Annual mean 11°C · wettest around December · prevailing wind W
Warmest
21.0 °C
Coldest
5.5 °C
Wettest
39%
Windiest
5.7 m/s
Prevailing
W
4.7 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Swindon over the whole year is 11°C. July is the hottest month, with highs of about 20°C; January is the coldest, with lows of about 4°C. Swindon has no sharply defined rainy season: the chance of rain on a given day runs from 20% in April, the driest month, to 32% in December, the wettest. Winds in Swindon are highest in February, averaging 4.5 m/s (16 km/h), and lightest in July, at 3.5 m/s (13 km/h). The prevailing wind is from the W. The clearest skies in Swindon come in May, when the sky is typically 60% covered; December is the cloudiest month, at 75%.
Month by month Swindon climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
6°C
4°C
1°C
29%
69%
3.9 m/s
0
0
11
February
8°C
4°C
2°C
32%
70%
4.5 m/s
0
0
20
March
9°C
5°C
4°C
28%
68%
4.4 m/s
1
0
30
April
12°C
6°C
7°C
20%
61%
3.9 m/s
9
0
50
May
16°C
9°C
12°C
24%
60%
3.7 m/s
26
0
75
June
19°C
13°C
16°C
21%
60%
3.7 m/s
56
5
78
July
20°C
14°C
18°C
21%
63%
3.5 m/s
73
10
73
August
20°C
14°C
17°C
23%
63%
3.6 m/s
69
7
76
September
18°C
12°C
15°C
22%
63%
3.5 m/s
51
3
80
October
14°C
10°C
10°C
27%
68%
3.8 m/s
12
0
71
November
9°C
6°C
5°C
30%
70%
3.7 m/s
1
0
36
December
7°C
5°C
3°C
32%
75%
3.8 m/s
0
0
21
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Swindon weather by season
Year round, Swindon has days of about 6°C at their warmest in January, its coolest month, and 20°C in July, its warmest; the coolest hours of the day run from 4°C to 14°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around December and least likely around April. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Swindon weather in winterDecember to February
High 7°CLow 4°CRain 31%
Winter in Swindon has typical daily highs of about 7°C and lows of about 4°C, with a 31% chance of rain on a given day.
Swindon weather in springMarch to May
High 12°CLow 6°CRain 24%
Spring in Swindon has typical daily highs of about 12°C and lows of about 6°C, with a 24% chance of rain on a given day.
Swindon weather in summerJune to August
High 20°CLow 14°CRain 22%
Summer in Swindon has typical daily highs of about 20°C and lows of about 14°C, with a 22% chance of rain on a given day.
Swindon weather in autumnSeptember to November
High 14°CLow 9°CRain 26%
Autumn in Swindon has typical daily highs of about 14°C and lows of about 9°C, with a 26% chance of rain on a given day.
When is the rainy season in Swindon?
Swindon has no sharply defined rainy season: the chance of rain on a given day runs from 20% in April, the driest month, to 32% in December, the wettest.
What time of year is Swindon windiest?
Winds in Swindon are highest in February, averaging 4.5 m/s (16 km/h), and lightest in July, at 3.5 m/s (13 km/h). The prevailing wind is from the W.
What is the average temperature in Swindon year round?
The average temperature in Swindon over the whole year is 11°C. July is the hottest month, with highs of about 20°C; January is the coldest, with lows of about 4°C.