Monthly climate averages for Gwalchmai, United Kingdom. Based on 10-year ERA5 reanalysis data.
Cfb Oceanic
Climate OverviewGwalchmai, United Kingdom in August has mild conditions, with highs averaging 18°C (64°F) and noticeably cooler mornings. Rain falls on about 14 days this month. Sea temperature stays cool at 17.4°C (63°F).
This month falls at the end of Summer.
Temperatures remain fairly steady throughout August, with daily highs around 17°C (63°F).
August sees fairly even rainfall, totalling about 77 mm across the month.
The warmest days tend to fall around the 12th, averaging 19.3°C (67°F).
Daily averages based on historical data (2016–2025)
Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.
2 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 8°C / 4°C | 3°C / 0°C | 15days (91 mm) Wet | 3.7h Poor | 83% Humid | 0.9 Low | Poor | View Details |
| February | 8°C / 4°C | 3°C / -1°C | 13days (86 mm) Wet | 5.4h Fair | 80% Humid | 1.4 Low | Poor | View Details |
| March | 9°C / 5°C | 5°C / 0°C | 15days (80 mm) Wet | 7.5h Good | 81% Humid | 3.1 Moderate | Poor | View Details |
| April | 11°C / 6°C | 8°C / 2°C | 13days (64 mm) Wet | 9.8h Good | 77% Humid | 4.3 Moderate | Fair | View Details |
| May best | 14°C / 9°C | 12°C / 6°C | 11days (53 mm) Wet | 11.7h Excellent | 78% Humid | 5.6 High | Fair | View Details |
| June best | 17°C / 12°C | 15°C / 9°C | 13days (71 mm) Wet | 11.5h Excellent | 79% Humid | 5.9 High | Good | View Details |
| July best | 18°C / 13°C | 17°C / 11°C | 13days (69 mm) Wet | 11.1h Excellent | 80% Humid | 5.4 High | Good | View Details |
| August best | 18°C / 14°C | 17°C / 12°C | 14days (77 mm) Wet | 10h Excellent | 81% Humid | 5 Moderate | Good | View Details |
| September best | 16°C / 12°C | 14°C / 10°C | 15days (106 mm) Wet | 8h Good | 81% Humid | 3.4 Moderate | Fair | View Details |
| October | 13°C / 10°C | 10°C / 6°C | 16days (112 mm) Wet | 5.9h Fair | 81% Humid | 2.2 Moderate | Poor | View Details |
| November | 10°C / 7°C | 7°C / 3°C | 17days (108 mm) Wet | 4.1h Fair | 82% Humid | 1.1 Low | Poor | View Details |
| December | 9°C / 6°C | 5°C / 1°C | 17days (113 mm) Wet | 3.1h Poor | 84% Humid | 0.7 Low | Poor | View Details |
Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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