Climate and monthly weather forecastBristol, United Kingdom
Climate and monthly weather forecast
The climate of Bristol
Bristol, a city in the United Kingdom, has a Köppen climate classification of Cfb. This classification, known as marine west coast, with warm summers, represents the predominant climate conditions. Located in the southwestern region of the country, Bristol experiences cool winters and warmer summers with a consistent amount of rainfall throughout the year.Analyzing the climatological parameters reveal an intriguing yearly trend. This city's weather features slight variations across the calendar. On the temperature spectrum, the coldest month is January with a low average of 2.8°C (37°F), gradually rising towards July, the warmest month, with an average high of 20.2°C (68.4°F).
One cannot discount the rainfall in Bristol's weather narrative. Rainfall is practically a constant companion to Bristol's residents, with monthly averages ranging from 12mm (0.47") to 22mm (0.87"). The wettest month is November with 22mm (0.87") of rain.
A notable trend in the climatological data is the relatively stable indices of humidity, with relative humidity fluctuating mildy between 81% and 88%. Pressure stability is equally impressive, shifting marginally from a low of 1013.5mb in February to a high of 1016.8mb in September and October. A unique pattern is the almost negligible snowfall, which only appears in minute quantities during December, January and February.
The best time to visit Bristol
Although Bristol's climate is relatively mild year round, the best time to visit largely depends on tourists' preference for temperature and activities. June to August is typically the favourable travel window for many, due to the warmer temperatures. Average highs range from 18.1°C (64.6°F) to 20.2°C (68.4°F), and these months also witness the longest daylight hours, boasting around 16 hours. With moderate averange rainfall, tourists can explore the city without frequent interruptions from downpours.The worst time to visit Bristol
People who do not appreciate colder temperatures may find December to February less welcoming. Temperatures drop to a low average of 2.8°C (37°F) in January and February. Rainfall is relatively high during these months and snowfall, albeit minor, adds to the chill in the air.Spring weather in Bristol
March signals the onset of spring in Bristol, a season characterized by mild temperatures and a fair amount of rainfall. Average high temperatures range from 10°C (50°F) in March to 15.5°C (59.9°F) in May. Rainfall averages 12mm (0.47") to 13mm (0.51") in these months, while wind speed slows down to around 14.2km/h (8.8mph) by May.Summer weather in Bristol
Bristol heralds summer from June and it extends to August. Temperatures hit their peak in July, with an average high of 20.2°C (68.4°F) and comparatively lower humidity levels. Only interrupted occasionally by waves of rainfall, averaging from 14mm (0.55") to 19mm (0.75"), the sun shines for about 15 to 16 hours daily, providing a lovely atmosphere for outdoor activities.Autumn weather in Bristol
Autumn in Bristol begins in September and winds up in November. This season is marked by cooling temperatures, descending from a high of 17.7°C (63.9°F) in September to a much cooler 10.3°C (50.5°F) in November. Rainfall levels fluctuate between 12mm (0.47") and 22mm (0.87"), with November being the month with the highest rainfall count.Winter weather in Bristol
Commencing in December, Bristol's winter season brings colder temperatures and a fair share of rain and snow. While the average highs stay in a range of 8.1°C (46.6°F) to 7.2°C (45°F) for December and January, the average lows dip to 4.1°C (39.4°F) in December and 2.8°C (37°F) in January. Rainfall is relatively consistent, averaging 20mm (0.79") in December and a slightly lower 12mm (0.47") in February. Snowfall also makes a brief appearance within this season.Weather in January
Bristol in January is typically characterised by moderate cold and frequent precipitation. The average high of January, with 7.2°C (45°F), indicates the one of the coldest months of the year. Occasional snow also adds to the wintery mood with 3mm (0.12") of snow falling generally once during the month. Weather in January »Weather in February
Amid the end of winter, February exhibits a slight increase in temperature. Compared to January, February in Bristol exhibits slightly more rain with average precipitation of 16mm (0.63") and increased snowfall of 4mm (0.16"). Weather in February »Weather in March
From February to March, Bristol sees a gentle surge in temperature, inviting the onset of spring. Notably, snow virtually vanishes with a paltry amount of 1mm (0.04"), signifying the end of winter. Generally, weather remains cloudy, but an increase in sunshine and daylight hours is noticeable. Weather in March »Weather in April
In April, clement weather prevails as temperatures rise further, embracing spring in Bristol fully. With negligible snowfall, Bristol residents warmly welcome the first snowless month of the year. Increased daylight hours of 13.9 hours subtly hint at the approaching summer. Weather in April »Weather in May
May brings forth a significant rise in temperature, making Bristol delightfully warm. By this time, sunlight hours increase to 15.6 hours daily, further brightening the city. Frequent rain showers with an average rainfall of 13mm (0.51") do not dampen the arrival of summer. Weather in May »Weather in June
June represents a steady climb in temperature, further warming Bristol. Sights of sun become a daily routine with up to 16.5 daylight hours. Compared to May, June suffers a substantial increase in average rainfall reaching 19mm (0.75"). Weather in June »Weather in July
July marks the zenith of summer in Bristol with the year's highest temperature at 20.2°C (68.4°F). Despite this, July surprisingly witnesses increased rainfall, reaching an average of 14mm (0.55") of rain. The extravagant sunlight remains almost stagnant at 16.1 hours/day, ensuring bright and sunny days. Weather in July »Weather in August
August continues the summer trend with significantly high temperatures. Parallel to July, August also sees a rise in rainfall amounting to 19mm (0.75"). Sunshine duration dwindles a bit, signalling the impending arrival of autumn. Weather in August »Weather in September
From August to September, Bristol experiences a noticeable drop in temperature. September offers more wind, thereby increasing the wind speed to 13.9km/h (8.6mph). Slightly reduced daylight hours of 12.6 hours daily and a decrease in average rainfall to 12mm (0.47") indicates the onset of autumn. Weather in September »Weather in October
October progressively cools down Bristol, marking autumn's peak. Rainfall surprisingly intensifies compared with September, hitting an average of 16mm (0.63"). The wind speed increments, increasing its pace to 15.6km/h (9.7mph). Concurrently, sunshine hours and daylight significantly decrease. Weather in October »Weather in November
November presents the largest precipitation of the year with an average rainfall measure of 22mm (0.87"). Compared to October, November experiences shadowy, cloudy days with 63% cloud cover. A decrease in temperature is felt throughout Bristol. Weather in November »Weather in December
December showcases traditional winter weather with a fall in temperature and increased precipitation. With snowfall of 1mm (0.04") reinstating, December is undeniably a wintry month in Bristol. Interestingly, wind speed rises to its maximum value of 18.3km/h (11.4mph) for the year. Weather in December »Updated: Feb 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Bristol notes the coldest temperatures in January, with a average high of 7.2°C (45°F) and a low of 2.8°C (37°F).
The months with the highest humidity are January, November and December, with an average relative humidity of 88%.
January, April and September are months with the least rain when the rain falls for 10.3 days and typically aggregates up to 12mm (0.47") of rain.
In Bristol, during the entire year, the rain falls for 123.4 days and collects up to 188mm (7.4") of precipitation.
Months with snowfall in Bristol, United Kingdom, are January through March and December.
Throughout the year, there are 5.3 snowfall days, and 9mm (0.35") of snow is accumulated.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Bristol.
February is the month with the most snowfall in Bristol, United Kingdom. Snow falls for 2.5 days and accumulates 4mm (0.16") of snow.
February and November, with an average of 3.8h of sunshine, are months with the least sunshine in Bristol.
In Bristol, snow does not fall in April through November.
May through September, with an average maximum UV index of 4, are months with the highest UV index.
The month with the longest days is June, with an average of 16h and 30min of daylight.
Bristol, United Kingdom, witnesses the warmest weather in July, with temperatures averaging a high of 20.2°C (68.4°F) and a low of 12.4°C (54.3°F).
July is the least humid month in Bristol, with an average relative humidity of 81%.
With an average of 7.8h of sunshine, July has the most sunshine of the year in Bristol, United Kingdom.
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Bristol, and the time zone changes from BST to GMT. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 1:00 am, and the time zone reverts from GMT to BST.
The month with the most rainfall in Bristol, United Kingdom, is November, when the rain falls for 11.1 days and typically aggregates up to 22mm (0.87") of precipitation.
The month with the shortest days in Bristol is December, with an average of 7h and 54min of daylight.
