Bath Weather

Along with the rest of South West England, Bath has a temperate climate which is generally wetter and milder than the rest of the country. The annual mean temperature is approximately 10 °C (50.0 °F). Seasonal temperature variation is less extreme than most of the United Kingdom because of the adjacent sea temperatures. The summer months of July and August are the warmest, with mean daily maxima of approximately 21 °C (69.8 °F). In winter, mean minimum temperatures of 1 or 2 °C (33.8 or 35.6 °F) are common. In the summer the Azores high pressure affects the southwest of England bringing fair weather; however, convective cloud sometimes forms inland, reducing the number of hours of sunshine. Annual sunshine rates are slightly less than the regional average of 1,600 hours.

In December 1998 there were 20 days without sun recorded at Yeovilton. Most of the rainfall in the south-west is caused by Atlantic depressions or by convection. Most of the rainfall in autumn and winter is caused by the Atlantic depressions, which is when they are most active. In summer, a large proportion of the rainfall is caused by sun heating the ground, leading to convection and to showers and thunderstorms. Average rainfall is around 700 mm (28 in). About 8–15 days of snowfall is typical. November to March have the highest mean wind speeds, and June to August have the lightest winds. The predominant wind direction is from the southwest.

Average Temperature
Jan
43 °F
6 °C
Feb
50 °F
10 °C
Mar
52 °F
11 °C
Apr
54 °F
12 °C
May
61 °F
16 °C
Jun
61 °F
16 °C
Jul
70 °F
21 °C
Aug
68 °F
20 °C
Sep
64 °F
18 °C
Oct
55 °F
13 °C
Nov
47 °F
9 °C
Dec
46 °F
8 °C
Humidity
Jan
81%
Feb
82%
Mar
77%
Apr
72%
May
74%
Jun
81%
Jul
75%
Aug
78%
Sep
81%
Oct
83%
Nov
85%
Dec
85%
Rain
Jan
19mm
Feb
29mm
Mar
40mm
Apr
28mm
May
20mm
Jun
145mm
Jul
24mm
Aug
49mm
Sep
75mm
Oct
59mm
Nov
71mm
Dec
51mm
Clouds
Jan
66%
Feb
69%
Mar
73%
Apr
78%
May
67%
Jun
75%
Jul
67%
Aug
62%
Sep
59%
Oct
82%
Nov
85%
Dec
75%
Air quality US AQI
Jan
40
Feb
46
Mar
39
Apr
43
May
48
Jun
41
Jul
39
Aug
40
Sep
39
Oct
38
Nov
39
Dec
35
Sun
Jan
1UVI
Feb
2UVI
Mar
2UVI
Apr
3UVI
May
4UVI
Jun
4UVI
Jul
5UVI
Aug
4UVI
Sep
4UVI
Oct
2UVI
Nov
1UVI
Dec
0UVI