Merton Weather in September

September in Merton sees daytime temperatures around 18°C (64°F) and lows of 11°C (52°F) at night. With around 73 mm (2.9 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Merton in September

On average, there are about 16 days with rain during this month, averaging 73 mm (2.9 in). This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.

Temperature in Merton in September

In September, Merton gets pleasant temperatures, with highs of 18°C (64°F). Nights cool to around 11°C (52°F). September is in the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Merton in September

The area experiences a moderate amount of sunshine, with approximately 150 hours of sunlight expected. This means a decent mix of sun and overcast.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Merton.