Llanllyfni Weather in September

September in Llanllyfni brings moderate temperatures, with highs of 17°C (63°F) and nights dropping to 12°C (54°F). Rainfall is on the higher side this month, averaging around 127 mm (5 in), so keep a rain jacket handy.

Rainfall in Llanllyfni in September

Historically, approximately 17 days this month are expected to have rain, averaging 127 mm (5 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.

Temperature in Llanllyfni in September

In September, expect moderate temperatures in Llanllyfni, with highs of 17°C (63°F) and lows of 12°C (54°F) at night. The month of September belongs to the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 12°C (54°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Llanllyfni in September

With about 111 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If your ideal day consists of dry skies and pleasant temperatures, May, July and August typically offer the best circumstances for Llanllyfni.

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

Llanllyfni Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 56%  

Precipitation 127 mm (5 in)  

Rainy days 17 days  

Sunshine 111 hours *  

Percentage Sunshine *  

* Data from: Bala, the United Kingdom (47 KM, 29 Miles).

What to Wear in Llanllyfni in September

For Llanllyfni 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. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Llanllyfni in September

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

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 Llanllyfni's climate page.

More climate data for Llanllyfni

Temperature Rainfall Sunshine

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