September weather forecastBournemouth, United Kingdom
September weather for Bournemouth, United Kingdom: September is the month with the warmest seawater in Bournemouth, United Kingdom, with an average sea temperature of 17.3°C (63.1°F). With an average sea temperature of 17.3°C (63.1°F), September is the month with the warmest seawater in Bournemouth.
September
Weather in September
As summer gives way to autumn in Bournemouth, September ushers in cooler weather. From August to September, there is a downward shift in temperatures, shortening day length, and a slight uptick in cloud coverage. On a high note, the average sea temperature lingers at 17.3°C (63.1°F) in September, maintaining the allure of coastal activities. The incoming autumn echo in the air signals the transitioning of seasons, adding a different flavor to Bournemouth's landscape.Temperature
The weather in Bournemouth during September records an average high-temperature of a still enjoyable 17.5°C (63.5°F), closely mirroring the preceding month. Bournemouth, in September, logs an average low-temperature of 12.7°C (54.9°F), a subtle step down from daytime readings.Humidity
April, May, July and September, with an average relative humidity of 81%, are the least humid months in Bournemouth.Rainfall
In Bournemouth, during September, the rain falls for 11.4 days and regularly aggregates up to 21mm (0.83") of precipitation. Throughout the year, in Bournemouth, there are 162.1 rainfall days, and 328mm (12.91") of precipitation is accumulated.Snowfall
In Bournemouth, snow does not fall in March through October.Sea temperature
With an average sea temperature of 17.3°C (63.1°F), September is the month with the warmest seawater in Bournemouth.Note: A majority do not enjoy swimming in water at 17.3°C (63.1°F). The difficulty in controlling breathing increases progressively as the temperature dips below 21°C (69.8°F).
Daylight
The average length of the day in September in Bournemouth, United Kingdom, is 12h and 37min.On the first day of September, sunrise is at 6:22 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:47 pm BST.
Sunshine
In Bournemouth, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index in Bournemouth, United Kingdom, is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. To guard against the harmful effects of the Sun, minimize exposure during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bournemouth, United Kingdom
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is February (7.9°C).
- Average low temperature in September: 12.7°C
The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is February (4.6°C).
Average pressure in September
Bournemouth, United Kingdom
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is September (1017.2mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).
Average wind speed in September
Bournemouth, United Kingdom
- Average wind speed in September: 18.9km/h
The windiest month (with the highest average wind speed) is December (24.3km/h).
The calmest month (with the lowest average wind speed) is July (16.7km/h).
Average humidity in September
Bournemouth, United Kingdom
- Average humidity in September: 81%
The months with the highest relative humidity are January and December (85%).
The months with the lowest relative humidity are April, May, July and September (81%).
Average rainfall in September
Bournemouth, United Kingdom
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is November (46mm).
The driest month (with the least rainfall) is May (17mm).
Average rainfall days in September
Bournemouth, United Kingdom
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is November (17.6 days).
The month with the least rainy days is May (11.3 days).
Average snowfall in September
Bournemouth, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is December (5mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Bournemouth, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 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: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Bournemouth, United Kingdom
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is November (9.1 days).
Average UV index in September
Bournemouth, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in September
Bournemouth, United Kingdom
- Average cloud cover in September: 42
The month with the most cloud cover is November (Cloud cover 58).
The months with the least cloud cover are July and September (Cloud cover 42).
Average visibility in September
Bournemouth, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
