Porthmadog (Gwynedd) weather
Find a forecast
Forecast days
-
Today. Maximum daytime temperature: 9 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: 08:02; Sunset: 16:58. UV: Low; Pollution: Low; No pollen data.Today. Maximum daytime temperature: 9 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: 08:02; Sunset: 16:58. UV: Low; Pollution: Low; No pollen data.
-
Wednesday 1 February. Maximum daytime temperature: 9 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Cloudy. Sunrise: 08:00; Sunset: 17:00. UV: Low; Pollution: Low; No pollen data.Wednesday 1 February. Maximum daytime temperature: 9 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Cloudy. Sunrise: 08:00; Sunset: 17:00. UV: Low; Pollution: Low; No pollen data.
-
Thursday 2 February. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Cloudy. Sunrise: 07:59; Sunset: 17:02. UV: Low; Pollution: Low; No pollen data.Thursday 2 February. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Cloudy. Sunrise: 07:59; Sunset: 17:02. UV: Low; Pollution: Low; No pollen data.
-
Friday 3 February. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Cloudy changing to sunny intervals in the afternoon. Sunrise: 07:57; Sunset: 17:04. UV: Low; Pollution: Low; No pollen data.Friday 3 February. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Cloudy changing to sunny intervals in the afternoon. Sunrise: 07:57; Sunset: 17:04. UV: Low; Pollution: Low; No pollen data.
-
Saturday 4 February. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Overcast. Sunrise: 07:55; Sunset: 17:06. UV: Low; No pollen data.Saturday 4 February. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Overcast. Sunrise: 07:55; Sunset: 17:06. UV: Low; No pollen data.
-
Sunday 5 February. Maximum daytime temperature: 9 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy. Sunrise: 07:54; Sunset: 17:08. UV: Low;Sunday 5 February. Maximum daytime temperature: 9 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy. Sunrise: 07:54; Sunset: 17:08. UV: Low;
-
Monday 6 February. Maximum daytime temperature: 8 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Overcast. Sunrise: 07:52; Sunset: 17:10. UV: Low;Monday 6 February. Maximum daytime temperature: 8 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Overcast. Sunrise: 07:52; Sunset: 17:10. UV: Low;
Seven day forecast for Porthmadog
| Time | 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 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | 10% | <5% | 10% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | 10% |
|
|
9°
|
9°
|
8°
|
8°
|
7°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
7°
|
7°
|
7°
|
7°
|
6°
|
6°
|
6°
|
7°
|
|
|
5° | 6° | 6° | 5° | 5° | 5° | 5° | 5° | 5° | 5° | 5° | 4° | 4° | 3° | 3° | 3° | 3° | 3° | 3° |
|
|
W
15
|
W
12
|
W
11
|
WNW
11
|
W
10
|
W
13
|
WNW
15
|
WNW
16
|
WNW
16
|
W
16
|
W
14
|
W
12
|
W
11
|
W
12
|
W
12
|
WSW
11
|
WSW
12
|
WSW
12
|
WSW
13
|
|
|
28 | 23 | 22 | 23 | 21 | 24 | 26 | 27 | 26 | 26 | 23 | 22 | 23 | 25 | 25 | 24 | 25 | 24 | 24 |
|
|
G | G | VG | VG | VG | E | E | E | E | E | E | E | E | E | E | E | E | E | E |
|
Humidity
|
89% | 90% | 87% | 77% | 75% | 69% | 63% | 62% | 59% | 60% | 60% | 66% | 69% | 69% | 71% | 74% | 75% | 78% | 79% |
