by the tide coming in
- Call 999 and ask for the coastguard in an emergency
- Learn more about staying safe at the beach
Forecast days
-
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 8° Celsius; -
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 10° Celsius;
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 10° Celsius;
-
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 9° Celsius; -
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 10° Celsius;
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 10° Celsius;
-
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 10° Celsius;
Maximum daytime temperature: 16° Celsius; Minimum nighttime temperature: 10° Celsius;
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 8° Celsius; -
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 7° Celsius;
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 7° Celsius;
Enjoy the beach but be aware that the wind may affect your control of direction
• Beginner paddleboarders/kayakers should go on the water with an instructor or a more experienced person • novice surfers seek expert advice
Tide: Next low tide (2.1m) at
Sunrise:
Sunset:
7 day forecast for Porth Tywyn Mawr (Sandy Beach)
| Time |
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 |  |
 |
|
|
 |
|
 |
|
|
|
|
|
|
|
|
|
|
 |
|
|
|
|
|
| Chance of precipitation |
90%
|
80%
|
80%
|
60%
|
40%
|
20%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature |
10°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
10°
|
11°
|
12°
|
13°
|
13°
|
14°
|
14°
|
15°
|
14°
|
13°
|
13°
|
12°
|
11°
|
10°
|
10°
|
| Feels like temperature (°C) |
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
7°
|
8°
|
9°
|
10°
|
10°
|
11°
|
12°
|
12°
|
13°
|
12°
|
12°
|
11°
|
11°
|
10°
|
9°
|
10°
|
| Wind direction and speed |
ESE
17
|
ESE
16
|
E
16
|
ESE
15
|
ESE
13
|
E
12
|
E
11
|
E
12
|
E
13
|
E
14
|
E
14
|
E
13
|
ENE
13
|
ENE
12
|
ENE
11
|
ENE
11
|
NE
10
|
NE
9
|
NE
8
|
NE
6
|
ENE
5
|
ENE
5
|
ENE
4
|
| Wind gust (mph) |
33
|
33
|
32
|
30
|
27
|
26
|
25
|
25
|
24
|
23
|
21
|
19
|
18
|
16
|
15
|
15
|
15
|
14
|
13
|
11
|
10
|
10
|
9
|
| Visibility |
M
|
G
|
G
|
VG
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
91%
|
92%
|
92%
|
92%
|
92%
|
90%
|
89%
|
87%
|
86%
|
83%
|
77%
|
74%
|
69%
|
67%
|
65%
|
66%
|
69%
|
71%
|
74%
|
79%
|
84%
|
84%
|
84%
|
| UV | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 4 | 4 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | - | - | - |
| Wind direction and speed |
17
|
17
|
16
|
15
|
13
|
12
|
11
|
11
|
12
|
13
|
13
|
13
|
12
|
12
|
11
|
11
|
10
|
9
|
8
|
6
|
5
|
5
|
4
|
| Height of waves offshore (m) |
0.6
|
0.7
|
0.7
|
0.7
|
0.6
|
0.5
|
0.5
|
0.5
|
0.5
|
0.5
|
0.5
|
0.5
|
0.4
|
0.4
|
0.3
|
0.3
|
0.3
|
0.3
|
0.3
|
0.3
|
0.2
|
0.2
|
0.2
|
| Period of waves offshore (s) |
7
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
8
|
| Direction of waves offshore |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Time |
00:00
|
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
 |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
10%
|
10%
|
10%
|
30%
|
40%
|
30%
|
30%
|
40%
|
| Temperature (°C) |
10°
|
10°
|
9°
|
9°
|
13°
|
14°
|
14°
|
14°
|
11°
|
| Feels like temperature (°C) |
10°
|
9°
|
8°
|
8°
|
12°
|
12°
|
13°
|
13°
|
10°
|
| Wind direction and speed (mph) |
E
4
|
E
4
|
ESE
4
|
ESE
4
|
S
6
|
SSW
8
|
WSW
7
|
S
6
|
SE
6
|
| Wind gust (mph) |
9
|
10
|
9
|
15
|
16
|
14
|
10
|
10
|
14
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
84%
|
84%
|
86%
|
85%
|
70%
|
68%
|
71%
|
77%
|
87%
|
| UV | - | - | - | 1 | 3 | 4 | 2 | 1 | - |
| Wind direction and speed (mph) |
4
|
4
|
4
|
4
|
6
|
9
|
7
|
6
|
6
|
| Height of waves offshore (m) |
0.2
|
0.2
|
0.2
|
0.2
|
0.2
|
0.2
|
0.2
|
0.2
|
0.1
|
| Period of waves offshore (s) |
8
|
8
|
8
|
6
|
4
|
5
|
7
|
7
|
9
|
| Direction of waves offshore |
|
|
|
|
|
|
|
|
|
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
50%
|
50%
|
70%
|
70%
|
70%
|
80%
|
80%
|
70%
|
| Temperature (°C) |
11°
|
11°
|
11°
|
12°
|
13°
|
13°
|
12°
|
11°
|
| Feels like temperature (°C) |
10°
|
9°
|
9°
|
9°
|
10°
|
11°
|
10°
|
9°
|
| Wind direction and speed (mph) |
SSE
7
|
SSE
8
|
SSE
9
|
SSE
13
|
SSE
14
|
S
12
|
S
11
|
SSE
10
|
| Wind gust (mph) |
17
|
18
|
22
|
23
|
22
|
23
|
21
|
19
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
| Humidity |
88%
|
88%
|
87%
|
89%
|
84%
|
84%
|
91%
|
92%
|
| UV | - | - | 1 | 1 | 2 | 1 | 1 | - |
| Wind direction and speed (mph) |
7
|
8
|
9
|
13
|
14
|
12
|
11
|
10
|
| Height of waves offshore (m) |
0.2
|
0.2
|
0.3
|
0.5
|
0.5
|
0.4
|
0.4
|
0.4
|
| Period of waves offshore (s) |
13
|
15
|
2
|
7
|
10
|
8
|
8
|
8
|
| Direction of waves offshore |
|
|
|
|
|
|
|
|
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
 |
|
|
|
| Chance of precipitation |
60%
|
40%
|
20%
|
10%
|
<5%
|
<5%
|
10%
|
20%
|
| Temperature (°C) |
10°
|
10°
|
9°
|
11°
|
12°
|
13°
|
12°
|
11°
|
| Feels like temperature (°C) |
8°
|
8°
|
8°
|
9°
|
10°
|
10°
|
9°
|
8°
|
| Wind direction and speed (mph) |
S
10
|
S
9
|
SSW
8
|
SSW
9
|
SSW
11
|
SSW
14
|
SSW
15
|
S
13
|
| Wind gust (mph) |
21
|
18
|
16
|
17
|
19
|
24
|
25
|
27
|
| Visibility (description) |
VG
|
VG
|
VG
|
E
|
E
|
E
|
E
|
VG
|
| Humidity |
93%
|
96%
|
95%
|
88%
|
79%
|
73%
|
83%
|
90%
|
| UV | - | - | 1 | 3 | 5 | 2 | 1 | - |
| Wind direction and speed (mph) |
10
|
9
|
8
|
10
|
12
|
15
|
15
|
14
|
| Height of waves offshore (m) |
0.5
|
0.5
|
0.4
|
0.3
|
0.2
|
0.3
|
0.4
|
0.5
|
| Period of waves offshore (s) |
9
|
13
|
14
|
14
|
14
|
14
|
5
|
4
|
| Direction of waves offshore |
|
|
|
|
|
|
|
|
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
30%
|
30%
|
20%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
10°
|
10°
|
10°
|
13°
|
14°
|
14°
|
13°
|
12°
|
| Feels like temperature (°C) |
8°
|
8°
|
7°
|
10°
|
11°
|
11°
|
10°
|
10°
|
| Wind direction and speed (mph) |
S
15
|
S
15
|
S
16
|
SSW
17
|
SSW
20
|
SSW
20
|
SSW
17
|
SSW
15
|
| Wind gust (mph) |
28
|
28
|
32
|
33
|
34
|
32
|
28
|
25
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
92%
|
94%
|
92%
|
87%
|
80%
|
78%
|
83%
|
88%
|
| UV | - | - | 1 | 3 | 4 | 2 | 1 | - |
| Wind direction and speed (mph) |
15
|
15
|
15
|
17
|
19
|
20
|
17
|
15
|
| Height of waves offshore (m) |
0.6
|
0.8
|
0.8
|
0.8
|
0.9
|
– | – | – |
| Period of waves offshore (s) |
5
|
5
|
5
|
6
|
5
|
– | – | – |
| Direction of waves offshore |
|
|
|
|
|
|
|
|
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
 |
| Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
12°
|
11°
|
11°
|
14°
|
16°
|
18°
|
16°
|
12°
|
| Feels like temperature (°C) |
9°
|
9°
|
10°
|
12°
|
14°
|
15°
|
14°
|
10°
|
| Wind direction and speed (mph) |
S
13
|
S
11
|
S
9
|
S
11
|
S
13
|
SSW
13
|
SSW
10
|
S
9
|
| Wind gust (mph) |
19
|
19
|
19
|
20
|
20
|
17
|
11
|
7
|
| Visibility (description) |
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
92%
|
91%
|
90%
|
79%
|
67%
|
61%
|
72%
|
86%
|
| UV | - | - | 1 | 2 | 4 | 2 | 1 | - |
| Wind direction and speed (mph) |
13
|
– | – | – | – | – | – | – |
| Height of waves offshore (m) | – | – | – | – | – | – | – | – |
