Pontsticill Reservoir (Powys) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius; -
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 14° Celsius;
Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius; -
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 11 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: 12° Celsius;
Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius;
-
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius; -
Maximum daytime temperature: 17° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
Heavy rain changing to sunny intervals by late morning.
Sunrise:
Sunset:
M UV
L Pollution
No pollen data.
7 day forecast for Pontsticill Reservoir
Today (17 September 2026)
| Time |
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 |
≥95%
|
60%
|
<5%
|
<5%
|
10%
|
20%
|
20%
|
40%
|
20%
|
30%
|
50%
|
60%
|
70%
|
50%
|
50%
|
50%
|
20%
|
<5%
|
| Temperature |
13°
|
14°
|
13°
|
13°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
14°
|
14°
|
14°
|
12°
|
12°
|
11°
|
11°
|
11°
|
| Feels like temperature (°C) |
12°
|
12°
|
11°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
10°
|
10°
|
10°
|
10°
|
| Wind direction and speed |
WSW
11
|
W
9
|
W
9
|
W
10
|
W
11
|
W
12
|
W
11
|
W
11
|
W
11
|
W
11
|
W
11
|
W
10
|
W
9
|
W
9
|
W
8
|
W
8
|
W
8
|
W
8
|
| Wind gust (mph) |
23
|
22
|
21
|
24
|
26
|
27
|
26
|
27
|
27
|
27
|
26
|
25
|
23
|
21
|
19
|
19
|
19
|
17
|
| Visibility |
P
|
P
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
G
|
G
|
G
|
| Humidity |
99%
|
97%
|
93%
|
88%
|
83%
|
75%
|
71%
|
69%
|
68%
|
68%
|
68%
|
72%
|
78%
|
83%
|
86%
|
88%
|
88%
|
88%
|
| UV | 1 | 1 | 1 | 2 | 3 | 4 | 4 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Friday (18 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 |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
20%
|
30%
|
50%
|
70%
|
90%
|
90%
|
90%
|
90%
|
90%
|
≥95%
|
90%
|
80%
|
| Temperature (°C) |
11°
|
10°
|
10°
|
10°
|
10°
|
10°
|
10°
|
10°
|
11°
|
12°
|
13°
|
14°
|
15°
|
15°
|
15°
|
15°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
15°
|
| Feels like temperature (°C) |
9°
|
9°
|
9°
|
9°
|
9°
|
8°
|
9°
|
9°
|
9°
|
10°
|
11°
|
12°
|
13°
|
12°
|
13°
|
12°
|
12°
|
12°
|
11°
|
12°
|
12°
|
13°
|
13°
|
13°
|
| Wind direction and speed (mph) |
W
7
|
W
7
|
W
7
|
WSW
7
|
W
7
|
W
8
|
W
7
|
W
7
|
W
8
|
WSW
9
|
WSW
11
|
WSW
11
|
WSW
13
|
WSW
14
|
SW
14
|
WSW
14
|
SW
14
|
SW
14
|
SW
14
|
SW
14
|
WSW
14
|
WSW
13
|
WSW
14
|
WSW
14
|
| Wind gust (mph) |
17
|
16
|
16
|
17
|
17
|
16
|
15
|
15
|
16
|
19
|
23
|
28
|
30
|
32
|
32
|
31
|
32
|
30
|
29
|
29
|
29
|
29
|
30
|
30
|
| Visibility (description) |
G
|
VG
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
M
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
| Humidity |
88%
|
88%
|
90%
|
91%
|
91%
|
91%
|
91%
|
91%
|
91%
|
86%
|
83%
|
77%
|
77%
|
76%
|
78%
|
79%
|
90%
|
91%
|
97%
|
98%
|
99%
|
99%
|
99%
|
98%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | - | - | - | - |
Saturday (19 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 |
80%
|
70%
|
70%
|
70%
|
70%
|
80%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
80%
|
70%
|
70%
|
60%
|
50%
|
40%
|
40%
|
40%
|
30%
|
20%
|
20%
|
| Temperature (°C) |
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
16°
|
16°
|
16°
|
17°
|
17°
|
17°
|
17°
|
16°
|
16°
|
16°
|
15°
|
15°
|
15°
|
14°
|
| Feels like temperature (°C) |
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
13°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
14°
|
14°
|
13°
|
13°
|
13°
|
| Wind direction and speed (mph) |
WSW
14
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
14
|
SW
14
|
WSW
13
|
WSW
13
|
WSW
13
|
WSW
13
|
WSW
14
|
WSW
14
|
WSW
14
|
WSW
13
|
WSW
13
|
WSW
13
|
WSW
11
|
WSW
11
|
WSW
11
|
WSW
11
|
WSW
10
|
WSW
10
|
| Wind gust (mph) |
29
|
29
|
29
|
29
|
28
|
28
|
28
|
28
|
28
|
29
|
29
|
30
|
30
|
30
|
30
|
28
|
27
|
25
|
24
|
22
|
21
|
20
|
20
|
19
|
| Visibility (description) |
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
M
|
M
|
M
|
| Humidity |
98%
|
97%
|
96%
|
96%
|
97%
|
97%
|
98%
|
99%
|
99%
|
99%
|
99%
|
99%
|
98%
|
98%
|
98%
|
98%
|
98%
|
98%
|
96%
|
96%
|
96%
|
95%
|
95%
|
95%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Sunday (20 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%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
20%
|
20%
|
20%
|
20%
|
20%
|
20%
|
20%
|
20%
|
20%
|
10%
|
10%
|
20%
|
10%
|
10%
|
20%
|
| Temperature (°C) |
14°
|
14°
|
14°
|
13°
|
13°
|
13°
|
12°
|
12°
|
13°
|
14°
|
15°
|
16°
|
17°
|
17°
|
17°
|
18°
|
17°
|
17°
|
16°
|
16°
|
15°
|
16°
|
16°
|
16°
|
| Feels like temperature (°C) |
13°
|
13°
|
12°
|
12°
|
12°
|
12°
|
11°
|
11°
|
13°
|
13°
|
14°
|
15°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
16°
|
15°
|
15°
|
15°
|
15°
|
| Wind direction and speed (mph) |
WSW
9
|
WSW
8
|
WSW
8
|
WSW
7
|
WSW
6
|
WSW
6
|
WSW
5
|
WSW
5
|
WSW
5
|
WSW
6
|
W
7
|
W
7
|
WSW
8
|
WSW
8
|
WSW
9
|
WSW
9
|
WSW
8
|
WSW
8
|
WSW
8
|
WSW
7
|
WSW
7
|
WSW
7
|
WSW
7
|
WSW
7
|
| Wind gust (mph) |
17
|
16
|
16
|
13
|
13
|
12
|
11
|
11
|
13
|
15
|
17
|
19
|
19
|
19
|
20
|
20
|
19
|
18
|
16
|
16
|
16
|
16
|
16
|
17
|
| Visibility (description) |
P
|
M
|
M
|
M
|
M
|
M
|
M
|
P
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
P
|
P
|
P
|
P
|
| Humidity |
95%
|
95%
|
96%
|
95%
|
95%
|
96%
|
96%
|
96%
|
94%
|
91%
|
85%
|
82%
|
80%
|
78%
|
78%
|
78%
|
81%
|
85%
|
91%
|
93%
|
97%
|
97%
|
99%
|
98%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Monday (21 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%
|
20%
|
20%
|
30%
|
30%
|
30%
|
30%
|
20%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
| Temperature (°C) |
16°
|
16°
|
16°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
16°
|
16°
|
17°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
18°
|
17°
|
16°
|
15°
|
15°
|
14°
|
| Feels like temperature (°C) |
15°
|
16°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
15°
|
16°
|
16°
|
