September weather forecast and climate
Barnstaple, United Kingdom

Temperature

In Barnstaple, the average high-temperature is 19°C (66.2°F), and the average low-temperature is 11°C (51.8°F).

Humidity

In Barnstaple, the average relative humidity in September is 79%.

Rainfall

In September, in Barnstaple, the rain falls for 11 days. Throughout September, 59mm (2.3") of precipitation is accumulated. In Barnstaple, during the entire year, the rain falls for 138 days and collects up to 862mm (33.9") of precipitation.

Sea temperature

In Barnstaple, the average water temperature is 16.9°C (62.4°F). Swimming in 16.9°C (62.4°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In Barnstaple, the average length of the day in September is 12.6h.

What is the temperature in September in Barnstaple?

The average high-temperature, in September, is 19°C (66.2°F), while the average low-temperature is 11°C (51.8°F).

What is the average humidity in September in Barnstaple?

In Barnstaple, the average relative humidity in September is 79%.

How many days does it rain in September in Barnstaple?

In Barnstaple, in September, during 11 rainfall days, 59mm (2.3") of precipitation is typically accumulated.

How cold is the water in September in Barnstaple?

In Barnstaple, United Kingdom, in September, the average water temperature is 16.9°C (62.4°F). For most, swimming in 16.9°C (62.4°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).

What is the average length of the day in September in Barnstaple?

The average length of the day in September in Barnstaple is 12.6h.
Average temperature in September - Barnstaple, United Kingdom
  • Average high temperature in September: 19°C

The warmest month (with the highest average high temperature) is July (21°C).
Months with the lowest average high temperature are January and December (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 December (4°C).

Average humidity in September - Barnstaple, United Kingdom
  • Average humidity in September: 79%

Months with the highest relative humidity are January, November and December (83%).
The month with the lowest relative humidity is May (76%).

Average rainfall in September - Barnstaple, United Kingdom
  • Average rainfall in September: 59mm

The wettest month (with the highest rainfall) is October (103mm).
The driest month (with the lowest rainfall) is March (53mm).

Average rainfall days in September - Barnstaple, United Kingdom
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is January (15 days).
Months with the lowest number of rainy days are June and July (9 days).

Average sea temperature in September - Barnstaple, United Kingdom
  • Average sea temperature in September: 16.9°C

The best month for swimming (with the highest average sea temperature) is August (17.2°C).
The coldest month (with the lowest average sea temperature) is March (8.3°C).

Average daylight in September - Barnstaple, United Kingdom
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.5h).
The month with shortest days is December (Average daylight: 8h).

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