Seaham Weather in September

September in Seaham averages 18°C (64°F) during the day and 11°C (52°F) at night. Quite a bit of rainfall is typical this month, with around 63 mm (2.5 in) on average. An umbrella is a good idea.

Rainfall in Seaham in September

Based on our climate data of the past 30 years, about 14 days of rain are anticipated, with 63 mm (2.5 in) on average. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Seaham in September

In September, Seaham sees moderate temperatures, with highs of 18°C (64°F). Nights drop to around 11°C (52°F). September is part of summer. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to around 11°C (52°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 Seaham in September

The month brings about 140 hours of sunlight, offering a comfortable mix of sun and overcast.

For Seaham itself, July and August 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.