Harleston Weather in September

With daytime temperatures of 19°C (66°F) and nighttime lows of 12°C (54°F), September in Harleston brings pleasant temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 60 mm (2.4 in) falls on average.

Rainfall in Harleston in September

Looking at the last 30 years, the data shows about 12 days with rain, averaging 60 mm (2.4 in) for the month. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in Harleston in September

Temperatures in Harleston in September top out at 19°C (66°F) and drop to 12°C (54°F) overnight. September is a notable month of the summer season. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights drop to around 12°C (54°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 Harleston in September

The month brings about 151 hours of sunlight, offering a comfortable 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 Harleston.