Latest weather updates and forecast for Bristol.
Temperatures will be mild, with a high of 18 degrees Celsius and a low of 17 degrees Celsius. There is a very low chance of rain, with less than 5% probability. Bristol is set for a day of mixed weather, with cloudy skies this morning giving way to sunny intervals later.
Source: Data referenced in this article is taken from https://www.metoffice.gov.uk
Today, September 18, 2026, Bristol residents can expect a predominantly cloudy start to the day. The maximum temperature is expected to reach 18 degrees Celsius, while the minimum temperature will be around 17 degrees Celsius. Humidity levels are predicted to be high, at 90%, which may make the temperatures feel a little warmer. There is a very low chance of precipitation, with the daily chance of rain being less than 5%. Wind speeds could reach up to 51.5 kph, so some breezy conditions are anticipated. Following today’s cloudy start and mild temperatures, tomorrow, September 19, is expected to see a slight drop in the maximum temperature to 19 degrees Celsius, with a low of 15 degrees Celsius. The weather is then set to become sunnier from September 20 onwards. Sunny intervals are predicted for September 20, 21, 22, 23, and 24. Temperatures are expected to rise steadily through this period, with maximums reaching up to 21 degrees Celsius by September 22, before settling around 19-20 degrees Celsius for the remainder of the week. Minimum temperatures will hover between 14 and 16 degrees Celsius.
The morning will be overcast, but conditions are forecast to improve with sunny intervals developing as the day progresses. The forecast for Bristol indicates a period of generally pleasant weather with a gradual warming trend and a mix of sunny intervals and some rain. There is a chance of light rain on this day.
Humidity levels are not specified for these upcoming days, but the trend suggests a drier and brighter outlook after tomorrow’s potential for light rain.