|
UV
|
- | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
| 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 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | <5% | 10% |
|
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
8°
|
8°
|
8°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
8°
|
8°
|
8°
|
8°
|
8°
|
|
|
3° | 3° | 3° | 3° | 3° | 3° | 3° | 3° | 4° | 4° | 4° | 5° | 5° | 5° | 5° | 6° | 6° | 6° | 5° | 5° | 5° | 5° | 5° | 5° |
|
|
WSW
13
|
WSW
12
|
WSW
14
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
15
|
WSW
16
|
WSW
16
|
WSW
17
|
WSW
17
|
WSW
16
|
W
16
|
W
15
|
W
14
|
W
14
|
W
13
|
W
12
|
W
12
|
WSW
13
|
W
12
|
|
|
24 | 22 | 26 | 27 | 27 | 27 | 26 | 27 | 27 | 27 | 28 | 29 | 29 | 29 | 28 | 27 | 27 | 26 | 26 | 24 | 23 | 23 | 22 | 23 |
|
|
E | E | E | E | E | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG |
|
Humidity
|
78% | 79% | 80% | 80% | 82% | 82% | 82% | 82% | 82% | 82% | 81% | 80% | 79% | 80% | 81% | 81% | 82% | 84% | 84% | 86% | 87% | 88% | 88% | 89% |
|
UV
|
- | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
|
|
8°
|
8°
|
9°
|
9°
|
10°
|
10°
|
10°
|
10°
|
|
|
5° | 5° | 6° | 6° | 7° | 7° | 6° | 6° |
|
|
W
12
|
WSW
12
|
WSW
14
|
WSW
16
|
WSW
17
|
SW
16
|
SW
16
|
WSW
16
|
|
|
23 | 23 | 25 | 26 | 29 | 28 | 26 | 27 |
|
|
VG | VG | VG | VG | VG | VG | VG | VG |
|
Humidity
|
90% | 89% | 90% | 89% | 85% | 86% | 87% | 86% |
|
UV
|
- | - | - | 1 | 1 | 1 | - | - |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
|
|
9°
|
9°
|
9°
|
9°
|
10°
|
10°
|
9°
|
9°
|
|
|
6° | 6° | 6° | 6° | 7° | 7° | 6° | 6° |
|
|
WSW
16
|
WSW
16
|
WSW
14
|
WSW
14
|
SW
15
|
SW
15
|
SW
15
|
SW
15
|
|
|
27 | 26 | 23 | 23 | 25 | 25 | 24 | 25 |
|
|
VG | VG | VG | VG | VG | VG | G | G |
|
Humidity
|
89% | 90% | 91% | 92% | 89% | 89% | 93% | 92% |
|
UV
|
- | - | - | 1 | 1 | 1 | - | - |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
|
|
9°
|
9°
|
9°
|
9°
|
10°
|
10°
|
9°
|
8°
|
|
|
6° | 5° | 5° | 6° | 6° | 6° | 6° | 5° |
|
|
SW
15
|
SW
16
|
SW
17
|
SW
17
|
SW
18
|
SW
17
|
WSW
15
|
W
12
|
|
|
25 | 27 | 28 | 29 | 32 | 30 | 25 | 21 |
|
|
VG | VG | VG | VG | G | VG | G | VG |
|
Humidity
|
92% | 90% | 90% | 88% | 86% | 86% | 88% | 86% |
|
UV
|
- | - | - | 1 | 1 | 1 | - | - |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
|
|
7°
|
6°
|
6°
|
7°
|
8°
|
8°
|
7°
|
7°
|
|
|
4° | 4° | 4° | 5° | 6° | 6° | 4° | 4° |
|
|
WNW
10
|
NW
9
|
NW
8
|
NW
7
|
S
9
|
W
8
|
WSW
8
|
SW
7
|
|
|
17 | 15 | 13 | 12 | 16 | 15 | 12 | 12 |
|
|
VG | VG | VG | VG | VG | VG | VG | G |
|
Humidity
|
85% | 85% | 85% | 85% | 77% | 79% | 86% | 89% |
|
UV
|
- | - | - | 1 | 1 | 1 | - | - |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
|
|
7°
|
6°
|
6°
|
7°
|
8°
|
8°
|
7°
|
7°
|
|
|
4° | 4° | 4° | 4° | 5° | 5° | 4° | 4° |
|
|
SSW
7
|
S
8
|
SSE
9
|
S
10
|
WNW
11
|
SSW
12
|
S
12
|
S
12
|
|
|
12 | 13 | 14 | 16 | 20 | 21 | 19 | 20 |
|
|
G | G | G | G | VG | VG | G | G |
|
Humidity
|
90% | 91% | 92% | 91% | 85% | 84% | 88% | 88% |
|
UV
|
- | - | - | 1 | 1 | 1 | - | - |
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail and drizzle) will fall from the sky at a certain time.
