Porthmadog weather live forecast

Today's maximum temperature in Porthmadog is expected to be 11°C. Select a day from the live weather forecast for Porthmadog, Wales, UK for more weather parameters.

Sunday
14th Dec
11

10

0

0
Monday
15th Dec
11

8

0

0
Tuesday
16th Dec
9

5

2

0
Wednesday
17th Dec
11

6

0

0
Thursday
18th Dec
11

8

0

0

5-day weather forecast updated at 04:04 on Sunday 14th December 2025 GMT

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The 5-day weather forecast for Wales (Porthmadog) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Porthmadog weather forecast by day

Below are the detailed weather forecasts for Porthmadog for the next 5 days.

Porthmadog weather for Sunday 14th December 2025

Expect cloudy with some rain in Porthmadog, Wales with a maximum temperature of 11°C and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 94% chance of some rain and a strong breeze of 47 kph from the south.

11
°C maximum temperature
10
°C minimum temperature
cloudy with some rain
0
hours of sunshine
0
UV index (None)
94
% chance of some rain
<30
mm of rainfall expected
11
°C wind chill
47
kph wind from S

Porthmadog weather for Monday 15th December 2025

Expect overcast with light rain in Porthmadog, Wales with a maximum temperature of 11°C and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 92% chance of some rain and a strong breeze of 40 kph from the south.

11
°C maximum temperature
8
°C minimum temperature
overcast with light rain
0
hours of sunshine
0
UV index (None)
92
% chance of some rain
<10
mm of rainfall expected
11
°C wind chill
40
kph wind from S

Porthmadog weather for Tuesday 16th December 2025

Expect broken clouds in Porthmadog, Wales with a maximum temperature of 9°C and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.

9
°C maximum temperature
5
°C minimum temperature
broken clouds
2
hours of sunshine
0
UV index (None)
0
mm of rainfall expected
6
°C wind chill
18
kph wind from S

Porthmadog weather for Wednesday 17th December 2025

Expect overcast with light rain in Porthmadog, Wales with a maximum temperature of 11°C and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 90% chance of some rain and a strong breeze of 44 kph from the south.

11
°C maximum temperature
6
°C minimum temperature
overcast with light rain
0
hours of sunshine
0
UV index (None)
90
% chance of some rain
<30
mm of rainfall expected
0
no heat & humidity
44
kph wind from S

Porthmadog weather for Thursday 18th December 2025

Expect cloudy with some rain in Porthmadog, Wales with a maximum temperature of 11°C and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 89% chance of some rain and a fresh gale of 67 kph from the south-west.