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Future weather extremes likely to break new records
Increasingly extreme weather is one of the most damaging and costly impacts from climate change.
Read morePorthmadog (Gwynedd) weather
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Forecast days
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Today. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Cloudy changing to light showers in the afternoon. Sunrise: 07:04; Sunset: 16:56. UV: Low; Pollution: Low; No pollen data.
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Tuesday 27 October. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Light rain changing to partly cloudy by early evening. Sunrise: 07:06; Sunset: 16:54. UV: Low; Pollution: Low; No pollen data.
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Wednesday 28 October. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Clear changing to light showers by late morning. Sunrise: 07:08; Sunset: 16:52. UV: Low; Pollution: Low; No pollen data.
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Thursday 29 October. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Heavy rain. Sunrise: 07:10; Sunset: 16:50. UV: Low; Pollution: Low; No pollen data.
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Friday 30 October. Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Light rain. Sunrise: 07:11; Sunset: 16:48. UV: Low; Pollution: Low; No pollen data.
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Saturday 31 October. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Light rain. Sunrise: 07:13; Sunset: 16:46. UV: Low;
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Sunday 1 November. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Light showers changing to cloudy by late morning. Sunrise: 07:15; Sunset: 16:44. UV: Low;
Seven day forecast for Porthmadog
Today (26 October 2020)
| Time | Now | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation | 10% | 20% | 40% | 50% | <5% | 10% | 40% | <5% | 10% | <5% | <5% |
| Temperature (°C) |
12°
|
12°
|
11°
|
10°
|
10°
|
10°
|
10°
|
9°
|
9°
|
9°
|
9°
|
| Feels like temperature (°C) | 9° | 8° | 8° | 8° | 8° | 7° | 7° | 7° | 7° | 7° | 7° |
| Wind direction and speed (miles per hour) |
W
17
|
W
18
|
W
14
|
W
12
|
WSW
10
|
W
11
|
W
12
|
WNW
12
|
WNW
9
|
W
8
|
W
9
|
| Wind gust (miles per hour) | 25 | 28 | 26 | 24 | 21 | 24 | 24 | 27 | 22 | 20 | 19 |
| Visibility | VG | VG | VG | E | E | E | VG | E | E | E | E |
| Humidity | 74% | 72% | 73% | 78% | 80% | 79% | 81% | 80% | 81% | 85% | 83% |
| UV | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Tuesday (27 October 2020)
| 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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|
|
|
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|
| Chance of precipitation | <5% | <5% | 10% | 10% | 20% | 90% | 60% | 60% | 60% | 60% | 60% | 60% | 40% | 30% | 30% | 30% | 30% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
| Temperature (°C) |
9°
|
9°
|
9°
|
9°
|
10°
|
10°
|
10°
|
10°
|
10°
|
11°
|
11°
|
12°
|
13°
|
13°
|
12°
|
12°
|
11°
|
11°
|
11°
|
10°
|
10°
|
11°
|
11°
|
11°
|
| Feels like temperature (°C) | 6° | 6° | 7° | 7° | 8° | 7° | 7° | 7° | 7° | 7° | 8° | 8° | 10° | 9° | 9° | 9° | 8° | 8° | 8° | 7° | 8° | 7° | 7° | 7° |
| Wind direction and speed (miles per hour) |
W
9
|
W
8
|
W
8
|
WSW
8
|
SW
12
|
SSW
15
|
S
18
|
S
16
|
SSE
16
|
SSE
18
|
S
20
|
S
24
|
WSW
15
|
WSW
17
|
WSW
17
|
WSW
16
|
WSW
16
|
WSW
15
|
WSW
14
|
WSW
12
|
WSW
15
|
WSW
16
|
SW
17
|
SW
20
|
| Wind gust (miles per hour) | 21 | 18 | 16 | 16 | 20 | 24 | 27 | 24 | 27 | 30 | 32 | 38 | 27 | 28 | 28 | 28 | 27 | 26 | 26 | 25 | 28 | 29 | 29 | 33 |
| Visibility | E | E | E | E | VG | M | G | M | M | G | M | M | VG | VG | VG | VG | VG | E | E | E | E | E | E | E |
| Humidity | 83% | 81% | 82% | 80% | 78% | 83% | 91% | 93% | 92% | 90% | 89% | 91% | 86% | 80% | 78% | 75% | 75% | 76% | 74% | 75% | 71% | 69% | 71% | 72% |
| UV | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Wednesday (28 October 2020)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 50% | 40% | 20% | 50% | 20% | 20% | <5% | <5% |
| Temperature (°C) |
10°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
10°
|
| Feels like temperature (°C) | 7° | 7° | 7° | 8° | 7° | 8° | 7° | 7° |
| Wind direction and speed (miles per hour) |
WSW
18
|
SW
19
|
SW
20
|
SW
21
|
SW
20
|
WSW
21
|
WSW
20
|
WSW
20
|
| Wind gust (miles per hour) | 31 | 31 | 33 | 34 | 33 | 35 | 33 | 34 |
| Visibility | E | E | VG | E | VG | VG | VG | VG |
| Humidity | 75% | 78% | 73% | 71% | 72% | 67% | 68% | 71% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Thursday (29 October 2020)
| 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% | 70% | 90% | ≥95% | 90% | 80% | 80% |
| Temperature (°C) |
10°
|
11°
|
11°
|
13°
|
14°
|
14°
|
14°
|
14°
|
| Feels like temperature (°C) | 7° | 7° | 8° | 9° | 9° | 10° | 10° | 10° |
| Wind direction and speed (miles per hour) |
WSW
19
|
WSW
18
|
SSW
18
|
SSW
24
|
SW
25
|
SW
26
|
SW
25
|
SW
26
|
| Wind gust (miles per hour) | 32 | 30 | 29 | 39 | 42 | 43 | 42 | 43 |
| Visibility | VG | VG | P | P | P | G | M | M |
| Humidity | 73% | 74% | 86% | 91% | 91% | 90% | 91% | 92% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Friday (30 October 2020)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 80% | 60% | 60% | 80% | 60% | 60% | 60% | 60% |
| Temperature (°C) |
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
| Feels like temperature (°C) | 10° | 11° | 10° | 10° | 11° | 11° | 10° | 11° |
| Wind direction and speed (miles per hour) |
SW
24
|
SW
22
|
SW
22
|
SW
22
|
SW
22
|
SW
21
|
SW
20
|
SSW
19
|
| Wind gust (miles per hour) | 40 | 37 | 36 | 37 | 37 | 36 | 34 | 32 |
| Visibility | M | G | M | M | G | M | M | M |
| Humidity | 92% | 92% | 93% | 92% | 91% | 90% | 92% | 93% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Saturday (31 October 2020)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 80% | 80% | 60% | 60% | 60% | 60% | 50% | 70% |
| Temperature (°C) |
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
13°
|
| Feels like temperature (°C) | 10° | 10° | 10° | 10° | 10° | 10° | 9° | 9° |
| Wind direction and speed (miles per hour) |
S
20
|
SSW
21
|
SSW
23
|
SSW
24
|
SSW
26
|
SSW
26
|
SSW
26
|
SSW
26
|
| Wind gust (miles per hour) | 33 | 36 | 39 | 41 | 44 | 44 | 45 | 44 |
| Visibility | M | M | M | M | M | G | G | G |
| Humidity | 93% | 93% | 92% | 90% | 89% | 85% | 83% | 84% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Sunday (1 November 2020)
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 50% | 50% | 50% | 40% | 30% | 20% | 20% | 50% |
| Temperature (°C) |
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
| Feels like temperature (°C) | 9° | 8° | 8° | 8° | 9° | 9° | 9° | 9° |
| Wind direction and speed (miles per hour) |
SSW
27
|
SSW
27
|
SSW
28
|
SW
26
|
SW
24
|
SW
23
|
SW
23
|
SW
22
|
| Wind gust (miles per hour) | 45 | 46 | 47 | 44 | 41 | 40 | 38 | 38 |
| Visibility | G | M | G | VG | VG | G | G | G |
| Humidity | 83% | 83% | 84% | 81% | 78% | 80% | 81% | 83% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Wales weather forecast
Headline:
Sunny spells and blustery showers, possibly thundery.
Today:
A typically autumnal day with a mix of sunny spells and scattered blustery showers, often heavy and in the morning possibly thundery at times. Windy, especially in coastal areas and when showers come along. Maximum temperature 12 °C.
Tonight:
Showers calming down through the evening period and winds easing. Then a band of rain to the west approaching, reaching the far southwest by the end of the night. Minimum temperature 3 °C.
Tuesday:
The band of rain continues eastward through the morning, clearing eastern parts by early afternoon. Sunny spells and blustery showers following behind through the rest of the day. Maximum temperature 14 °C.
Outlook for Wednesday to Friday:
Sunny spells and blustery showers on Wednesday. Thursday and Friday staying unsettled with more persistent rain, heavy over the hills. Windy with risk of gales, but turning milder.
Updated:
UK long range weather forecast
Unsettled conditions are expected to dominate for the rest of October, with showers or longer spells of rain interspersed with occasional sunny spells. Strong winds are also likely with gales possible at times. The wettest, windiest weather is most likely in the north and west of the UK whilst the best of any drier or brighter weather across the south and east. It will become milder however. A change to generally drier, more settled conditions is probable during early November with any strong winds, showers or longer spells of rain most likely confined to northern areas. Elsewhere winds will probably become mainly light. These more settled conditions bring an increased risk of colder weather with overnight frost and morning fog, particularly across the south.
Updated:
For the remainder of November, it is likely to be a tale of 2 halves. The start of this period looks set to see high pressure dominate, bringing more settled conditions than seen in recent times, particularly for the south with any wet and windy weather most likely to affect the north-west. Although confidence lowers toward the end of November, a return to unsettled autumnal weather is most likely, with showers or longer spells of rain and strong winds, interspersed with drier intervals. Overall, temperatures are anticipated to be at or below average for this time of year.
Updated:
