September weather forecast and climate
Falmouth, United Kingdom

What is the temperature in September in Falmouth?

In September, in Falmouth, the average high-temperature is 17°C (62.6°F), and the average low-temperature is 11°C (51.8°F).

How many days does it rain in September in Falmouth?

In Falmouth, during September, the rain falls for 15 days and regularly aggregates up to 86mm (3.4") of precipitation.

What is the sea temperature in September in Falmouth?

In Falmouth, in September, the average water temperature is 16.3°C (61.3°F). For most, swimming in 16.3°C (61.3°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Average temperature in September - Falmouth, United Kingdom
  • Average high temperature in September: 17°C

Warmest months (with the highest average high temperature) are July and August (19°C).
Months with the lowest average high temperature are January and February (9°C).

  • Average low temperature in September: 11°C

Months with the highest average low temperature are July and August (13°C).
Coldest months (with the lowest average low temperature) are January, February and March (4°C).

Average rainfall in September - Falmouth, United Kingdom
  • Average rainfall in September: 86mm

Wettest months (with the highest rainfall) are January and December (131mm).
Driest months (with the lowest rainfall) are June and July (60mm).

Average rainfall days in September - Falmouth, United Kingdom
  • Average rainfall days in September: 15 days

The month with the highest number of rainy days is January (22 days).
Months with the lowest number of rainy days are June and July (12 days).

Average sea temperature in September - Falmouth, United Kingdom
  • Average sea temperature in September: 16.3°C

The best month for swimming (with the highest average sea temperature) is August (17.1°C).
The coldest month (with the lowest average sea temperature) is March (9.7°C).

Average daylight in September / Average sunshine in September - Falmouth, United Kingdom
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.3h).
The month with shortest days is December (Average daylight: 8.2h).

  • Average sunshine in September: 5h

Months with most sunshine are May, June and July (Average sunshine: 7h).
Months with least sunshine are January, November and December (Average sunshine: 2).

Average UV index in September - Falmouth, United Kingdom
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 1).

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