Pennal Weather in September

September in Pennal averages 17°C (63°F) during the day and 10°C (50°F) at night. Quite a bit of rainfall is typical this month, with around 101 mm (4 in) on average. An umbrella is a good idea.

Rainfall in Pennal in September

You can expect rain on roughly 17 days based on historical data, averaging 101 mm (4 in) for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in Pennal in September

In September, expect moderate temperatures in Pennal, with highs of 17°C (63°F) and lows of 10°C (50°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to around 10°C (50°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Pennal in September

The area experiences a moderate amount of sunshine, with approximately 111 hours of sunlight expected. This means a decent mix of sun and overcast.

If you prefer enjoying temperate temperatures and rain-free days, June and July typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.