Which is the hottest month in Porthmadog?

The hottest time of year in Porthmadog is normally July. Expect maximum daytime temperatures to reach 18°C.

Which month has the most rain in Porthmadog?

In terms of rainfall, December is usually the wettest month in Porthmadog with 202mm on average. There are normally 20 days in December with some rain.

When is it sunniest in Porthmadog?

The sunniest time of year in Porthmadog is normally May with bright sunshine on average for 38% of daylight hours; that's 6 hours of sunshine per day.

When is the sea warmest in Porthmadog?

The sea is usually at its warmest in Porthmadog in August when the water temperature reaches 17°C.

Best time to visit Porthmadog

Q: When is the best time to visit Porthmadog?

The best time to visit Porthmadog is June, July and August based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

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Porthmadog by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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When is the best time to visit Porthmadog?

The best time to visit Porthmadog is June, July and August based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0
Feb
0
Mar
1
Apr
1.5
May
1.5
Jun
1.5
Jul
1.5
Aug
0.5
Sep
0
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°C)

7
Jan
7
Feb
8
Mar
11
Apr
14
May
17
Jun
18
Jul
18
Aug
16
Sep
13
Oct
9
Nov
8
Dec

Hours of Sunshine (daily)

1
Jan
2
Feb
3
Mar
5
Apr
6
May
6
Jun
5
Jul
5
Aug
4
Sep
3
Oct
2
Nov
1
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Wales (Porthmadog) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)