Isleworth Weather in December

December in Isleworth averages 9°C (48°F) during the day and 3°C (37°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 Isleworth in December

Typically, about 15 days will experience rainfall, with an average of 63 mm (2.5 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.

Temperature in Isleworth in December

December in Isleworth brings typical temperatures with highs around 9°C (48°F) and lows of 3°C (37°F). The month of December belongs to the winter season. Expect a cold feel throughout the day, not just in the mornings and evenings. Warm layers are essential. With overnight lows of 3°C (37°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Isleworth in December

The city usually sees around 54 hours of sunlight, indicating fewer sunny days.

Wind Speed in Isleworth in December

In December, 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.

December in Isleworth can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.