News
Storm Christoph has been named
Storm Christoph will bring heavy rain, snow and strong winds.
Read morePorth Tywyn Mawr (Sandy Beach) (Isle of Anglesey) weather
Find a forecast
Forecast days
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Today. Maximum daytime temperature: 8 degrees Celsius; Minimum nighttime temperature: 4 degrees Celsius. Heavy rain. Sunrise: 08:21; Sunset: 16:39. UV: Low; Pollution: Low; No pollen data.
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Thursday 21 January. Maximum daytime temperature: 7 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Light showers changing to cloudy by late morning. Sunrise: 08:20; Sunset: 16:40. UV: Low; Pollution: Low; No pollen data.
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Friday 22 January. Maximum daytime temperature: 6 degrees Celsius; Minimum nighttime temperature: 3 degrees Celsius. Partly cloudy changing to sunny by late morning. Sunrise: 08:18; Sunset: 16:42. UV: Low; Pollution: Low; No pollen data.
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Saturday 23 January. Maximum daytime temperature: 6 degrees Celsius; Minimum nighttime temperature: 2 degrees Celsius. Cloudy changing to sunny intervals by lunchtime. Sunrise: 08:17; Sunset: 16:44. UV: Low; Pollution: Low; No pollen data.
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Sunday 24 January. Maximum daytime temperature: 6 degrees Celsius; Minimum nighttime temperature: 4 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: 08:16; Sunset: 16:46. UV: Low; No pollen data.
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Monday 25 January. Maximum daytime temperature: 7 degrees Celsius; Minimum nighttime temperature: 3 degrees Celsius. Partly cloudy changing to sunny intervals by late morning. Sunrise: 08:14; Sunset: 16:48. UV: Low;
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Tuesday 26 January. Maximum daytime temperature: 7 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy changing to light rain in the afternoon. Sunrise: 08:13; Sunset: 16:50. UV: Low;
Seven day forecast for Porth Tywyn Mawr (Sandy Beach)
Today (20 January 2021)
| Time | Now | 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 symbol |
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| Chance of precipitation | 50% | 10% | 50% | 10% | 10% | 20% | 40% | 80% | 90% | 90% | ≥95% | ≥95% | ≥95% | ≥95% | ≥95% | 90% | 90% | 90% | 80% | 60% | 60% | 60% | 40% |
| Temperature (°C) |
10°
|
10°
|
10°
|
10°
|
10°
|
8°
|
8°
|
7°
|
7°
|
7°
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7°
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6°
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6°
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6°
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5°
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5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
6°
|
5°
|
| Feels like temperature (°C) | 6° | 6° | 6° | 6° | 6° | 5° | 5° | 5° | 4° | 4° | 3° | 3° | 2° | 2° | 1° | 0° | 0° | 1° | 1° | 1° | 0° | 1° | 0° |
| Wind direction and speed (miles per hour) |
SW
24
|
SW
24
|
SW
22
|
SW
22
|
SW
19
|
NW
14
|
N
9
|
N
10
|
N
10
|
N
12
|
N
13
|
N
14
|
N
15
|
NNW
16
|
NNW
16
|
N
16
|
N
13
|
N
12
|
NW
12
|
NW
14
|
NW
17
|
NW
21
|
WNW
19
|
| Wind gust (miles per hour) | 35 | 35 | 33 | 33 | 29 | 19 | 13 | 13 | 14 | 16 | 17 | 18 | 20 | 21 | 21 | 21 | 18 | 16 | 16 | 19 | 23 | 27 | 27 |
| Visibility | M | M | M | M | G | G | G | M | M | M | M | P | M | M | M | M | M | G | G | G | G | G | VG |
| Humidity | 97% | 96% | 95% | 95% | 93% | 96% | 97% | 97% | 97% | 95% | 94% | 94% | 95% | 93% | 93% | 93% | 94% | 92% | 88% | 86% | 84% | 78% | 83% |
| UV | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Thursday (21 January 2021)
| 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 symbol |
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| Chance of precipitation | 40% | 60% | 30% | 40% | 40% | 40% | 30% | 30% | 10% | 10% | 10% | 10% | 50% | 40% | 10% | 10% | 10% | <5% | 10% | <5% | <5% | <5% | <5% | <5% |
| Temperature (°C) |
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
6°
|
5°
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6°
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6°
|
6°
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6°
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6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
| Feels like temperature (°C) | 0° | 0° | -1° | -1° | -1° | -1° | -1° | -1° | -1° | 0° | 0° | 0° | 0° | 0° | 1° | 1° | 2° | 2° | 2° | 2° | 1° | 1° | 1° | 1° |
| Wind direction and speed (miles per hour) |
WNW
23
|
W
23
|
W
24
|
W
25
|
W
25
|
W
25
|
W
24
|
W
23
|
W
24
|
WSW
24
|
WSW
24
|
WSW
25
|
WSW
27
|
W
24
|
WNW
22
|
WNW
23
|
WNW
22
|
WNW
21
|
WNW
21
|
WNW
21
|
WNW
21
|
WNW
21
|
WNW
21
|
WNW
21
|
| Wind gust (miles per hour) | 31 | 32 | 33 | 34 | 35 | 34 | 33 | 32 | 33 | 34 | 34 | 36 | 38 | 34 | 32 | 32 | 31 | 29 | 29 | 30 | 30 | 30 | 30 | 30 |
| Visibility | VG | VG | VG | E | VG | E | E | E | E | E | E | VG | VG | G | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG |
| Humidity | 83% | 86% | 86% | 82% | 83% | 81% | 79% | 80% | 80% | 79% | 77% | 78% | 81% | 82% | 78% | 76% | 76% | 76% | 76% | 75% | 77% | 76% | 76% | 78% |
| UV | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Friday (22 January 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | <5% | <5% | <5% | <5% | <5% | 10% | 10% | 10% |
| Temperature (°C) |
6°
|
6°
|
5°
|
5°
|
6°
|
6°
|
5°
|
5°
|
| Feels like temperature (°C) | 1° | 1° | 1° | 1° | 2° | 2° | 1° | 1° |
| Wind direction and speed (miles per hour) |
WNW
21
|
WNW
19
|
WNW
16
|
W
16
|
W
17
|
W
15
|
W
14
|
W
13
|
| Wind gust (miles per hour) | 30 | 28 | 25 | 24 | 27 | 24 | 22 | 20 |
| Visibility | VG | VG | VG | VG | VG | VG | VG | VG |
| Humidity | 78% | 78% | 79% | 79% | 72% | 70% | 72% | 74% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Saturday (23 January 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
| Temperature (°C) |
4°
|
4°
|
4°
|
3°
|
5°
|
5°
|
4°
|
4°
|
| Feels like temperature (°C) | 1° | 0° | 0° | 0° | 1° | 1° | -1° | 0° |
| Wind direction and speed (miles per hour) |
W
12
|
W
11
|
WNW
12
|
WNW
12
|
WNW
13
|
WNW
14
|
WNW
14
|
WNW
15
|
| Wind gust (miles per hour) | 19 | 18 | 18 | 19 | 22 | 23 | 23 | 23 |
| Visibility | VG | VG | VG | G | VG | VG | VG | VG |
| Humidity | 78% | 80% | 83% | 82% | 75% | 70% | 79% | 77% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Sunday (24 January 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | <5% | 10% | 10% | 10% | 10% | 10% | <5% | 10% |
| Temperature (°C) |
4°
|
3°
|
4°
|
4°
|
5°
|
5°
|
4°
|
4°
|
| Feels like temperature (°C) | 0° | -1° | 0° | 0° | 1° | 1° | 0° | 0° |
| Wind direction and speed (miles per hour) |
WNW
14
|
W
13
|
W
13
|
WSW
13
|
W
13
|
WNW
15
|
WNW
14
|
WNW
14
|
| Wind gust (miles per hour) | 22 | 21 | 20 | 20 | 22 | 24 | 22 | 22 |
| Visibility | VG | VG | VG | VG | VG | VG | VG | VG |
| Humidity | 77% | 78% | 78% | 82% | 77% | 76% | 76% | 77% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Monday (25 January 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
