Barnstaple
United Kingdom
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Barnstaple, United Kingdom

September, the first month of the autumn, in Barnstaple, is also an enjoyable month, with average temperature varying between 19°C (66.2°F) and 11°C (51.8°F).

Temperature

In Barnstaple, the average high-temperature in September is essentially the same as in August - an enjoyable 19°C (66.2°F). In Barnstaple, the average low-temperature is 11°C (51.8°F).

Humidity

In September, the average relative humidity is 79%.

Rainfall

In Barnstaple, in September, during 11 rainfall days, 59mm (2.3") of precipitation is typically accumulated. Throughout the year, there are 138 rainfall days, and 862mm (33.9") of precipitation is accumulated.

Sea temperature

In Barnstaple, the average seawater temperature is 16.9°C (62.4°F).
Note: 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 September, the average length of the day 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 September, the average relative humidity is 79%.

How many days does it rain in September in Barnstaple?

In Barnstaple, United Kingdom, 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 swimming, a surface water temperature of 16.9°C (62.4°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

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

The average length of the day in September in Barnstaple, United Kingdom, 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).