– Lat/Long: 53.15° N 3.95° W
Pen yr Helgi Du
Weather Forecast, United KingdomIssued: 6 pm Tue 25 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 6 pm Tue 25 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 6 pm Tue 25 Aug Local Time
Updates in:
Update imminent hr min s
2 Pen yr Helgi Du Elevations: 2 Forecast Elevations: Days 1–4 Weather SummaryHeavy rain (total 33mm), heaviest during Thu afternoon. Very mild (max 15°C on Tue afternoon, min 12°C on Tue night). Winds decreasing (fresh winds from the SE on Tue night, light winds from the SSE by Thu afternoon). | Days 5–7 Weather SummaryModerate rain (total 20mm), heaviest on Sun night. Very mild (max 13°C on Fri afternoon, min 6°C on Sun night). Winds decreasing (strong winds from the SW on Sat morning, calm by Sun afternoon). | ||||||||||||||||
Tue 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | | |  |  |  | | | | | | | |  | |
cloudy | rain shwrs | light rain | risk tstorm | rain shwrs | light rain | heavy rain | heavy rain | rain shwrs | rain shwrs | rain shwrs | light rain | light rain | rain shwrs | rain shwrs | light rain | mod. rain | |
Cloud base (m) | 2850 | 3000 | 500 | 750 | 8600 | 3350 | 300 | 50 | 100 | 650 | 5100 | 50 | 350 | 300 | 550 | 100 | 50 |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | 0.7 | 0.6 | 3 | 1.8 | 1.7 | 10 | 10 | 4 | 0.7 | 0.9 | 3 | 1.6 | 1.7 | 0.8 | 4 | 8 |
max °C | 15 | 14 | 14 | 15 | 14 | 14 | 13 | 12 | 12 | 13 | 11 | 12 | 13 | 10 | 10 | 10 | 10 |
min °C | 15 | 12 | 13 | 15 | 14 | 13 | 12 | 12 | 12 | 13 | 10 | 12 | 12 | 8 | 9 | 10 | 6 |
chill °C | 14 | 10 | 10 | 14 | 13 | 11 | 11 | 10 | 10 | 10 | 6 | 9 | 9 | 4 | 6 | 8 | 2 |
Freezing level m | 3300 | 3150 | 3200 | 3300 | 3350 | 3100 | 3200 | 3100 | 3050 | 3150 | 3250 | 3150 | 3250 | 3000 | 2650 | 2600 | 2500 |
 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — |
 | 8:22 | — | — | 8:20 | — | — | 8:16 | — | — | 8:15 | — | — | 8:13 | — | — | 8:09 | — |
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Pen yr Helgi Du Weather (Days 0-3):
The weather forecast for Pen yr Helgi Du is: Heavy rain (total 33mm), heaviest during Thu afternoon. Very mild (max 15°C on Tue afternoon, min 12°C on Tue night). Winds decreasing (fresh winds from the SE on Tue night, light winds from the SSE by Thu afternoon).
Pen yr Helgi Du Weather (Days 3-6):
Moderate rain (total 20mm), heaviest on Sun night. Very mild (max 13°C on Fri afternoon, min 6°C on Sun night). Winds decreasing (strong winds from the SW on Sat morning, calm by Sun afternoon).
This table gives the weather forecast for Pen yr Helgi Du at the specific elevation of 833 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of Pen yr Helgi Du. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of United Kingdom.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
Caernarfon Airport |  | ||||
SHIP3334 | |||||
SHIP3378 | |||||
SHIP2220 | |||||
SHIP2221 | |||||
Valley RAF Airport |  |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.
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