Bryn Du – Weather Forecast
Category 3Aberdare, Wales, GB
This page shows a route-based weather forecast for the Bryn Du cycling climb in Aberdare, Wales, GB. Unlike a simple location forecast, conditions are calculated at every point along the climb — from the base to the summit — using the actual route profile and elevation data.
You'll see hour-by-hour temperature, wind speed and direction, precipitation probability, and cloud cover adjusted for altitude. Choose your planned departure time to align the forecast with your ride.
Bryn Du
Plan Your Ride
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Calculating weather along route...
Trip Summary
Forecast A
Trip Summary A
Forecast B
Trip Summary B
Weather Display Options
Forecast A - Route Map
Forecast B - Route Map
Compare Reversed Route
Same departure time & speed — opposite direction
→ Original Direction
← Reversed Direction
Creates a new saved route in the reversed direction
Route Map
Elevation Profile
Temperature Along Route
Precipitation & Precipitation Probability Along Route
Wind Along Route
Humidity Along Route
Pollen Along Route
UV Index Along Route
Start place details
Weather Forecast
Hourly around Sat 29 Aug 07:18
Climate Overview
| Month |
Temp Day
|
Temp Night
|
Sunny Days
|
Sun Hours
|
Rain Days
|
Precipitation
|
Humidity
|
UV Index
|
Day Length
|
|---|---|---|---|---|---|---|---|---|---|
| Jan | 6°C | 2°C | 11 | 3.9h | 13 | 175 mm | 75 % | 2 | 8h 25m |
| Feb | 7°C | 3°C | 8 | 3.9h | 19 | 155 mm | 73 % | 3 | 9h 59m |
| Mar | 11°C | 4°C | 24 | 8.6h | 12 | 33 mm | 70 % | 4 | 11h 55m |
| Apr | 15°C | 7°C | 26 | 10.1h | 12 | 110 mm | 68 % | 5 | 13h 55m |
| May | 17°C | 9°C | 26 | 11.4h | 14 | 84 mm | 65 % | 6 | 15h 40m |
| Jun | 18°C | 12°C | 23 | 10.2h | 23 | 139 mm | 67 % | 7 | 16h 35m |
| Jul | 20°C | 14°C | 28 | 11.4h | 21 | 87 mm | 66 % | 8 | 16h 6m |
| Aug | 20°C | 13°C | 25 | 10.2h | 13 | 95 mm | 68 % | 7 | 14h 33m |
| Sep | 16°C | 10°C | 21 | 7.5h | 21 | 192 mm | 70 % | 5 | 12h 37m |
| Oct | 13°C | 9°C | 19 | 5.6h | 20 | 159 mm | 72 % | 4 | 10h 37m |
| Nov | 10°C | 6°C | 11 | 3.7h | 24 | 311 mm | 76 % | 2 | 8h 50m |
| Dec | 8°C | 5°C | 11 | 3.5h | 21 | 361 mm | 77 % | 2 | 7h 53m |