This number shows the air temperature for the time period. You can see the temperature in Celsius or Fahrenheit by using the dropdown menu.
Feels like temperature considers other factors, such as wind speed and humidity. This gives you a better idea of how the temperature will actually feel at the time.
Wind gust shows the highest wind speed that you should encounter at that time, as winds peak and lull.
Strong winds are shown in bold for speeds of 29 mph or more.
The arrow shows the direction the wind is blowing. The letters show the direction the wind is blowing from (on a standard 16-point compass).
The number represents the average wind speed expected at that time.
Visibility measures the distance at which an object can be clearly seen.
| VP (Very Poor) | Less than 1 km |
| P (Poor) | 1.1 km to 4 km |
| M (Medium) | 4.1 km to 10 km |
| G (Good) | 10.1 km to 20 km |
| VG (Very Good) | 20.1 km to 40 km |
| E (Excellent) | Greater than 40 km |
Humidity is the amount of water vapor in the air. If there is a lot of water vapour, the humidity will be high. The higher the percentage of humidity, the wetter it will feel outside.
UV exposure index and the protection required to help keep you safe:
No risk of UV - It’s safe to stay outside. Low - You can safely stay outside. Consider sunscreen in direct sunlight. Moderate - Take care during midday hours and do not spend too much time in the sun unprotected. Sunscreen advised. High - Seek shade during midday hours, cover up and wear sunscreen. Very high - Spend time in the shade between 11am and 3pm. Shirt, sunscreen and hat are essential. Extreme - Avoid being outside during midday hours. Shirt, sunscreen and hat essential.
Wales weather forecast
Headline:
A cloudy start but bright and breezy this afternoon.
Today:
A cloudy and damp start for many but clearing through the morning leaving a largely dry day with bright spells though perhaps the odd blustery shower further north. Staying fairly windy and feeling cooler in the breeze. Maximum temperature 11 °C.
Tonight:
Fairly clear into the evening but perhaps a spot of cloud forming overnight. Staying windy, especially around coasts and across high ground. Touch of frost possible in sheltered spots. Minimum temperature 4 °C.
Wednesday:
A bright and breezy day with a fair amount of cloud around. Winds slowly easing later. Staying mild but once again perhaps feeling a bit cooler in the breeze. Maximum temperature 11 °C.
Outlook for Thursday to Saturday:
Staying windy Thursday and Friday with cloud and patchy rain at times both days. Staying rather cloudy again on Saturday with upslope patchy rain and drizzle possible. Mild throughout.
Updated:
UK long range weather forecast
Saturday is likely to be mostly cloudy, with some patchy rain and drizzle, especially for western upslopes. Some clear and sunny spells are possible to start, followed by a band of rain, locally heavy, approaching the southeast. Winds generally moderate, but locally strong in the north. Further into the period, more unsettled conditions are likely in the north and northwest, where longer spells of rain and strong winds are expected. The south is likely to see some drier spells, although some light rain or drizzle remain possible. Some overnight fog patches are possible in the south under clear skies. Winds varying from strong in the northwest to light in the southeast. Temperatures near normal or mild.
Updated:
This period is likely to be characterised by a continuation of changeable weather, with unsettled conditions more likely in the north. A longer spell of widely unsettled conditions is possible, bringing spells of wet and windy weather for all areas, with the wettest conditions remaining focused in the west. Temperatures generally around or slightly above average.
Updated:
