Porthmadog, Wales Climate
United Kingdom
Pop. 2,981 Elev. 4 m / 13 ft
TZ: Europe/London (UTC+1) ·
Summers in Porthmadog are cool, with August highs around 65°F (18°C), while winters are cool with January lows of 37°F (3°C). Expect around 116 rainy days annually (65.8 in / 1672 mm total), with snow on 1 days and 6 in (151 mm) of annual accumulation. The city averages 59 sunny days per year and around 50 thunderstorm days. Ocean water temperatures reach 64°F (18°C) in summer.
| Temperature | 18°C (65°F) high | 3°C (37°F) low |
| Feels like | 1°C (34°F) low | |
| Rain | 116 days | 1672 mm (65.8 in) /yr |
| Snow | 1 days | 151 mm (5.9 in) /yr |
| Sky | 59 sunny | 50 stormy |
| Wind | 2.3 m/s (5.2 mph) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jun, Jul, Aug
Sky & Air by Month
Cloud cover (%)
75
Jan 77
Feb 61
Mar 55
Apr 49
May 74
Jun 71
Jul 62
Aug 72
Sep 81
Oct 77
Nov 71
Dec Humidity (%)
86
Jan 84
Feb 79
Mar 75
Apr 75
May 85
Jun 84
Jul 81
Aug 82
Sep 84
Oct 85
Nov 86
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 132 km Isle of Man Airport (IOM)
Ski resort 140 km
National park 138 km
Hospital 2 km Ysbyty Alltwen
Hiking trail 8 km Aberglaslyn, Llyn Dinas and Cwm Bychan walk
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 6°C 43°F | 3°C 37°F | 146 mm 5.7 in | 149 mm5.8 in | 3 |
| February | 7°C 45°F | 4°C 39°F | 90 mm 3.5 in | 1 mm0.0 in | 4 |
| March | 10°C 50°F | 5°C 41°F | 30 mm 1.2 in | 0 mm0.0 in | 6 |
| April | 13°C 56°F | 7°C 45°F | 84 mm 3.3 in | — | 11 |
| May | 15°C 59°F | 9°C 48°F | 72 mm 2.8 in | — | 14 |
| June | 16°C 61°F | 12°C 54°F | 164 mm 6.5 in | — | 1 |
| July | 18°C 64°F | 13°C 56°F | 79 mm 3.1 in | — | 5 |
| August | 18°C 65°F | 14°C 57°F | 85 mm 3.4 in | — | 6 |
| September | 15°C 60°F | 11°C 52°F | 238 mm 9.4 in | — | 2 |
| October | 13°C 55°F | 10°C 50°F | 159 mm 6.3 in | — | 0 |
| November | 11°C 51°F | 8°C 46°F | 287 mm 11.3 in | 1 mm0.0 in | 2 |
| December | 9°C 48°F | 6°C 43°F | 237 mm 9.3 in | — | 5 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 3 | 2 |
| February | 4 | 4 |
| March | 6 | 0 |
| April | 11 | 1 |
| May | 14 | 1 |
| June | 1 | 5 |
| July | 5 | 2 |
| August | 6 | 3 |
| September | 2 | 10 |
| October | 0 | 5 |
| November | 2 | 9 |
| December | 5 | 8 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 8°C 47°F | 5°C 41°F |
| February | 8°C 46°F | 4°C 39°F |
| March | 9°C 48°F | 5°C 41°F |
| April | 11°C 52°F | 7°C 45°F |
| May | 14°C 57°F | 11°C 52°F |
| June | 15°C 60°F | 14°C 58°F |
| July | 17°C 63°F | 18°C 64°F |
| August | 18°C 64°F | 17°C 62°F |
| September | 17°C 63°F | 14°C 58°F |
| October | 15°C 59°F | 11°C 53°F |
| November | 13°C 56°F | 9°C 49°F |
| December | 11°C 51°F | 7°C 45°F |