St Agnes (Cornwall) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 15° Celsius;
Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius; -
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 15° Celsius;
Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius; -
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius; -
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 16° Celsius;
Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius;
-
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 15° Celsius;
Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 15 degrees Celsius; -
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 17° Celsius;
Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius;
-
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 16° Celsius;
Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius;
Heavy showers changing to overcast by lunchtime.
Sunrise:
Sunset:
Next low tide: for
Porthtowan (Beach)
7 day forecast for St Agnes
Today (29 August 2026)
| Time |
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
 |
|
 |
 |
|
|
|
 |
|
|
 |
|
|
|
| Chance of precipitation |
≥95%
|
80%
|
50%
|
50%
|
50%
|
40%
|
40%
|
30%
|
20%
|
20%
|
20%
|
30%
|
30%
|
20%
|
20%
|
| Temperature |
18°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
18°
|
18°
|
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
| Feels like temperature (°C) |
15°
|
16°
|
16°
|
17°
|
16°
|
15°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
| Wind direction and speed |
SSW
15
|
SSW
15
|
SW
16
|
WSW
16
|
W
18
|
W
22
|
W
23
|
W
23
|
W
22
|
W
21
|
W
19
|
W
18
|
W
17
|
W
16
|
W
14
|
| Wind gust (mph) |
33
|
33
|
32
|
33
|
43
|
44
|
43
|
41
|
36
|
34
|
32
|
29
|
26
|
25
|
23
|
| Visibility |
M
|
M
|
M
|
G
|
M
|
M
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
| Humidity |
92%
|
92%
|
90%
|
88%
|
86%
|
86%
|
85%
|
84%
|
84%
|
84%
|
84%
|
84%
|
85%
|
85%
|
85%
|
| UV | 1 | 2 | 4 | 5 | 5 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | - | - | - |
Sunday (30 August 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
|
|
| Chance of precipitation |
10%
|
30%
|
60%
|
60%
|
50%
|
40%
|
30%
|
30%
|
30%
|
30%
|
40%
|
60%
|
80%
|
90%
|
60%
|
50%
|
60%
|
70%
|
80%
|
90%
|
90%
|
70%
|
70%
|
70%
|
| Temperature (°C) |
16°
|
16°
|
16°
|
16°
|
16°
|
15°
|
15°
|
15°
|
16°
|
17°
|
18°
|
19°
|
19°
|
19°
|
18°
|
19°
|
19°
|
18°
|
18°
|
17°
|
16°
|
15°
|
16°
|
16°
|
| Feels like temperature (°C) |
14°
|
14°
|
15°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
16°
|
16°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
14°
|
13°
|
13°
|
12°
|
13°
|
| Wind direction and speed (mph) |
WSW
13
|
WSW
11
|
SW
10
|
SW
9
|
SW
9
|
SW
9
|
SSW
9
|
SSW
9
|
SSW
11
|
SSW
13
|
SSW
16
|
SSW
16
|
SSW
17
|
SSW
17
|
SSW
17
|
SW
17
|
SW
17
|
SW
17
|
SW
17
|
SW
17
|
SW
16
|
SW
16
|
WSW
18
|
W
17
|
| Wind gust (mph) |
21
|
20
|
19
|
20
|
21
|
20
|
20
|
21
|
24
|
26
|
29
|
32
|
34
|
33
|
33
|
33
|
33
|
33
|
34
|
34
|
34
|
32
|
32
|
33
|
| Visibility (description) |
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
VG
|
G
|
VG
|
G
|
G
|
G
|
G
|
G
|
| Humidity |
86%
|
87%
|
89%
|
90%
|
91%
|
90%
|
90%
|
90%
|
86%
|
83%
|
76%
|
74%
|
76%
|
81%
|
83%
|
76%
|
73%
|
74%
|
74%
|
80%
|
86%
|
87%
|
85%
|
83%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 5 | 5 | 5 | 2 | 4 | 3 | 2 | 1 | 1 | 1 | - | - | - |
Monday (31 August 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
| Chance of precipitation |
50%
|
60%
|
60%
|
60%
|
50%
|
50%
|
50%
|
30%
|
20%
|
20%
|
30%
|
30%
|
20%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
15°
|
15°
|
16°
|
16°
|
17°
|
17°
|
18°
|
18°
|
18°
|
18°
|
18°
|
18°
|
17°
|
17°
|
16°
|
16°
|
15°
|
15°
|
| Feels like temperature (°C) |
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
13°
|
13°
|
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
16°
|
15°
|
15°
|
15°
|
14°
|
14°
|
14°
|
14°
|
| Wind direction and speed (mph) |
W
18
|
W
18
|
W
18
|
W
18
|
WNW
18
|
WNW
18
|
WNW
17
|
WNW
16
|
WNW
17
|
WNW
16
|
WNW
16
|
WNW
15
|
WNW
16
|
WNW
15
|
WNW
14
|
WNW
13
|
WNW
11
|
W
11
|
W
11
|
W
11
|
W
10
|
WSW
9
|
SW
9
|
SW
8
|
| Wind gust (mph) |
32
|
31
|
31
|
31
|
31
|
30
|
30
|
27
|
27
|
27
|
26
|
26
|
25
|
25
|
23
|
22
|
22
|
21
|
19
|
17
|
17
|
16
|
16
|
15
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
81%
|
78%
|
80%
|
81%
|
82%
|
81%
|
81%
|
78%
|
76%
|
72%
|
68%
|
66%
|
65%
|
63%
|
63%
|
63%
|
65%
|
64%
|
65%
|
67%
|
73%
|
75%
|
78%
|
81%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 4 | 6 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | - | - | - |
Tuesday (1 September 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
20%
|
20%
|
20%
|
30%
|
30%
|
20%
|
20%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
30%
|
40%
|
40%
|
| Temperature (°C) |
15°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
16°
|
16°
|
17°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
16°
|
| Feels like temperature (°C) |
14°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
14°
|
15°
|
16°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
16°
|
16°
|
16°
|
16°
|
15°
|
16°
|
15°
|
| Wind direction and speed (mph) |
SW
8
|
SSW
8
|
SSW
8
|
SSW
8
|
SSW
8
|
SSW
8
|
S
9
|
SSW
9
|
SSW
9
|
SSW
10
|
SW
11
|
SW
11
|
WSW
11
|
WSW
11
|
WSW
13
|
WSW
13
|
SW
13
|
SW
13
|
SW
11
|
SW
11
|
SSW
10
|
SSW
10
|
SSW
10
|
SSW
10
|
| Wind gust (mph) |
15
|
15
|
16
|
16
|
17
|
16
|
16
|
17
|
18
|
19
|
20
|
21
|
21
|
21
|
21
|
22
|
21
|
20
|
19
|
18
|
17
|
19
|
19
|
20
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
M
|
M
|
M
|
| Humidity |
83%
|
83%
|
84%
|
85%
|
86%
|
86%
|
86%
|
87%
|
83%
|
80%
|
74%
|
73%
|
71%
|
70%
|
68%
|
70%
|
72%
|
74%
|
76%
|
80%
|
84%
|
88%
|
89%
|
91%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 4 | 3 | 1 | 1 | 1 | 1 | - | - | - |
Wednesday (2 September 2026)
| Time |
00:00
|
01:00
|
02:00
|
03:00
|
04:00
|
05:00
|
06:00
|
07:00
|
08:00
|
09:00
|
10:00
|
11:00
|
12:00
|
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
40%
|
40%
|
40%
|
40%
|
50%
|
60%
|
60%
|
50%
|
50%
|
50%
|
50%
|
40%
|
40%
|
30%
|
30%
|
30%
|
20%
|
20%
|
20%
|
20%
|
20%
|
10%
|
20%
|
10%
|
| Temperature (°C) |
17°
|
16°
|
16°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
| Feels like temperature (°C) |
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
16°
|
17°
|
17°
|
17°
|
17°
|
16°
|
16°
|
16°
|
16°
|
16°
|
15°
|
15°
|
15°
|
15°
|
| Wind direction and speed (mph) |
SSW
10
|
SSW
11
|
SSW
11
|
SSW
11
|
SSW
11
|
SSW
11
|
SSW
11
|
SSW
13
|
SSW
11
|
SSW
13
|
SW
13
|
SW
13
|
WSW
14
|
WSW
15
|
WSW
16
|
WSW
16
|
W
