Greenwich Weather in September

During September, Greenwich experiences high daytime temperatures of 25°C (77°F) and cooler nights around 15°C (59°F). Expect quite a bit of rainfall. Around 100 mm (3.9 in) is typical.

Rainfall in Greenwich in September

Historically, the month has about 10 days of rain, averaging 100 mm (3.9 in) in total. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Greenwich in September

September in Greenwich brings high temperatures, with highs of 25°C (77°F) and nights around 15°C (59°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 15°C (59°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 Greenwich in September

Expect a lot of sunshine this month, with about 218 hours of sun. These sunny conditions add to the overall experience.

Should you favor a climate that's both dry and comfortably warm, July typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.