Average temperature
Bristol, United Kingdom
The warmest month (with the highest average high temperature) is July (20.2°C).
The month with the lowest average high temperature is January (7.2°C).
The month with the highest average low temperature is August (12.7°C).
The coldest months (with the lowest average low temperature) are January and February (2.8°C).
Average pressure
Bristol, United Kingdom
- Average pressure in January:
1014.1mbar - Average pressure in February:
1013.5mbar - Average pressure in March:
1015.3mbar - Average pressure in April:
1015.4mbar - Average pressure in May:
1016.7mbar - Average pressure in June:
1016mbar
- Average pressure in July:
1015.2mbar - Average pressure in August:
1014.7mbar - Average pressure in September:
1016.8mbar - Average pressure in October:
1014.7mbar - Average pressure in November:
1010.1mbar - Average pressure in December:
1014.1mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010.1mbar).
Average wind speed
Bristol, United Kingdom
- Average wind speed in January:
18.1km/h - Average wind speed in February:
19km/h - Average wind speed in March:
17.1km/h - Average wind speed in April:
14.2km/h - Average wind speed in May:
14km/h - Average wind speed in June:
13.5km/h
- Average wind speed in July:
13.4km/h - Average wind speed in August:
13.9km/h - Average wind speed in September:
13.9km/h - Average wind speed in October:
15.6km/h - Average wind speed in November:
17.2km/h - Average wind speed in December:
18.3km/h
The windiest month (with the highest average wind speed) is February (19km/h).
The calmest month (with the lowest average wind speed) is July (13.4km/h).
Average humidity
Bristol, United Kingdom
The months with the highest relative humidity are January, November and December (88%).
The month with the lowest relative humidity is July (81%).
Average rainfall
Bristol, United Kingdom
The wettest month (with the highest rainfall) is November (22mm).
The driest months (with the least rainfall) are January, April and September (12mm).
Average rainfall days
Bristol, United Kingdom
- Average rainfall days in January:
10.3 days - Average rainfall days in February:
8.6 days - Average rainfall days in March:
10 days - Average rainfall days in April:
11.3 days - Average rainfall days in May:
10.3 days - Average rainfall days in June:
10.9 days
- Average rainfall days in July:
12.1 days - Average rainfall days in August:
12.1 days - Average rainfall days in September:
9 days - Average rainfall days in October:
8.2 days - Average rainfall days in November:
11.1 days - Average rainfall days in December:
9.5 days
The months with the highest number of rainy days are July and August (12.1 days).
The month with the least rainy days is October (8.2 days).
Average snowfall
Bristol, United Kingdom
The month with the highest snowfall is February (4mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Bristol, United Kingdom
- Average snowfall days in January:
1 days - Average snowfall days in February:
2.5 days - Average snowfall days in March:
0.8 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
0.7 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Bristol, United Kingdom
- Average daylight in January:
8h and 30min - Average daylight in February:
10h and 0min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 54min - Average daylight in May:
15h and 36min - Average daylight in June:
16h and 30min
- Average daylight in July:
16h and 6min - Average daylight in August:
14h and 30min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 42min - Average daylight in November:
8h and 54min - Average daylight in December:
7h and 54min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 36min - Average sunshine in April:
7h and 24min - Average sunshine in May:
7h and 30min - Average sunshine in June:
7h and 18min
- Average sunshine in July:
7h and 48min - Average sunshine in August:
7h and 6min - Average sunshine in September:
6h and 54min - Average sunshine in October:
4h and 18min - Average sunshine in November:
3h and 48min - Average sunshine in December:
4h and 0min
The month with the most sunshine is July (Average sunshine: 7h and 48min).
The months with the least sunshine are February and November (Average sunshine: 3h and 48min).
Average sunshine days
Bristol, United Kingdom
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
18 days - Average sunshine days in April:
15.6 days - Average sunshine days in May:
15 days - Average sunshine days in June:
14 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
14 days - Average sunshine days in September:
18 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
16.3 days - Average sunshine days in December:
18.4 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (13.7 days).
Average UV index
Bristol, United Kingdom
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Bristol, United Kingdom
The month with the most cloud cover is November (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 51).
Average visibility
Bristol, United Kingdom
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
