Climate and monthly weather forecastSwindon, United Kingdom
Swindon, United Kingdom - Climate and weather forecast by month. Detailed climate information with charts - average monthly weather with temperature, pressure, humidity, precipitation, wind, daylight, sunshine, visibility, and UV index data. The month with the least rainfall in Swindon, United Kingdom, is September, when the rain falls for 12 days and typically collects 22mm (0.87") of precipitation. The month with the most snowfall in Swindon is February, when snow falls for 3.7 days and typically aggregates up to 20mm (0.79") of snow.
Climate and monthly weather forecast
The climate of Swindon
Swindon's overall climate falls under the Köppen climate classification Cfb, known as Marine west coast with a warm summer. Positioned in the United Kingdom, the town experiences cool to mild conditions throughout the year. Temperatures consistently register in the moderate range with the highest average peak at 20.5°C (68.9°F) in July and descending to a cooler average low extremes of 1.4°C (34.5°F) in January.The year also presents a fairly high level of relative humidity, remaining well above 80% for every month. Rainfall is another constant feature of Swindon's climate, with month-to-month precipitation showing a relatively small range from a low of 22mm (0.87") in September to a maximum of 39mm (1.54") in June. Rainfall days also closely track total precipitation with the highest number recorded in July with 18.7 days and the least in February with 10.8 days.
Unique to Swindon is the town's experience with snowfall which is largely restricted to early part of the year. January records the heaviest snowfall of 14mm (0.55") over 2.6 days, after which snowfall drops off sharply to just 6mm (0.24") in March with a mere 1.2 snowfall days. Beyond March, the snowfall drops to nil, reaffirming zero snowfall days before rebounding in November with 4mm (0.16") over 0.5 day and rising to 9mm (0.35") in December over 1.6 days. The daylight hours display a marked seasonal trend with nearly double the amount of daylight in June compared to December, 16.6 hours versus 7.9 hours respectively.
The best time to visit Swindon
The best time to visit Swindon depends largely on visitor preference and the type of activities one seeks to enjoy. However, when considering both temperature and precipitation, the late spring to early summer months of May to July offers ideal weather. During this period, temperatures range from 15.4°C (59.7°F) to 20.5°C (68.9°F), while rainfall remains fairly constant around the 30-34mm (-1.34") mark.The worst time to visit Swindon
Visitors looking for warm weather and minimal rain would find the period from November to February less appealing. Below-average temperatures register between 1.4°C (34.5°F) to 6.9°C (44.4°F), with an uptick in rainfall, especially in December at 38mm (1.5"). Combined with reduced daylight hours, this time of year may not be favorable for outdoor activities.Spring weather in Swindon
Spring in Swindon sees a gradual rise in temperature from 9.9ºC in March, to 12.8ºC and 15.4ºC in April and May respectively. Meanwhile, the corresponding low temperatures for these months are 2.5ºC, 4ºC, and 6.4ºC. Rainfall remains consistent, fluctuating between 23mm (0.91") - 31mm (1.22"), with 12.6 to16 rain days per month on average. The increase in daylight hours from 11.9 hours in March to 15.6 hours in May, coupled with an increase to 7 hours of daily sunshine by May, makes for pleasant spring weather.Summer weather in Swindon
Swindon's summer, encompassing June, July, and August, offers warm temperatures ranging between 18.1°C (64.6°F) to 20.5°C (68.9°F), with lows ranging from 9.3°C (48.7°F) to 12°C (53.6°F). Rainfall increases in this period, peaking at 39mm (1.54") in June, while the number of rain days also heightens to a yearly maximum of 18.7 days in July. Sunshine hours remain steady at approximately 7 hours per day, alike the daylight hours which plateau at just over 16 hours.Autumn weather in Swindon
Autumn reveals a decline in temperature from a high of 17.7ºC in September to 9.5ºC by November with concurrent low temperatures dropping from 9.8ºC to 4.9ºC. Rainfall characterizes autumn weather starting from 22mm (0.87") in September and gradually increasing to 35mm (1.38") in November with an associated increase in rain days from 12 to 13 over the same period.Winter weather in Swindon
Winter temperatures in Swindon oscillate from a high of 7.2ºC in December to a low of 6.3ºC in January and back to a high of 6.9ºC in February. The analogous low temperatures for these months are 2.7ºC, 1.4ºC, and 1.7ºC respectively. Rainfall is highest in December at 38mm (1.5") with the number of rain days peaking to 11.7 for the same month. The daylight hours are at their lowest during December at 7.9 hours, increasing steadily to 10 hours by February. Winter in Swindon also implies the return of snow with January recording the highest snowfall of 14mm (0.55") over 2.6 days.Weather in January
January ushers the start of the year in Swindon with relatively low temperatures, at a high of 6.3°C (43.3°F) and a low of 1.4°C (34.5°F). The bitter chill brings abundant humidity, with a relative rate of 90%. While the short daylight hours urge locals to stay indoors, the month is also characterized by a substantial amount of cloud cover. Weather in January »Weather in February
In Swindon, weather in February experiences gradual warming from the preceding month, but temperatures remain decidedly low. Snowfall is frequent due to the prevailing cold conditions. A relative humidity of 88% can bring about foggy mornings, making the sight of the rare sun a welcome one. Weather in February »Weather in March
March paves the way for warmer weather in Swindon, albeit slowly. The duration of daylight hours begins to extend, hinting at the arrival of the awaited spring. However, icy conditions can still be expected, as evidenced by the minimal snowfall of 6mm (0.24"). Weather in March »Weather in April
Come April, Swindon transitions from winter to the mild conditions of spring. Snowfall ceases entirely, signaling the advent of more favorable weather. Longer daylight hours invite outdoor activities, while the rising pressure produces tranquil weather conditions. Weather in April »Weather in May
Weather in May is characterized by increased warmth in Swindon, pointing towards the full bloom of spring. Rainfall becomes frequent, nurturing the lush verdant spaces within the city. A little more sunshine is seen compared to the previous months, and with fewer clouds in the sky, visibility is generally higher. Weather in May »Weather in June
June signals the onset of summer in Swindon, and with the arrival of this season, the city's weather exhibits distinctly milder characteristics. Daylight hours reach their peak, offering ample opportunity for a multitude of outdoor pursuits. Weather in June »Weather in July
July holds the title as the warmest month in Swindon, with average temperatures soaring to a high of 20.5°C (68.9°F). The city also benefits from the longest hours of daylight, despite the persistent prevalence of clouds. Additionally, a decrease in wind speed from the preceding months ensures milder breezes and overall more serene climatic conditions. July, with its high-temperature average of 20.5°C (68.9°F) and a low-temperature average of 11.8°C (53.2°F), is the warmest month. Weather in July »Weather in August
In contrast to July, August in Swindon experiences a small dip in average temperature. Additionally, an increase in rainfall characterizes this month. However, despite these characteristics, August still embodies the essence of summer, boasting extended daylight hours and plentiful sunshine. As Swindon transitions from July to August, the average high-temperatures adjust to a comfortable 19.8°C (67.6°F), nearly the same as the previous 20.5°C (68.9°F). Weather in August »Weather in September
September in Swindon ushers in the fall season, with declining temperatures and shorter days. The close of summer is evident from the somewhat lower pressure levels. Owing to the decreased temperature, the relative humidity also takes a dip. Weather in September »Weather in October
October brings a pronounced autumn chill to Swindon, with decreased daylight hours and falling temperatures. The month's wind speeds amplify this effect, making the overall climate noticeably cooler. Cloud cover increases extensively, with an average of 60% cloudiness, coupled with more frequent rain showers. The beginning of October in Swindon, United Kingdom, brings a slight decrease in the average high-temperature, transitioning from a comfortable 17.7°C (63.9°F) in September to a still refreshing 13.9°C (57°F). Weather in October »Weather in November
Swindon in November is dominated by lower temperatures, increased rainfall, and higher relative humidity levels. The first traces of snow can be detected, suggesting the return of winter. Foremost among November's climatic highlights is the first snowfall of 4mm (0.16"), signaling the onset of the frosty season. In November, the average high-temperature marginally drops from a refreshing 13.9°C (57°F) in October to a frosty 9.5°C (49.1°F). Weather in November »Weather in December
December, the final month of the year in Swindon, is characterized by wintry conditions, with low temperatures and increased snowfall. The decline in temperature from November is marked, signalling the full swing of winter. Longer nights prevail, and the decrease in daylight hours characterizes the arrival of the winter solstice. 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
Swindon's temperature records reveal January as the coldest month, marked by average highs of 6.3°C (43.3°F) and lows of 1.4°C (34.5°F).
In Swindon, during the entire year, the rain falls for 165.8 days and collects up to 376mm (14.8") of precipitation.
Months with snowfall are January through March, November and December.
Throughout the year, in Swindon, United Kingdom, there are 9.9 snowfall days, and 53mm (2.09") 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 Swindon.
The month with the most snowfall in Swindon is February, when snow falls for 3.7 days and typically aggregates up to 20mm (0.79") of snow.
February and November, with an average of 3.6h of sunshine, are months with the least sunshine in Swindon.
April through October are months without snowfall in Swindon, United Kingdom.
The months with the highest UV index in Swindon are May through August, with an average maximum UV index of 4.
June is the month with the most rainfall. Rain falls for 16.6 days and accumulates 39mm (1.54") of precipitation.
With an average of 16h and 36min of daylight, June has the longest days of the year.
Swindon's warmest weather arrives in July, when temperatures average a high of 20.5°C (68.9°F) and a low of 11.8°C (53.2°F).
The months with the lowest humidity in Swindon are July and August, with an average relative humidity of 81%.
The month with the most sunshine is July, with an average of 7.4h of sunshine.
The month with the least rainfall in Swindon, United Kingdom, is September, when the rain falls for 12 days and typically collects 22mm (0.87") of precipitation.
On Sunday, 27. October 2024, at 2:00 am, Daylight Saving Time ends in Swindon, 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.
With an average relative humidity of 91%, December is the most humid month in Swindon.
December has the shortest days of the year, with an average of 7h and 54min of daylight.
Average temperature
Swindon, United Kingdom
The warmest month (with the highest average high temperature) is July (20.5°C).
The month with the lowest average high temperature is January (6.3°C).
The month with the highest average low temperature is August (12°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure
Swindon, United Kingdom
- Average pressure in January:
1014.3mbar - Average pressure in February:
1013.6mbar - Average pressure in March:
1015.4mbar - Average pressure in April:
1015.5mbar - 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:
1014.9mbar - Average pressure in November:
1010.2mbar - Average pressure in December:
1014.2mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010.2mbar).
Average wind speed
Swindon, United Kingdom
- Average wind speed in January:
17.5km/h - Average wind speed in February:
18.4km/h - Average wind speed in March:
16.8km/h - Average wind speed in April:
14km/h - Average wind speed in May:
13.6km/h - Average wind speed in June:
13.3km/h
- Average wind speed in July:
13.1km/h - Average wind speed in August:
13.5km/h - Average wind speed in September:
13.3km/h - Average wind speed in October:
15.3km/h - Average wind speed in November:
16.6km/h - Average wind speed in December:
18km/h
The windiest month (with the highest average wind speed) is February (18.4km/h).
The calmest month (with the lowest average wind speed) is July (13.1km/h).
Average humidity
Swindon, United Kingdom
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are July and August (81%).
Average rainfall
Swindon, United Kingdom
The wettest month (with the highest rainfall) is June (39mm).
The driest month (with the least rainfall) is September (22mm).
Average rainfall days
Swindon, United Kingdom
- Average rainfall days in January:
11.3 days - Average rainfall days in February:
10.8 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
16 days - Average rainfall days in June:
16.6 days
- Average rainfall days in July:
18.7 days - Average rainfall days in August:
16.6 days - Average rainfall days in September:
12 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
13 days - Average rainfall days in December:
11.7 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (10.8 days).
Average snowfall
Swindon, United Kingdom
The month with the highest snowfall is February (20mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days
Swindon, United Kingdom
- Average snowfall days in January:
2.6 days - Average snowfall days in February:
3.7 days - Average snowfall days in March:
1.2 days - Average snowfall days in April:
0.3 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:
0.5 days - Average snowfall days in December:
1.6 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Swindon, United Kingdom
- Average daylight in January:
8h and 24min - 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 36min
- Average daylight in July:
16h and 6min - Average daylight in August:
14h and 36min - 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 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in January:
3h and 54min - Average sunshine in February:
3h and 36min - Average sunshine in March:
5h and 18min - Average sunshine in April:
7h and 0min - Average sunshine in May:
6h and 54min - Average sunshine in June:
6h and 54min
- Average sunshine in July:
7h and 24min - Average sunshine in August:
6h and 54min - Average sunshine in September:
6h and 42min - Average sunshine in October:
4h and 18min - Average sunshine in November:
3h and 36min - Average sunshine in December:
3h and 54min
The month with the most sunshine is July (Average sunshine: 7h and 24min).
The months with the least sunshine are February and November (Average sunshine: 3h and 36min).
Average sunshine days
Swindon, United Kingdom
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
12.2 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
9.6 days
- Average sunshine days in July:
8.6 days - Average sunshine days in August:
10.6 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
15.7 days - Average sunshine days in November:
13.9 days - Average sunshine days in December:
16.2 days
The month with the most sunshine days is December (16.2 days).
The month with the least sunshine days is July (8.6 days).
Average UV index
Swindon, United Kingdom
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Swindon, United Kingdom
The month with the most cloud cover is November (Cloud cover 66).
The month with the least cloud cover is April (Cloud cover 53).
Average visibility
Swindon, United Kingdom
The months with the highest visibility are February, March and July (9km).
The months with the lowest visibility are January, April, May, June, August, September, October, November and December (8km).
