Porthmadog weather in September (Gwynedd, United Kingdom)

Will it be rainy or sunny in Porthmadog this September? Here's what you need to know about the weather for the month.

Temperatures

In September, Porthmadog tends to experience moderate temperatures and high rainfall. September is a notable month of the summer season. In the daytime, temperatures tend to hover near 17°C, cooling down at night to around 11°C.

Precipitation

Porthmadog in September usually receives high rainfall, averaging around 122 mm for the month. Based on our climate data of the past 30 years, about 17 days of rain are anticipated.

Average sunshine

The month experiences a moderate amount of sunlight, with 111 hours hours. A nice balance between sunshine and clouds.

If your ideal day consists of dry skies and moderate temperatures May, July and August generally stand out with the best circumstances. While January, February, March, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Porthmadog climate page with graphs.

 

Porthmadog, monthly averages in September

Min Temperature 11°C  

Max Temperature 17°C  

Chance of Rain 57%  

Precipitation 122 mm  

Rainy days 17 days  

Sunshine 111 hours *  

Percentage Sunshine *  

Data from: Bala, the United Kingdom (35 KM, 22 Miles).

Where to go in the United Kingdom in September

Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Porthmadog, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

5/10

Walking

5/10

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Porthmadog.

Our site offers climate and forecast data for every country in the world. Are you going to the United Kingdom? On this website you can find historical weather averages for many cities in the United Kingdom. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.