Holywood Weather in September

During September, Holywood experiences moderate daytime temperatures of 17°C (63°F) and cooler nights around 9°C (48°F). Expect quite a bit of rainfall. Around 94 mm (3.7 in) is typical.

Rainfall in Holywood in September

Typically, about 18 days will experience rainfall, with an average of 94 mm (3.7 in) for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Holywood in September

In September, Holywood sees moderate temperatures, with highs of 17°C (63°F). Nights drop to around 9°C (48°F). The difference between afternoon and evening temperatures is usually noticeable. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Holywood in September

The month has fewer sunny days, with around 95 hours of sunshine.

For Holywood itself, June and July generally stand out with 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.