Portrush Weather in September

September in Portrush sees daytime temperatures around 16°C (61°F) and lows of 12°C (54°F) at night. With around 108 mm (4.3 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Portrush in September

You can typically expect 20 days of rain this month, averaging around 108 mm (4.3 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Portrush in September

In September, expect moderate temperatures in Portrush, with highs of 16°C (61°F) and lows of 12°C (54°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. 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 Portrush in September

The area enjoys a balanced 118 hours of sunlight, ensuring it's neither too overcast nor too sunny.

If you prefer dry days with pleasant temperatures, June typically offers 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.