Penarth Weather in September

September in Penarth sees daytime temperatures around 19°C (66°F) and lows of 12°C (54°F) at night. With around 81 mm (3.2 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Penarth in September

Typically, about 15 days will experience rainfall, with an average of 81 mm (3.2 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Penarth in September

In September, Penarth sees pleasant temperatures, with highs of 19°C (66°F). Nights drop to around 12°C (54°F). The summer season takes place during September. The difference between afternoon and evening temperatures is usually noticeable. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Penarth in September

The city usually sees around 149 hours of sunlight, indicating a moderately sunny period.

Wind Speed in Penarth in September

September sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

Average water temperature in September

At 15°C (59°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United Kingdom, check out our Penarth's climate page.

Penarth Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 19°C (66°F)  

Water Temperature 15°C (59°F) *  

Chance of Rain 50%  

Precipitation 81 mm (3.2 in)  

Rainy days 15 days  

Humidity 81% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 149 hours *  

Percentage Sunshine 37% *  

* Data from: Cardiff, the United Kingdom (12 KM, 8 Miles).

What to Wear in Penarth in September

For Penarth in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 15°C (59°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Penarth in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Penarth's climate page.

More climate data for Penarth

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Penarth climate overview or explore weather in the United Kingdom.