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|
|
|
|
|
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| Chance of precipitation | <5% | 10% | <5% | 10% | <5% | <5% | <5% | 10% |
| Temperature (°C) |
4°
|
4°
|
5°
|
5°
|
6°
|
6°
|
5°
|
5°
|
| Feels like temperature (°C) | 0° | 0° | 0° | 1° | 2° | 2° | 2° | 1° |
| Wind direction and speed (miles per hour) |
WNW
14
|
WNW
15
|
WNW
15
|
WNW
14
|
WNW
15
|
WNW
13
|
WNW
11
|
WNW
11
|
| Wind gust (miles per hour) | 23 | 24 | 24 | 23 | 24 | 21 | 18 | 17 |
| Visibility | VG | VG | VG | VG | VG | VG | VG | VG |
| Humidity | 80% | 80% | 79% | 82% | 75% | 75% | 77% | 79% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Tuesday (26 January 2021)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
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| Chance of precipitation | 10% | 10% | 10% | 20% | 20% | 50% | 50% | 50% |
| Temperature (°C) |
4°
|
4°
|
4°
|
5°
|
6°
|
6°
|
6°
|
6°
|
| Feels like temperature (°C) | 1° | 1° | 1° | 1° | 2° | 2° | 2° | 2° |
| Wind direction and speed (miles per hour) |
W
10
|
SSW
10
|
SSW
9
|
SSW
11
|
SSW
14
|
S
15
|
SSW
16
|
SW
16
|
| Wind gust (miles per hour) | 16 | 15 | 14 | 18 | 22 | 24 | 25 | 25 |
| Visibility | VG | VG | VG | G | G | G | G | G |
| Humidity | 81% | 84% | 86% | 85% | 83% | 85% | 88% | 88% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
WARNING
Flood warnings
Flood warnings in force
for Wales.
Wales weather forecast
Headline:
Persistent heavy rain associated with Storm Christoph. Flood risk.
This Evening and Tonight:
Spells of prolonged and heavy rain continue through this evening and overnight, leading to a flood risk. The most persistent and heavy rain over high ground and across the north with snowmelt. Mild and windy. Minimum temperature 7 °C.
Wednesday:
Further spells of heavy rain throughout Wednesday with an ongoing flood risk. Drier interludes possible in the south before further rain in the evening. Overnight rain clears, with showers following. Maximum temperature 11 °C.
Outlook for Thursday to Saturday:
Colder with scattered wintry showers and sunny spells between on Thursday. Sunny spells but turning cloudier with showers on Friday. Sunshine and scattered showers on Saturday. Overnight frosts.
Updated:
UK long range weather forecast
At the start of this period it will remain unsettled with north-westerly winds likely, bringing frequent showers and outbreaks of rain, particularly to the north and west. Likely falling as snow over high ground and at times to lower levels. Windy, especially in the north. Into this period unsettled conditions look most likely with low pressure dominant across the UK, bringing changeable weather with periods of rain, showers and strong winds at times. Northerly winds are expected at times, which increases the risk of snowfall especially in the north but may bring wintry hazards further south. In the south milder interludes may occur at times bringing at or above average temperatures. Overall temperatures are likely to be rather cold in the north but close to average in the south.
Updated:
Confidence for this period is low, though low pressure is likely to be dominant at first with an increased chance of northerly winds. This will therefore increase the risk of snowfall especially in the north along with colder than average temperatures. Potentially bringing wintry hazards more widely. Through mid-February higher pressure may develop for a time which would bring drier conditions with an increased likelihood of fog and cold nights.
Updated:
