Nant Gwynant CRM HC – Weather Forecast
Category 3Caernarfon, Gwynedd, GB
This page shows a route-based weather forecast for the Nant Gwynant CRM HC cycling climb in Caernarfon, Gwynedd, 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.
Nant Gwynant CRM HC
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 Sun 30 Aug 11:03
Climate Overview
| Month |
Temp Day
|
Temp Night
|
Sunny Days
|
Sun Hours
|
Rain Days
|
Precipitation
|
Humidity
|
UV Index
|
Day Length
|
|---|---|---|---|---|---|---|---|---|---|
| Jan | 6°C | 2°C | 8 | 3.4h | 21 | 194 mm | 75 % | 2 | 8h 13m |
| Feb | 7°C | 3°C | 14 | 5.3h | 18 | 188 mm | 73 % | 3 | 9h 53m |
| Mar | 11°C | 4°C | 25 | 8.8h | 12 | 53 mm | 70 % | 4 | 11h 54m |
| Apr | 15°C | 7°C | 24 | 9.5h | 16 | 103 mm | 68 % | 5 | 14h 1m |
| May | 17°C | 8°C | 28 | 12.0h | 13 | 126 mm | 65 % | 6 | 15h 52m |
| Jun | 17°C | 12°C | 23 | 9.7h | 25 | 267 mm | 67 % | 7 | 16h 51m |
| Jul | 19°C | 13°C | 24 | 10.6h | 23 | 118 mm | 66 % | 8 | 16h 20m |
| Aug | 19°C | 13°C | 29 | 11.0h | 16 | 131 mm | 68 % | 7 | 14h 40m |
| Sep | 16°C | 10°C | 21 | 7.5h | 26 | 301 mm | 70 % | 5 | 12h 38m |
| Oct | 13°C | 8°C | 15 | 5.3h | 21 | 223 mm | 72 % | 4 | 10h 33m |
| Nov | 10°C | 6°C | 11 | 4.3h | 25 | 352 mm | 76 % | 2 | 8h 40m |
| Dec | 8°C | 5°C | 10 | 3.9h | 20 | 402 mm | 77 % | 2 | 7h 39m |