Grangemouth Weather in September

With daytime temperatures of 17°C (63°F) and nighttime lows of 10°C (50°F), September in Grangemouth brings moderate temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 75 mm (3 in) falls on average.

Rainfall in Grangemouth in September

Typically around 18 days of rainfall are expected, averaging 75 mm (3 in) for the month. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.

Temperature in Grangemouth in September

Daytime highs in Grangemouth in September reach 17°C (63°F), with nights around 10°C (50°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 10°C (50°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Grangemouth in September

The area enjoys a balanced 128 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Wind Speed in Grangemouth in September

In September, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

Average water temperature in September

At 12°C (54°F), the water is too cold for most people to swim comfortably. A wetsuit is pretty much essential if you plan to go in.

If you prefer dry days with pleasant temperatures, July 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.