Porthmadog weather live forecast

Today's maximum temperature in Porthmadog is expected to be 8°C. Select a day from the live weather forecast for Porthmadog, Wales, UK for more weather parameters.

Wednesday
14th Jan
8

3

1

0
Thursday
15th Jan
8

6

2

0
Friday
16th Jan
8

4

2

0
Saturday
17th Jan
7

3

7

0
Sunday
18th Jan
8

3

1

0

5-day weather forecast updated at 04:05 on Monday 12th January 2026 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 Wednesday 14th January 2026

Expect mostly cloudy with rain in Porthmadog, Wales with a maximum temperature of 8°C and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 95% chance of some rain and a moderate breeze of 28 kph from the south.

8
°C maximum temperature
3
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
0
UV index (None)
95
% chance of some rain
<20
mm of rainfall expected
4
°C wind chill
28
kph wind from S

Porthmadog weather for Thursday 15th January 2026

Expect mostly cloudy with rain in Porthmadog, Wales with a maximum temperature of 8°C and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 14 kph from the south-west.

8
°C maximum temperature
6
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
0
UV index (None)
79
% chance of some rain
<10
mm of rainfall expected
6
°C wind chill
14
kph wind from SW

Porthmadog weather for Friday 16th January 2026

Expect broken clouds in Porthmadog, Wales with a maximum temperature of 8°C and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-east.

8
°C maximum temperature
4
°C minimum temperature
broken clouds
2
hours of sunshine
0
UV index (None)
0
mm of rainfall expected
5
°C wind chill
13
kph wind from SE

Porthmadog weather for Saturday 17th January 2026

Expect sunshine and showers in Porthmadog, Wales with a maximum temperature of 7°C and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 39% chance of some rain and a gentle breeze of 16 kph from the south-east.

7
°C maximum temperature
3
°C minimum temperature
sunshine and showers
7
hours of sunshine
0
UV index (None)
39
% chance of some rain
<5
mm of rainfall expected
4
°C wind chill
16
kph wind from SE

Porthmadog weather for Sunday 18th January 2026

Expect mostly cloudy with rain in Porthmadog, Wales with a maximum temperature of 8°C and 1 hour of bright sunshine. There are 50 mm or more of rainfall expected with 80% chance of some rain and a fresh breeze of 32 kph from the south.