Bournemouth
United Kingdom
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Bournemouth, United Kingdom

The first month of the autumn, September, is still a comfortable month in Bournemouth, United Kingdom, with average temperature ranging between min 9.4°C (48.9°F) and max 19.3°C (66.7°F).

Temperature

In Bournemouth, the average high-temperature in September is almost the same as in August - a comfortable 19.3°C (66.7°F). The average low-temperature, in Bournemouth, is 9.4°C (48.9°F).

Rainfall

In September, the rain falls for 9 days. Throughout September, 65.3mm (2.6") of precipitation is accumulated. Throughout the year, there are 120.4 rainfall days, and 835.2mm (32.9") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 17.3°C (63.1°F), September is the month with the warmest seawater.
Note: For most, swimming in 17.3°C (63.1°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).

Daylight

The average length of the day in September is 12.6h.

Sunshine

The average sunshine in Bournemouth is 5.3h.

UV index

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Bournemouth?

In September, in Bournemouth, the average high-temperature is 19.3°C (66.7°F), and the average low-temperature is 9.4°C (48.9°F).

How much does it rain in Bournemouth in September?

In Bournemouth, United Kingdom, in September, it is raining for 9 days, with typically 65.3mm (2.6") of accumulated precipitation.

When is the sea warmest in Bournemouth?

The month with the warmest seawater in Bournemouth, United Kingdom, is September, with an average sea temperature of 17.3°C (63.1°F).

How cold is the water in September in Bournemouth?

In September, the average sea temperature is 17.3°C (63.1°F). Swimming in 17.3°C (63.1°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Bournemouth have in September?

The average length of the day in September in Bournemouth is 12.6h.

How long on average sun shines in September in Bournemouth?

In Bournemouth, United Kingdom, the average sunshine in September is 5.3h.

How high is the UV index in September in Bournemouth?

In September, the average daily maximum UV index in Bournemouth, United Kingdom, is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.
Average temperature in September - Bournemouth, United Kingdom
  • Average high temperature in September: 19.3°C

The warmest month (with the highest average high temperature) is July (22.1°C).
The month with the lowest average high temperature is January (8.4°C).

  • Average low temperature in September: 9.4°C

The month with the highest average low temperature is July (11.9°C).
The coldest month (with the lowest average low temperature) is February (1.2°C).

Average rainfall in September - Bournemouth, United Kingdom
  • Average rainfall in September: 65.3mm

The wettest month (with the highest rainfall) is October (100.7mm).
The driest month (with the lowest rainfall) is July (47.8mm).

Average rainfall days in September - Bournemouth, United Kingdom
  • Average rainfall days in September: 9 days

The month with the highest number of rainy days is January (12.8 days).
The month with the lowest number of rainy days is August (7.3 days).

Average sea temperature in September - Bournemouth, United Kingdom
  • Average sea temperature in September: 17.3°C

The best month for swimming (with the highest average sea temperature) is September (17.3°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).

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

The month with the longest days is June (Average daylight: 16.4h).
The month with shortest days is December (Average daylight: 8.1h).

  • Average sunshine in September: 5.3h

The month with most sunshine is June (Average sunshine: 7.7h).
The month with least sunshine is December (Average sunshine: 1.9h).

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

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 1).