Annual mean 11°C · wettest around August · prevailing wind SW
Warmest
21.8 °C
Coldest
5.6 °C
Wettest
62%
Windiest
5.8 m/s
Prevailing
SW
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 Thornbury over the whole year is 11°C. July is the hottest month, with highs of about 21°C; February is the coldest, with lows of about 4°C. Thornbury has no sharply defined rainy season: the chance of rain on a given day runs from 29% in July, the driest month, to 44% in August, the wettest. Winds in Thornbury are highest in February, averaging 4.6 m/s (17 km/h), and lightest in November, at 3.3 m/s (12 km/h). The prevailing wind is from the SW. The clearest skies in Thornbury come in May, when the sky is typically 58% covered; December is the cloudiest month, at 71%.
Month by month Thornbury 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
7°C
5°C
2°C
32%
69%
4.0 m/s
0
0
15
February
7°C
4°C
2°C
36%
68%
4.6 m/s
0
0
14
March
9°C
5°C
4°C
44%
69%
4.3 m/s
1
0
29
April
12°C
7°C
8°C
32%
64%
3.9 m/s
8
0
54
May
16°C
10°C
13°C
39%
58%
3.5 m/s
35
0
79
June
19°C
14°C
16°C
34%
61%
3.8 m/s
57
5
77
July
21°C
15°C
19°C
29%
61%
3.7 m/s
75
13
70
August
20°C
14°C
17°C
44%
63%
3.7 m/s
68
5
75
September
18°C
12°C
15°C
40%
62%
3.7 m/s
47
2
79
October
14°C
10°C
11°C
36%
69%
3.8 m/s
17
0
77
November
9°C
6°C
6°C
35%
70%
3.3 m/s
1
0
39
December
8°C
5°C
4°C
35%
71%
3.7 m/s
0
0
25
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 Thornbury weather by season
Year round, Thornbury has days of about 7°C at their warmest in January, its coolest month, and 21°C in July, its warmest; the coolest hours of the day run from 4°C to 15°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around August and least likely around July. 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.
Thornbury weather in winterDecember to February
High 7°CLow 5°CRain 34%
Winter in Thornbury has typical daily highs of about 7°C and lows of about 5°C, with a 34% chance of rain on a given day.
Thornbury weather in springMarch to May
High 12°CLow 7°CRain 38%
Spring in Thornbury has typical daily highs of about 12°C and lows of about 7°C, with a 38% chance of rain on a given day.
Thornbury weather in summerJune to August
High 20°CLow 14°CRain 36%
Summer in Thornbury has typical daily highs of about 20°C and lows of about 14°C, with a 36% chance of rain on a given day.
Thornbury weather in autumnSeptember to November
High 14°CLow 9°CRain 37%
Autumn in Thornbury has typical daily highs of about 14°C and lows of about 9°C, with a 37% chance of rain on a given day.
When is the rainy season in Thornbury?
Thornbury has no sharply defined rainy season: the chance of rain on a given day runs from 29% in July, the driest month, to 44% in August, the wettest.
What time of year is Thornbury windiest?
Winds in Thornbury are highest in February, averaging 4.6 m/s (17 km/h), and lightest in November, at 3.3 m/s (12 km/h). The prevailing wind is from the SW.
What is the average temperature in Thornbury year round?
The average temperature in Thornbury over the whole year is 11°C. July is the hottest month, with highs of about 21°C; February is the coldest, with lows of about 4°C.