17°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
18°
|
17°
|
16°
|
15°
|
15°
|
14°
|
| Wind direction and speed (mph) |
WSW
7
|
WSW
7
|
WSW
7
|
WSW
7
|
WSW
7
|
WSW
7
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
6
|
WSW
7
|
WSW
7
|
WSW
7
|
WSW
7
|
WSW
6
|
WSW
6
|
WSW
5
|
WSW
4
|
WSW
3
|
WSW
3
|
WSW
3
|
WSW
3
|
| Wind gust (mph) |
17
|
16
|
17
|
16
|
18
|
17
|
16
|
15
|
16
|
15
|
15
|
16
|
17
|
17
|
17
|
16
|
16
|
15
|
13
|
10
|
9
|
9
|
8
|
8
|
| Visibility (description) |
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
P
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
M
|
P
|
P
|
P
|
P
|
| Humidity |
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
97%
|
95%
|
92%
|
89%
|
86%
|
85%
|
85%
|
86%
|
89%
|
93%
|
96%
|
97%
|
98%
|
98%
|
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Tuesday (22 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 |
<5%
|
10%
|
10%
|
20%
|
30%
|
20%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
13°
|
13°
|
13°
|
13°
|
15°
|
18°
|
18°
|
15°
|
12°
|
| Feels like temperature (°C) |
14°
|
13°
|
13°
|
13°
|
15°
|
18°
|
18°
|
15°
|
12°
|
| Wind direction and speed (mph) |
SW
2
|
SW
2
|
SW
2
|
SSW
2
|
SSW
5
|
SW
6
|
SW
6
|
WSW
4
|
WSW
3
|
| Wind gust (mph) |
8
|
7
|
8
|
9
|
17
|
17
|
16
|
11
|
9
|
| Visibility (description) |
P
|
P
|
VP
|
VP
|
P
|
G
|
VG
|
G
|
M
|
| Humidity |
99%
|
99%
|
99%
|
99%
|
94%
|
86%
|
80%
|
87%
|
94%
|
| UV | - | - | - | 1 | 2 | 3 | 1 | 1 | - |
Wednesday (23 September 2026)
| Time |
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%
|
<5%
|
| Temperature (°C) |
11°
|
10°
|
9°
|
14°
|
16°
|
17°
|
13°
|
10°
|
| Feels like temperature (°C) |
10°
|
10°
|
9°
|
14°
|
15°
|
16°
|
12°
|
9°
|
| Wind direction and speed (mph) |
WNW
3
|
WNW
2
|
NW
2
|
NNW
4
|
N
5
|
NNW
5
|
NNW
4
|
SSW
2
|
| Wind gust (mph) |
9
|
9
|
9
|
16
|
17
|
16
|
10
|
8
|
| Visibility (description) |
P
|
P
|
P
|
M
|
G
|
VG
|
VG
|
M
|
| Humidity |
95%
|
95%
|
94%
|
83%
|
69%
|
64%
|
79%
|
89%
|
| UV | - | - | 1 | 2 | 3 | 1 | 1 | - |
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Wales weather forecast
Headline:
Early rain clearing the sunny spells and showers.
Today:
Early cloud and rain will clear to the southeast to leave a mostly dry day with plenty of sunny spells then following. The odd shower is possible towards north and west, but most will remain dry. Rather breezy for all. Maximum temperature 17 °C.
Tonight:
Early evening showers easing to leave a mostly dry night with clear spells. Winds also easing a little by morning. Minimum temperature 10 °C.
Friday:
Dry at first, but increasingly cloudy as rain moves in from the west during the morning. Turning heavy for a time, especially over western hills. Rather windy. Maximum temperature 18 °C.
Outlook for Saturday to Monday:
Mostly cloudy on Saturday and Sunday with patchy rain and stronger winds. Brighter to the east of high ground. Drier, brighter and a little warmer on Monday with lighter winds.
Updated: