Porthmadog (Gwynedd) weather

Forecast days

Seven day forecast for Porthmadog

Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather symbols Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Overcast Overcast
Chance of precipitation
<5% <5% 10% 10% 10% 10% 10% 20%
10°
10°
10°
10°
NNW 4
SSE 4
S 7
SSW 15
SSW 20
SSW 22
SSW 21
SW 20
5 6 14 26 37 39 36 33
VG G G G VG VG G G
Humidity
91% 94% 92% 86% 81% 83% 89% 92%
UV
- - - 1 2 1 1 -
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather symbols Light rain Light rain Cloudy Sunny intervals Sunny day Sunny day Light shower (day) Clear night
Chance of precipitation
50% 50% 10% 10% 10% 10% 30% <5%
10°
WSW 17
W 14
W 14
W 16
W 18
W 18
W 17
W 20
28 23 24 29 33 31 30 34
G G VG VG VG VG VG VG
Humidity
90% 85% 79% 72% 65% 63% 66% 69%
UV
- - - 1 3 2 1 -
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather symbols Partly cloudy (night) Cloudy Partly cloudy (night) Sunny intervals Light shower (day) Heavy shower (day) Heavy shower (day) Light shower (night)
Chance of precipitation
<5% 10% 10% 20% 40% 60% 60% 30%
W 21
W 22
W 22
W 24
WNW 23
WNW 23
WNW 20
NW 20
36 38 39 42 42 41 36 36
VG VG VG G G VG VG VG
Humidity
72% 74% 76% 75% 74% 70% 76% 79%
UV
- - - 1 3 1 1 -
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather symbols Cloudy Partly cloudy (night) Cloudy Cloudy Overcast Cloudy Cloudy Cloudy
Chance of precipitation
10% 10% 10% 10% 10% 10% 10% 10%
NW 19
NNW 17
NNW 14
NNW 15
NNW 13
NW 10
WNW 8
WNW 8
34 29 25 27 24 19 13 14
VG VG VG VG G VG VG VG
Humidity
79% 79% 79% 72% 65% 65% 71% 80%
UV
- - - 1 2 1 1 -
Time 00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
Weather symbols Cloudy Cloudy Cloudy Cloudy Sunny intervals Cloudy Sunny day Partly cloudy (night)
Chance of precipitation
10% 20% 20% 20% 20% 20% 10% 10%
W 10
NNE 11
NNW 12
NNW 14
N 15
NE 14
NE 13
NW 13
17 18 20 24 26 25 22 21
G G G G G G VG VG
Humidity
84% 85% 87% 80% 73% 70% 75% 79%
UV
- - - 1 2 1 1 -

UK video forecast

WARNING
Flood alerts icon
Flood alerts in force for Wales
Flood alerts in force for Wales

Wales weather forecast

Headline:

Cloud breaking to leave sunny spells and showers.

Today:

A damp and overcast start with outbreaks of drizzle giving way to brighter conditions during the morning. A few isolated showers possible during the afternoon, though most places staying dry. Mild with winds easing. Maximum temperature 15 °C.

Tonight:

Dry to start this evening before cloud thickens from the south, with outbreaks of rain pushing northwards across the country overnight. Mild with light winds. Minimum temperature 7 °C.

Wednesday:

Often cloudy with outbreaks of rain, especially in the north through the morning before becoming patchier through the day. Remaining mild with light winds. Maximum temperature 14 °C.

Outlook for Thursday to Saturday:

Largely dry to start on Thursday with rain and drizzle arriving later. Sunny spells and blustery scattered showers on Friday and Saturday, these heavy at times and turning chillier.

Updated:

UK long range weather forecast

Sunny spells and showers across the UK on Saturday. The showers will heavy and thundery at times, perhaps with hail in places. The showers are expected to gradually die out from the northwest later in the day, with most places dry by the evening. Mainly dry Sunday morning with sunny spells before cloud increases from the west later, some rain probably reaching western areas later in the day. Temperatures are expected to be below normal over the weekend. Into the following week, unsettled conditions will likely develop across many parts with Atlantic frontal systems spreading in from the west. All areas will see periods of wet weather, with some drier spells in-between. Rainfall amounts will probably be highest in the south, with northern areas slightly drier but cooler.

Updated:

Into April pressure is likely to be higher than average to the north of the UK, with low pressure more likely to the west or southwest. This pattern tends to push the focus of unsettled weather further south than usual, with highest rainfall most likely to be in the south of the UK. Conversely, northern areas tend to be drier compared to normal. Temperatures will probably be near average or slightly above overall, with any cooler interludes most likely in the north.

Updated:

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