16
|
W
16
|
W
16
|
W
14
|
W
13
|
W
13
|
W
13
|
W
11
|
| Wind gust (mph) |
22
|
25
|
25
|
22
|
25
|
27
|
28
|
27
|
27
|
28
|
28
|
26
|
26
|
26
|
27
|
26
|
26
|
25
|
25
|
24
|
23
|
22
|
22
|
23
|
| Visibility (description) |
M
|
M
|
M
|
M
|
M
|
M
|
M
|
P
|
M
|
M
|
M
|
P
|
M
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
| Humidity |
91%
|
90%
|
91%
|
90%
|
90%
|
91%
|
92%
|
92%
|
91%
|
89%
|
88%
|
91%
|
86%
|
84%
|
82%
|
83%
|
83%
|
83%
|
84%
|
86%
|
88%
|
90%
|
91%
|
92%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 3 | 4 | 4 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | - | - | - |
Thursday (3 September 2026)
| Time |
00:00
|
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
20%
|
| Temperature (°C) |
16°
|
16°
|
16°
|
15°
|
18°
|
19°
|
19°
|
18°
|
17°
|
| Feels like temperature (°C) |
15°
|
14°
|
14°
|
14°
|
16°
|
17°
|
17°
|
16°
|
15°
|
| Wind direction and speed (mph) |
W
11
|
W
11
|
W
10
|
W
9
|
W
11
|
W
13
|
W
14
|
W
11
|
WSW
11
|
| Wind gust (mph) |
22
|
19
|
17
|
21
|
25
|
25
|
24
|
19
|
18
|
| Visibility (description) |
G
|
G
|
G
|
M
|
G
|
G
|
VG
|
G
|
M
|
| Humidity |
91%
|
92%
|
92%
|
93%
|
81%
|
72%
|
73%
|
82%
|
92%
|
| UV | - | - | - | 1 | 3 | 5 | 2 | 1 | - |
Friday (4 September 2026)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
20%
|
30%
|
30%
|
30%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
17°
|
17°
|
17°
|
18°
|
19°
|
19°
|
18°
|
17°
|
| Feels like temperature (°C) |
16°
|
16°
|
16°
|
17°
|
18°
|
18°
|
17°
|
16°
|
| Wind direction and speed (mph) |
WSW
10
|
WSW
10
|
WSW
9
|
WSW
10
|
WSW
11
|
WSW
11
|
WSW
11
|
WSW
10
|
| Wind gust (mph) |
18
|
17
|
20
|
23
|
24
|
23
|
16
|
12
|
| Visibility (description) |
M
|
P
|
P
|
M
|
G
|
G
|
M
|
M
|
| Humidity |
95%
|
95%
|
96%
|
91%
|
85%
|
82%
|
88%
|
95%
|
| UV | - | - | 1 | 2 | 4 | 2 | 1 | - |
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Flood alerts in force for England
Flood alerts in force for England
South West England weather forecast
Headline:
Cloud and rain moving eastwards. Blustery with showers thereafter.
Today:
An unsettled start with heavy, persistent rain pushing westwards. Rain turning thundery into the afternoon with strong and squally winds likely, with the risk of coastal gales in the south. Maximum temperature 21 °C.
Tonight:
Further showers are likely across the east of the region during the evening, however it will turn somewhat drier from the west with clear spells developing. Minimum temperature 14 °C.
Sunday:
A cloudy start on Sunday with sunny spells soon giving way to showers, these will prove heavy, with thunder and hail during the afternoon and evening. Temperatures close to normal. Maximum temperature 24 °C.
Outlook for Monday to Wednesday:
Unsettled throughout with showers, these locally heavy and with thundery. Staying warm to start with but turning fresher as winds shift to a westerly and strengthen from Monday.
Updated:
UK long range weather forecast
Nearest forecasts
- St Agnes Leisure Park 0.4 miles
- Porthtowan (Beach) 2.5 miles
- Perranporth Youth Hostel 2.9 miles
- Perranporth - Village (Beach) 3.3 miles
- Gwennap Mining District 4.6 miles
- Perranporth - Penhale Sands (Beach) 4.7 miles
- Portreath (Beach) 5.4 miles
- Portreath 5.5 miles
- Redruth 5.6 miles
- Holywell Bay Fun Park 5.7 miles