| Period of waves offshore (s) | – | – | – | – | – | – | – | – |
| Direction of waves offshore |
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
11°
|
10°
|
11°
|
14°
|
16°
|
16°
|
14°
|
11°
|
| Feels like temperature (°C) |
9°
|
9°
|
10°
|
13°
|
14°
|
14°
|
12°
|
9°
|
| Wind direction and speed (mph) |
S
8
|
S
7
|
S
7
|
SW
10
|
NW
11
|
NNW
12
|
N
11
|
NNE
10
|
| Wind gust (mph) |
7
|
6
|
10
|
14
|
16
|
15
|
10
|
8
|
| Visibility (description) |
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
87%
|
90%
|
87%
|
72%
|
68%
|
68%
|
74%
|
87%
|
| UV | - | - | 1 | 3 | 5 | 2 | 1 | - |
| Wind direction and speed (mph) | – | – | – | – | – | – | – | – |
| Height of waves offshore (m) | – | – | – | – | – | – | – | – |
| Period of waves offshore (s) | – | – | – | – | – | – | – | – |
| Direction of waves offshore |
–
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
Tooltip header
Tide times
Wednesday 23 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 23 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 23 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 23 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 24 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 24 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 24 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 24 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 25 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 25 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 25 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 25 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 26 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 26 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 26 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 26 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 27 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 27 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 27 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 27 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 28 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 28 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 28 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 28 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 29 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 29 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 29 April
Tide times and heights are from Holyhead tidal station which is 2.3 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 29 April
Tide times and heights are from Holyhead tidal station which is 2.3 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
UK video forecast
Porth Tywyn Mawr (Sandy Beach) weather map
View the weather with our interactive map
Wales weather forecast
Headline:
Rain clearing on Wednesday.
This Evening and Tonight:
A band of heavy rain will move east across all areas before midnight, clearing to clear spells and sharp showers through the early hours. Gusty winds, these easing before dawn. Milder than Monday night. Minimum temperature 5 °C.
Wednesday:
A cloudy start for many on Wednesday with further spells of rain or sharp showers, these soon clearing with sunny spells developing into the afternoon. Feeling warm in the sunshine. Maximum temperature 16 °C.
Outlook for Thursday to Saturday:
Largely settled on Thursday with variable amounts of cloud and a few showers. Turning increasingly cloudy from Friday, as rain moves slowly but erratically in from the west. Normal temperatures.
Updated: